Initial implementation of Asset, Relation and Alarm services

application/src/main/java/org/thingsboard/server/actors/ActorSystemContext.java

@@ -37,6 +37,7 @@ import org.thingsboard.server.common.data.plugin.ComponentLifecycleEvent;
 import org.thingsboard.server.common.msg.cluster.ServerAddress;
 import org.thingsboard.server.common.transport.auth.DeviceAuthService;
 import org.thingsboard.server.controller.plugin.PluginWebSocketMsgEndpoint;
+import org.thingsboard.server.dao.asset.AssetService;
 import org.thingsboard.server.dao.attributes.AttributesService;
 import org.thingsboard.server.dao.customer.CustomerService;
 import org.thingsboard.server.dao.device.DeviceService;
@@ -80,6 +81,9 @@ public class ActorSystemContext {
     @Autowired
     @Getter private DeviceService deviceService;
 
+    @Autowired
+    @Getter private AssetService assetService;
+
     @Autowired
     @Getter private TenantService tenantService;
 

application/src/main/java/org/thingsboard/server/actors/plugin/PluginProcessingContext.java

@@ -17,7 +17,6 @@ package org.thingsboard.server.actors.plugin;
 
 import java.io.IOException;
 import java.util.*;
-import java.util.concurrent.ExecutionException;
 import java.util.concurrent.Executor;
 import java.util.concurrent.Executors;
 import java.util.stream.Collectors;
@@ -30,15 +29,19 @@ import com.google.common.util.concurrent.FutureCallback;
 import com.google.common.util.concurrent.Futures;
 import com.google.common.util.concurrent.ListenableFuture;
 import lombok.extern.slf4j.Slf4j;
-import org.thingsboard.server.common.data.DataConstants;
+import org.thingsboard.server.common.data.Customer;
 import org.thingsboard.server.common.data.Device;
+import org.thingsboard.server.common.data.EntityType;
+import org.thingsboard.server.common.data.Tenant;
+import org.thingsboard.server.common.data.asset.Asset;
 import org.thingsboard.server.common.data.id.*;
 import org.thingsboard.server.common.data.kv.AttributeKey;
 import org.thingsboard.server.common.data.kv.AttributeKvEntry;
 import org.thingsboard.server.common.data.kv.TsKvEntry;
 import org.thingsboard.server.common.data.kv.TsKvQuery;
-import org.thingsboard.server.common.data.page.TextPageData;
 import org.thingsboard.server.common.data.page.TextPageLink;
+import org.thingsboard.server.common.data.plugin.PluginMetaData;
+import org.thingsboard.server.common.data.rule.RuleMetaData;
 import org.thingsboard.server.common.msg.cluster.ServerAddress;
 import org.thingsboard.server.extensions.api.device.DeviceAttributesEventNotificationMsg;
 import org.thingsboard.server.extensions.api.plugins.PluginApiCallSecurityContext;
@@ -53,7 +56,6 @@ import org.thingsboard.server.extensions.api.plugins.ws.PluginWebsocketSessionRe
 import org.thingsboard.server.extensions.api.plugins.ws.msg.PluginWebsocketMsg;
 
 import akka.actor.ActorRef;
-import org.w3c.dom.Attr;
 
 import javax.annotation.Nullable;
 
@@ -91,103 +93,107 @@ public final class PluginProcessingContext implements PluginContext {
     }
 
     @Override
-    public void saveAttributes(final TenantId tenantId, final DeviceId deviceId, final String scope, final List<AttributeKvEntry> attributes, final PluginCallback<Void> callback) {
-        validate(deviceId, new ValidationCallback(callback, ctx -> {
-            ListenableFuture<List<ResultSet>> rsListFuture = pluginCtx.attributesService.save(deviceId, scope, attributes);
+    public void saveAttributes(final TenantId tenantId, final EntityId entityId, final String scope, final List<AttributeKvEntry> attributes, final PluginCallback<Void> callback) {
+        validate(entityId, new ValidationCallback(callback, ctx -> {
+            ListenableFuture<List<ResultSet>> rsListFuture = pluginCtx.attributesService.save(entityId, scope, attributes);
             Futures.addCallback(rsListFuture, getListCallback(callback, v -> {
-                onDeviceAttributesChanged(tenantId, deviceId, scope, attributes);
+                if (entityId.getEntityType() == EntityType.DEVICE) {
+                    onDeviceAttributesChanged(tenantId, new DeviceId(entityId.getId()), scope, attributes);
+                }
                 return null;
             }), executor);
         }));
     }
 
     @Override
-    public void removeAttributes(final TenantId tenantId, final DeviceId deviceId, final String scope, final List<String> keys, final PluginCallback<Void> callback) {
-        validate(deviceId, new ValidationCallback(callback, ctx -> {
-            ListenableFuture<List<ResultSet>> future = pluginCtx.attributesService.removeAll(deviceId, scope, keys);
+    public void removeAttributes(final TenantId tenantId, final EntityId entityId, final String scope, final List<String> keys, final PluginCallback<Void> callback) {
+        validate(entityId, new ValidationCallback(callback, ctx -> {
+            ListenableFuture<List<ResultSet>> future = pluginCtx.attributesService.removeAll(entityId, scope, keys);
             Futures.addCallback(future, getCallback(callback, v -> null), executor);
-            onDeviceAttributesDeleted(tenantId, deviceId, keys.stream().map(key -> new AttributeKey(scope, key)).collect(Collectors.toSet()));
+            if (entityId.getEntityType() == EntityType.DEVICE) {
+                onDeviceAttributesDeleted(tenantId, new DeviceId(entityId.getId()), keys.stream().map(key -> new AttributeKey(scope, key)).collect(Collectors.toSet()));
+            }
         }));
     }
 
     @Override
-    public void loadAttribute(DeviceId deviceId, String attributeType, String attributeKey, final PluginCallback<Optional<AttributeKvEntry>> callback) {
-        validate(deviceId, new ValidationCallback(callback, ctx -> {
-            ListenableFuture<Optional<AttributeKvEntry>> future = pluginCtx.attributesService.find(deviceId, attributeType, attributeKey);
+    public void loadAttribute(EntityId entityId, String attributeType, String attributeKey, final PluginCallback<Optional<AttributeKvEntry>> callback) {
+        validate(entityId, new ValidationCallback(callback, ctx -> {
+            ListenableFuture<Optional<AttributeKvEntry>> future = pluginCtx.attributesService.find(entityId, attributeType, attributeKey);
             Futures.addCallback(future, getCallback(callback, v -> v), executor);
         }));
     }
 
     @Override
-    public void loadAttributes(DeviceId deviceId, String attributeType, Collection<String> attributeKeys, final PluginCallback<List<AttributeKvEntry>> callback) {
-        validate(deviceId, new ValidationCallback(callback, ctx -> {
-            ListenableFuture<List<AttributeKvEntry>> future = pluginCtx.attributesService.find(deviceId, attributeType, attributeKeys);
+    public void loadAttributes(EntityId entityId, String attributeType, Collection<String> attributeKeys, final PluginCallback<List<AttributeKvEntry>> callback) {
+        validate(entityId, new ValidationCallback(callback, ctx -> {
+            ListenableFuture<List<AttributeKvEntry>> future = pluginCtx.attributesService.find(entityId, attributeType, attributeKeys);
             Futures.addCallback(future, getCallback(callback, v -> v), executor);
         }));
     }
 
     @Override
-    public void loadAttributes(DeviceId deviceId, String attributeType, PluginCallback<List<AttributeKvEntry>> callback) {
-        validate(deviceId, new ValidationCallback(callback, ctx -> {
-            ListenableFuture<List<AttributeKvEntry>> future = pluginCtx.attributesService.findAll(deviceId, attributeType);
+    public void loadAttributes(EntityId entityId, String attributeType, PluginCallback<List<AttributeKvEntry>> callback) {
+        validate(entityId, new ValidationCallback(callback, ctx -> {
+            ListenableFuture<List<AttributeKvEntry>> future = pluginCtx.attributesService.findAll(entityId, attributeType);
             Futures.addCallback(future, getCallback(callback, v -> v), executor);
         }));
     }
 
     @Override
-    public void loadAttributes(final DeviceId deviceId, final Collection<String> attributeTypes, final PluginCallback<List<AttributeKvEntry>> callback) {
-        validate(deviceId, new ValidationCallback(callback, ctx -> {
+    public void loadAttributes(final EntityId entityId, final Collection<String> attributeTypes, final PluginCallback<List<AttributeKvEntry>> callback) {
+        validate(entityId, new ValidationCallback(callback, ctx -> {
             List<ListenableFuture<List<AttributeKvEntry>>> futures = new ArrayList<>();
-            attributeTypes.forEach(attributeType -> futures.add(pluginCtx.attributesService.findAll(deviceId, attributeType)));
+            attributeTypes.forEach(attributeType -> futures.add(pluginCtx.attributesService.findAll(entityId, attributeType)));
             convertFuturesAndAddCallback(callback, futures);
         }));
     }
 
     @Override
-    public void loadAttributes(final DeviceId deviceId, final Collection<String> attributeTypes, final Collection<String> attributeKeys, final PluginCallback<List<AttributeKvEntry>> callback) {
-        validate(deviceId, new ValidationCallback(callback, ctx -> {
+    public void loadAttributes(final EntityId entityId, final Collection<String> attributeTypes, final Collection<String> attributeKeys, final PluginCallback<List<AttributeKvEntry>> callback) {
+        validate(entityId, new ValidationCallback(callback, ctx -> {
             List<ListenableFuture<List<AttributeKvEntry>>> futures = new ArrayList<>();
-            attributeTypes.forEach(attributeType -> futures.add(pluginCtx.attributesService.find(deviceId, attributeType, attributeKeys)));
+            attributeTypes.forEach(attributeType -> futures.add(pluginCtx.attributesService.find(entityId, attributeType, attributeKeys)));
             convertFuturesAndAddCallback(callback, futures);
         }));
     }
 
     @Override
-    public void saveTsData(final DeviceId deviceId, final TsKvEntry entry, final PluginCallback<Void> callback) {
-        validate(deviceId, new ValidationCallback(callback, ctx -> {
-            ListenableFuture<List<ResultSet>> rsListFuture = pluginCtx.tsService.save(DataConstants.DEVICE, deviceId, entry);
+    public void saveTsData(final EntityId entityId, final TsKvEntry entry, final PluginCallback<Void> callback) {
+        validate(entityId, new ValidationCallback(callback, ctx -> {
+            ListenableFuture<List<ResultSet>> rsListFuture = pluginCtx.tsService.save(entityId, entry);
             Futures.addCallback(rsListFuture, getListCallback(callback, v -> null), executor);
         }));
     }
 
     @Override
-    public void saveTsData(final DeviceId deviceId, final List<TsKvEntry> entries, final PluginCallback<Void> callback) {
-        validate(deviceId, new ValidationCallback(callback, ctx -> {
-            ListenableFuture<List<ResultSet>> rsListFuture = pluginCtx.tsService.save(DataConstants.DEVICE, deviceId, entries);
+    public void saveTsData(final EntityId entityId, final List<TsKvEntry> entries, final PluginCallback<Void> callback) {
+        validate(entityId, new ValidationCallback(callback, ctx -> {
+            ListenableFuture<List<ResultSet>> rsListFuture = pluginCtx.tsService.save(entityId, entries);
             Futures.addCallback(rsListFuture, getListCallback(callback, v -> null), executor);
         }));
     }
 
     @Override
-    public void loadTimeseries(final DeviceId deviceId, final List<TsKvQuery> queries, final PluginCallback<List<TsKvEntry>> callback) {
-        validate(deviceId, new ValidationCallback(callback, ctx -> {
-            ListenableFuture<List<TsKvEntry>> future = pluginCtx.tsService.findAll(DataConstants.DEVICE, deviceId, queries);
+    public void loadTimeseries(final EntityId entityId, final List<TsKvQuery> queries, final PluginCallback<List<TsKvEntry>> callback) {
+        validate(entityId, new ValidationCallback(callback, ctx -> {
+            ListenableFuture<List<TsKvEntry>> future = pluginCtx.tsService.findAll(entityId, queries);
             Futures.addCallback(future, getCallback(callback, v -> v), executor);
         }));
     }
 
     @Override
-    public void loadLatestTimeseries(final DeviceId deviceId, final PluginCallback<List<TsKvEntry>> callback) {
-        validate(deviceId, new ValidationCallback(callback, ctx -> {
-            ResultSetFuture future = pluginCtx.tsService.findAllLatest(DataConstants.DEVICE, deviceId);
+    public void loadLatestTimeseries(final EntityId entityId, final PluginCallback<List<TsKvEntry>> callback) {
+        validate(entityId, new ValidationCallback(callback, ctx -> {
+            ResultSetFuture future = pluginCtx.tsService.findAllLatest(entityId);
             Futures.addCallback(future, getCallback(callback, pluginCtx.tsService::convertResultSetToTsKvEntryList), executor);
         }));
     }
 
     @Override
-    public void loadLatestTimeseries(final DeviceId deviceId, final Collection<String> keys, final PluginCallback<List<TsKvEntry>> callback) {
-        validate(deviceId, new ValidationCallback(callback, ctx -> {
-            ListenableFuture<List<ResultSet>> rsListFuture = pluginCtx.tsService.findLatest(DataConstants.DEVICE, deviceId, keys);
+    public void loadLatestTimeseries(final EntityId entityId, final Collection<String> keys, final PluginCallback<List<TsKvEntry>> callback) {
+        validate(entityId, new ValidationCallback(callback, ctx -> {
+            ListenableFuture<List<ResultSet>> rsListFuture = pluginCtx.tsService.findLatest(entityId, keys);
             Futures.addCallback(rsListFuture, getListCallback(callback, rsList ->
             {
                 List<TsKvEntry> result = new ArrayList<>();
@@ -270,24 +276,101 @@ public final class PluginProcessingContext implements PluginContext {
         validate(deviceId, new ValidationCallback(callback, ctx -> callback.onSuccess(ctx, null)));
     }
 
-    private void validate(DeviceId deviceId, ValidationCallback callback) {
+    private void validate(EntityId entityId, ValidationCallback callback) {
         if (securityCtx.isPresent()) {
             final PluginApiCallSecurityContext ctx = securityCtx.get();
-            if (ctx.isTenantAdmin() || ctx.isCustomerUser()) {
-                ListenableFuture<Device> deviceFuture = pluginCtx.deviceService.findDeviceByIdAsync(deviceId);
-                Futures.addCallback(deviceFuture, getCallback(callback, device -> {
-                    if (device == null) {
-                        return Boolean.FALSE;
-                    } else {
-                        if (!device.getTenantId().equals(ctx.getTenantId())) {
-                            return Boolean.FALSE;
-                        } else if (ctx.isCustomerUser() && !device.getCustomerId().equals(ctx.getCustomerId())) {
-                            return Boolean.FALSE;
+            if (ctx.isTenantAdmin() || ctx.isCustomerUser() || ctx.isSystemAdmin()) {
+                switch (entityId.getEntityType()) {
+                    case DEVICE:
+                        if (ctx.isSystemAdmin()) {
+                            callback.onSuccess(this, Boolean.FALSE);
                         } else {
-                            return Boolean.TRUE;
+                            ListenableFuture<Device> deviceFuture = pluginCtx.deviceService.findDeviceByIdAsync(new DeviceId(entityId.getId()));
+                            Futures.addCallback(deviceFuture, getCallback(callback, device -> {
+                                if (device == null) {
+                                    return Boolean.FALSE;
+                                } else {
+                                    if (!device.getTenantId().equals(ctx.getTenantId())) {
+                                        return Boolean.FALSE;
+                                    } else if (ctx.isCustomerUser() && !device.getCustomerId().equals(ctx.getCustomerId())) {
+                                        return Boolean.FALSE;
+                                    } else {
+                                        return Boolean.TRUE;
+                                    }
+                                }
+                            }));
                         }
-                    }
-                }));
+                        return;
+                    case ASSET:
+                        if (ctx.isSystemAdmin()) {
+                            callback.onSuccess(this, Boolean.FALSE);
+                        } else {
+                            ListenableFuture<Asset> assetFuture = pluginCtx.assetService.findAssetByIdAsync(new AssetId(entityId.getId()));
+                            Futures.addCallback(assetFuture, getCallback(callback, asset -> {
+                                if (asset == null) {
+                                    return Boolean.FALSE;
+                                } else {
+                                    if (!asset.getTenantId().equals(ctx.getTenantId())) {
+                                        return Boolean.FALSE;
+                                    } else if (ctx.isCustomerUser() && !asset.getCustomerId().equals(ctx.getCustomerId())) {
+                                        return Boolean.FALSE;
+                                    } else {
+                                        return Boolean.TRUE;
+                                    }
+                                }
+                            }));
+                        }
+                        return;
+                    case RULE:
+                        if (ctx.isCustomerUser()) {
+                            callback.onSuccess(this, Boolean.FALSE);
+                        } else {
+                            ListenableFuture<RuleMetaData> ruleFuture = pluginCtx.ruleService.findRuleByIdAsync(new RuleId(entityId.getId()));
+                            Futures.addCallback(ruleFuture, getCallback(callback, rule -> rule != null && rule.getTenantId().equals(ctx.getTenantId())));
+                        }
+                        return;
+                    case PLUGIN:
+                        if (ctx.isCustomerUser()) {
+                            callback.onSuccess(this, Boolean.FALSE);
+                        } else {
+                            ListenableFuture<PluginMetaData> pluginFuture = pluginCtx.pluginService.findPluginByIdAsync(new PluginId(entityId.getId()));
+                            Futures.addCallback(pluginFuture, getCallback(callback, plugin -> plugin != null && plugin.getTenantId().equals(ctx.getTenantId())));
+                        }
+                        return;
+                    case CUSTOMER:
+                        if (ctx.isSystemAdmin()) {
+                            callback.onSuccess(this, Boolean.FALSE);
+                        } else {
+                            ListenableFuture<Customer> customerFuture = pluginCtx.customerService.findCustomerByIdAsync(new CustomerId(entityId.getId()));
+                            Futures.addCallback(customerFuture, getCallback(callback, customer -> {
+                                if (customer == null) {
+                                    return Boolean.FALSE;
+                                } else {
+                                    if (!customer.getTenantId().equals(ctx.getTenantId())) {
+                                        return Boolean.FALSE;
+                                    } else if (ctx.isCustomerUser() && !customer.getId().equals(ctx.getCustomerId())) {
+                                        return Boolean.FALSE;
+                                    } else {
+                                        return Boolean.TRUE;
+                                    }
+                                }
+                            }));
+                        }
+                        return;
+                    case TENANT:
+                        if (ctx.isCustomerUser()) {
+                            callback.onSuccess(this, Boolean.FALSE);
+                        } else if (ctx.isSystemAdmin()) {
+                            callback.onSuccess(this, Boolean.TRUE);
+                        } else {
+                            ListenableFuture<Tenant> tenantFuture = pluginCtx.tenantService.findTenantByIdAsync(new TenantId(entityId.getId()));
+                            Futures.addCallback(tenantFuture, getCallback(callback, tenant -> tenant != null && tenant.getId().equals(ctx.getTenantId())));
+                        }
+                        return;
+                    default:
+                        //TODO: add support of other entities
+                        throw new IllegalStateException("Not Implemented!");
+                }
             } else {
                 callback.onSuccess(this, Boolean.FALSE);
             }
@@ -297,8 +380,8 @@ public final class PluginProcessingContext implements PluginContext {
     }
 
     @Override
-    public Optional<ServerAddress> resolve(DeviceId deviceId) {
-        return pluginCtx.routingService.resolve(deviceId);
+    public Optional<ServerAddress> resolve(EntityId entityId) {
+        return pluginCtx.routingService.resolveById(entityId);
     }
 
     @Override

application/src/main/java/org/thingsboard/server/actors/plugin/SharedPluginProcessingContext.java

@@ -25,8 +25,13 @@ import org.thingsboard.server.common.data.id.TenantId;
 import org.thingsboard.server.common.msg.cluster.ServerAddress;
 import org.thingsboard.server.controller.plugin.PluginWebSocketMsgEndpoint;
 import org.thingsboard.server.common.data.id.PluginId;
+import org.thingsboard.server.dao.asset.AssetService;
 import org.thingsboard.server.dao.attributes.AttributesService;
+import org.thingsboard.server.dao.customer.CustomerService;
 import org.thingsboard.server.dao.device.DeviceService;
+import org.thingsboard.server.dao.plugin.PluginService;
+import org.thingsboard.server.dao.rule.RuleService;
+import org.thingsboard.server.dao.tenant.TenantService;
 import org.thingsboard.server.dao.timeseries.TimeseriesService;
 import org.thingsboard.server.extensions.api.device.DeviceAttributesEventNotificationMsg;
 import org.thingsboard.server.extensions.api.plugins.msg.TimeoutMsg;
@@ -46,7 +51,12 @@ public final class SharedPluginProcessingContext {
     final ActorRef currentActor;
     final ActorSystemContext systemContext;
     final PluginWebSocketMsgEndpoint msgEndpoint;
+    final AssetService assetService;
     final DeviceService deviceService;
+    final RuleService ruleService;
+    final PluginService pluginService;
+    final CustomerService customerService;
+    final TenantService tenantService;
     final TimeseriesService tsService;
     final AttributesService attributesService;
     final ClusterRpcService rpcService;
@@ -65,9 +75,14 @@ public final class SharedPluginProcessingContext {
         this.msgEndpoint = sysContext.getWsMsgEndpoint();
         this.tsService = sysContext.getTsService();
         this.attributesService = sysContext.getAttributesService();
+        this.assetService = sysContext.getAssetService();
         this.deviceService = sysContext.getDeviceService();
         this.rpcService = sysContext.getRpcService();
         this.routingService = sysContext.getRoutingService();
+        this.ruleService = sysContext.getRuleService();
+        this.pluginService = sysContext.getPluginService();
+        this.customerService = sysContext.getCustomerService();
+        this.tenantService = sysContext.getTenantService();
     }
 
     public PluginId getPluginId() {
@@ -89,7 +104,7 @@ public final class SharedPluginProcessingContext {
     }
 
     private <T> void forward(DeviceId deviceId, T msg, BiConsumer<ServerAddress, T> rpcFunction) {
-        Optional<ServerAddress> instance = routingService.resolve(deviceId);
+        Optional<ServerAddress> instance = routingService.resolveById(deviceId);
         if (instance.isPresent()) {
             log.trace("[{}] Forwarding msg {} to remote device actor!", pluginId, msg);
             rpcFunction.accept(instance.get(), msg);

application/src/main/java/org/thingsboard/server/actors/plugin/ValidationCallback.java

@@ -38,7 +38,7 @@ public class ValidationCallback implements PluginCallback<Boolean> {
         if (value) {
             action.accept(ctx);
         } else {
-            onFailure(ctx, new UnauthorizedException());
+            onFailure(ctx, new UnauthorizedException("Permission denied."));
         }
     }
 

application/src/main/java/org/thingsboard/server/actors/service/DefaultActorService.java

@@ -230,7 +230,7 @@ public class DefaultActorService implements ActorService {
     @Override
     public void onCredentialsUpdate(TenantId tenantId, DeviceId deviceId) {
         DeviceCredentialsUpdateNotificationMsg msg = new DeviceCredentialsUpdateNotificationMsg(tenantId, deviceId);
-        Optional<ServerAddress> address = actorContext.getRoutingService().resolve(deviceId);
+        Optional<ServerAddress> address = actorContext.getRoutingService().resolveById(deviceId);
         if (address.isPresent()) {
             rpcService.tell(address.get(), msg);
         } else {

application/src/main/java/org/thingsboard/server/actors/session/ASyncMsgProcessor.java

@@ -116,7 +116,7 @@ class ASyncMsgProcessor extends AbstractSessionActorMsgProcessor {
     @Override
     public void processClusterEvent(ActorContext context, ClusterEventMsg msg) {
         if (pendingMap.size() > 0 || subscribedToAttributeUpdates || subscribedToRpcCommands) {
-            Optional<ServerAddress> newTargetServer = systemContext.getRoutingService().resolve(getDeviceId());
+            Optional<ServerAddress> newTargetServer = systemContext.getRoutingService().resolveById(getDeviceId());
             if (!newTargetServer.equals(currentTargetServer)) {
                 firstMsg = true;
                 currentTargetServer = newTargetServer;

application/src/main/java/org/thingsboard/server/actors/session/AbstractSessionActorMsgProcessor.java

@@ -81,13 +81,13 @@ abstract class AbstractSessionActorMsgProcessor extends AbstractContextAwareMsgP
     }
 
     protected Optional<ServerAddress> forwardToAppActor(ActorContext ctx, ToDeviceActorMsg toForward) {
-        Optional<ServerAddress> address = systemContext.getRoutingService().resolve(toForward.getDeviceId());
+        Optional<ServerAddress> address = systemContext.getRoutingService().resolveById(toForward.getDeviceId());
         forwardToAppActor(ctx, toForward, address);
         return address;
     }
 
     protected Optional<ServerAddress> forwardToAppActorIfAdressChanged(ActorContext ctx, ToDeviceActorMsg toForward, Optional<ServerAddress> oldAddress) {
-        Optional<ServerAddress> newAddress = systemContext.getRoutingService().resolve(toForward.getDeviceId());
+        Optional<ServerAddress> newAddress = systemContext.getRoutingService().resolveById(toForward.getDeviceId());
         if (!newAddress.equals(oldAddress)) {
             if (newAddress.isPresent()) {
                 systemContext.getRpcService().tell(newAddress.get(),

application/src/main/java/org/thingsboard/server/controller/AssetController.java

@@ -0,0 +1,234 @@
+/**
+ * Copyright © 2016-2017 The Thingsboard Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.thingsboard.server.controller;
+
+import com.google.common.util.concurrent.ListenableFuture;
+import org.springframework.http.HttpStatus;
+import org.springframework.security.access.prepost.PreAuthorize;
+import org.springframework.web.bind.annotation.*;
+import org.thingsboard.server.common.data.Customer;
+import org.thingsboard.server.common.data.asset.Asset;
+import org.thingsboard.server.common.data.id.AssetId;
+import org.thingsboard.server.common.data.id.CustomerId;
+import org.thingsboard.server.common.data.id.TenantId;
+import org.thingsboard.server.common.data.page.TextPageData;
+import org.thingsboard.server.common.data.page.TextPageLink;
+import org.thingsboard.server.dao.asset.AssetSearchQuery;
+import org.thingsboard.server.dao.exception.IncorrectParameterException;
+import org.thingsboard.server.dao.model.ModelConstants;
+import org.thingsboard.server.exception.ThingsboardException;
+import org.thingsboard.server.service.security.model.SecurityUser;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.stream.Collectors;
+
+@RestController
+@RequestMapping("/api")
+public class AssetController extends BaseController {
+
+    @PreAuthorize("hasAnyAuthority('TENANT_ADMIN', 'CUSTOMER_USER')")
+    @RequestMapping(value = "/asset/{assetId}", method = RequestMethod.GET)
+    @ResponseBody
+    public Asset getAssetById(@PathVariable("assetId") String strAssetId) throws ThingsboardException {
+        checkParameter("assetId", strAssetId);
+        try {
+            AssetId assetId = new AssetId(toUUID(strAssetId));
+            return checkAssetId(assetId);
+        } catch (Exception e) {
+            throw handleException(e);
+        }
+    }
+
+    @PreAuthorize("hasAuthority('TENANT_ADMIN')")
+    @RequestMapping(value = "/asset", method = RequestMethod.POST)
+    @ResponseBody
+    public Asset saveAsset(@RequestBody Asset asset) throws ThingsboardException {
+        try {
+            asset.setTenantId(getCurrentUser().getTenantId());
+            return checkNotNull(assetService.saveAsset(asset));
+        } catch (Exception e) {
+            throw handleException(e);
+        }
+    }
+
+    @PreAuthorize("hasAuthority('TENANT_ADMIN')")
+    @RequestMapping(value = "/asset/{assetId}", method = RequestMethod.DELETE)
+    @ResponseStatus(value = HttpStatus.OK)
+    public void deleteAsset(@PathVariable("assetId") String strAssetId) throws ThingsboardException {
+        checkParameter("assetId", strAssetId);
+        try {
+            AssetId assetId = new AssetId(toUUID(strAssetId));
+            checkAssetId(assetId);
+            assetService.deleteAsset(assetId);
+        } catch (Exception e) {
+            throw handleException(e);
+        }
+    }
+
+    @PreAuthorize("hasAuthority('TENANT_ADMIN')")
+    @RequestMapping(value = "/customer/{customerId}/asset/{assetId}", method = RequestMethod.POST)
+    @ResponseBody
+    public Asset assignAssetToCustomer(@PathVariable("customerId") String strCustomerId,
+                                       @PathVariable("assetId") String strAssetId) throws ThingsboardException {
+        checkParameter("customerId", strCustomerId);
+        checkParameter("assetId", strAssetId);
+        try {
+            CustomerId customerId = new CustomerId(toUUID(strCustomerId));
+            checkCustomerId(customerId);
+
+            AssetId assetId = new AssetId(toUUID(strAssetId));
+            checkAssetId(assetId);
+
+            return checkNotNull(assetService.assignAssetToCustomer(assetId, customerId));
+        } catch (Exception e) {
+            throw handleException(e);
+        }
+    }
+
+    @PreAuthorize("hasAuthority('TENANT_ADMIN')")
+    @RequestMapping(value = "/customer/asset/{assetId}", method = RequestMethod.DELETE)
+    @ResponseBody
+    public Asset unassignAssetFromCustomer(@PathVariable("assetId") String strAssetId) throws ThingsboardException {
+        checkParameter("assetId", strAssetId);
+        try {
+            AssetId assetId = new AssetId(toUUID(strAssetId));
+            Asset asset = checkAssetId(assetId);
+            if (asset.getCustomerId() == null || asset.getCustomerId().getId().equals(ModelConstants.NULL_UUID)) {
+                throw new IncorrectParameterException("Asset isn't assigned to any customer!");
+            }
+            return checkNotNull(assetService.unassignAssetFromCustomer(assetId));
+        } catch (Exception e) {
+            throw handleException(e);
+        }
+    }
+
+    @PreAuthorize("hasAuthority('TENANT_ADMIN')")
+    @RequestMapping(value = "/customer/public/asset/{assetId}", method = RequestMethod.POST)
+    @ResponseBody
+    public Asset assignAssetToPublicCustomer(@PathVariable("assetId") String strAssetId) throws ThingsboardException {
+        checkParameter("assetId", strAssetId);
+        try {
+            AssetId assetId = new AssetId(toUUID(strAssetId));
+            Asset asset = checkAssetId(assetId);
+            Customer publicCustomer = customerService.findOrCreatePublicCustomer(asset.getTenantId());
+            return checkNotNull(assetService.assignAssetToCustomer(assetId, publicCustomer.getId()));
+        } catch (Exception e) {
+            throw handleException(e);
+        }
+    }
+
+    @PreAuthorize("hasAuthority('TENANT_ADMIN')")
+    @RequestMapping(value = "/tenant/assets", params = {"limit"}, method = RequestMethod.GET)
+    @ResponseBody
+    public TextPageData<Asset> getTenantAssets(
+            @RequestParam int limit,
+            @RequestParam(required = false) String textSearch,
+            @RequestParam(required = false) String idOffset,
+            @RequestParam(required = false) String textOffset) throws ThingsboardException {
+        try {
+            TenantId tenantId = getCurrentUser().getTenantId();
+            TextPageLink pageLink = createPageLink(limit, textSearch, idOffset, textOffset);
+            return checkNotNull(assetService.findAssetsByTenantId(tenantId, pageLink));
+        } catch (Exception e) {
+            throw handleException(e);
+        }
+    }
+
+    @PreAuthorize("hasAuthority('TENANT_ADMIN')")
+    @RequestMapping(value = "/tenant/assets", params = {"assetName"}, method = RequestMethod.GET)
+    @ResponseBody
+    public Asset getTenantAsset(
+            @RequestParam String assetName) throws ThingsboardException {
+        try {
+            TenantId tenantId = getCurrentUser().getTenantId();
+            return checkNotNull(assetService.findAssetByTenantIdAndName(tenantId, assetName));
+        } catch (Exception e) {
+            throw handleException(e);
+        }
+    }
+
+    @PreAuthorize("hasAnyAuthority('TENANT_ADMIN', 'CUSTOMER_USER')")
+    @RequestMapping(value = "/customer/{customerId}/assets", params = {"limit"}, method = RequestMethod.GET)
+    @ResponseBody
+    public TextPageData<Asset> getCustomerAssets(
+            @PathVariable("customerId") String strCustomerId,
+            @RequestParam int limit,
+            @RequestParam(required = false) String textSearch,
+            @RequestParam(required = false) String idOffset,
+            @RequestParam(required = false) String textOffset) throws ThingsboardException {
+        checkParameter("customerId", strCustomerId);
+        try {
+            TenantId tenantId = getCurrentUser().getTenantId();
+            CustomerId customerId = new CustomerId(toUUID(strCustomerId));
+            checkCustomerId(customerId);
+            TextPageLink pageLink = createPageLink(limit, textSearch, idOffset, textOffset);
+            return checkNotNull(assetService.findAssetsByTenantIdAndCustomerId(tenantId, customerId, pageLink));
+        } catch (Exception e) {
+            throw handleException(e);
+        }
+    }
+
+    @PreAuthorize("hasAnyAuthority('TENANT_ADMIN', 'CUSTOMER_USER')")
+    @RequestMapping(value = "/assets", params = {"assetIds"}, method = RequestMethod.GET)
+    @ResponseBody
+    public List<Asset> getAssetsByIds(
+            @RequestParam("assetIds") String[] strAssetIds) throws ThingsboardException {
+        checkArrayParameter("assetIds", strAssetIds);
+        try {
+            SecurityUser user = getCurrentUser();
+            TenantId tenantId = user.getTenantId();
+            CustomerId customerId = user.getCustomerId();
+            List<AssetId> assetIds = new ArrayList<>();
+            for (String strAssetId : strAssetIds) {
+                assetIds.add(new AssetId(toUUID(strAssetId)));
+            }
+            ListenableFuture<List<Asset>> assets;
+            if (customerId == null || customerId.isNullUid()) {
+                assets = assetService.findAssetsByTenantIdAndIdsAsync(tenantId, assetIds);
+            } else {
+                assets = assetService.findAssetsByTenantIdCustomerIdAndIdsAsync(tenantId, customerId, assetIds);
+            }
+            return checkNotNull(assets.get());
+        } catch (Exception e) {
+            throw handleException(e);
+        }
+    }
+
+    @PreAuthorize("hasAnyAuthority('TENANT_ADMIN', 'CUSTOMER_USER')")
+    @RequestMapping(value = "/assets", method = RequestMethod.POST)
+    @ResponseBody
+    public List<Asset> findByQuery(@RequestBody AssetSearchQuery query) throws ThingsboardException {
+        checkNotNull(query);
+        checkNotNull(query.getParameters());
+        checkNotNull(query.getAssetTypes());
+        checkEntityId(query.getParameters().getEntityId());
+        try {
+            List<Asset> assets = checkNotNull(assetService.findAssetsByQuery(query).get());
+            assets = assets.stream().filter(asset -> {
+                try {
+                    checkAsset(asset);
+                    return true;
+                } catch (ThingsboardException e) {
+                    return false;
+                }
+            }).collect(Collectors.toList());
+            return assets;
+        } catch (Exception e) {
+            throw handleException(e);
+        }
+    }
+}

application/src/main/java/org/thingsboard/server/controller/BaseController.java

@@ -24,10 +24,8 @@ import org.springframework.security.core.Authentication;
 import org.springframework.security.core.context.SecurityContextHolder;
 import org.springframework.web.bind.annotation.ExceptionHandler;
 import org.thingsboard.server.actors.service.ActorService;
-import org.thingsboard.server.common.data.Customer;
-import org.thingsboard.server.common.data.Dashboard;
-import org.thingsboard.server.common.data.Device;
-import org.thingsboard.server.common.data.User;
+import org.thingsboard.server.common.data.*;
+import org.thingsboard.server.common.data.asset.Asset;
 import org.thingsboard.server.common.data.id.*;
 import org.thingsboard.server.common.data.page.TextPageLink;
 import org.thingsboard.server.common.data.page.TimePageLink;
@@ -38,6 +36,7 @@ import org.thingsboard.server.common.data.rule.RuleMetaData;
 import org.thingsboard.server.common.data.security.Authority;
 import org.thingsboard.server.common.data.widget.WidgetType;
 import org.thingsboard.server.common.data.widget.WidgetsBundle;
+import org.thingsboard.server.dao.asset.AssetService;
 import org.thingsboard.server.dao.customer.CustomerService;
 import org.thingsboard.server.dao.dashboard.DashboardService;
 import org.thingsboard.server.dao.device.DeviceCredentialsService;
@@ -46,6 +45,7 @@ import org.thingsboard.server.dao.exception.DataValidationException;
 import org.thingsboard.server.dao.exception.IncorrectParameterException;
 import org.thingsboard.server.dao.model.ModelConstants;
 import org.thingsboard.server.dao.plugin.PluginService;
+import org.thingsboard.server.dao.relation.RelationService;
 import org.thingsboard.server.dao.rule.RuleService;
 import org.thingsboard.server.dao.user.UserService;
 import org.thingsboard.server.dao.widget.WidgetTypeService;
@@ -80,6 +80,9 @@ public abstract class BaseController {
     @Autowired
     protected DeviceService deviceService;
 
+    @Autowired
+    protected AssetService assetService;
+
     @Autowired
     protected DeviceCredentialsService deviceCredentialsService;
 
@@ -104,6 +107,9 @@ public abstract class BaseController {
     @Autowired
     protected ActorService actorService;
 
+    @Autowired
+    protected RelationService relationService;
+
 
     @ExceptionHandler(ThingsboardException.class)
     public void handleThingsboardException(ThingsboardException ex, HttpServletResponse response) {
@@ -253,6 +259,43 @@ public abstract class BaseController {
         }
     }
 
+    protected void checkEntityId(EntityId entityId) throws ThingsboardException {
+        try {
+            checkNotNull(entityId);
+            validateId(entityId.getId(), "Incorrect entityId " + entityId);
+            switch (entityId.getEntityType()) {
+                case DEVICE:
+                    checkDevice(deviceService.findDeviceById(new DeviceId(entityId.getId())));
+                    return;
+                case CUSTOMER:
+                    checkCustomerId(new CustomerId(entityId.getId()));
+                    return;
+                case TENANT:
+                    checkTenantId(new TenantId(entityId.getId()));
+                    return;
+                case PLUGIN:
+                    checkPlugin(new PluginId(entityId.getId()));
+                    return;
+                case RULE:
+                    checkRule(new RuleId(entityId.getId()));
+                    return;
+                case ASSET:
+                    checkAsset(assetService.findAssetById(new AssetId(entityId.getId())));
+                    return;
+                case DASHBOARD:
+                    checkDashboardId(new DashboardId(entityId.getId()));
+                    return;
+                case USER:
+                    checkUserId(new UserId(entityId.getId()));
+                    return;
+                default:
+                    throw new IllegalArgumentException("Unsupported entity type: " + entityId.getEntityType());
+            }
+        } catch (Exception e) {
+            throw handleException(e, false);
+        }
+    }
+
     Device checkDeviceId(DeviceId deviceId) throws ThingsboardException {
         try {
             validateId(deviceId, "Incorrect deviceId " + deviceId);
@@ -272,6 +315,25 @@ public abstract class BaseController {
         }
     }
 
+    Asset checkAssetId(AssetId assetId) throws ThingsboardException {
+        try {
+            validateId(assetId, "Incorrect assetId " + assetId);
+            Asset asset = assetService.findAssetById(assetId);
+            checkAsset(asset);
+            return asset;
+        } catch (Exception e) {
+            throw handleException(e, false);
+        }
+    }
+
+    protected void checkAsset(Asset asset) throws ThingsboardException {
+        checkNotNull(asset);
+        checkTenantId(asset.getTenantId());
+        if (asset.getCustomerId() != null && !asset.getCustomerId().getId().equals(ModelConstants.NULL_UUID)) {
+            checkCustomerId(asset.getCustomerId());
+        }
+    }
+
     WidgetsBundle checkWidgetsBundleId(WidgetsBundleId widgetsBundleId, boolean modify) throws ThingsboardException {
         try {
             validateId(widgetsBundleId, "Incorrect widgetsBundleId " + widgetsBundleId);
@@ -387,6 +449,16 @@ public abstract class BaseController {
         return plugin;
     }
 
+    protected PluginMetaData checkPlugin(PluginId pluginId) throws ThingsboardException {
+        checkNotNull(pluginId);
+        return checkPlugin(pluginService.findPluginById(pluginId));
+    }
+
+    protected RuleMetaData checkRule(RuleId ruleId) throws ThingsboardException {
+        checkNotNull(ruleId);
+        return checkRule(ruleService.findRuleById(ruleId));
+    }
+
     protected RuleMetaData checkRule(RuleMetaData rule) throws ThingsboardException {
         checkNotNull(rule);
         SecurityUser authUser = getCurrentUser();
@@ -412,7 +484,8 @@ public abstract class BaseController {
         if (request.getHeader("x-forwarded-port") != null) {
             try {
                 serverPort = request.getIntHeader("x-forwarded-port");
-            } catch (NumberFormatException e) {}
+            } catch (NumberFormatException e) {
+            }
         }
 
         String baseUrl = String.format("%s://%s:%d",

application/src/main/java/org/thingsboard/server/controller/EntityRelationController.java

@@ -0,0 +1,194 @@
+/**
+ * Copyright © 2016-2017 The Thingsboard Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.thingsboard.server.controller;
+
+import org.springframework.http.HttpStatus;
+import org.springframework.security.access.prepost.PreAuthorize;
+import org.springframework.web.bind.annotation.*;
+import org.thingsboard.server.common.data.id.EntityId;
+import org.thingsboard.server.common.data.id.EntityIdFactory;
+import org.thingsboard.server.common.data.relation.EntityRelation;
+import org.thingsboard.server.dao.relation.EntityRelationsQuery;
+import org.thingsboard.server.exception.ThingsboardErrorCode;
+import org.thingsboard.server.exception.ThingsboardException;
+
+import java.util.List;
+
+
+@RestController
+@RequestMapping("/api")
+public class EntityRelationController extends BaseController {
+
+    @PreAuthorize("hasAnyAuthority('TENANT_ADMIN', 'CUSTOMER_USER')")
+    @RequestMapping(value = "/relation", method = RequestMethod.POST)
+    @ResponseStatus(value = HttpStatus.OK)
+    public void saveRelation(@RequestBody EntityRelation relation) throws ThingsboardException {
+        try {
+            checkNotNull(relation);
+            checkEntityId(relation.getFrom());
+            checkEntityId(relation.getTo());
+            relationService.saveRelation(relation).get();
+        } catch (Exception e) {
+            throw handleException(e);
+        }
+    }
+
+    @PreAuthorize("hasAnyAuthority('TENANT_ADMIN', 'CUSTOMER_USER')")
+    @RequestMapping(value = "/relation", method = RequestMethod.DELETE, params = {"fromId", "fromType", "relationType", "toId", "toType"})
+    @ResponseStatus(value = HttpStatus.OK)
+    public void deleteRelation(@RequestParam("fromId") String strFromId,
+                               @RequestParam("fromType") String strFromType, @RequestParam("relationType") String strRelationType,
+                               @RequestParam("toId") String strToId, @RequestParam("toType") String strToType) throws ThingsboardException {
+        checkParameter("fromId", strFromId);
+        checkParameter("fromType", strFromType);
+        checkParameter("relationType", strRelationType);
+        checkParameter("toId", strToId);
+        checkParameter("toType", strToType);
+        EntityId fromId = EntityIdFactory.getByTypeAndId(strFromType, strFromId);
+        EntityId toId = EntityIdFactory.getByTypeAndId(strToType, strToId);
+        checkEntityId(fromId);
+        checkEntityId(toId);
+        try {
+            Boolean found = relationService.deleteRelation(fromId, toId, strRelationType).get();
+            if (!found) {
+                throw new ThingsboardException("Requested item wasn't found!", ThingsboardErrorCode.ITEM_NOT_FOUND);
+            }
+        } catch (Exception e) {
+            throw handleException(e);
+        }
+    }
+
+    @PreAuthorize("hasAnyAuthority('TENANT_ADMIN', 'CUSTOMER_USER')")
+    @RequestMapping(value = "/relations", method = RequestMethod.DELETE, params = {"id", "type"})
+    @ResponseStatus(value = HttpStatus.OK)
+    public void deleteRelations(@RequestParam("entityId") String strId,
+                                @RequestParam("entityType") String strType) throws ThingsboardException {
+        checkParameter("entityId", strId);
+        checkParameter("entityType", strType);
+        EntityId entityId = EntityIdFactory.getByTypeAndId(strType, strId);
+        checkEntityId(entityId);
+        try {
+            relationService.deleteEntityRelations(entityId).get();
+        } catch (Exception e) {
+            throw handleException(e);
+        }
+    }
+
+    @PreAuthorize("hasAnyAuthority('TENANT_ADMIN', 'CUSTOMER_USER')")
+    @RequestMapping(value = "/relation", method = RequestMethod.GET, params = {"fromId", "fromType", "relationType", "toId", "toType"})
+    @ResponseStatus(value = HttpStatus.OK)
+    public void checkRelation(@RequestParam("fromId") String strFromId,
+                              @RequestParam("fromType") String strFromType, @RequestParam("relationType") String strRelationType,
+                              @RequestParam("toId") String strToId, @RequestParam("toType") String strToType) throws ThingsboardException {
+        try {
+            checkParameter("fromId", strFromId);
+            checkParameter("fromType", strFromType);
+            checkParameter("relationType", strRelationType);
+            checkParameter("toId", strToId);
+            checkParameter("toType", strToType);
+            EntityId fromId = EntityIdFactory.getByTypeAndId(strFromType, strFromId);
+            EntityId toId = EntityIdFactory.getByTypeAndId(strToType, strToId);
+            checkEntityId(fromId);
+            checkEntityId(toId);
+            Boolean found = relationService.checkRelation(fromId, toId, strRelationType).get();
+            if (!found) {
+                throw new ThingsboardException("Requested item wasn't found!", ThingsboardErrorCode.ITEM_NOT_FOUND);
+            }
+        } catch (Exception e) {
+            throw handleException(e);
+        }
+    }
+
+    @PreAuthorize("hasAnyAuthority('TENANT_ADMIN', 'CUSTOMER_USER')")
+    @RequestMapping(value = "/relations", method = RequestMethod.GET, params = {"fromId", "fromType"})
+    @ResponseBody
+    public List<EntityRelation> findByFrom(@RequestParam("fromId") String strFromId, @RequestParam("fromType") String strFromType) throws ThingsboardException {
+        checkParameter("fromId", strFromId);
+        checkParameter("fromType", strFromType);
+        EntityId entityId = EntityIdFactory.getByTypeAndId(strFromType, strFromId);
+        checkEntityId(entityId);
+        try {
+            return checkNotNull(relationService.findByFrom(entityId).get());
+        } catch (Exception e) {
+            throw handleException(e);
+        }
+    }
+
+    @PreAuthorize("hasAnyAuthority('TENANT_ADMIN', 'CUSTOMER_USER')")
+    @RequestMapping(value = "/relations", method = RequestMethod.GET, params = {"fromId", "fromType", "relationType"})
+    @ResponseBody
+    public List<EntityRelation> findByFrom(@RequestParam("fromId") String strFromId, @RequestParam("fromType") String strFromType
+            , @RequestParam("relationType") String strRelationType) throws ThingsboardException {
+        checkParameter("fromId", strFromId);
+        checkParameter("fromType", strFromType);
+        checkParameter("relationType", strRelationType);
+        EntityId entityId = EntityIdFactory.getByTypeAndId(strFromType, strFromId);
+        checkEntityId(entityId);
+        try {
+            return checkNotNull(relationService.findByFromAndType(entityId, strRelationType).get());
+        } catch (Exception e) {
+            throw handleException(e);
+        }
+    }
+
+    @PreAuthorize("hasAnyAuthority('TENANT_ADMIN', 'CUSTOMER_USER')")
+    @RequestMapping(value = "/relations", method = RequestMethod.GET, params = {"toId", "toType"})
+    @ResponseBody
+    public List<EntityRelation> findByTo(@RequestParam("toId") String strToId, @RequestParam("toType") String strToType) throws ThingsboardException {
+        checkParameter("toId", strToId);
+        checkParameter("toType", strToType);
+        EntityId entityId = EntityIdFactory.getByTypeAndId(strToType, strToId);
+        checkEntityId(entityId);
+        try {
+            return checkNotNull(relationService.findByTo(entityId).get());
+        } catch (Exception e) {
+            throw handleException(e);
+        }
+    }
+
+    @PreAuthorize("hasAnyAuthority('TENANT_ADMIN', 'CUSTOMER_USER')")
+    @RequestMapping(value = "/relations", method = RequestMethod.GET, params = {"toId", "toType", "relationType"})
+    @ResponseBody
+    public List<EntityRelation> findByTo(@RequestParam("toId") String strToId, @RequestParam("toType") String strToType
+            , @RequestParam("relationType") String strRelationType) throws ThingsboardException {
+        checkParameter("toId", strToId);
+        checkParameter("toType", strToType);
+        checkParameter("relationType", strRelationType);
+        EntityId entityId = EntityIdFactory.getByTypeAndId(strToType, strToId);
+        checkEntityId(entityId);
+        try {
+            return checkNotNull(relationService.findByToAndType(entityId, strRelationType).get());
+        } catch (Exception e) {
+            throw handleException(e);
+        }
+    }
+
+    @PreAuthorize("hasAnyAuthority('TENANT_ADMIN', 'CUSTOMER_USER')")
+    @RequestMapping(value = "/relations", method = RequestMethod.POST)
+    @ResponseBody
+    public List<EntityRelation> findByQuery(@RequestBody EntityRelationsQuery query) throws ThingsboardException {
+        checkNotNull(query);
+        checkNotNull(query.getParameters());
+        checkNotNull(query.getFilters());
+        checkEntityId(query.getParameters().getEntityId());
+        try {
+            return checkNotNull(relationService.findByQuery(query).get());
+        } catch (Exception e) {
+            throw handleException(e);
+        }
+    }
+
+}

application/src/main/java/org/thingsboard/server/controller/EventController.java

@@ -18,7 +18,6 @@ package org.thingsboard.server.controller;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.security.access.prepost.PreAuthorize;
 import org.springframework.web.bind.annotation.*;
-import org.thingsboard.server.common.data.EntityType;
 import org.thingsboard.server.common.data.Event;
 import org.thingsboard.server.common.data.id.*;
 import org.thingsboard.server.common.data.page.TimePageData;
@@ -59,7 +58,7 @@ public class EventController extends BaseController {
                         ThingsboardErrorCode.PERMISSION_DENIED);
             }
             TimePageLink pageLink = createPageLink(limit, startTime, endTime, ascOrder, offset);
-            return checkNotNull(eventService.findEvents(tenantId, getEntityId(strEntityType, strEntityId), eventType, pageLink));
+            return checkNotNull(eventService.findEvents(tenantId, EntityIdFactory.getByTypeAndId(strEntityType, strEntityId), eventType, pageLink));
         } catch (Exception e) {
             throw handleException(e);
         }
@@ -88,29 +87,10 @@ public class EventController extends BaseController {
                         ThingsboardErrorCode.PERMISSION_DENIED);
             }
             TimePageLink pageLink = createPageLink(limit, startTime, endTime, ascOrder, offset);
-            return checkNotNull(eventService.findEvents(tenantId, getEntityId(strEntityType, strEntityId), pageLink));
+            return checkNotNull(eventService.findEvents(tenantId, EntityIdFactory.getByTypeAndId(strEntityType, strEntityId), pageLink));
         } catch (Exception e) {
             throw handleException(e);
         }
     }
 
-
-    private EntityId getEntityId(String strEntityType, String strEntityId) throws ThingsboardException {
-        EntityId entityId;
-        EntityType entityType = EntityType.valueOf(strEntityType);
-        switch (entityType) {
-            case RULE:
-                entityId = new RuleId(toUUID(strEntityId));
-                break;
-            case PLUGIN:
-                entityId = new PluginId(toUUID(strEntityId));
-                break;
-            case DEVICE:
-                entityId = new DeviceId(toUUID(strEntityId));
-                break;
-            default:
-                throw new ThingsboardException("EntityType ['" + entityType + "'] is incorrect!", ThingsboardErrorCode.BAD_REQUEST_PARAMS);
-        }
-        return entityId;
-    }
 }

application/src/main/java/org/thingsboard/server/service/cluster/routing/ClusterRoutingService.java

@@ -15,11 +15,13 @@
  */
 package org.thingsboard.server.service.cluster.routing;
 
+import org.thingsboard.server.common.data.id.EntityId;
 import org.thingsboard.server.common.data.id.UUIDBased;
 import org.thingsboard.server.common.msg.cluster.ServerAddress;
 import org.thingsboard.server.service.cluster.discovery.ServerInstance;
 
 import java.util.Optional;
+import java.util.UUID;
 
 /**
  * @author Andrew Shvayka
@@ -28,6 +30,8 @@ public interface ClusterRoutingService {
 
     ServerAddress getCurrentServer();
 
-    Optional<ServerAddress> resolve(UUIDBased entityId);
+    Optional<ServerAddress> resolveByUuid(UUID uuid);
+
+    Optional<ServerAddress> resolveById(EntityId entityId);
 
 }

application/src/main/java/org/thingsboard/server/service/cluster/routing/ConsistentClusterRoutingService.java

@@ -22,6 +22,7 @@ import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.beans.factory.annotation.Value;
 import org.springframework.stereotype.Service;
 import org.springframework.util.Assert;
+import org.thingsboard.server.common.data.id.EntityId;
 import org.thingsboard.server.common.data.id.UUIDBased;
 import org.thingsboard.server.common.msg.cluster.ServerAddress;
 import org.thingsboard.server.service.cluster.discovery.DiscoveryService;
@@ -31,6 +32,7 @@ import org.thingsboard.server.utils.MiscUtils;
 
 import javax.annotation.PostConstruct;
 import java.util.Optional;
+import java.util.UUID;
 import java.util.concurrent.ConcurrentNavigableMap;
 import java.util.concurrent.ConcurrentSkipListMap;
 
@@ -77,13 +79,18 @@ public class ConsistentClusterRoutingService implements ClusterRoutingService, D
     }
 
     @Override
-    public Optional<ServerAddress> resolve(UUIDBased entityId) {
-        Assert.notNull(entityId);
+    public Optional<ServerAddress> resolveById(EntityId entityId) {
+        return resolveByUuid(entityId.getId());
+    }
+
+    @Override
+    public Optional<ServerAddress> resolveByUuid(UUID uuid) {
+        Assert.notNull(uuid);
         if (circle.isEmpty()) {
             return Optional.empty();
         }
-        Long hash = hashFunction.newHasher().putLong(entityId.getId().getMostSignificantBits())
-                .putLong(entityId.getId().getLeastSignificantBits()).hash().asLong();
+        Long hash = hashFunction.newHasher().putLong(uuid.getMostSignificantBits())
+                .putLong(uuid.getLeastSignificantBits()).hash().asLong();
         if (!circle.containsKey(hash)) {
             ConcurrentNavigableMap<Long, ServerInstance> tailMap =
                     circle.tailMap(hash);

application/src/main/resources/thingsboard.yml

@@ -60,8 +60,8 @@ plugins:
 
 # JWT Token parameters
 security.jwt:
-  tokenExpirationTime: "${JWT_TOKEN_EXPIRATION_TIME:900}" # Number of seconds (15 mins)
-  refreshTokenExpTime: "${JWT_REFRESH_TOKEN_EXPIRATION_TIME:3600}" # Seconds (1 hour)
+  tokenExpirationTime: "${JWT_TOKEN_EXPIRATION_TIME:9000000}" # Number of seconds (15 mins)
+  refreshTokenExpTime: "${JWT_REFRESH_TOKEN_EXPIRATION_TIME:36000000}" # Seconds (1 hour)
   tokenIssuer: "${JWT_TOKEN_ISSUER:thingsboard.io}"
   tokenSigningKey: "${JWT_TOKEN_SIGNING_KEY:thingsboardDefaultSigningKey}"
 

application/src/test/java/org/thingsboard/server/actors/DefaultActorServiceTest.java

@@ -145,7 +145,7 @@ public class DefaultActorServiceTest {
         ReflectionTestUtils.setField(actorContext, "eventService", eventService);
 
 
-        when(routingService.resolve(any())).thenReturn(Optional.empty());
+        when(routingService.resolveById((EntityId) any())).thenReturn(Optional.empty());
 
         when(discoveryService.getCurrentServer()).thenReturn(serverInstance);
 
@@ -239,7 +239,7 @@ public class DefaultActorServiceTest {
         List<TsKvEntry> expected = new ArrayList<>();
         expected.add(new BasicTsKvEntry(ts, entry1));
         expected.add(new BasicTsKvEntry(ts, entry2));
-        verify(tsService, Mockito.timeout(5000)).save(DataConstants.DEVICE, deviceId, expected);
+        verify(tsService, Mockito.timeout(5000)).save(deviceId, expected);
     }
 
 }

common/data/src/main/java/org/thingsboard/server/common/data/EntityType.java

@@ -19,5 +19,5 @@ package org.thingsboard.server.common.data;
  * @author Andrew Shvayka
  */
 public enum EntityType {
-    TENANT, DEVICE, CUSTOMER, RULE, PLUGIN
+    TENANT, CUSTOMER, USER, RULE, PLUGIN, DASHBOARD, ASSET, DEVICE, ALARM
 }

common/data/src/main/java/org/thingsboard/server/common/data/alarm/Alarm.java

@@ -0,0 +1,51 @@
+/**
+ * Copyright © 2016-2017 The Thingsboard Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.thingsboard.server.common.data.alarm;
+
+import com.fasterxml.jackson.databind.JsonNode;
+import lombok.Data;
+import org.thingsboard.server.common.data.BaseData;
+import org.thingsboard.server.common.data.id.AssetId;
+import org.thingsboard.server.common.data.id.EntityId;
+import org.thingsboard.server.common.data.id.TenantId;
+
+/**
+ * Created by ashvayka on 11.05.17.
+ */
+@Data
+public class Alarm extends BaseData<AlarmId> {
+
+    private TenantId tenantId;
+    private String type;
+    private EntityId originator;
+    private AlarmSeverity severity;
+    private AlarmStatus status;
+    private long startTs;
+    private long endTs;
+    private long ackTs;
+    private long clearTs;
+    private JsonNode details;
+    private boolean propagate;
+
+    public Alarm() {
+        super();
+    }
+
+    public Alarm(AlarmId id) {
+        super(id);
+    }
+
+}

common/data/src/main/java/org/thingsboard/server/common/data/alarm/AlarmId.java

@@ -0,0 +1,45 @@
+/**
+ * Copyright © 2016-2017 The Thingsboard Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.thingsboard.server.common.data.alarm;
+
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonIgnore;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import org.thingsboard.server.common.data.EntityType;
+import org.thingsboard.server.common.data.id.EntityId;
+import org.thingsboard.server.common.data.id.UUIDBased;
+
+import java.util.UUID;
+
+public class AlarmId extends UUIDBased implements EntityId {
+
+    private static final long serialVersionUID = 1L;
+
+    @JsonCreator
+    public AlarmId(@JsonProperty("id") UUID id) {
+        super(id);
+    }
+
+    public static AlarmId fromString(String alarmId) {
+        return new AlarmId(UUID.fromString(alarmId));
+    }
+
+    @JsonIgnore
+    @Override
+    public EntityType getEntityType() {
+        return EntityType.ALARM;
+    }
+}

common/data/src/main/java/org/thingsboard/server/common/data/alarm/AlarmQuery.java

@@ -0,0 +1,34 @@
+/**
+ * Copyright © 2016-2017 The Thingsboard Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.thingsboard.server.common.data.alarm;
+
+import lombok.Data;
+import org.thingsboard.server.common.data.id.EntityId;
+import org.thingsboard.server.common.data.id.TenantId;
+import org.thingsboard.server.common.data.page.TimePageLink;
+
+/**
+ * Created by ashvayka on 11.05.17.
+ */
+@Data
+public class AlarmQuery {
+
+    private TenantId tenantId;
+    private EntityId affectedEntityId;
+    private TimePageLink pageLink;
+    private AlarmStatus status;
+
+}

common/data/src/main/java/org/thingsboard/server/common/data/alarm/AlarmSeverity.java

@@ -0,0 +1,25 @@
+/**
+ * Copyright © 2016-2017 The Thingsboard Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.thingsboard.server.common.data.alarm;
+
+/**
+ * Created by ashvayka on 11.05.17.
+ */
+public enum AlarmSeverity {
+
+    CRITICAL, MAJOR, MINOR, WARNING, INDETERMINATE;
+
+}

common/data/src/main/java/org/thingsboard/server/common/data/alarm/AlarmStatus.java

@@ -0,0 +1,33 @@
+/**
+ * Copyright © 2016-2017 The Thingsboard Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.thingsboard.server.common.data.alarm;
+
+/**
+ * Created by ashvayka on 11.05.17.
+ */
+public enum AlarmStatus {
+
+    ACTIVE_UNACK, ACTIVE_ACK, CLEARED_UNACK, CLEARED_ACK;
+
+    public boolean isAck() {
+        return this == ACTIVE_ACK || this == CLEARED_ACK;
+    }
+
+    public boolean isCleared() {
+        return this == CLEARED_ACK || this == CLEARED_UNACK;
+    }
+
+}

common/data/src/main/java/org/thingsboard/server/common/data/asset/Asset.java

@@ -0,0 +1,166 @@
+/**
+ * Copyright © 2016-2017 The Thingsboard Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.thingsboard.server.common.data.asset;
+
+import com.fasterxml.jackson.databind.JsonNode;
+import org.thingsboard.server.common.data.SearchTextBased;
+import org.thingsboard.server.common.data.id.AssetId;
+import org.thingsboard.server.common.data.id.CustomerId;
+import org.thingsboard.server.common.data.id.TenantId;
+
+public class Asset extends SearchTextBased<AssetId> {
+
+    private static final long serialVersionUID = 2807343040519543363L;
+
+    private TenantId tenantId;
+    private CustomerId customerId;
+    private String name;
+    private String type;
+    private JsonNode additionalInfo;
+
+    public Asset() {
+        super();
+    }
+
+    public Asset(AssetId id) {
+        super(id);
+    }
+
+    public Asset(Asset asset) {
+        super(asset);
+        this.tenantId = asset.getTenantId();
+        this.customerId = asset.getCustomerId();
+        this.name = asset.getName();
+        this.type = asset.getType();
+        this.additionalInfo = asset.getAdditionalInfo();
+    }
+
+    public TenantId getTenantId() {
+        return tenantId;
+    }
+
+    public void setTenantId(TenantId tenantId) {
+        this.tenantId = tenantId;
+    }
+
+    public CustomerId getCustomerId() {
+        return customerId;
+    }
+
+    public void setCustomerId(CustomerId customerId) {
+        this.customerId = customerId;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public String getType() {
+        return type;
+    }
+
+    public void setType(String type) {
+        this.type = type;
+    }
+
+    public JsonNode getAdditionalInfo() {
+        return additionalInfo;
+    }
+
+    public void setAdditionalInfo(JsonNode additionalInfo) {
+        this.additionalInfo = additionalInfo;
+    }
+    
+    @Override
+    public String getSearchText() {
+        return name;
+    }
+
+    @Override
+    public int hashCode() {
+        final int prime = 31;
+        int result = super.hashCode();
+        result = prime * result + ((additionalInfo == null) ? 0 : additionalInfo.hashCode());
+        result = prime * result + ((customerId == null) ? 0 : customerId.hashCode());
+        result = prime * result + ((name == null) ? 0 : name.hashCode());
+        result = prime * result + ((type == null) ? 0 : type.hashCode());
+        result = prime * result + ((tenantId == null) ? 0 : tenantId.hashCode());
+        return result;
+    }
+
+    @Override
+    public boolean equals(Object obj) {
+        if (this == obj)
+            return true;
+        if (!super.equals(obj))
+            return false;
+        if (getClass() != obj.getClass())
+            return false;
+        Asset other = (Asset) obj;
+        if (additionalInfo == null) {
+            if (other.additionalInfo != null)
+                return false;
+        } else if (!additionalInfo.equals(other.additionalInfo))
+            return false;
+        if (customerId == null) {
+            if (other.customerId != null)
+                return false;
+        } else if (!customerId.equals(other.customerId))
+            return false;
+        if (name == null) {
+            if (other.name != null)
+                return false;
+        } else if (!name.equals(other.name))
+            return false;
+        if (type == null) {
+            if (other.type != null)
+                return false;
+        } else if (!type.equals(other.type))
+            return false;
+        if (tenantId == null) {
+            if (other.tenantId != null)
+                return false;
+        } else if (!tenantId.equals(other.tenantId))
+            return false;
+        return true;
+    }
+
+    @Override
+    public String toString() {
+        StringBuilder builder = new StringBuilder();
+        builder.append("Asset [tenantId=");
+        builder.append(tenantId);
+        builder.append(", customerId=");
+        builder.append(customerId);
+        builder.append(", name=");
+        builder.append(name);
+        builder.append(", type=");
+        builder.append(type);
+        builder.append(", additionalInfo=");
+        builder.append(additionalInfo);
+        builder.append(", createdTime=");
+        builder.append(createdTime);
+        builder.append(", id=");
+        builder.append(id);
+        builder.append("]");
+        return builder.toString();
+    }
+
+}

common/data/src/main/java/org/thingsboard/server/common/data/id/AssetId.java

@@ -0,0 +1,43 @@
+/**
+ * Copyright © 2016-2017 The Thingsboard Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.thingsboard.server.common.data.id;
+
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonIgnore;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import org.thingsboard.server.common.data.EntityType;
+
+import java.util.UUID;
+
+public class AssetId extends UUIDBased implements EntityId {
+
+    private static final long serialVersionUID = 1L;
+
+    @JsonCreator
+    public AssetId(@JsonProperty("id") UUID id) {
+        super(id);
+    }
+
+    public static AssetId fromString(String assetId) {
+        return new AssetId(UUID.fromString(assetId));
+    }
+
+    @JsonIgnore
+    @Override
+    public EntityType getEntityType() {
+        return EntityType.ASSET;
+    }
+}

common/data/src/main/java/org/thingsboard/server/common/data/id/DashboardId.java

@@ -18,12 +18,24 @@ package org.thingsboard.server.common.data.id;
 import java.util.UUID;
 
 import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonIgnore;
 import com.fasterxml.jackson.annotation.JsonProperty;
+import org.thingsboard.server.common.data.EntityType;
 
-public class DashboardId extends UUIDBased {
+public class DashboardId extends UUIDBased implements EntityId {
 
     @JsonCreator
-    public DashboardId(@JsonProperty("id") UUID id){
+    public DashboardId(@JsonProperty("id") UUID id) {
         super(id);
     }
+
+    public static DashboardId fromString(String dashboardId) {
+        return new DashboardId(UUID.fromString(dashboardId));
+    }
+
+    @JsonIgnore
+    @Override
+    public EntityType getEntityType() {
+        return EntityType.DASHBOARD;
+    }
 }

common/data/src/main/java/org/thingsboard/server/common/data/id/EntityId.java

@@ -16,6 +16,8 @@
 package org.thingsboard.server.common.data.id;
 
 import com.fasterxml.jackson.annotation.JsonIgnore;
+import com.fasterxml.jackson.databind.annotation.JsonDeserialize;
+import com.fasterxml.jackson.databind.annotation.JsonSerialize;
 import org.thingsboard.server.common.data.EntityType;
 
 import java.util.UUID;
@@ -23,6 +25,9 @@ import java.util.UUID;
 /**
  * @author Andrew Shvayka
  */
+
+@JsonDeserialize(using = EntityIdDeserializer.class)
+@JsonSerialize(using = EntityIdSerializer.class)
 public interface EntityId {
 
     UUID NULL_UUID = UUID.fromString("13814000-1dd2-11b2-8080-808080808080");

common/data/src/main/java/org/thingsboard/server/common/data/id/EntityIdDeserializer.java

@@ -0,0 +1,43 @@
+/**
+ * Copyright © 2016-2017 The Thingsboard Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.thingsboard.server.common.data.id;
+
+import com.fasterxml.jackson.core.JsonParser;
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.core.ObjectCodec;
+import com.fasterxml.jackson.databind.DeserializationContext;
+import com.fasterxml.jackson.databind.JsonDeserializer;
+import com.fasterxml.jackson.databind.node.ObjectNode;
+
+import java.io.IOException;
+
+/**
+ * Created by ashvayka on 11.05.17.
+ */
+public class EntityIdDeserializer extends JsonDeserializer<EntityId> {
+
+    @Override
+    public EntityId deserialize(JsonParser jsonParser, DeserializationContext ctx) throws IOException, JsonProcessingException {
+        ObjectCodec oc = jsonParser.getCodec();
+        ObjectNode node = oc.readTree(jsonParser);
+        if (node.has("entityType") && node.has("id")) {
+            return EntityIdFactory.getByTypeAndId(node.get("entityType").asText(), node.get("id").asText());
+        } else {
+            throw new IOException("Missing entityType or id!");
+        }
+    }
+
+}

common/data/src/main/java/org/thingsboard/server/common/data/id/EntityIdFactory.java

@@ -0,0 +1,56 @@
+/**
+ * Copyright © 2016-2017 The Thingsboard Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.thingsboard.server.common.data.id;
+
+import org.thingsboard.server.common.data.EntityType;
+
+import java.util.UUID;
+
+/**
+ * Created by ashvayka on 25.04.17.
+ */
+public class EntityIdFactory {
+
+    public static EntityId getByTypeAndId(String type, String uuid) {
+        return getByTypeAndUuid(EntityType.valueOf(type), UUID.fromString(uuid));
+    }
+
+    public static EntityId getByTypeAndUuid(String type, UUID uuid) {
+        return getByTypeAndUuid(EntityType.valueOf(type), uuid);
+    }
+
+    public static EntityId getByTypeAndUuid(EntityType type, UUID uuid) {
+        switch (type) {
+            case TENANT:
+                return new TenantId(uuid);
+            case CUSTOMER:
+                return new CustomerId(uuid);
+            case USER:
+                return new UserId(uuid);
+            case RULE:
+                return new RuleId(uuid);
+            case PLUGIN:
+                return new PluginId(uuid);
+            case DASHBOARD:
+                return new DashboardId(uuid);
+            case DEVICE:
+                return new DeviceId(uuid);
+            case ASSET:
+                return new AssetId(uuid);
+        }
+        throw new IllegalArgumentException("EntityType " + type + " is not supported!");
+    }
+}

common/data/src/main/java/org/thingsboard/server/common/data/id/EntityIdSerializer.java

@@ -0,0 +1,37 @@
+/**
+ * Copyright © 2016-2017 The Thingsboard Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.thingsboard.server.common.data.id;
+
+import com.fasterxml.jackson.core.JsonGenerator;
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.databind.JsonSerializer;
+import com.fasterxml.jackson.databind.SerializerProvider;
+
+import java.io.IOException;
+
+/**
+ * Created by ashvayka on 11.05.17.
+ */
+public class EntityIdSerializer extends JsonSerializer<EntityId> {
+
+    @Override
+    public void serialize(EntityId value, JsonGenerator gen, SerializerProvider serializers) throws IOException, JsonProcessingException {
+        gen.writeStartObject();
+        gen.writeStringField("entityType", value.getEntityType().name());
+        gen.writeStringField("id", value.getId().toString());
+        gen.writeEndObject();
+    }
+}

common/data/src/main/java/org/thingsboard/server/common/data/id/UserId.java

@@ -18,12 +18,25 @@ package org.thingsboard.server.common.data.id;
 import java.util.UUID;
 
 import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonIgnore;
 import com.fasterxml.jackson.annotation.JsonProperty;
+import org.thingsboard.server.common.data.EntityType;
 
-public class UserId extends UUIDBased {
+public class UserId extends UUIDBased implements EntityId {
 
     @JsonCreator
-	public UserId(@JsonProperty("id") UUID id){
-		super(id);
-	}
+    public UserId(@JsonProperty("id") UUID id) {
+        super(id);
+    }
+
+    public static UserId fromString(String userId) {
+        return new UserId(UUID.fromString(userId));
+    }
+
+    @JsonIgnore
+    @Override
+    public EntityType getEntityType() {
+        return EntityType.USER;
+    }
+
 }

common/data/src/main/java/org/thingsboard/server/common/data/relation/EntityRelation.java

@@ -0,0 +1,103 @@
+/**
+ * Copyright © 2016-2017 The Thingsboard Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.thingsboard.server.common.data.relation;
+
+import com.fasterxml.jackson.databind.JsonNode;
+import org.thingsboard.server.common.data.id.EntityId;
+
+import java.util.Objects;
+
+public class EntityRelation {
+
+    private static final long serialVersionUID = 2807343040519543363L;
+
+    public static final String CONTAINS_TYPE = "Contains";
+    public static final String MANAGES_TYPE = "Manages";
+
+    private EntityId from;
+    private EntityId to;
+    private String type;
+    private JsonNode additionalInfo;
+
+    public EntityRelation() {
+        super();
+    }
+
+    public EntityRelation(EntityId from, EntityId to, String type) {
+        this(from, to, type, null);
+    }
+
+    public EntityRelation(EntityId from, EntityId to, String type, JsonNode additionalInfo) {
+        this.from = from;
+        this.to = to;
+        this.type = type;
+        this.additionalInfo = additionalInfo;
+    }
+
+    public EntityRelation(EntityRelation device) {
+        this.from = device.getFrom();
+        this.to = device.getTo();
+        this.type = device.getType();
+        this.additionalInfo = device.getAdditionalInfo();
+    }
+
+    public EntityId getFrom() {
+        return from;
+    }
+
+    public void setFrom(EntityId from) {
+        this.from = from;
+    }
+
+    public EntityId getTo() {
+        return to;
+    }
+
+    public void setTo(EntityId to) {
+        this.to = to;
+    }
+
+    public String getType() {
+        return type;
+    }
+
+    public void setType(String type) {
+        this.type = type;
+    }
+
+    public JsonNode getAdditionalInfo() {
+        return additionalInfo;
+    }
+
+    public void setAdditionalInfo(JsonNode additionalInfo) {
+        this.additionalInfo = additionalInfo;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) return true;
+        if (o == null || getClass() != o.getClass()) return false;
+        EntityRelation relation = (EntityRelation) o;
+        return Objects.equals(from, relation.from) &&
+                Objects.equals(to, relation.to) &&
+                Objects.equals(type, relation.type);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(from, to, type);
+    }
+}

dao/src/main/java/org/thingsboard/server/dao/alarm/AlarmDao.java

@@ -0,0 +1,34 @@
+/**
+ * Copyright © 2016-2017 The Thingsboard Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.thingsboard.server.dao.alarm;
+
+import com.google.common.util.concurrent.ListenableFuture;
+import org.thingsboard.server.common.data.alarm.Alarm;
+import org.thingsboard.server.common.data.id.EntityId;
+import org.thingsboard.server.common.data.id.TenantId;
+import org.thingsboard.server.dao.Dao;
+import org.thingsboard.server.dao.model.AlarmEntity;
+
+/**
+ * Created by ashvayka on 11.05.17.
+ */
+public interface AlarmDao extends Dao<AlarmEntity> {
+
+    ListenableFuture<Alarm> findLatestByOriginatorAndType(TenantId tenantId, EntityId originator, String type);
+
+    AlarmEntity save(Alarm alarm);
+
+}

dao/src/main/java/org/thingsboard/server/dao/alarm/AlarmDaoImpl.java

@@ -0,0 +1,53 @@
+/**
+ * Copyright © 2016-2017 The Thingsboard Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.thingsboard.server.dao.alarm;
+
+import com.google.common.util.concurrent.ListenableFuture;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.stereotype.Component;
+import org.thingsboard.server.common.data.alarm.Alarm;
+import org.thingsboard.server.common.data.id.EntityId;
+import org.thingsboard.server.common.data.id.TenantId;
+import org.thingsboard.server.dao.AbstractModelDao;
+import org.thingsboard.server.dao.model.AlarmEntity;
+
+import static org.thingsboard.server.dao.model.ModelConstants.ALARM_COLUMN_FAMILY_NAME;
+
+@Component
+@Slf4j
+public class AlarmDaoImpl extends AbstractModelDao<AlarmEntity> implements AlarmDao {
+
+    @Override
+    protected Class<AlarmEntity> getColumnFamilyClass() {
+        return AlarmEntity.class;
+    }
+
+    @Override
+    protected String getColumnFamilyName() {
+        return ALARM_COLUMN_FAMILY_NAME;
+    }
+
+    @Override
+    public AlarmEntity save(Alarm alarm) {
+        log.debug("Save asset [{}] ", alarm);
+        return save(new AlarmEntity(alarm));
+    }
+
+    @Override
+    public ListenableFuture<Alarm> findLatestByOriginatorAndType(TenantId tenantId, EntityId originator, String type) {
+        return null;
+    }
+}

dao/src/main/java/org/thingsboard/server/dao/alarm/AlarmService.java

@@ -0,0 +1,42 @@
+/**
+ * Copyright © 2016-2017 The Thingsboard Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.thingsboard.server.dao.alarm;
+
+import com.google.common.util.concurrent.ListenableFuture;
+import org.thingsboard.server.common.data.alarm.Alarm;
+import org.thingsboard.server.common.data.alarm.AlarmId;
+import org.thingsboard.server.common.data.alarm.AlarmQuery;
+import org.thingsboard.server.common.data.id.EntityId;
+import org.thingsboard.server.common.data.page.TimePageData;
+
+import java.util.Optional;
+
+/**
+ * Created by ashvayka on 11.05.17.
+ */
+public interface AlarmService {
+
+    Alarm createOrUpdateAlarm(Alarm alarm);
+
+    ListenableFuture<Boolean> updateAlarm(Alarm alarm);
+
+    ListenableFuture<Boolean> ackAlarm(AlarmId alarmId, long ackTs);
+
+    ListenableFuture<Boolean> clearAlarm(AlarmId alarmId, long ackTs);
+
+    ListenableFuture<TimePageData<Alarm>> findAlarms(AlarmQuery query);
+
+}

dao/src/main/java/org/thingsboard/server/dao/alarm/BaseAlarmService.java

@@ -0,0 +1,266 @@
+/**
+ * Copyright © 2016-2017 The Thingsboard Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.thingsboard.server.dao.alarm;
+
+
+import com.google.common.base.Function;
+import com.google.common.util.concurrent.AsyncFunction;
+import com.google.common.util.concurrent.Futures;
+import com.google.common.util.concurrent.ListenableFuture;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+import org.springframework.util.StringUtils;
+import org.thingsboard.server.common.data.EntityType;
+import org.thingsboard.server.common.data.alarm.Alarm;
+import org.thingsboard.server.common.data.alarm.AlarmId;
+import org.thingsboard.server.common.data.alarm.AlarmQuery;
+import org.thingsboard.server.common.data.alarm.AlarmStatus;
+import org.thingsboard.server.common.data.asset.Asset;
+import org.thingsboard.server.common.data.id.AssetId;
+import org.thingsboard.server.common.data.id.CustomerId;
+import org.thingsboard.server.common.data.id.EntityId;
+import org.thingsboard.server.common.data.id.TenantId;
+import org.thingsboard.server.common.data.page.TextPageData;
+import org.thingsboard.server.common.data.page.TextPageLink;
+import org.thingsboard.server.common.data.page.TimePageData;
+import org.thingsboard.server.common.data.relation.EntityRelation;
+import org.thingsboard.server.dao.asset.AssetDao;
+import org.thingsboard.server.dao.asset.AssetSearchQuery;
+import org.thingsboard.server.dao.asset.AssetService;
+import org.thingsboard.server.dao.customer.CustomerDao;
+import org.thingsboard.server.dao.entity.BaseEntityService;
+import org.thingsboard.server.dao.exception.DataValidationException;
+import org.thingsboard.server.dao.model.AlarmEntity;
+import org.thingsboard.server.dao.model.AssetEntity;
+import org.thingsboard.server.dao.model.CustomerEntity;
+import org.thingsboard.server.dao.model.TenantEntity;
+import org.thingsboard.server.dao.relation.EntityRelationsQuery;
+import org.thingsboard.server.dao.relation.EntitySearchDirection;
+import org.thingsboard.server.dao.relation.RelationService;
+import org.thingsboard.server.dao.relation.RelationsSearchParameters;
+import org.thingsboard.server.dao.service.DataValidator;
+import org.thingsboard.server.dao.service.PaginatedRemover;
+import org.thingsboard.server.dao.tenant.TenantDao;
+
+import javax.annotation.Nullable;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+import java.util.Optional;
+import java.util.concurrent.ExecutionException;
+import java.util.stream.Collectors;
+
+import static org.thingsboard.server.dao.DaoUtil.*;
+import static org.thingsboard.server.dao.model.ModelConstants.NULL_UUID;
+import static org.thingsboard.server.dao.service.Validator.*;
+
+@Service
+@Slf4j
+public class BaseAlarmService extends BaseEntityService implements AlarmService {
+
+    private static final String ALARM_RELATION_PREFIX = "ALARM_";
+    private static final String ALARM_RELATION = "ALARM_ANY";
+
+    @Autowired
+    private AlarmDao alarmDao;
+
+    @Autowired
+    private TenantDao tenantDao;
+
+    @Autowired
+    private RelationService relationService;
+
+    @Override
+    public Alarm createOrUpdateAlarm(Alarm alarm) {
+        alarmDataValidator.validate(alarm);
+        try {
+            if (alarm.getStartTs() == 0L) {
+                alarm.setStartTs(System.currentTimeMillis());
+            }
+            Alarm existing = alarmDao.findLatestByOriginatorAndType(alarm.getTenantId(), alarm.getOriginator(), alarm.getType()).get();
+            if (existing == null || existing.getStatus().isCleared()) {
+                log.debug("New Alarm : {}", alarm);
+                Alarm saved = getData(alarmDao.save(new AlarmEntity(alarm)));
+                EntityRelationsQuery query = new EntityRelationsQuery();
+                query.setParameters(new RelationsSearchParameters(saved.getOriginator(), EntitySearchDirection.TO, Integer.MAX_VALUE));
+                List<EntityId> parentEntities = relationService.findByQuery(query).get().stream().map(r -> r.getFrom()).collect(Collectors.toList());
+                for (EntityId parentId : parentEntities) {
+                    createRelation(new EntityRelation(parentId, saved.getId(), ALARM_RELATION));
+                    createRelation(new EntityRelation(parentId, saved.getId(), ALARM_RELATION_PREFIX + saved.getStatus().name()));
+                }
+                return saved;
+            } else {
+                log.debug("Alarm before merge: {}", alarm);
+                alarm = merge(existing, alarm);
+                log.debug("Alarm after merge: {}", alarm);
+                return getData(alarmDao.save(new AlarmEntity(alarm)));
+            }
+        } catch (ExecutionException | InterruptedException e) {
+            throw new RuntimeException(e);
+        }
+    }
+
+    @Override
+    public ListenableFuture<Boolean> updateAlarm(Alarm update) {
+        alarmDataValidator.validate(update);
+        return getAndUpdate(update.getId(), new Function<AlarmEntity, Boolean>() {
+            @Nullable
+            @Override
+            public Boolean apply(@Nullable AlarmEntity entity) {
+                Alarm alarm = getData(entity);
+                if (alarm == null) {
+                    return false;
+                } else {
+                    AlarmStatus oldStatus = alarm.getStatus();
+                    AlarmStatus newStatus = update.getStatus();
+                    alarmDao.save(new AlarmEntity(merge(alarm, update)));
+                    if (oldStatus != newStatus) {
+                        updateRelations(alarm, oldStatus, newStatus);
+                    }
+                    return true;
+                }
+            }
+        });
+    }
+
+    @Override
+    public ListenableFuture<Boolean> ackAlarm(AlarmId alarmId, long ackTime) {
+        return getAndUpdate(alarmId, new Function<AlarmEntity, Boolean>() {
+            @Nullable
+            @Override
+            public Boolean apply(@Nullable AlarmEntity entity) {
+                Alarm alarm = getData(entity);
+                if (alarm == null || alarm.getStatus().isAck()) {
+                    return false;
+                } else {
+                    AlarmStatus oldStatus = alarm.getStatus();
+                    AlarmStatus newStatus = oldStatus.isCleared() ? AlarmStatus.CLEARED_ACK : AlarmStatus.ACTIVE_ACK;
+                    alarm.setStatus(newStatus);
+                    alarm.setAckTs(ackTime);
+                    alarmDao.save(new AlarmEntity(alarm));
+                    updateRelations(alarm, oldStatus, newStatus);
+                    return true;
+                }
+            }
+        });
+    }
+
+    @Override
+    public ListenableFuture<Boolean> clearAlarm(AlarmId alarmId, long clearTime) {
+        return getAndUpdate(alarmId, new Function<AlarmEntity, Boolean>() {
+            @Nullable
+            @Override
+            public Boolean apply(@Nullable AlarmEntity entity) {
+                Alarm alarm = getData(entity);
+                if (alarm == null || alarm.getStatus().isCleared()) {
+                    return false;
+                } else {
+                    AlarmStatus oldStatus = alarm.getStatus();
+                    AlarmStatus newStatus = oldStatus.isAck() ? AlarmStatus.CLEARED_ACK : AlarmStatus.CLEARED_UNACK;
+                    alarm.setStatus(newStatus);
+                    alarm.setClearTs(clearTime);
+                    alarmDao.save(new AlarmEntity(alarm));
+                    updateRelations(alarm, oldStatus, newStatus);
+                    return true;
+                }
+            }
+        });
+    }
+
+    @Override
+    public ListenableFuture<TimePageData<Alarm>> findAlarms(AlarmQuery query) {
+        return null;
+    }
+
+    private void deleteRelation(EntityRelation alarmRelation) throws ExecutionException, InterruptedException {
+        log.debug("Deleting Alarm relation: {}", alarmRelation);
+        relationService.deleteRelation(alarmRelation).get();
+    }
+
+    private void createRelation(EntityRelation alarmRelation) throws ExecutionException, InterruptedException {
+        log.debug("Creating Alarm relation: {}", alarmRelation);
+        relationService.saveRelation(alarmRelation).get();
+    }
+
+    private Alarm merge(Alarm existing, Alarm alarm) {
+        if (alarm.getStartTs() > existing.getEndTs()) {
+            existing.setEndTs(alarm.getStartTs());
+        }
+        if (alarm.getEndTs() > existing.getEndTs()) {
+            existing.setEndTs(alarm.getEndTs());
+        }
+        if (alarm.getClearTs() > existing.getClearTs()) {
+            existing.setClearTs(alarm.getClearTs());
+        }
+        if (alarm.getAckTs() > existing.getAckTs()) {
+            existing.setAckTs(alarm.getAckTs());
+        }
+        existing.setStatus(alarm.getStatus());
+        existing.setSeverity(alarm.getSeverity());
+        existing.setDetails(alarm.getDetails());
+        return existing;
+    }
+
+    private void updateRelations(Alarm alarm, AlarmStatus oldStatus, AlarmStatus newStatus) {
+        try {
+            EntityRelationsQuery query = new EntityRelationsQuery();
+            query.setParameters(new RelationsSearchParameters(alarm.getOriginator(), EntitySearchDirection.TO, Integer.MAX_VALUE));
+            List<EntityId> parentEntities = relationService.findByQuery(query).get().stream().map(r -> r.getFrom()).collect(Collectors.toList());
+            for (EntityId parentId : parentEntities) {
+                deleteRelation(new EntityRelation(parentId, alarm.getId(), ALARM_RELATION_PREFIX + oldStatus.name()));
+                createRelation(new EntityRelation(parentId, alarm.getId(), ALARM_RELATION_PREFIX + newStatus.name()));
+            }
+        } catch (ExecutionException | InterruptedException e) {
+            log.warn("[{}] Failed to update relations. Old status: [{}], New status: [{}]", alarm.getId(), oldStatus, newStatus);
+            throw new RuntimeException(e);
+        }
+    }
+
+    private ListenableFuture<Boolean> getAndUpdate(AlarmId alarmId, Function<AlarmEntity, Boolean> function) {
+        validateId(alarmId, "Alarm id should be specified!");
+        ListenableFuture<AlarmEntity> entity = alarmDao.findByIdAsync(alarmId.getId());
+        return Futures.transform(entity, function);
+    }
+
+    private DataValidator<Alarm> alarmDataValidator =
+            new DataValidator<Alarm>() {
+
+                @Override
+                protected void validateDataImpl(Alarm alarm) {
+                    if (StringUtils.isEmpty(alarm.getType())) {
+                        throw new DataValidationException("Alarm type should be specified!");
+                    }
+                    if (alarm.getOriginator() == null) {
+                        throw new DataValidationException("Alarm originator should be specified!");
+                    }
+                    if (alarm.getSeverity() == null) {
+                        throw new DataValidationException("Alarm severity should be specified!");
+                    }
+                    if (alarm.getStatus() == null) {
+                        throw new DataValidationException("Alarm status should be specified!");
+                    }
+                    if (alarm.getTenantId() == null) {
+                        throw new DataValidationException("Alarm should be assigned to tenant!");
+                    } else {
+                        TenantEntity tenant = tenantDao.findById(alarm.getTenantId().getId());
+                        if (tenant == null) {
+                            throw new DataValidationException("Alarm is referencing to non-existent tenant!");
+                        }
+                    }
+                }
+            };
+}

dao/src/main/java/org/thingsboard/server/dao/asset/AssetDao.java

@@ -0,0 +1,90 @@
+/**
+ * Copyright © 2016-2017 The Thingsboard Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.thingsboard.server.dao.asset;
+
+import com.google.common.util.concurrent.ListenableFuture;
+import org.thingsboard.server.common.data.Device;
+import org.thingsboard.server.common.data.asset.Asset;
+import org.thingsboard.server.common.data.page.TextPageLink;
+import org.thingsboard.server.dao.Dao;
+import org.thingsboard.server.dao.model.AssetEntity;
+import org.thingsboard.server.dao.model.DeviceEntity;
+
+import java.util.List;
+import java.util.Optional;
+import java.util.UUID;
+
+/**
+ * The Interface AssetDao.
+ *
+ */
+public interface AssetDao extends Dao<AssetEntity> {
+
+    /**
+     * Save or update asset object
+     *
+     * @param asset the asset object
+     * @return saved asset object
+     */
+    AssetEntity save(Asset asset);
+
+    /**
+     * Find assets by tenantId and page link.
+     *
+     * @param tenantId the tenantId
+     * @param pageLink the page link
+     * @return the list of asset objects
+     */
+    List<AssetEntity> findAssetsByTenantId(UUID tenantId, TextPageLink pageLink);
+
+    /**
+     * Find assets by tenantId and assets Ids.
+     *
+     * @param tenantId the tenantId
+     * @param assetIds the asset Ids
+     * @return the list of asset objects
+     */
+    ListenableFuture<List<AssetEntity>> findAssetsByTenantIdAndIdsAsync(UUID tenantId, List<UUID> assetIds);
+
+    /**
+     * Find assets by tenantId, customerId and page link.
+     *
+     * @param tenantId the tenantId
+     * @param customerId the customerId
+     * @param pageLink the page link
+     * @return the list of asset objects
+     */
+    List<AssetEntity> findAssetsByTenantIdAndCustomerId(UUID tenantId, UUID customerId, TextPageLink pageLink);
+
+    /**
+     * Find assets by tenantId, customerId and assets Ids.
+     *
+     * @param tenantId the tenantId
+     * @param customerId the customerId
+     * @param assetIds the asset Ids
+     * @return the list of asset objects
+     */
+    ListenableFuture<List<AssetEntity>> findAssetsByTenantIdCustomerIdAndIdsAsync(UUID tenantId, UUID customerId, List<UUID> assetIds);
+
+    /**
+     * Find assets by tenantId and asset name.
+     *
+     * @param tenantId the tenantId
+     * @param name the asset name
+     * @return the optional asset object
+     */
+    Optional<AssetEntity> findAssetsByTenantIdAndName(UUID tenantId, String name);
+}

dao/src/main/java/org/thingsboard/server/dao/asset/AssetDaoImpl.java

@@ -0,0 +1,104 @@
+/**
+ * Copyright © 2016-2017 The Thingsboard Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.thingsboard.server.dao.asset;
+
+import com.datastax.driver.core.querybuilder.Select;
+import com.google.common.util.concurrent.ListenableFuture;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.stereotype.Component;
+import org.thingsboard.server.common.data.asset.Asset;
+import org.thingsboard.server.common.data.page.TextPageLink;
+import org.thingsboard.server.dao.AbstractSearchTextDao;
+import org.thingsboard.server.dao.model.AssetEntity;
+
+import java.util.*;
+
+import static com.datastax.driver.core.querybuilder.QueryBuilder.*;
+import static org.thingsboard.server.dao.model.ModelConstants.*;
+
+@Component
+@Slf4j
+public class AssetDaoImpl extends AbstractSearchTextDao<AssetEntity> implements AssetDao {
+
+    @Override
+    protected Class<AssetEntity> getColumnFamilyClass() {
+        return AssetEntity.class;
+    }
+
+    @Override
+    protected String getColumnFamilyName() {
+        return ASSET_COLUMN_FAMILY_NAME;
+    }
+
+    @Override
+    public AssetEntity save(Asset asset) {
+        log.debug("Save asset [{}] ", asset);
+        return save(new AssetEntity(asset));
+    }
+
+    @Override
+    public List<AssetEntity> findAssetsByTenantId(UUID tenantId, TextPageLink pageLink) {
+        log.debug("Try to find assets by tenantId [{}] and pageLink [{}]", tenantId, pageLink);
+        List<AssetEntity> assetEntities = findPageWithTextSearch(ASSET_BY_TENANT_AND_SEARCH_TEXT_COLUMN_FAMILY_NAME,
+                Collections.singletonList(eq(ASSET_TENANT_ID_PROPERTY, tenantId)), pageLink);
+
+        log.trace("Found assets [{}] by tenantId [{}] and pageLink [{}]", assetEntities, tenantId, pageLink);
+        return assetEntities;
+    }
+
+    @Override
+    public ListenableFuture<List<AssetEntity>> findAssetsByTenantIdAndIdsAsync(UUID tenantId, List<UUID> assetIds) {
+        log.debug("Try to find assets by tenantId [{}] and asset Ids [{}]", tenantId, assetIds);
+        Select select = select().from(getColumnFamilyName());
+        Select.Where query = select.where();
+        query.and(eq(ASSET_TENANT_ID_PROPERTY, tenantId));
+        query.and(in(ID_PROPERTY, assetIds));
+        return findListByStatementAsync(query);
+    }
+
+    @Override
+    public List<AssetEntity> findAssetsByTenantIdAndCustomerId(UUID tenantId, UUID customerId, TextPageLink pageLink) {
+        log.debug("Try to find assets by tenantId [{}], customerId[{}] and pageLink [{}]", tenantId, customerId, pageLink);
+        List<AssetEntity> assetEntities = findPageWithTextSearch(ASSET_BY_CUSTOMER_AND_SEARCH_TEXT_COLUMN_FAMILY_NAME,
+                Arrays.asList(eq(ASSET_CUSTOMER_ID_PROPERTY, customerId),
+                        eq(ASSET_TENANT_ID_PROPERTY, tenantId)),
+                pageLink);
+
+        log.trace("Found assets [{}] by tenantId [{}], customerId [{}] and pageLink [{}]", assetEntities, tenantId, customerId, pageLink);
+        return assetEntities;
+    }
+
+    @Override
+    public ListenableFuture<List<AssetEntity>> findAssetsByTenantIdCustomerIdAndIdsAsync(UUID tenantId, UUID customerId, List<UUID> assetIds) {
+        log.debug("Try to find assets by tenantId [{}], customerId [{}] and asset Ids [{}]", tenantId, customerId, assetIds);
+        Select select = select().from(getColumnFamilyName());
+        Select.Where query = select.where();
+        query.and(eq(ASSET_TENANT_ID_PROPERTY, tenantId));
+        query.and(eq(ASSET_CUSTOMER_ID_PROPERTY, customerId));
+        query.and(in(ID_PROPERTY, assetIds));
+        return findListByStatementAsync(query);
+    }
+
+    @Override
+    public Optional<AssetEntity> findAssetsByTenantIdAndName(UUID tenantId, String assetName) {
+        Select select = select().from(ASSET_BY_TENANT_AND_NAME_VIEW_NAME);
+        Select.Where query = select.where();
+        query.and(eq(ASSET_TENANT_ID_PROPERTY, tenantId));
+        query.and(eq(ASSET_NAME_PROPERTY, assetName));
+        return Optional.ofNullable(findOneByStatement(query));
+    }
+
+}

dao/src/main/java/org/thingsboard/server/dao/asset/AssetSearchQuery.java

@@ -0,0 +1,50 @@
+/**
+ * Copyright © 2016-2017 The Thingsboard Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.thingsboard.server.dao.asset;
+
+import lombok.Data;
+import org.thingsboard.server.common.data.EntityType;
+import org.thingsboard.server.common.data.relation.EntityRelation;
+import org.thingsboard.server.dao.relation.RelationsSearchParameters;
+import org.thingsboard.server.dao.relation.EntityRelationsQuery;
+import org.thingsboard.server.dao.relation.EntityTypeFilter;
+
+import javax.annotation.Nullable;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+
+/**
+ * Created by ashvayka on 03.05.17.
+ */
+@Data
+public class AssetSearchQuery {
+
+    private RelationsSearchParameters parameters;
+    @Nullable
+    private String relationType;
+    @Nullable
+    private List<String> assetTypes;
+
+    public EntityRelationsQuery toEntitySearchQuery() {
+        EntityRelationsQuery query = new EntityRelationsQuery();
+        query.setParameters(parameters);
+        query.setFilters(
+                Collections.singletonList(new EntityTypeFilter(relationType == null ? EntityRelation.CONTAINS_TYPE : relationType,
+                        Collections.singletonList(EntityType.ASSET))));
+        return query;
+    }
+}

dao/src/main/java/org/thingsboard/server/dao/asset/AssetService.java

@@ -0,0 +1,59 @@
+/**
+ * Copyright © 2016-2017 The Thingsboard Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.thingsboard.server.dao.asset;
+
+import com.google.common.util.concurrent.ListenableFuture;
+import org.thingsboard.server.common.data.asset.Asset;
+import org.thingsboard.server.common.data.id.AssetId;
+import org.thingsboard.server.common.data.id.CustomerId;
+import org.thingsboard.server.common.data.id.TenantId;
+import org.thingsboard.server.common.data.page.TextPageData;
+import org.thingsboard.server.common.data.page.TextPageLink;
+
+import java.util.List;
+import java.util.Optional;
+
+public interface AssetService {
+
+    Asset findAssetById(AssetId assetId);
+
+    ListenableFuture<Asset> findAssetByIdAsync(AssetId assetId);
+
+    Optional<Asset> findAssetByTenantIdAndName(TenantId tenantId, String name);
+
+    Asset saveAsset(Asset device);
+
+    Asset assignAssetToCustomer(AssetId assetId, CustomerId customerId);
+
+    Asset unassignAssetFromCustomer(AssetId assetId);
+
+    void deleteAsset(AssetId assetId);
+
+    TextPageData<Asset> findAssetsByTenantId(TenantId tenantId, TextPageLink pageLink);
+
+    ListenableFuture<List<Asset>> findAssetsByTenantIdAndIdsAsync(TenantId tenantId, List<AssetId> assetIds);
+
+    void deleteAssetsByTenantId(TenantId tenantId);
+
+    TextPageData<Asset> findAssetsByTenantIdAndCustomerId(TenantId tenantId, CustomerId customerId, TextPageLink pageLink);
+
+    ListenableFuture<List<Asset>> findAssetsByTenantIdCustomerIdAndIdsAsync(TenantId tenantId, CustomerId customerId, List<AssetId> assetIds);
+
+    void unassignCustomerAssets(TenantId tenantId, CustomerId customerId);
+
+    ListenableFuture<List<Asset>> findAssetsByQuery(AssetSearchQuery query);
+
+}

dao/src/main/java/org/thingsboard/server/dao/asset/AssetTypeFilter.java

@@ -0,0 +1,32 @@
+/**
+ * Copyright © 2016-2017 The Thingsboard Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.thingsboard.server.dao.asset;
+
+import lombok.Data;
+
+import javax.annotation.Nullable;
+import java.util.List;
+
+/**
+ * Created by ashvayka on 02.05.17.
+ */
+@Data
+public class AssetTypeFilter {
+    @Nullable
+    private String relationType;
+    @Nullable
+    private List<String> assetTypes;
+}

dao/src/main/java/org/thingsboard/server/dao/asset/BaseAssetService.java

@@ -0,0 +1,292 @@
+/**
+ * Copyright © 2016-2017 The Thingsboard Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.thingsboard.server.dao.asset;
+
+
+import com.google.common.base.Function;
+import com.google.common.util.concurrent.AsyncFunction;
+import com.google.common.util.concurrent.Futures;
+import com.google.common.util.concurrent.ListenableFuture;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+import org.springframework.util.StringUtils;
+import org.thingsboard.server.common.data.EntityType;
+import org.thingsboard.server.common.data.asset.Asset;
+import org.thingsboard.server.common.data.id.AssetId;
+import org.thingsboard.server.common.data.id.CustomerId;
+import org.thingsboard.server.common.data.id.EntityId;
+import org.thingsboard.server.common.data.id.TenantId;
+import org.thingsboard.server.common.data.page.TextPageData;
+import org.thingsboard.server.common.data.page.TextPageLink;
+import org.thingsboard.server.common.data.relation.EntityRelation;
+import org.thingsboard.server.dao.customer.CustomerDao;
+import org.thingsboard.server.dao.entity.BaseEntityService;
+import org.thingsboard.server.dao.exception.DataValidationException;
+import org.thingsboard.server.dao.model.AssetEntity;
+import org.thingsboard.server.dao.model.CustomerEntity;
+import org.thingsboard.server.dao.model.TenantEntity;
+import org.thingsboard.server.dao.relation.EntityRelationsQuery;
+import org.thingsboard.server.dao.relation.EntitySearchDirection;
+import org.thingsboard.server.dao.service.DataValidator;
+import org.thingsboard.server.dao.service.PaginatedRemover;
+import org.thingsboard.server.dao.tenant.TenantDao;
+
+import javax.annotation.Nullable;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Optional;
+import java.util.stream.Collectors;
+
+import static org.thingsboard.server.dao.DaoUtil.*;
+import static org.thingsboard.server.dao.model.ModelConstants.NULL_UUID;
+import static org.thingsboard.server.dao.service.Validator.*;
+
+@Service
+@Slf4j
+public class BaseAssetService extends BaseEntityService implements AssetService {
+
+    @Autowired
+    private AssetDao assetDao;
+
+    @Autowired
+    private TenantDao tenantDao;
+
+    @Autowired
+    private CustomerDao customerDao;
+
+    @Override
+    public Asset findAssetById(AssetId assetId) {
+        log.trace("Executing findAssetById [{}]", assetId);
+        validateId(assetId, "Incorrect assetId " + assetId);
+        AssetEntity assetEntity = assetDao.findById(assetId.getId());
+        return getData(assetEntity);
+    }
+
+    @Override
+    public ListenableFuture<Asset> findAssetByIdAsync(AssetId assetId) {
+        log.trace("Executing findAssetById [{}]", assetId);
+        validateId(assetId, "Incorrect assetId " + assetId);
+        ListenableFuture<AssetEntity> assetEntity = assetDao.findByIdAsync(assetId.getId());
+        return Futures.transform(assetEntity, (Function<? super AssetEntity, ? extends Asset>) input -> getData(input));
+    }
+
+    @Override
+    public Optional<Asset> findAssetByTenantIdAndName(TenantId tenantId, String name) {
+        log.trace("Executing findAssetByTenantIdAndName [{}][{}]", tenantId, name);
+        validateId(tenantId, "Incorrect tenantId " + tenantId);
+        Optional<AssetEntity> assetEntityOpt = assetDao.findAssetsByTenantIdAndName(tenantId.getId(), name);
+        if (assetEntityOpt.isPresent()) {
+            return Optional.of(getData(assetEntityOpt.get()));
+        } else {
+            return Optional.empty();
+        }
+    }
+
+    @Override
+    public Asset saveAsset(Asset asset) {
+        log.trace("Executing saveAsset [{}]", asset);
+        assetValidator.validate(asset);
+        return getData(assetDao.save(asset));
+    }
+
+    @Override
+    public Asset assignAssetToCustomer(AssetId assetId, CustomerId customerId) {
+        Asset asset = findAssetById(assetId);
+        asset.setCustomerId(customerId);
+        return saveAsset(asset);
+    }
+
+    @Override
+    public Asset unassignAssetFromCustomer(AssetId assetId) {
+        Asset asset = findAssetById(assetId);
+        asset.setCustomerId(null);
+        return saveAsset(asset);
+    }
+
+    @Override
+    public void deleteAsset(AssetId assetId) {
+        log.trace("Executing deleteAsset [{}]", assetId);
+        validateId(assetId, "Incorrect assetId " + assetId);
+        deleteEntityRelations(assetId);
+        assetDao.removeById(assetId.getId());
+    }
+
+    @Override
+    public TextPageData<Asset> findAssetsByTenantId(TenantId tenantId, TextPageLink pageLink) {
+        log.trace("Executing findAssetsByTenantId, tenantId [{}], pageLink [{}]", tenantId, pageLink);
+        validateId(tenantId, "Incorrect tenantId " + tenantId);
+        validatePageLink(pageLink, "Incorrect page link " + pageLink);
+        List<AssetEntity> assetEntities = assetDao.findAssetsByTenantId(tenantId.getId(), pageLink);
+        List<Asset> assets = convertDataList(assetEntities);
+        return new TextPageData<Asset>(assets, pageLink);
+    }
+
+    @Override
+    public ListenableFuture<List<Asset>> findAssetsByTenantIdAndIdsAsync(TenantId tenantId, List<AssetId> assetIds) {
+        log.trace("Executing findAssetsByTenantIdAndIdsAsync, tenantId [{}], assetIds [{}]", tenantId, assetIds);
+        validateId(tenantId, "Incorrect tenantId " + tenantId);
+        validateIds(assetIds, "Incorrect assetIds " + assetIds);
+        ListenableFuture<List<AssetEntity>> assetEntities = assetDao.findAssetsByTenantIdAndIdsAsync(tenantId.getId(), toUUIDs(assetIds));
+        return Futures.transform(assetEntities, (Function<List<AssetEntity>, List<Asset>>) input -> convertDataList(input));
+    }
+
+    @Override
+    public void deleteAssetsByTenantId(TenantId tenantId) {
+        log.trace("Executing deleteAssetsByTenantId, tenantId [{}]", tenantId);
+        validateId(tenantId, "Incorrect tenantId " + tenantId);
+        tenantAssetsRemover.removeEntitites(tenantId);
+    }
+
+    @Override
+    public TextPageData<Asset> findAssetsByTenantIdAndCustomerId(TenantId tenantId, CustomerId customerId, TextPageLink pageLink) {
+        log.trace("Executing findAssetsByTenantIdAndCustomerId, tenantId [{}], customerId [{}], pageLink [{}]", tenantId, customerId, pageLink);
+        validateId(tenantId, "Incorrect tenantId " + tenantId);
+        validateId(customerId, "Incorrect customerId " + customerId);
+        validatePageLink(pageLink, "Incorrect page link " + pageLink);
+        List<AssetEntity> assetEntities = assetDao.findAssetsByTenantIdAndCustomerId(tenantId.getId(), customerId.getId(), pageLink);
+        List<Asset> assets = convertDataList(assetEntities);
+        return new TextPageData<Asset>(assets, pageLink);
+    }
+
+    @Override
+    public ListenableFuture<List<Asset>> findAssetsByTenantIdCustomerIdAndIdsAsync(TenantId tenantId, CustomerId customerId, List<AssetId> assetIds) {
+        log.trace("Executing findAssetsByTenantIdCustomerIdAndIdsAsync, tenantId [{}], customerId [{}], assetIds [{}]", tenantId, customerId, assetIds);
+        validateId(tenantId, "Incorrect tenantId " + tenantId);
+        validateId(customerId, "Incorrect customerId " + customerId);
+        validateIds(assetIds, "Incorrect assetIds " + assetIds);
+        ListenableFuture<List<AssetEntity>> assetEntities = assetDao.findAssetsByTenantIdCustomerIdAndIdsAsync(tenantId.getId(),
+                customerId.getId(), toUUIDs(assetIds));
+        return Futures.transform(assetEntities, (Function<List<AssetEntity>, List<Asset>>) input -> convertDataList(input));
+    }
+
+    @Override
+    public void unassignCustomerAssets(TenantId tenantId, CustomerId customerId) {
+        log.trace("Executing unassignCustomerAssets, tenantId [{}], customerId [{}]", tenantId, customerId);
+        validateId(tenantId, "Incorrect tenantId " + tenantId);
+        validateId(customerId, "Incorrect customerId " + customerId);
+        new CustomerAssetsUnassigner(tenantId).removeEntitites(customerId);
+    }
+
+    @Override
+    public ListenableFuture<List<Asset>> findAssetsByQuery(AssetSearchQuery query) {
+        ListenableFuture<List<EntityRelation>> relations = relationService.findByQuery(query.toEntitySearchQuery());
+        ListenableFuture<List<Asset>> assets = Futures.transform(relations, (AsyncFunction<List<EntityRelation>, List<Asset>>) relations1 -> {
+            EntitySearchDirection direction = query.toEntitySearchQuery().getParameters().getDirection();
+            List<ListenableFuture<Asset>> futures = new ArrayList<>();
+            for (EntityRelation relation : relations1) {
+                EntityId entityId = direction == EntitySearchDirection.FROM ? relation.getTo() : relation.getFrom();
+                if (entityId.getEntityType() == EntityType.ASSET) {
+                    futures.add(findAssetByIdAsync(new AssetId(entityId.getId())));
+                }
+            }
+            return Futures.successfulAsList(futures);
+        });
+
+        assets = Futures.transform(assets, new Function<List<Asset>, List<Asset>>() {
+            @Nullable
+            @Override
+            public List<Asset> apply(@Nullable List<Asset> assetList) {
+                return assetList.stream().filter(asset -> query.getAssetTypes().contains(asset.getType())).collect(Collectors.toList());
+            }
+        });
+
+        return assets;
+    }
+
+    private DataValidator<Asset> assetValidator =
+            new DataValidator<Asset>() {
+
+                @Override
+                protected void validateCreate(Asset asset) {
+                    assetDao.findAssetsByTenantIdAndName(asset.getTenantId().getId(), asset.getName()).ifPresent(
+                            d -> {
+                                throw new DataValidationException("Asset with such name already exists!");
+                            }
+                    );
+                }
+
+                @Override
+                protected void validateUpdate(Asset asset) {
+                    assetDao.findAssetsByTenantIdAndName(asset.getTenantId().getId(), asset.getName()).ifPresent(
+                            d -> {
+                                if (!d.getId().equals(asset.getUuidId())) {
+                                    throw new DataValidationException("Asset with such name already exists!");
+                                }
+                            }
+                    );
+                }
+
+                @Override
+                protected void validateDataImpl(Asset asset) {
+                    if (StringUtils.isEmpty(asset.getName())) {
+                        throw new DataValidationException("Asset name should be specified!");
+                    }
+                    if (asset.getTenantId() == null) {
+                        throw new DataValidationException("Asset should be assigned to tenant!");
+                    } else {
+                        TenantEntity tenant = tenantDao.findById(asset.getTenantId().getId());
+                        if (tenant == null) {
+                            throw new DataValidationException("Asset is referencing to non-existent tenant!");
+                        }
+                    }
+                    if (asset.getCustomerId() == null) {
+                        asset.setCustomerId(new CustomerId(NULL_UUID));
+                    } else if (!asset.getCustomerId().getId().equals(NULL_UUID)) {
+                        CustomerEntity customer = customerDao.findById(asset.getCustomerId().getId());
+                        if (customer == null) {
+                            throw new DataValidationException("Can't assign asset to non-existent customer!");
+                        }
+                        if (!customer.getTenantId().equals(asset.getTenantId().getId())) {
+                            throw new DataValidationException("Can't assign asset to customer from different tenant!");
+                        }
+                    }
+                }
+            };
+
+    private PaginatedRemover<TenantId, AssetEntity> tenantAssetsRemover =
+            new PaginatedRemover<TenantId, AssetEntity>() {
+
+                @Override
+                protected List<AssetEntity> findEntities(TenantId id, TextPageLink pageLink) {
+                    return assetDao.findAssetsByTenantId(id.getId(), pageLink);
+                }
+
+                @Override
+                protected void removeEntity(AssetEntity entity) {
+                    deleteAsset(new AssetId(entity.getId()));
+                }
+            };
+
+    class CustomerAssetsUnassigner extends PaginatedRemover<CustomerId, AssetEntity> {
+
+        private TenantId tenantId;
+
+        CustomerAssetsUnassigner(TenantId tenantId) {
+            this.tenantId = tenantId;
+        }
+
+        @Override
+        protected List<AssetEntity> findEntities(CustomerId id, TextPageLink pageLink) {
+            return assetDao.findAssetsByTenantIdAndCustomerId(tenantId.getId(), id.getId(), pageLink);
+        }
+
+        @Override
+        protected void removeEntity(AssetEntity entity) {
+            unassignAssetFromCustomer(new AssetId(entity.getId()));
+        }
+    }
+}

dao/src/main/java/org/thingsboard/server/dao/customer/CustomerService.java

@@ -15,6 +15,7 @@
  */
 package org.thingsboard.server.dao.customer;
 
+import com.google.common.util.concurrent.ListenableFuture;
 import org.thingsboard.server.common.data.Customer;
 import org.thingsboard.server.common.data.id.CustomerId;
 import org.thingsboard.server.common.data.id.TenantId;
@@ -23,16 +24,18 @@ import org.thingsboard.server.common.data.page.TextPageLink;
 
 public interface CustomerService {
 
-    public Customer findCustomerById(CustomerId customerId);
+    Customer findCustomerById(CustomerId customerId);
+
+    ListenableFuture<Customer> findCustomerByIdAsync(CustomerId customerId);
     
-    public Customer saveCustomer(Customer customer);
+    Customer saveCustomer(Customer customer);
     
-    public void deleteCustomer(CustomerId customerId);
+    void deleteCustomer(CustomerId customerId);
 
-    public Customer findOrCreatePublicCustomer(TenantId tenantId);
-    
-    public TextPageData<Customer> findCustomersByTenantId(TenantId tenantId, TextPageLink pageLink);
+    Customer findOrCreatePublicCustomer(TenantId tenantId);
     
-    public void deleteCustomersByTenantId(TenantId tenantId);
+    TextPageData<Customer> findCustomersByTenantId(TenantId tenantId, TextPageLink pageLink);
     
+    void deleteCustomersByTenantId(TenantId tenantId);
+
 }

dao/src/main/java/org/thingsboard/server/dao/customer/CustomerServiceImpl.java

@@ -17,6 +17,7 @@ package org.thingsboard.server.dao.customer;
 
 import static org.thingsboard.server.dao.DaoUtil.convertDataList;
 import static org.thingsboard.server.dao.DaoUtil.getData;
+import static org.thingsboard.server.dao.service.Validator.validateId;
 
 import java.io.IOException;
 import java.util.List;
@@ -24,31 +25,35 @@ import java.util.Optional;
 
 import com.fasterxml.jackson.databind.JsonNode;
 import com.fasterxml.jackson.databind.ObjectMapper;
+import com.google.common.base.Function;
+import com.google.common.util.concurrent.Futures;
+import com.google.common.util.concurrent.ListenableFuture;
 import lombok.extern.slf4j.Slf4j;
 import org.apache.commons.lang3.StringUtils;
 import org.thingsboard.server.common.data.Customer;
+import org.thingsboard.server.common.data.asset.Asset;
 import org.thingsboard.server.common.data.id.CustomerId;
 import org.thingsboard.server.common.data.id.TenantId;
 import org.thingsboard.server.common.data.page.TextPageData;
 import org.thingsboard.server.common.data.page.TextPageLink;
 import org.thingsboard.server.dao.dashboard.DashboardService;
 import org.thingsboard.server.dao.device.DeviceService;
+import org.thingsboard.server.dao.entity.BaseEntityService;
 import org.thingsboard.server.dao.exception.DataValidationException;
 import org.thingsboard.server.dao.exception.IncorrectParameterException;
+import org.thingsboard.server.dao.model.AssetEntity;
 import org.thingsboard.server.dao.model.CustomerEntity;
 import org.thingsboard.server.dao.model.TenantEntity;
 import org.thingsboard.server.dao.service.DataValidator;
 import org.thingsboard.server.dao.service.PaginatedRemover;
 import org.thingsboard.server.dao.tenant.TenantDao;
 import org.thingsboard.server.dao.user.UserService;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Service;
 import org.thingsboard.server.dao.service.Validator;
 @Service
 @Slf4j
-public class CustomerServiceImpl implements CustomerService {
+public class CustomerServiceImpl extends BaseEntityService implements CustomerService {
 
     private static final String PUBLIC_CUSTOMER_TITLE = "Public";
 
@@ -75,6 +80,14 @@ public class CustomerServiceImpl implements CustomerService {
         return getData(customerEntity);
     }
 
+    @Override
+    public ListenableFuture<Customer> findCustomerByIdAsync(CustomerId customerId) {
+        log.trace("Executing findCustomerByIdAsync [{}]", customerId);
+        validateId(customerId, "Incorrect customerId " + customerId);
+        ListenableFuture<CustomerEntity> customerEntity = customerDao.findByIdAsync(customerId.getId());
+        return Futures.transform(customerEntity, (Function<? super CustomerEntity, ? extends Customer>) input -> getData(input));
+    }
+
     @Override
     public Customer saveCustomer(Customer customer) {
         log.trace("Executing saveCustomer [{}]", customer);
@@ -93,7 +106,8 @@ public class CustomerServiceImpl implements CustomerService {
         }
         dashboardService.unassignCustomerDashboards(customer.getTenantId(), customerId);
         deviceService.unassignCustomerDevices(customer.getTenantId(), customerId);
-        userService.deleteCustomerUsers(customer.getTenantId(), customerId);               
+        userService.deleteCustomerUsers(customer.getTenantId(), customerId);
+        deleteEntityRelations(customerId);
         customerDao.removeById(customerId.getId());
     }
 

dao/src/main/java/org/thingsboard/server/dao/dashboard/DashboardServiceImpl.java

@@ -30,20 +30,19 @@ import org.thingsboard.server.common.data.id.TenantId;
 import org.thingsboard.server.common.data.page.TextPageData;
 import org.thingsboard.server.common.data.page.TextPageLink;
 import org.thingsboard.server.dao.customer.CustomerDao;
+import org.thingsboard.server.dao.entity.BaseEntityService;
 import org.thingsboard.server.dao.exception.DataValidationException;
 import org.thingsboard.server.dao.model.*;
 import org.thingsboard.server.dao.service.DataValidator;
 import org.thingsboard.server.dao.service.PaginatedRemover;
 import org.thingsboard.server.dao.tenant.TenantDao;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Service;
 import org.thingsboard.server.dao.service.Validator;
 
 @Service
 @Slf4j
-public class DashboardServiceImpl implements DashboardService {
+public class DashboardServiceImpl extends BaseEntityService implements DashboardService {
 
     @Autowired
     private DashboardDao dashboardDao;
@@ -91,6 +90,7 @@ public class DashboardServiceImpl implements DashboardService {
     public void deleteDashboard(DashboardId dashboardId) {
         log.trace("Executing deleteDashboard [{}]", dashboardId);
         Validator.validateId(dashboardId, "Incorrect dashboardId " + dashboardId);
+        deleteEntityRelations(dashboardId);
         dashboardDao.removeById(dashboardId.getId());
     }
 

dao/src/main/java/org/thingsboard/server/dao/device/DeviceServiceImpl.java

@@ -32,6 +32,7 @@ import org.thingsboard.server.common.data.page.TextPageLink;
 import org.thingsboard.server.common.data.security.DeviceCredentials;
 import org.thingsboard.server.common.data.security.DeviceCredentialsType;
 import org.thingsboard.server.dao.customer.CustomerDao;
+import org.thingsboard.server.dao.entity.BaseEntityService;
 import org.thingsboard.server.dao.exception.DataValidationException;
 import org.thingsboard.server.dao.model.CustomerEntity;
 import org.thingsboard.server.dao.model.DeviceEntity;
@@ -53,7 +54,7 @@ import static org.thingsboard.server.dao.service.Validator.validatePageLink;
 
 @Service
 @Slf4j
-public class DeviceServiceImpl implements DeviceService {
+public class DeviceServiceImpl extends BaseEntityService implements DeviceService {
 
     @Autowired
     private DeviceDao deviceDao;
@@ -132,6 +133,7 @@ public class DeviceServiceImpl implements DeviceService {
         if (deviceCredentials != null) {
             deviceCredentialsService.deleteDeviceCredentials(deviceCredentials);
         }
+        deleteEntityRelations(deviceId);
         deviceDao.removeById(deviceId.getId());
     }
 

dao/src/main/java/org/thingsboard/server/dao/entity/BaseEntityService.java

@@ -0,0 +1,37 @@
+/**
+ * Copyright © 2016-2017 The Thingsboard Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.thingsboard.server.dao.entity;
+
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.thingsboard.server.common.data.id.EntityId;
+import org.thingsboard.server.dao.relation.RelationService;
+
+/**
+ * Created by ashvayka on 04.05.17.
+ */
+@Slf4j
+public class BaseEntityService {
+
+    @Autowired
+    protected RelationService relationService;
+
+    protected void deleteEntityRelations(EntityId entityId) {
+        log.trace("Executing deleteEntityRelations [{}]", entityId);
+        relationService.deleteEntityRelations(entityId);
+    }
+
+}

dao/src/main/java/org/thingsboard/server/dao/model/AlarmEntity.java

@@ -0,0 +1,148 @@
+/**
+ * Copyright © 2016-2017 The Thingsboard Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.thingsboard.server.dao.model;
+
+import com.datastax.driver.core.utils.UUIDs;
+import com.datastax.driver.mapping.annotations.*;
+import com.fasterxml.jackson.databind.JsonNode;
+import org.thingsboard.server.common.data.EntityType;
+import org.thingsboard.server.common.data.alarm.Alarm;
+import org.thingsboard.server.common.data.alarm.AlarmId;
+import org.thingsboard.server.common.data.alarm.AlarmSeverity;
+import org.thingsboard.server.common.data.alarm.AlarmStatus;
+import org.thingsboard.server.common.data.id.EntityIdFactory;
+import org.thingsboard.server.common.data.id.TenantId;
+import org.thingsboard.server.dao.model.type.AlarmSeverityCodec;
+import org.thingsboard.server.dao.model.type.AlarmStatusCodec;
+import org.thingsboard.server.dao.model.type.EntityTypeCodec;
+import org.thingsboard.server.dao.model.type.JsonCodec;
+
+import java.util.UUID;
+
+import static org.thingsboard.server.dao.model.ModelConstants.*;
+
+@Table(name = ALARM_COLUMN_FAMILY_NAME)
+public final class AlarmEntity implements BaseEntity<Alarm> {
+
+    @Transient
+    private static final long serialVersionUID = -1265181166886910152L;
+
+    @ClusteringColumn(value = 1)
+    @Column(name = ID_PROPERTY)
+    private UUID id;
+
+    @PartitionKey(value = 0)
+    @Column(name = ALARM_TENANT_ID_PROPERTY)
+    private UUID tenantId;
+
+    @PartitionKey(value = 1)
+    @Column(name = ALARM_ORIGINATOR_ID_PROPERTY)
+    private UUID originatorId;
+
+    @PartitionKey(value = 2)
+    @Column(name = ALARM_ORIGINATOR_TYPE_PROPERTY, codec = EntityTypeCodec.class)
+    private EntityType originatorType;
+
+    @ClusteringColumn(value = 0)
+    @Column(name = ALARM_TYPE_PROPERTY)
+    private String type;
+
+    @Column(name = ALARM_SEVERITY_PROPERTY, codec = AlarmSeverityCodec.class)
+    private AlarmSeverity severity;
+
+    @Column(name = ALARM_STATUS_PROPERTY, codec = AlarmStatusCodec.class)
+    private AlarmStatus status;
+
+    @Column(name = ALARM_START_TS_PROPERTY)
+    private Long startTs;
+
+    @Column(name = ALARM_END_TS_PROPERTY)
+    private Long endTs;
+
+    @Column(name = ALARM_ACK_TS_PROPERTY)
+    private Long ackTs;
+
+    @Column(name = ALARM_CLEAR_TS_PROPERTY)
+    private Long clearTs;
+
+    @Column(name = ALARM_DETAILS_PROPERTY, codec = JsonCodec.class)
+    private JsonNode details;
+
+    @Column(name = ALARM_PROPAGATE_PROPERTY)
+    private Boolean propagate;
+
+    public AlarmEntity() {
+        super();
+    }
+
+    public AlarmEntity(Alarm alarm) {
+        if (alarm.getId() != null) {
+            this.id = alarm.getId().getId();
+        }
+        if (alarm.getTenantId() != null) {
+            this.tenantId = alarm.getTenantId().getId();
+        }
+        this.type = alarm.getType();
+        this.originatorId = alarm.getOriginator().getId();
+        this.originatorType = alarm.getOriginator().getEntityType();
+        this.type = alarm.getType();
+        this.severity = alarm.getSeverity();
+        this.status = alarm.getStatus();
+        this.propagate = alarm.isPropagate();
+        this.startTs = alarm.getStartTs();
+        this.endTs = alarm.getEndTs();
+        this.ackTs = alarm.getAckTs();
+        this.clearTs = alarm.getClearTs();
+        this.details = alarm.getDetails();
+    }
+
+    public UUID getId() {
+        return id;
+    }
+
+    public void setId(UUID id) {
+        this.id = id;
+    }
+
+    public UUID getTenantId() {
+        return tenantId;
+    }
+
+    public void setTenantId(UUID tenantId) {
+        this.tenantId = tenantId;
+    }
+
+    @Override
+    public Alarm toData() {
+        Alarm alarm = new Alarm(new AlarmId(id));
+        alarm.setCreatedTime(UUIDs.unixTimestamp(id));
+        if (tenantId != null) {
+            alarm.setTenantId(new TenantId(tenantId));
+        }
+        alarm.setOriginator(EntityIdFactory.getByTypeAndUuid(originatorType, originatorId));
+        alarm.setType(type);
+        alarm.setSeverity(severity);
+        alarm.setStatus(status);
+        alarm.setPropagate(propagate);
+        alarm.setStartTs(startTs);
+        alarm.setEndTs(endTs);
+        alarm.setAckTs(ackTs);
+        alarm.setClearTs(clearTs);
+        alarm.setDetails(details);
+        return alarm;
+    }
+
+}

dao/src/main/java/org/thingsboard/server/dao/model/AssetEntity.java

@@ -0,0 +1,235 @@
+/**
+ * Copyright © 2016-2017 The Thingsboard Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.thingsboard.server.dao.model;
+
+import com.datastax.driver.core.utils.UUIDs;
+import com.datastax.driver.mapping.annotations.Column;
+import com.datastax.driver.mapping.annotations.PartitionKey;
+import com.datastax.driver.mapping.annotations.Table;
+import com.datastax.driver.mapping.annotations.Transient;
+import com.fasterxml.jackson.databind.JsonNode;
+import org.thingsboard.server.common.data.asset.Asset;
+import org.thingsboard.server.common.data.id.AssetId;
+import org.thingsboard.server.common.data.id.CustomerId;
+import org.thingsboard.server.common.data.id.TenantId;
+import org.thingsboard.server.dao.model.type.JsonCodec;
+
+import java.util.UUID;
+
+import static org.thingsboard.server.dao.model.ModelConstants.*;
+
+@Table(name = ASSET_COLUMN_FAMILY_NAME)
+public final class AssetEntity implements SearchTextEntity<Asset> {
+
+    @Transient
+    private static final long serialVersionUID = -1265181166886910152L;
+
+    @PartitionKey(value = 0)
+    @Column(name = ID_PROPERTY)
+    private UUID id;
+
+    @PartitionKey(value = 1)
+    @Column(name = ASSET_TENANT_ID_PROPERTY)
+    private UUID tenantId;
+
+    @PartitionKey(value = 2)
+    @Column(name = ASSET_CUSTOMER_ID_PROPERTY)
+    private UUID customerId;
+
+    @Column(name = ASSET_NAME_PROPERTY)
+    private String name;
+
+    @Column(name = ASSET_TYPE_PROPERTY)
+    private String type;
+
+    @Column(name = SEARCH_TEXT_PROPERTY)
+    private String searchText;
+
+    @Column(name = ASSET_ADDITIONAL_INFO_PROPERTY, codec = JsonCodec.class)
+    private JsonNode additionalInfo;
+
+    public AssetEntity() {
+        super();
+    }
+
+    public AssetEntity(Asset asset) {
+        if (asset.getId() != null) {
+            this.id = asset.getId().getId();
+        }
+        if (asset.getTenantId() != null) {
+            this.tenantId = asset.getTenantId().getId();
+        }
+        if (asset.getCustomerId() != null) {
+            this.customerId = asset.getCustomerId().getId();
+        }
+        this.name = asset.getName();
+        this.type = asset.getType();
+        this.additionalInfo = asset.getAdditionalInfo();
+    }
+
+    public UUID getId() {
+        return id;
+    }
+
+    public void setId(UUID id) {
+        this.id = id;
+    }
+
+    public UUID getTenantId() {
+        return tenantId;
+    }
+
+    public void setTenantId(UUID tenantId) {
+        this.tenantId = tenantId;
+    }
+
+    public UUID getCustomerId() {
+        return customerId;
+    }
+
+    public void setCustomerId(UUID customerId) {
+        this.customerId = customerId;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public String getType() {
+        return type;
+    }
+
+    public void setType(String type) {
+        this.type = type;
+    }
+
+    public JsonNode getAdditionalInfo() {
+        return additionalInfo;
+    }
+
+    public void setAdditionalInfo(JsonNode additionalInfo) {
+        this.additionalInfo = additionalInfo;
+    }
+
+    @Override
+    public String getSearchTextSource() {
+        return name;
+    }
+
+    @Override
+    public void setSearchText(String searchText) {
+        this.searchText = searchText;
+    }
+
+    public String getSearchText() {
+        return searchText;
+    }
+
+    @Override
+    public int hashCode() {
+        final int prime = 31;
+        int result = 1;
+        result = prime * result + ((additionalInfo == null) ? 0 : additionalInfo.hashCode());
+        result = prime * result + ((customerId == null) ? 0 : customerId.hashCode());
+        result = prime * result + ((id == null) ? 0 : id.hashCode());
+        result = prime * result + ((name == null) ? 0 : name.hashCode());
+        result = prime * result + ((type == null) ? 0 : type.hashCode());
+        result = prime * result + ((tenantId == null) ? 0 : tenantId.hashCode());
+        return result;
+    }
+
+    @Override
+    public boolean equals(Object obj) {
+        if (this == obj)
+            return true;
+        if (obj == null)
+            return false;
+        if (getClass() != obj.getClass())
+            return false;
+        AssetEntity other = (AssetEntity) obj;
+        if (additionalInfo == null) {
+            if (other.additionalInfo != null)
+                return false;
+        } else if (!additionalInfo.equals(other.additionalInfo))
+            return false;
+        if (customerId == null) {
+            if (other.customerId != null)
+                return false;
+        } else if (!customerId.equals(other.customerId))
+            return false;
+        if (id == null) {
+            if (other.id != null)
+                return false;
+        } else if (!id.equals(other.id))
+            return false;
+        if (name == null) {
+            if (other.name != null)
+                return false;
+        } else if (!name.equals(other.name))
+            return false;
+        if (type == null) {
+            if (other.type != null)
+                return false;
+        } else if (!type.equals(other.type))
+            return false;
+        if (tenantId == null) {
+            if (other.tenantId != null)
+                return false;
+        } else if (!tenantId.equals(other.tenantId))
+            return false;
+        return true;
+    }
+
+    @Override
+    public String toString() {
+        StringBuilder builder = new StringBuilder();
+        builder.append("AssetEntity [id=");
+        builder.append(id);
+        builder.append(", tenantId=");
+        builder.append(tenantId);
+        builder.append(", customerId=");
+        builder.append(customerId);
+        builder.append(", name=");
+        builder.append(name);
+        builder.append(", type=");
+        builder.append(type);
+        builder.append(", additionalInfo=");
+        builder.append(additionalInfo);
+        builder.append("]");
+        return builder.toString();
+    }
+
+    @Override
+    public Asset toData() {
+        Asset asset = new Asset(new AssetId(id));
+        asset.setCreatedTime(UUIDs.unixTimestamp(id));
+        if (tenantId != null) {
+            asset.setTenantId(new TenantId(tenantId));
+        }
+        if (customerId != null) {
+            asset.setCustomerId(new CustomerId(customerId));
+        }
+        asset.setName(name);
+        asset.setType(type);
+        asset.setAdditionalInfo(additionalInfo);
+        return asset;
+    }
+
+}

dao/src/main/java/org/thingsboard/server/dao/model/EventEntity.java

@@ -35,7 +35,7 @@ import static org.thingsboard.server.dao.model.ModelConstants.*;
  */
 @Data
 @NoArgsConstructor
-@Table(name = DEVICE_COLUMN_FAMILY_NAME)
+@Table(name = EVENT_COLUMN_FAMILY_NAME)
 public class EventEntity implements BaseEntity<Event> {
 
     @Transient
@@ -98,23 +98,7 @@ public class EventEntity implements BaseEntity<Event> {
         Event event = new Event(new EventId(id));
         event.setCreatedTime(UUIDs.unixTimestamp(id));
         event.setTenantId(new TenantId(tenantId));
-        switch (entityType) {
-            case TENANT:
-                event.setEntityId(new TenantId(entityId));
-                break;
-            case DEVICE:
-                event.setEntityId(new DeviceId(entityId));
-                break;
-            case CUSTOMER:
-                event.setEntityId(new CustomerId(entityId));
-                break;
-            case RULE:
-                event.setEntityId(new RuleId(entityId));
-                break;
-            case PLUGIN:
-                event.setEntityId(new PluginId(entityId));
-                break;
-        }
+        event.setEntityId(EntityIdFactory.getByTypeAndUuid(entityType, entityId));
         event.setBody(body);
         event.setType(eventType);
         event.setUid(eventUId);

dao/src/main/java/org/thingsboard/server/dao/model/ModelConstants.java

@@ -126,6 +126,49 @@ public class ModelConstants {
     public static final String DEVICE_BY_CUSTOMER_AND_SEARCH_TEXT_COLUMN_FAMILY_NAME = "device_by_customer_and_search_text";
     public static final String DEVICE_BY_TENANT_AND_NAME_VIEW_NAME = "device_by_tenant_and_name";
 
+    /**
+     * Cassandra asset constants.
+     */
+    public static final String ASSET_COLUMN_FAMILY_NAME = "asset";
+    public static final String ASSET_TENANT_ID_PROPERTY = TENTANT_ID_PROPERTY;
+    public static final String ASSET_CUSTOMER_ID_PROPERTY = CUSTOMER_ID_PROPERTY;
+    public static final String ASSET_NAME_PROPERTY = "name";
+    public static final String ASSET_TYPE_PROPERTY = "type";
+    public static final String ASSET_ADDITIONAL_INFO_PROPERTY = ADDITIONAL_INFO_PROPERTY;
+
+    public static final String ASSET_BY_TENANT_AND_SEARCH_TEXT_COLUMN_FAMILY_NAME = "asset_by_tenant_and_search_text";
+    public static final String ASSET_BY_CUSTOMER_AND_SEARCH_TEXT_COLUMN_FAMILY_NAME = "asset_by_customer_and_search_text";
+    public static final String ASSET_BY_TENANT_AND_NAME_VIEW_NAME = "asset_by_tenant_and_name";
+
+    /**
+     * Cassandra alarm constants.
+     */
+    public static final String ALARM_COLUMN_FAMILY_NAME = "alarm";
+    public static final String ALARM_TENANT_ID_PROPERTY = TENTANT_ID_PROPERTY;
+    public static final String ALARM_TYPE_PROPERTY = "type";
+    public static final String ALARM_DETAILS_PROPERTY = "details";
+    public static final String ALARM_ORIGINATOR_ID_PROPERTY = "originator_id";
+    public static final String ALARM_ORIGINATOR_TYPE_PROPERTY = "originator_type";
+    public static final String ALARM_SEVERITY_PROPERTY = "severity";
+    public static final String ALARM_STATUS_PROPERTY = "status";
+    public static final String ALARM_START_TS_PROPERTY = "start_ts";
+    public static final String ALARM_END_TS_PROPERTY = "end_ts";
+    public static final String ALARM_ACK_TS_PROPERTY = "ack_ts";
+    public static final String ALARM_CLEAR_TS_PROPERTY = "clear_ts";
+    public static final String ALARM_PROPAGATE_PROPERTY = "propagate";
+
+    /**
+     * Cassandra entity relation constants.
+     */
+    public static final String RELATION_COLUMN_FAMILY_NAME = "relation";
+    public static final String RELATION_FROM_ID_PROPERTY = "from_id";
+    public static final String RELATION_FROM_TYPE_PROPERTY = "from_type";
+    public static final String RELATION_TO_ID_PROPERTY = "to_id";
+    public static final String RELATION_TO_TYPE_PROPERTY = "to_type";
+    public static final String RELATION_TYPE_PROPERTY = "relation_type";
+
+    public static final String RELATION_REVERSE_VIEW_NAME = "reverse_relation";
+
 
     /**
      * Cassandra device_credentials constants.

dao/src/main/java/org/thingsboard/server/dao/model/type/AlarmSeverityCodec.java

@@ -0,0 +1,29 @@
+/**
+ * Copyright © 2016-2017 The Thingsboard Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.thingsboard.server.dao.model.type;
+
+import com.datastax.driver.extras.codecs.enums.EnumNameCodec;
+import org.thingsboard.server.common.data.alarm.AlarmSeverity;
+import org.thingsboard.server.common.data.alarm.AlarmStatus;
+import org.thingsboard.server.dao.alarm.AlarmService;
+
+public class AlarmSeverityCodec extends EnumNameCodec<AlarmSeverity> {
+
+    public AlarmSeverityCodec() {
+        super(AlarmSeverity.class);
+    }
+
+}

dao/src/main/java/org/thingsboard/server/dao/model/type/AlarmStatusCodec.java

@@ -0,0 +1,27 @@
+/**
+ * Copyright © 2016-2017 The Thingsboard Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.thingsboard.server.dao.model.type;
+
+import com.datastax.driver.extras.codecs.enums.EnumNameCodec;
+import org.thingsboard.server.common.data.alarm.AlarmStatus;
+
+public class AlarmStatusCodec extends EnumNameCodec<AlarmStatus> {
+
+    public AlarmStatusCodec() {
+        super(AlarmStatus.class);
+    }
+
+}

dao/src/main/java/org/thingsboard/server/dao/plugin/BasePluginService.java

@@ -15,13 +15,14 @@
  */
 package org.thingsboard.server.dao.plugin;
 
+import com.google.common.util.concurrent.Futures;
+import com.google.common.util.concurrent.ListenableFuture;
 import lombok.extern.slf4j.Slf4j;
 import org.apache.commons.lang3.StringUtils;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Service;
 import org.thingsboard.server.common.data.id.PluginId;
+import org.thingsboard.server.common.data.id.RuleId;
 import org.thingsboard.server.common.data.id.TenantId;
 import org.thingsboard.server.common.data.page.TextPageData;
 import org.thingsboard.server.common.data.page.TextPageLink;
@@ -29,7 +30,9 @@ import org.thingsboard.server.common.data.plugin.ComponentDescriptor;
 import org.thingsboard.server.common.data.plugin.ComponentLifecycleState;
 import org.thingsboard.server.common.data.plugin.ComponentType;
 import org.thingsboard.server.common.data.plugin.PluginMetaData;
+import org.thingsboard.server.common.data.rule.RuleMetaData;
 import org.thingsboard.server.dao.component.ComponentDescriptorService;
+import org.thingsboard.server.dao.entity.BaseEntityService;
 import org.thingsboard.server.dao.exception.DataValidationException;
 import org.thingsboard.server.dao.exception.DatabaseException;
 import org.thingsboard.server.dao.exception.IncorrectParameterException;
@@ -48,10 +51,11 @@ import java.util.stream.Collectors;
 
 import static org.thingsboard.server.dao.DaoUtil.convertDataList;
 import static org.thingsboard.server.dao.DaoUtil.getData;
+import static org.thingsboard.server.dao.service.Validator.validateId;
 
 @Service
 @Slf4j
-public class BasePluginService implements PluginService {
+public class BasePluginService extends BaseEntityService implements PluginService {
 
     //TODO: move to a better place.
     public static final TenantId SYSTEM_TENANT = new TenantId(ModelConstants.NULL_UUID);
@@ -108,6 +112,13 @@ public class BasePluginService implements PluginService {
         return getData(pluginDao.findById(pluginId));
     }
 
+    @Override
+    public ListenableFuture<PluginMetaData> findPluginByIdAsync(PluginId pluginId) {
+        validateId(pluginId, "Incorrect plugin id for search plugin request.");
+        ListenableFuture<PluginMetaDataEntity> pluginEntity = pluginDao.findByIdAsync(pluginId.getId());
+        return Futures.transform(pluginEntity, (com.google.common.base.Function<? super PluginMetaDataEntity, ? extends PluginMetaData>) input -> getData(input));
+    }
+
     @Override
     public PluginMetaData findPluginByApiToken(String apiToken) {
         Validator.validateString(apiToken, "Incorrect plugin apiToken for search request.");
@@ -205,6 +216,7 @@ public class BasePluginService implements PluginService {
     @Override
     public void deletePluginById(PluginId pluginId) {
         Validator.validateId(pluginId, "Incorrect plugin id for delete request.");
+        deleteEntityRelations(pluginId);
         checkRulesAndDelete(pluginId.getId());
     }
 

dao/src/main/java/org/thingsboard/server/dao/plugin/PluginService.java

@@ -15,6 +15,7 @@
  */
 package org.thingsboard.server.dao.plugin;
 
+import com.google.common.util.concurrent.ListenableFuture;
 import org.thingsboard.server.common.data.id.PluginId;
 import org.thingsboard.server.common.data.id.TenantId;
 import org.thingsboard.server.common.data.page.TextPageData;
@@ -29,6 +30,8 @@ public interface PluginService {
 
     PluginMetaData findPluginById(PluginId pluginId);
 
+    ListenableFuture<PluginMetaData> findPluginByIdAsync(PluginId pluginId);
+
     PluginMetaData findPluginByApiToken(String apiToken);
 
     TextPageData<PluginMetaData> findSystemPlugins(TextPageLink pageLink);

dao/src/main/java/org/thingsboard/server/dao/relation/BaseRelationDao.java

@@ -0,0 +1,279 @@
+/**
+ * Copyright © 2016-2017 The Thingsboard Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.thingsboard.server.dao.relation;
+
+import com.datastax.driver.core.*;
+import com.fasterxml.jackson.databind.JsonNode;
+import com.google.common.base.Function;
+import com.google.common.util.concurrent.Futures;
+import com.google.common.util.concurrent.ListenableFuture;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.stereotype.Component;
+import org.thingsboard.server.common.data.id.EntityId;
+import org.thingsboard.server.common.data.id.EntityIdFactory;
+import org.thingsboard.server.common.data.relation.EntityRelation;
+import org.thingsboard.server.dao.AbstractAsyncDao;
+import org.thingsboard.server.dao.model.ModelConstants;
+
+import javax.annotation.Nullable;
+import javax.annotation.PostConstruct;
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * Created by ashvayka on 25.04.17.
+ */
+@Component
+@Slf4j
+public class BaseRelationDao extends AbstractAsyncDao implements RelationDao {
+
+    private static final String SELECT_COLUMNS = "SELECT " +
+            ModelConstants.RELATION_FROM_ID_PROPERTY + "," +
+            ModelConstants.RELATION_FROM_TYPE_PROPERTY + "," +
+            ModelConstants.RELATION_TO_ID_PROPERTY + "," +
+            ModelConstants.RELATION_TO_TYPE_PROPERTY + "," +
+            ModelConstants.RELATION_TYPE_PROPERTY + "," +
+            ModelConstants.ADDITIONAL_INFO_PROPERTY;
+    public static final String FROM = " FROM ";
+    public static final String WHERE = " WHERE ";
+    public static final String AND = " AND ";
+
+    private PreparedStatement saveStmt;
+    private PreparedStatement findAllByFromStmt;
+    private PreparedStatement findAllByFromAndTypeStmt;
+    private PreparedStatement findAllByToStmt;
+    private PreparedStatement findAllByToAndTypeStmt;
+    private PreparedStatement checkRelationStmt;
+    private PreparedStatement deleteStmt;
+    private PreparedStatement deleteAllByEntityStmt;
+
+    @PostConstruct
+    public void init() {
+        super.startExecutor();
+    }
+
+    @Override
+    public ListenableFuture<List<EntityRelation>> findAllByFrom(EntityId from) {
+        BoundStatement stmt = getFindAllByFromStmt().bind().setUUID(0, from.getId()).setString(1, from.getEntityType().name());
+        return executeAsyncRead(from, stmt);
+    }
+
+    @Override
+    public ListenableFuture<List<EntityRelation>> findAllByFromAndType(EntityId from, String relationType) {
+        BoundStatement stmt = getFindAllByFromAndTypeStmt().bind()
+                .setUUID(0, from.getId())
+                .setString(1, from.getEntityType().name())
+                .setString(2, relationType);
+        return executeAsyncRead(from, stmt);
+    }
+
+    @Override
+    public ListenableFuture<List<EntityRelation>> findAllByTo(EntityId to) {
+        BoundStatement stmt = getFindAllByToStmt().bind().setUUID(0, to.getId()).setString(1, to.getEntityType().name());
+        return executeAsyncRead(to, stmt);
+    }
+
+    @Override
+    public ListenableFuture<List<EntityRelation>> findAllByToAndType(EntityId to, String relationType) {
+        BoundStatement stmt = getFindAllByToAndTypeStmt().bind()
+                .setUUID(0, to.getId())
+                .setString(1, to.getEntityType().name())
+                .setString(2, relationType);
+        return executeAsyncRead(to, stmt);
+    }
+
+    @Override
+    public ListenableFuture<Boolean> checkRelation(EntityId from, EntityId to, String relationType) {
+        BoundStatement stmt = getCheckRelationStmt().bind()
+                .setUUID(0, from.getId())
+                .setString(1, from.getEntityType().name())
+                .setUUID(2, to.getId())
+                .setString(3, to.getEntityType().name())
+                .setString(4, relationType);
+        return getFuture(executeAsyncRead(stmt), rs -> rs != null ? rs.one() != null : false);
+    }
+
+    @Override
+    public ListenableFuture<Boolean> saveRelation(EntityRelation relation) {
+        BoundStatement stmt = getSaveStmt().bind()
+                .setUUID(0, relation.getFrom().getId())
+                .setString(1, relation.getFrom().getEntityType().name())
+                .setUUID(2, relation.getTo().getId())
+                .setString(3, relation.getTo().getEntityType().name())
+                .setString(4, relation.getType())
+                .set(5, relation.getAdditionalInfo(), JsonNode.class);
+        ResultSetFuture future = executeAsyncWrite(stmt);
+        return getBooleanListenableFuture(future);
+    }
+
+    @Override
+    public ListenableFuture<Boolean> deleteRelation(EntityRelation relation) {
+        return deleteRelation(relation.getFrom(), relation.getTo(), relation.getType());
+    }
+
+    @Override
+    public ListenableFuture<Boolean> deleteRelation(EntityId from, EntityId to, String relationType) {
+        BoundStatement stmt = getDeleteStmt().bind()
+                .setUUID(0, from.getId())
+                .setString(1, from.getEntityType().name())
+                .setUUID(2, to.getId())
+                .setString(3, to.getEntityType().name())
+                .setString(4, relationType);
+        ResultSetFuture future = executeAsyncWrite(stmt);
+        return getBooleanListenableFuture(future);
+    }
+
+    @Override
+    public ListenableFuture<Boolean> deleteOutboundRelations(EntityId entity) {
+        BoundStatement stmt = getDeleteAllByEntityStmt().bind()
+                .setUUID(0, entity.getId())
+                .setString(1, entity.getEntityType().name());
+        ResultSetFuture future = executeAsyncWrite(stmt);
+        return getBooleanListenableFuture(future);
+    }
+
+    private PreparedStatement getSaveStmt() {
+        if (saveStmt == null) {
+            saveStmt = getSession().prepare("INSERT INTO " + ModelConstants.RELATION_COLUMN_FAMILY_NAME + " " +
+                    "(" + ModelConstants.RELATION_FROM_ID_PROPERTY +
+                    "," + ModelConstants.RELATION_FROM_TYPE_PROPERTY +
+                    "," + ModelConstants.RELATION_TO_ID_PROPERTY +
+                    "," + ModelConstants.RELATION_TO_TYPE_PROPERTY +
+                    "," + ModelConstants.RELATION_TYPE_PROPERTY +
+                    "," + ModelConstants.ADDITIONAL_INFO_PROPERTY + ")" +
+                    " VALUES(?, ?, ?, ?, ?, ?)");
+        }
+        return saveStmt;
+    }
+
+    private PreparedStatement getDeleteStmt() {
+        if (deleteStmt == null) {
+            deleteStmt = getSession().prepare("DELETE FROM " + ModelConstants.RELATION_COLUMN_FAMILY_NAME +
+                    WHERE + ModelConstants.RELATION_FROM_ID_PROPERTY + " = ?" +
+                    AND + ModelConstants.RELATION_FROM_TYPE_PROPERTY + " = ?" +
+                    AND + ModelConstants.RELATION_TO_ID_PROPERTY + " = ?" +
+                    AND + ModelConstants.RELATION_TO_TYPE_PROPERTY + " = ?" +
+                    AND + ModelConstants.RELATION_TYPE_PROPERTY + " = ?");
+        }
+        return deleteStmt;
+    }
+
+    private PreparedStatement getDeleteAllByEntityStmt() {
+        if (deleteAllByEntityStmt == null) {
+            deleteAllByEntityStmt = getSession().prepare("DELETE FROM " + ModelConstants.RELATION_COLUMN_FAMILY_NAME +
+                    WHERE + ModelConstants.RELATION_FROM_ID_PROPERTY + " = ?" +
+                    AND + ModelConstants.RELATION_FROM_TYPE_PROPERTY + " = ?");
+        }
+        return deleteAllByEntityStmt;
+    }
+
+    private PreparedStatement getFindAllByFromStmt() {
+        if (findAllByFromStmt == null) {
+            findAllByFromStmt = getSession().prepare(SELECT_COLUMNS + " " +
+                    FROM + ModelConstants.RELATION_COLUMN_FAMILY_NAME + " " +
+                    WHERE + ModelConstants.RELATION_FROM_ID_PROPERTY + " = ? " +
+                    AND + ModelConstants.RELATION_FROM_TYPE_PROPERTY + " = ? ");
+        }
+        return findAllByFromStmt;
+    }
+
+    private PreparedStatement getFindAllByFromAndTypeStmt() {
+        if (findAllByFromAndTypeStmt == null) {
+            findAllByFromAndTypeStmt = getSession().prepare(SELECT_COLUMNS + " " +
+                    FROM + ModelConstants.RELATION_COLUMN_FAMILY_NAME + " " +
+                    WHERE + ModelConstants.RELATION_FROM_ID_PROPERTY + " = ? " +
+                    AND + ModelConstants.RELATION_FROM_TYPE_PROPERTY + " = ? " +
+                    AND + ModelConstants.RELATION_TYPE_PROPERTY + " = ? ");
+        }
+        return findAllByFromAndTypeStmt;
+    }
+
+    private PreparedStatement getFindAllByToStmt() {
+        if (findAllByToStmt == null) {
+            findAllByToStmt = getSession().prepare(SELECT_COLUMNS + " " +
+                    FROM + ModelConstants.RELATION_REVERSE_VIEW_NAME + " " +
+                    WHERE + ModelConstants.RELATION_TO_ID_PROPERTY + " = ? " +
+                    AND + ModelConstants.RELATION_TO_TYPE_PROPERTY + " = ? ");
+        }
+        return findAllByToStmt;
+    }
+
+    private PreparedStatement getFindAllByToAndTypeStmt() {
+        if (findAllByToAndTypeStmt == null) {
+            findAllByToAndTypeStmt = getSession().prepare(SELECT_COLUMNS + " " +
+                    FROM + ModelConstants.RELATION_REVERSE_VIEW_NAME + " " +
+                    WHERE + ModelConstants.RELATION_TO_ID_PROPERTY + " = ? " +
+                    AND + ModelConstants.RELATION_TO_TYPE_PROPERTY + " = ? " +
+                    AND + ModelConstants.RELATION_TYPE_PROPERTY + " = ? ");
+        }
+        return findAllByToAndTypeStmt;
+    }
+
+    private PreparedStatement getCheckRelationStmt() {
+        if (checkRelationStmt == null) {
+            checkRelationStmt = getSession().prepare(SELECT_COLUMNS + " " +
+                    FROM + ModelConstants.RELATION_COLUMN_FAMILY_NAME + " " +
+                    WHERE + ModelConstants.RELATION_FROM_ID_PROPERTY + " = ? " +
+                    AND + ModelConstants.RELATION_FROM_TYPE_PROPERTY + " = ? " +
+                    AND + ModelConstants.RELATION_TO_ID_PROPERTY + " = ? " +
+                    AND + ModelConstants.RELATION_TO_TYPE_PROPERTY + " = ? " +
+                    AND + ModelConstants.RELATION_TYPE_PROPERTY + " = ? ");
+        }
+        return checkRelationStmt;
+    }
+
+    private EntityRelation getEntityRelation(Row row) {
+        EntityRelation relation = new EntityRelation();
+        relation.setType(row.getString(ModelConstants.RELATION_TYPE_PROPERTY));
+        relation.setAdditionalInfo(row.get(ModelConstants.ADDITIONAL_INFO_PROPERTY, JsonNode.class));
+        relation.setFrom(toEntity(row, ModelConstants.RELATION_FROM_ID_PROPERTY, ModelConstants.RELATION_FROM_TYPE_PROPERTY));
+        relation.setTo(toEntity(row, ModelConstants.RELATION_TO_ID_PROPERTY, ModelConstants.RELATION_TO_TYPE_PROPERTY));
+        return relation;
+    }
+
+    private EntityId toEntity(Row row, String uuidColumn, String typeColumn) {
+        return EntityIdFactory.getByTypeAndUuid(row.getString(typeColumn), row.getUUID(uuidColumn));
+    }
+
+    private ListenableFuture<List<EntityRelation>> executeAsyncRead(EntityId from, BoundStatement stmt) {
+        log.debug("Generated query [{}] for entity {}", stmt, from);
+        return getFuture(executeAsyncRead(stmt), rs -> {
+            List<Row> rows = rs.all();
+            List<EntityRelation> entries = new ArrayList<>(rows.size());
+            if (!rows.isEmpty()) {
+                rows.forEach(row -> {
+                    entries.add(getEntityRelation(row));
+                });
+            }
+            return entries;
+        });
+    }
+
+    private ListenableFuture<Boolean> getBooleanListenableFuture(ResultSetFuture rsFuture) {
+        return getFuture(rsFuture, rs -> rs != null ? rs.wasApplied() : false);
+    }
+
+    private <T> ListenableFuture<T> getFuture(ResultSetFuture future, java.util.function.Function<ResultSet, T> transformer) {
+        return Futures.transform(future, new Function<ResultSet, T>() {
+            @Nullable
+            @Override
+            public T apply(@Nullable ResultSet input) {
+                return transformer.apply(input);
+            }
+        }, readResultsProcessingExecutor);
+    }
+
+}

dao/src/main/java/org/thingsboard/server/dao/relation/BaseRelationService.java

@@ -0,0 +1,261 @@
+/**
+ * Copyright © 2016-2017 The Thingsboard Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.thingsboard.server.dao.relation;
+
+import com.google.common.base.Function;
+import com.google.common.util.concurrent.AsyncFunction;
+import com.google.common.util.concurrent.Futures;
+import com.google.common.util.concurrent.ListenableFuture;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+import org.springframework.util.StringUtils;
+import org.thingsboard.server.common.data.id.EntityId;
+import org.thingsboard.server.common.data.relation.EntityRelation;
+import org.thingsboard.server.dao.exception.DataValidationException;
+
+import javax.annotation.Nullable;
+import java.util.*;
+import java.util.concurrent.ConcurrentHashMap;
+
+/**
+ * Created by ashvayka on 28.04.17.
+ */
+@Service
+@Slf4j
+public class BaseRelationService implements RelationService {
+
+    @Autowired
+    private RelationDao relationDao;
+
+    @Override
+    public ListenableFuture<Boolean> checkRelation(EntityId from, EntityId to, String relationType) {
+        log.trace("Executing checkRelation [{}][{}][{}]", from, to, relationType);
+        validate(from, to, relationType);
+        return relationDao.checkRelation(from, to, relationType);
+    }
+
+    @Override
+    public ListenableFuture<Boolean> saveRelation(EntityRelation relation) {
+        log.trace("Executing saveRelation [{}]", relation);
+        validate(relation);
+        return relationDao.saveRelation(relation);
+    }
+
+    @Override
+    public ListenableFuture<Boolean> deleteRelation(EntityRelation relation) {
+        log.trace("Executing deleteRelation [{}]", relation);
+        validate(relation);
+        return relationDao.deleteRelation(relation);
+    }
+
+    @Override
+    public ListenableFuture<Boolean> deleteRelation(EntityId from, EntityId to, String relationType) {
+        log.trace("Executing deleteRelation [{}][{}][{}]", from, to, relationType);
+        validate(from, to, relationType);
+        return relationDao.deleteRelation(from, to, relationType);
+    }
+
+    @Override
+    public ListenableFuture<Boolean> deleteEntityRelations(EntityId entity) {
+        log.trace("Executing deleteEntityRelations [{}]", entity);
+        validate(entity);
+        ListenableFuture<List<EntityRelation>> inboundRelations = relationDao.findAllByTo(entity);
+        ListenableFuture<List<Boolean>> inboundDeletions = Futures.transform(inboundRelations, new AsyncFunction<List<EntityRelation>, List<Boolean>>() {
+            @Override
+            public ListenableFuture<List<Boolean>> apply(List<EntityRelation> relations) throws Exception {
+                List<ListenableFuture<Boolean>> results = new ArrayList<>();
+                for (EntityRelation relation : relations) {
+                    results.add(relationDao.deleteRelation(relation));
+                }
+                return Futures.allAsList(results);
+            }
+        });
+
+        ListenableFuture<Boolean> inboundFuture = Futures.transform(inboundDeletions, getListToBooleanFunction());
+
+        ListenableFuture<Boolean> outboundFuture = relationDao.deleteOutboundRelations(entity);
+
+        return Futures.transform(Futures.allAsList(Arrays.asList(inboundFuture, outboundFuture)), getListToBooleanFunction());
+    }
+
+    @Override
+    public ListenableFuture<List<EntityRelation>> findByFrom(EntityId from) {
+        log.trace("Executing findByFrom [{}]", from);
+        validate(from);
+        return relationDao.findAllByFrom(from);
+    }
+
+    @Override
+    public ListenableFuture<List<EntityRelation>> findByFromAndType(EntityId from, String relationType) {
+        log.trace("Executing findByFromAndType [{}][{}]", from, relationType);
+        validate(from);
+        validateType(relationType);
+        return relationDao.findAllByFromAndType(from, relationType);
+    }
+
+    @Override
+    public ListenableFuture<List<EntityRelation>> findByTo(EntityId to) {
+        log.trace("Executing findByTo [{}]", to);
+        validate(to);
+        return relationDao.findAllByTo(to);
+    }
+
+    @Override
+    public ListenableFuture<List<EntityRelation>> findByToAndType(EntityId to, String relationType) {
+        log.trace("Executing findByToAndType [{}][{}]", to, relationType);
+        validate(to);
+        validateType(relationType);
+        return relationDao.findAllByToAndType(to, relationType);
+    }
+
+    @Override
+    public ListenableFuture<List<EntityRelation>> findByQuery(EntityRelationsQuery query) {
+        log.trace("Executing findByQuery [{}][{}]", query);
+        RelationsSearchParameters params = query.getParameters();
+        final List<EntityTypeFilter> filters = query.getFilters();
+        if (filters == null || filters.isEmpty()) {
+            log.debug("Filters are not set [{}]", query);
+        }
+
+        int maxLvl = params.getMaxLevel() > 0 ? params.getMaxLevel() : Integer.MAX_VALUE;
+
+        try {
+            ListenableFuture<Set<EntityRelation>> relationSet = findRelationsRecursively(params.getEntityId(), params.getDirection(), maxLvl, new ConcurrentHashMap<>());
+            return Futures.transform(relationSet, (Function<Set<EntityRelation>, List<EntityRelation>>) input -> {
+                List<EntityRelation> relations = new ArrayList<>();
+                for (EntityRelation relation : input) {
+                    if (filters == null || filters.isEmpty()) {
+                        relations.add(relation);
+                    } else {
+                        for (EntityTypeFilter filter : filters) {
+                            if (match(filter, relation, params.getDirection())) {
+                                relations.add(relation);
+                                break;
+                            }
+                        }
+                    }
+                }
+                return relations;
+            });
+        } catch (Exception e) {
+            log.warn("Failed to query relations: [{}]", query, e);
+            throw new RuntimeException(e);
+        }
+    }
+
+    protected void validate(EntityRelation relation) {
+        if (relation == null) {
+            throw new DataValidationException("Relation type should be specified!");
+        }
+        validate(relation.getFrom(), relation.getTo(), relation.getType());
+    }
+
+    protected void validate(EntityId from, EntityId to, String type) {
+        validateType(type);
+        if (from == null) {
+            throw new DataValidationException("Relation should contain from entity!");
+        }
+        if (to == null) {
+            throw new DataValidationException("Relation should contain to entity!");
+        }
+    }
+
+    private void validateType(String type) {
+        if (StringUtils.isEmpty(type)) {
+            throw new DataValidationException("Relation type should be specified!");
+        }
+    }
+
+    protected void validate(EntityId entity) {
+        if (entity == null) {
+            throw new DataValidationException("Entity should be specified!");
+        }
+    }
+
+    private Function<List<Boolean>, Boolean> getListToBooleanFunction() {
+        return new Function<List<Boolean>, Boolean>() {
+            @Nullable
+            @Override
+            public Boolean apply(@Nullable List<Boolean> results) {
+                for (Boolean result : results) {
+                    if (result == null || !result) {
+                        return false;
+                    }
+                }
+                return true;
+            }
+        };
+    }
+
+    private boolean match(EntityTypeFilter filter, EntityRelation relation, EntitySearchDirection direction) {
+        if (StringUtils.isEmpty(filter.getRelationType()) || filter.getRelationType().equals(relation.getType())) {
+            if (filter.getEntityTypes() == null || filter.getEntityTypes().isEmpty()) {
+                return true;
+            } else {
+                EntityId entityId = direction == EntitySearchDirection.FROM ? relation.getTo() : relation.getFrom();
+                return filter.getEntityTypes().contains(entityId.getEntityType());
+            }
+        } else {
+            return false;
+        }
+    }
+
+    private ListenableFuture<Set<EntityRelation>> findRelationsRecursively(final EntityId rootId, final EntitySearchDirection direction, int lvl,
+                                                                           final ConcurrentHashMap<EntityId, Boolean> uniqueMap) throws Exception {
+        if (lvl == 0) {
+            return Futures.immediateFuture(Collections.emptySet());
+        }
+        lvl--;
+        //TODO: try to remove this blocking operation
+        Set<EntityRelation> children = new HashSet<>(findRelations(rootId, direction).get());
+        Set<EntityId> childrenIds = new HashSet<>();
+        for (EntityRelation childRelation : children) {
+            log.info("Found Relation: {}", childRelation);
+            EntityId childId;
+            if (direction == EntitySearchDirection.FROM) {
+                childId = childRelation.getTo();
+            } else {
+                childId = childRelation.getFrom();
+            }
+            if (uniqueMap.putIfAbsent(childId, Boolean.TRUE) == null) {
+                log.info("Adding Relation: {}", childId);
+                if (childrenIds.add(childId)) {
+                    log.info("Added Relation: {}", childId);
+                }
+            }
+        }
+        List<ListenableFuture<Set<EntityRelation>>> futures = new ArrayList<>();
+        for (EntityId entityId : childrenIds) {
+            futures.add(findRelationsRecursively(entityId, direction, lvl, uniqueMap));
+        }
+        //TODO: try to remove this blocking operation
+        List<Set<EntityRelation>> relations = Futures.successfulAsList(futures).get();
+        relations.forEach(r -> r.forEach(d -> children.add(d)));
+        return Futures.immediateFuture(children);
+    }
+
+    private ListenableFuture<List<EntityRelation>> findRelations(final EntityId rootId, final EntitySearchDirection direction) {
+        ListenableFuture<List<EntityRelation>> relations;
+        if (direction == EntitySearchDirection.FROM) {
+            relations = findByFrom(rootId);
+        } else {
+            relations = findByTo(rootId);
+        }
+        return relations;
+    }
+
+}

dao/src/main/java/org/thingsboard/server/dao/relation/EntityRelationsQuery.java

@@ -0,0 +1,31 @@
+/**
+ * Copyright © 2016-2017 The Thingsboard Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.thingsboard.server.dao.relation;
+
+import lombok.Data;
+
+import java.util.List;
+
+/**
+ * Created by ashvayka on 02.05.17.
+ */
+@Data
+public class EntityRelationsQuery {
+
+    private RelationsSearchParameters parameters;
+    private List<EntityTypeFilter> filters;
+
+}

dao/src/main/java/org/thingsboard/server/dao/relation/EntitySearchDirection.java

@@ -0,0 +1,25 @@
+/**
+ * Copyright © 2016-2017 The Thingsboard Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.thingsboard.server.dao.relation;
+
+/**
+ * Created by ashvayka on 02.05.17.
+ */
+public enum EntitySearchDirection {
+
+    FROM, TO;
+
+}

dao/src/main/java/org/thingsboard/server/dao/relation/EntityTypeFilter.java

@@ -0,0 +1,35 @@
+/**
+ * Copyright © 2016-2017 The Thingsboard Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.thingsboard.server.dao.relation;
+
+import lombok.AllArgsConstructor;
+import lombok.Data;
+import org.thingsboard.server.common.data.EntityType;
+
+import javax.annotation.Nullable;
+import java.util.List;
+
+/**
+ * Created by ashvayka on 02.05.17.
+ */
+@Data
+@AllArgsConstructor
+public class EntityTypeFilter {
+    @Nullable
+    private String relationType;
+    @Nullable
+    private List<EntityType> entityTypes;
+}

dao/src/main/java/org/thingsboard/server/dao/relation/RelationDao.java

@@ -0,0 +1,47 @@
+/**
+ * Copyright © 2016-2017 The Thingsboard Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.thingsboard.server.dao.relation;
+
+import com.google.common.util.concurrent.ListenableFuture;
+import org.thingsboard.server.common.data.id.EntityId;
+import org.thingsboard.server.common.data.relation.EntityRelation;
+
+import java.util.List;
+
+/**
+ * Created by ashvayka on 25.04.17.
+ */
+public interface RelationDao {
+
+    ListenableFuture<List<EntityRelation>> findAllByFrom(EntityId from);
+
+    ListenableFuture<List<EntityRelation>> findAllByFromAndType(EntityId from, String relationType);
+
+    ListenableFuture<List<EntityRelation>> findAllByTo(EntityId to);
+
+    ListenableFuture<List<EntityRelation>> findAllByToAndType(EntityId to, String relationType);
+
+    ListenableFuture<Boolean> checkRelation(EntityId from, EntityId to, String relationType);
+
+    ListenableFuture<Boolean> saveRelation(EntityRelation relation);
+
+    ListenableFuture<Boolean> deleteRelation(EntityRelation relation);
+
+    ListenableFuture<Boolean> deleteRelation(EntityId from, EntityId to, String relationType);
+
+    ListenableFuture<Boolean> deleteOutboundRelations(EntityId entity);
+
+}

dao/src/main/java/org/thingsboard/server/dao/relation/RelationService.java

@@ -0,0 +1,52 @@
+/**
+ * Copyright © 2016-2017 The Thingsboard Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.thingsboard.server.dao.relation;
+
+import com.google.common.util.concurrent.ListenableFuture;
+import org.thingsboard.server.common.data.id.EntityId;
+import org.thingsboard.server.common.data.relation.EntityRelation;
+
+import java.util.List;
+
+/**
+ * Created by ashvayka on 27.04.17.
+ */
+public interface RelationService {
+
+    ListenableFuture<Boolean> checkRelation(EntityId from, EntityId to, String relationType);
+
+    ListenableFuture<Boolean> saveRelation(EntityRelation relation);
+
+    ListenableFuture<Boolean> deleteRelation(EntityRelation relation);
+
+    ListenableFuture<Boolean> deleteRelation(EntityId from, EntityId to, String relationType);
+
+    ListenableFuture<Boolean> deleteEntityRelations(EntityId entity);
+
+    ListenableFuture<List<EntityRelation>> findByFrom(EntityId from);
+
+    ListenableFuture<List<EntityRelation>> findByFromAndType(EntityId from, String relationType);
+
+    ListenableFuture<List<EntityRelation>> findByTo(EntityId to);
+
+    ListenableFuture<List<EntityRelation>> findByToAndType(EntityId to, String relationType);
+
+    ListenableFuture<List<EntityRelation>> findByQuery(EntityRelationsQuery query);
+
+//    TODO: This method may be useful for some validations in the future
+//    ListenableFuture<Boolean> checkRecursiveRelation(EntityId from, EntityId to);
+
+}

dao/src/main/java/org/thingsboard/server/dao/relation/RelationsSearchParameters.java

@@ -0,0 +1,48 @@
+/**
+ * Copyright © 2016-2017 The Thingsboard Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.thingsboard.server.dao.relation;
+
+import lombok.AllArgsConstructor;
+import lombok.Data;
+import org.thingsboard.server.common.data.EntityType;
+import org.thingsboard.server.common.data.id.EntityId;
+import org.thingsboard.server.common.data.id.EntityIdFactory;
+
+import java.util.UUID;
+
+/**
+ * Created by ashvayka on 03.05.17.
+ */
+@Data
+@AllArgsConstructor
+public class RelationsSearchParameters {
+
+    private UUID rootId;
+    private EntityType rootType;
+    private EntitySearchDirection direction;
+    private int maxLevel = 1;
+
+    public RelationsSearchParameters(EntityId entityId, EntitySearchDirection direction, int maxLevel) {
+        this.rootId = entityId.getId();
+        this.rootType = entityId.getEntityType();
+        this.direction = direction;
+        this.maxLevel = maxLevel;
+    }
+
+    public EntityId getEntityId() {
+        return EntityIdFactory.getByTypeAndUuid(rootType, rootId);
+    }
+}

dao/src/main/java/org/thingsboard/server/dao/rule/BaseRuleService.java

@@ -17,10 +17,13 @@ package org.thingsboard.server.dao.rule;
 
 import com.fasterxml.jackson.databind.JsonNode;
 import com.fasterxml.jackson.databind.node.ArrayNode;
+import com.google.common.util.concurrent.Futures;
+import com.google.common.util.concurrent.ListenableFuture;
 import lombok.extern.slf4j.Slf4j;
 import org.apache.commons.lang3.StringUtils;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Service;
+import org.thingsboard.server.common.data.asset.Asset;
 import org.thingsboard.server.common.data.id.RuleId;
 import org.thingsboard.server.common.data.id.TenantId;
 import org.thingsboard.server.common.data.page.TextPageData;
@@ -31,9 +34,11 @@ import org.thingsboard.server.common.data.plugin.ComponentType;
 import org.thingsboard.server.common.data.plugin.PluginMetaData;
 import org.thingsboard.server.common.data.rule.RuleMetaData;
 import org.thingsboard.server.dao.component.ComponentDescriptorService;
+import org.thingsboard.server.dao.entity.BaseEntityService;
 import org.thingsboard.server.dao.exception.DataValidationException;
 import org.thingsboard.server.dao.exception.DatabaseException;
 import org.thingsboard.server.dao.exception.IncorrectParameterException;
+import org.thingsboard.server.dao.model.AssetEntity;
 import org.thingsboard.server.dao.model.RuleMetaDataEntity;
 import org.thingsboard.server.dao.plugin.PluginService;
 import org.thingsboard.server.dao.service.DataValidator;
@@ -53,7 +58,7 @@ import static org.thingsboard.server.dao.service.Validator.validatePageLink;
 
 @Service
 @Slf4j
-public class BaseRuleService implements RuleService {
+public class BaseRuleService extends BaseEntityService implements RuleService {
 
     private final TenantId systemTenantId = new TenantId(NULL_UUID);
 
@@ -166,6 +171,13 @@ public class BaseRuleService implements RuleService {
         return getData(ruleDao.findById(ruleId.getId()));
     }
 
+    @Override
+    public ListenableFuture<RuleMetaData> findRuleByIdAsync(RuleId ruleId) {
+        validateId(ruleId, "Incorrect rule id for search rule request.");
+        ListenableFuture<RuleMetaDataEntity> ruleEntity = ruleDao.findByIdAsync(ruleId.getId());
+        return Futures.transform(ruleEntity, (com.google.common.base.Function<? super RuleMetaDataEntity, ? extends RuleMetaData>) input -> getData(input));
+    }
+
     @Override
     public List<RuleMetaData> findPluginRules(String pluginToken) {
         List<RuleMetaDataEntity> ruleEntities = ruleDao.findRulesByPlugin(pluginToken);
@@ -235,6 +247,7 @@ public class BaseRuleService implements RuleService {
     @Override
     public void deleteRuleById(RuleId ruleId) {
         validateId(ruleId, "Incorrect rule id for delete rule request.");
+        deleteEntityRelations(ruleId);
         ruleDao.deleteById(ruleId);
     }
 

dao/src/main/java/org/thingsboard/server/dao/rule/RuleService.java

@@ -15,6 +15,7 @@
  */
 package org.thingsboard.server.dao.rule;
 
+import com.google.common.util.concurrent.ListenableFuture;
 import org.thingsboard.server.common.data.id.RuleId;
 import org.thingsboard.server.common.data.id.TenantId;
 import org.thingsboard.server.common.data.page.TextPageData;
@@ -29,6 +30,8 @@ public interface RuleService {
 
     RuleMetaData findRuleById(RuleId ruleId);
 
+    ListenableFuture<RuleMetaData> findRuleByIdAsync(RuleId ruleId);
+
     List<RuleMetaData> findPluginRules(String pluginToken);
 
     TextPageData<RuleMetaData> findSystemRules(TextPageLink pageLink);

dao/src/main/java/org/thingsboard/server/dao/service/Validator.java

@@ -15,6 +15,7 @@
  */
 package org.thingsboard.server.dao.service;
 
+import org.thingsboard.server.common.data.id.EntityId;
 import org.thingsboard.server.common.data.id.UUIDBased;
 import org.thingsboard.server.common.data.page.TextPageLink;
 import org.thingsboard.server.dao.exception.IncorrectParameterException;
@@ -24,6 +25,19 @@ import java.util.UUID;
 
 public class Validator {
 
+    /**
+     * This method validate <code>EntityId</code> entity id. If entity id is invalid than throw
+     * <code>IncorrectParameterException</code> exception
+     *
+     * @param entityId          the entityId
+     * @param errorMessage the error message for exception
+     */
+    public static void validateEntityId(EntityId entityId, String errorMessage) {
+        if (entityId == null || entityId.getId() == null) {
+            throw new IncorrectParameterException(errorMessage);
+        }
+    }
+
     /**
      * This method validate <code>String</code> string. If string is invalid than throw
      * <code>IncorrectParameterException</code> exception

dao/src/main/java/org/thingsboard/server/dao/tenant/TenantService.java

@@ -15,6 +15,7 @@
  */
 package org.thingsboard.server.dao.tenant;
 
+import com.google.common.util.concurrent.ListenableFuture;
 import org.thingsboard.server.common.data.Tenant;
 import org.thingsboard.server.common.data.id.TenantId;
 import org.thingsboard.server.common.data.page.TextPageData;
@@ -22,16 +23,16 @@ import org.thingsboard.server.common.data.page.TextPageLink;
 
 public interface TenantService {
 
-    public Tenant findTenantById(TenantId tenantId);
-    
-    public Tenant saveTenant(Tenant tenant);
+    Tenant findTenantById(TenantId tenantId);
+
+    ListenableFuture<Tenant> findTenantByIdAsync(TenantId customerId);
     
-    public void deleteTenant(TenantId tenantId);
+    Tenant saveTenant(Tenant tenant);
     
-    public TextPageData<Tenant> findTenants(TextPageLink pageLink);
+    void deleteTenant(TenantId tenantId);
     
-    //public TextPageData<Tenant> findTenantsByTitle(String title, PageLink pageLink);
+    TextPageData<Tenant> findTenants(TextPageLink pageLink);
     
-    public void deleteTenants();
+    void deleteTenants();
     
 }

dao/src/main/java/org/thingsboard/server/dao/tenant/TenantServiceImpl.java

@@ -17,11 +17,16 @@ package org.thingsboard.server.dao.tenant;
 
 import static org.thingsboard.server.dao.DaoUtil.convertDataList;
 import static org.thingsboard.server.dao.DaoUtil.getData;
+import static org.thingsboard.server.dao.service.Validator.validateId;
 
 import java.util.List;
 
+import com.google.common.base.Function;
+import com.google.common.util.concurrent.Futures;
+import com.google.common.util.concurrent.ListenableFuture;
 import lombok.extern.slf4j.Slf4j;
 import org.apache.commons.lang3.StringUtils;
+import org.thingsboard.server.common.data.Customer;
 import org.thingsboard.server.common.data.Tenant;
 import org.thingsboard.server.common.data.id.TenantId;
 import org.thingsboard.server.common.data.page.TextPageData;
@@ -29,15 +34,15 @@ import org.thingsboard.server.common.data.page.TextPageLink;
 import org.thingsboard.server.dao.customer.CustomerService;
 import org.thingsboard.server.dao.dashboard.DashboardService;
 import org.thingsboard.server.dao.device.DeviceService;
+import org.thingsboard.server.dao.entity.BaseEntityService;
 import org.thingsboard.server.dao.exception.DataValidationException;
+import org.thingsboard.server.dao.model.CustomerEntity;
 import org.thingsboard.server.dao.model.TenantEntity;
 import org.thingsboard.server.dao.plugin.PluginService;
 import org.thingsboard.server.dao.rule.RuleService;
 import org.thingsboard.server.dao.service.DataValidator;
 import org.thingsboard.server.dao.service.PaginatedRemover;
 import org.thingsboard.server.dao.user.UserService;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Service;
 import org.thingsboard.server.dao.service.Validator;
@@ -45,19 +50,19 @@ import org.thingsboard.server.dao.widget.WidgetsBundleService;
 
 @Service
 @Slf4j
-public class TenantServiceImpl implements TenantService {
-    
+public class TenantServiceImpl extends BaseEntityService implements TenantService {
+
     private static final String DEFAULT_TENANT_REGION = "Global";
 
     @Autowired
     private TenantDao tenantDao;
-    
+
     @Autowired
     private UserService userService;
-    
+
     @Autowired
     private CustomerService customerService;
-    
+
     @Autowired
     private DeviceService deviceService;
 
@@ -72,7 +77,7 @@ public class TenantServiceImpl implements TenantService {
 
     @Autowired
     private PluginService pluginService;
-    
+
     @Override
     public Tenant findTenantById(TenantId tenantId) {
         log.trace("Executing findTenantById [{}]", tenantId);
@@ -81,6 +86,14 @@ public class TenantServiceImpl implements TenantService {
         return getData(tenantEntity);
     }
 
+    @Override
+    public ListenableFuture<Tenant> findTenantByIdAsync(TenantId tenantId) {
+        log.trace("Executing TenantIdAsync [{}]", tenantId);
+        validateId(tenantId, "Incorrect tenantId " + tenantId);
+        ListenableFuture<TenantEntity> tenantEntity = tenantDao.findByIdAsync(tenantId.getId());
+        return Futures.transform(tenantEntity, (Function<? super TenantEntity, ? extends Tenant>) input -> getData(input));
+    }
+
     @Override
     public Tenant saveTenant(Tenant tenant) {
         log.trace("Executing saveTenant [{}]", tenant);
@@ -102,6 +115,7 @@ public class TenantServiceImpl implements TenantService {
         ruleService.deleteRulesByTenantId(tenantId);
         pluginService.deletePluginsByTenantId(tenantId);
         tenantDao.removeById(tenantId.getId());
+        deleteEntityRelations(tenantId);
     }
 
     @Override
@@ -131,10 +145,10 @@ public class TenantServiceImpl implements TenantService {
                     }
                 }
     };
-    
+
     private PaginatedRemover<String, TenantEntity> tenantsRemover =
             new PaginatedRemover<String, TenantEntity>() {
-        
+
         @Override
         protected List<TenantEntity> findEntities(String region, TextPageLink pageLink) {
             return tenantDao.findTenantsByRegion(region, pageLink);

dao/src/main/java/org/thingsboard/server/dao/timeseries/BaseTimeseriesDao.java

@@ -26,6 +26,7 @@ import com.google.common.util.concurrent.ListenableFuture;
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.beans.factory.annotation.Value;
 import org.springframework.stereotype.Component;
+import org.thingsboard.server.common.data.id.EntityId;
 import org.thingsboard.server.common.data.kv.*;
 import org.thingsboard.server.common.data.kv.DataType;
 import org.thingsboard.server.dao.AbstractAsyncDao;
@@ -94,8 +95,8 @@ public class BaseTimeseriesDao extends AbstractAsyncDao implements TimeseriesDao
     }
 
     @Override
-    public ListenableFuture<List<TsKvEntry>> findAllAsync(String entityType, UUID entityId, List<TsKvQuery> queries) {
-        List<ListenableFuture<List<TsKvEntry>>> futures = queries.stream().map(query -> findAllAsync(entityType, entityId, query)).collect(Collectors.toList());
+    public ListenableFuture<List<TsKvEntry>> findAllAsync(EntityId entityId, List<TsKvQuery> queries) {
+        List<ListenableFuture<List<TsKvEntry>>> futures = queries.stream().map(query -> findAllAsync(entityId, query)).collect(Collectors.toList());
         return Futures.transform(Futures.allAsList(futures), new Function<List<List<TsKvEntry>>, List<TsKvEntry>>() {
             @Nullable
             @Override
@@ -108,9 +109,9 @@ public class BaseTimeseriesDao extends AbstractAsyncDao implements TimeseriesDao
     }
 
 
-    private ListenableFuture<List<TsKvEntry>> findAllAsync(String entityType, UUID entityId, TsKvQuery query) {
+    private ListenableFuture<List<TsKvEntry>> findAllAsync(EntityId entityId, TsKvQuery query) {
         if (query.getAggregation() == Aggregation.NONE) {
-            return findAllAsyncWithLimit(entityType, entityId, query);
+            return findAllAsyncWithLimit(entityId, query);
         } else {
             long step = Math.max(query.getInterval(), minAggregationStepMs);
             long stepTs = query.getStartTs();
@@ -119,7 +120,7 @@ public class BaseTimeseriesDao extends AbstractAsyncDao implements TimeseriesDao
                 long startTs = stepTs;
                 long endTs = stepTs + step;
                 TsKvQuery subQuery = new BaseTsKvQuery(query.getKey(), startTs, endTs, step, 1, query.getAggregation());
-                futures.add(findAndAggregateAsync(entityType, entityId, subQuery, toPartitionTs(startTs), toPartitionTs(endTs)));
+                futures.add(findAndAggregateAsync(entityId, subQuery, toPartitionTs(startTs), toPartitionTs(endTs)));
                 stepTs = endTs;
             }
             ListenableFuture<List<Optional<TsKvEntry>>> future = Futures.allAsList(futures);
@@ -133,11 +134,11 @@ public class BaseTimeseriesDao extends AbstractAsyncDao implements TimeseriesDao
         }
     }
 
-    private ListenableFuture<List<TsKvEntry>> findAllAsyncWithLimit(String entityType, UUID entityId, TsKvQuery query) {
+    private ListenableFuture<List<TsKvEntry>> findAllAsyncWithLimit(EntityId entityId, TsKvQuery query) {
         long minPartition = toPartitionTs(query.getStartTs());
         long maxPartition = toPartitionTs(query.getEndTs());
 
-        ResultSetFuture partitionsFuture = fetchPartitions(entityType, entityId, query.getKey(), minPartition, maxPartition);
+        ResultSetFuture partitionsFuture = fetchPartitions(entityId, query.getKey(), minPartition, maxPartition);
 
         final SimpleListenableFuture<List<TsKvEntry>> resultFuture = new SimpleListenableFuture<>();
         final ListenableFuture<List<Long>> partitionsListFuture = Futures.transform(partitionsFuture, getPartitionsArrayFunction(), readResultsProcessingExecutor);
@@ -145,13 +146,13 @@ public class BaseTimeseriesDao extends AbstractAsyncDao implements TimeseriesDao
         Futures.addCallback(partitionsListFuture, new FutureCallback<List<Long>>() {
             @Override
             public void onSuccess(@Nullable List<Long> partitions) {
-                TsKvQueryCursor cursor = new TsKvQueryCursor(entityType, entityId, query, partitions);
+                TsKvQueryCursor cursor = new TsKvQueryCursor(entityId.getEntityType().name(), entityId.getId(), query, partitions);
                 findAllAsyncSequentiallyWithLimit(cursor, resultFuture);
             }
 
             @Override
             public void onFailure(Throwable t) {
-                log.error("[{}][{}] Failed to fetch partitions for interval {}-{}", entityType, entityId, minPartition, maxPartition, t);
+                log.error("[{}][{}] Failed to fetch partitions for interval {}-{}", entityId.getEntityType().name(), entityId.getId(), minPartition, maxPartition, t);
             }
         }, readResultsProcessingExecutor);
 
@@ -187,19 +188,19 @@ public class BaseTimeseriesDao extends AbstractAsyncDao implements TimeseriesDao
         }
     }
 
-    private ListenableFuture<Optional<TsKvEntry>> findAndAggregateAsync(String entityType, UUID entityId, TsKvQuery query, long minPartition, long maxPartition) {
+    private ListenableFuture<Optional<TsKvEntry>> findAndAggregateAsync(EntityId entityId, TsKvQuery query, long minPartition, long maxPartition) {
         final Aggregation aggregation = query.getAggregation();
         final String key = query.getKey();
         final long startTs = query.getStartTs();
         final long endTs = query.getEndTs();
         final long ts = startTs + (endTs - startTs) / 2;
 
-        ResultSetFuture partitionsFuture = fetchPartitions(entityType, entityId, key, minPartition, maxPartition);
+        ResultSetFuture partitionsFuture = fetchPartitions(entityId, key, minPartition, maxPartition);
 
         ListenableFuture<List<Long>> partitionsListFuture = Futures.transform(partitionsFuture, getPartitionsArrayFunction(), readResultsProcessingExecutor);
 
         ListenableFuture<List<ResultSet>> aggregationChunks = Futures.transform(partitionsListFuture,
-                getFetchChunksAsyncFunction(entityType, entityId, key, aggregation, startTs, endTs), readResultsProcessingExecutor);
+                getFetchChunksAsyncFunction(entityId, key, aggregation, startTs, endTs), readResultsProcessingExecutor);
 
         return Futures.transform(aggregationChunks, new AggregatePartitionsFunction(aggregation, key, ts), readResultsProcessingExecutor);
     }
@@ -209,21 +210,21 @@ public class BaseTimeseriesDao extends AbstractAsyncDao implements TimeseriesDao
                 .map(row -> row.getLong(ModelConstants.PARTITION_COLUMN)).collect(Collectors.toList());
     }
 
-    private AsyncFunction<List<Long>, List<ResultSet>> getFetchChunksAsyncFunction(String entityType, UUID entityId, String key, Aggregation aggregation, long startTs, long endTs) {
+    private AsyncFunction<List<Long>, List<ResultSet>> getFetchChunksAsyncFunction(EntityId entityId, String key, Aggregation aggregation, long startTs, long endTs) {
         return partitions -> {
             try {
                 PreparedStatement proto = getFetchStmt(aggregation);
                 List<ResultSetFuture> futures = new ArrayList<>(partitions.size());
                 for (Long partition : partitions) {
-                    log.trace("Fetching data for partition [{}] for entityType {} and entityId {}", partition, entityType, entityId);
+                    log.trace("Fetching data for partition [{}] for entityType {} and entityId {}", partition, entityId.getEntityType(), entityId.getId());
                     BoundStatement stmt = proto.bind();
-                    stmt.setString(0, entityType);
-                    stmt.setUUID(1, entityId);
+                    stmt.setString(0, entityId.getEntityType().name());
+                    stmt.setUUID(1, entityId.getId());
                     stmt.setString(2, key);
                     stmt.setLong(3, partition);
                     stmt.setLong(4, startTs);
                     stmt.setLong(5, endTs);
-                    log.debug("Generated query [{}] for entityType {} and entityId {}", stmt, entityType, entityId);
+                    log.debug("Generated query [{}] for entityType {} and entityId {}", stmt, entityId.getEntityType(), entityId.getId());
                     futures.add(executeAsyncRead(stmt));
                 }
                 return Futures.allAsList(futures);
@@ -235,30 +236,30 @@ public class BaseTimeseriesDao extends AbstractAsyncDao implements TimeseriesDao
     }
 
     @Override
-    public ResultSetFuture findLatest(String entityType, UUID entityId, String key) {
+    public ResultSetFuture findLatest(EntityId entityId, String key) {
         BoundStatement stmt = getFindLatestStmt().bind();
-        stmt.setString(0, entityType);
-        stmt.setUUID(1, entityId);
+        stmt.setString(0, entityId.getEntityType().name());
+        stmt.setUUID(1, entityId.getId());
         stmt.setString(2, key);
-        log.debug("Generated query [{}] for entityType {} and entityId {}", stmt, entityType, entityId);
+        log.debug("Generated query [{}] for entityType {} and entityId {}", stmt, entityId.getEntityType(), entityId.getId());
         return executeAsyncRead(stmt);
     }
 
     @Override
-    public ResultSetFuture findAllLatest(String entityType, UUID entityId) {
+    public ResultSetFuture findAllLatest(EntityId entityId) {
         BoundStatement stmt = getFindAllLatestStmt().bind();
-        stmt.setString(0, entityType);
-        stmt.setUUID(1, entityId);
-        log.debug("Generated query [{}] for entityType {} and entityId {}", stmt, entityType, entityId);
+        stmt.setString(0, entityId.getEntityType().name());
+        stmt.setUUID(1, entityId.getId());
+        log.debug("Generated query [{}] for entityType {} and entityId {}", stmt, entityId.getEntityType(), entityId.getId());
         return executeAsyncRead(stmt);
     }
 
     @Override
-    public ResultSetFuture save(String entityType, UUID entityId, long partition, TsKvEntry tsKvEntry) {
+    public ResultSetFuture save(EntityId entityId, long partition, TsKvEntry tsKvEntry) {
         DataType type = tsKvEntry.getDataType();
         BoundStatement stmt = getSaveStmt(type).bind()
-                .setString(0, entityType)
-                .setUUID(1, entityId)
+                .setString(0, entityId.getEntityType().name())
+                .setUUID(1, entityId.getId())
                 .setString(2, tsKvEntry.getKey())
                 .setLong(3, partition)
                 .setLong(4, tsKvEntry.getTs());
@@ -267,11 +268,11 @@ public class BaseTimeseriesDao extends AbstractAsyncDao implements TimeseriesDao
     }
 
     @Override
-    public ResultSetFuture saveLatest(String entityType, UUID entityId, TsKvEntry tsKvEntry) {
+    public ResultSetFuture saveLatest(EntityId entityId, TsKvEntry tsKvEntry) {
         DataType type = tsKvEntry.getDataType();
         BoundStatement stmt = getLatestStmt(type).bind()
-                .setString(0, entityType)
-                .setUUID(1, entityId)
+                .setString(0, entityId.getEntityType().name())
+                .setUUID(1, entityId.getId())
                 .setString(2, tsKvEntry.getKey())
                 .setLong(3, tsKvEntry.getTs());
         addValue(tsKvEntry, stmt, 4);
@@ -279,11 +280,11 @@ public class BaseTimeseriesDao extends AbstractAsyncDao implements TimeseriesDao
     }
 
     @Override
-    public ResultSetFuture savePartition(String entityType, UUID entityId, long partition, String key) {
-        log.debug("Saving partition {} for the entity [{}-{}] and key {}", partition, entityType, entityId, key);
+    public ResultSetFuture savePartition(EntityId entityId, long partition, String key) {
+        log.debug("Saving partition {} for the entity [{}-{}] and key {}", partition, entityId.getEntityType(), entityId.getId(), key);
         return executeAsyncWrite(getPartitionInsertStmt().bind()
-                .setString(0, entityType)
-                .setUUID(1, entityId)
+                .setString(0, entityId.getEntityType().name())
+                .setUUID(1, entityId.getId())
                 .setLong(2, partition)
                 .setString(3, key));
     }
@@ -339,9 +340,9 @@ public class BaseTimeseriesDao extends AbstractAsyncDao implements TimeseriesDao
      * Select existing partitions from the table
      * <code>{@link ModelConstants#TS_KV_PARTITIONS_CF}</code> for the given entity
      */
-    private ResultSetFuture fetchPartitions(String entityType, UUID entityId, String key, long minPartition, long maxPartition) {
-        Select.Where select = QueryBuilder.select(ModelConstants.PARTITION_COLUMN).from(ModelConstants.TS_KV_PARTITIONS_CF).where(eq(ModelConstants.ENTITY_TYPE_COLUMN, entityType))
-                .and(eq(ModelConstants.ENTITY_ID_COLUMN, entityId)).and(eq(ModelConstants.KEY_COLUMN, key));
+    private ResultSetFuture fetchPartitions(EntityId entityId, String key, long minPartition, long maxPartition) {
+        Select.Where select = QueryBuilder.select(ModelConstants.PARTITION_COLUMN).from(ModelConstants.TS_KV_PARTITIONS_CF).where(eq(ModelConstants.ENTITY_TYPE_COLUMN, entityId.getEntityType().name()))
+                .and(eq(ModelConstants.ENTITY_ID_COLUMN, entityId.getId())).and(eq(ModelConstants.KEY_COLUMN, key));
         select.and(QueryBuilder.gte(ModelConstants.PARTITION_COLUMN, minPartition));
         select.and(QueryBuilder.lte(ModelConstants.PARTITION_COLUMN, maxPartition));
         return executeAsyncRead(select);

dao/src/main/java/org/thingsboard/server/dao/timeseries/BaseTimeseriesService.java

@@ -23,6 +23,7 @@ import com.google.common.collect.Lists;
 import com.google.common.util.concurrent.Futures;
 import com.google.common.util.concurrent.ListenableFuture;
 import lombok.extern.slf4j.Slf4j;
+import org.thingsboard.server.common.data.id.EntityId;
 import org.thingsboard.server.common.data.id.UUIDBased;
 import org.thingsboard.server.common.data.kv.BaseTsKvQuery;
 import org.thingsboard.server.common.data.kv.TsKvEntry;
@@ -59,30 +60,30 @@ public class BaseTimeseriesService implements TimeseriesService {
     private TimeseriesDao timeseriesDao;
 
     @Override
-    public ListenableFuture<List<TsKvEntry>> findAll(String entityType, UUIDBased entityId, List<TsKvQuery> queries) {
-        validate(entityType, entityId);
+    public ListenableFuture<List<TsKvEntry>> findAll(EntityId entityId, List<TsKvQuery> queries) {
+        validate(entityId);
         queries.forEach(query -> validate(query));
-        return timeseriesDao.findAllAsync(entityType, entityId.getId(), queries);
+        return timeseriesDao.findAllAsync(entityId, queries);
     }
 
     @Override
-    public ListenableFuture<List<ResultSet>> findLatest(String entityType, UUIDBased entityId, Collection<String> keys) {
-        validate(entityType, entityId);
+    public ListenableFuture<List<ResultSet>> findLatest(EntityId entityId, Collection<String> keys) {
+        validate(entityId);
         List<ResultSetFuture> futures = Lists.newArrayListWithExpectedSize(keys.size());
         keys.forEach(key -> Validator.validateString(key, "Incorrect key " + key));
-        keys.forEach(key -> futures.add(timeseriesDao.findLatest(entityType, entityId.getId(), key)));
+        keys.forEach(key -> futures.add(timeseriesDao.findLatest(entityId, key)));
         return Futures.allAsList(futures);
     }
 
     @Override
-    public ResultSetFuture findAllLatest(String entityType, UUIDBased entityId) {
-        validate(entityType, entityId);
-        return timeseriesDao.findAllLatest(entityType, entityId.getId());
+    public ResultSetFuture findAllLatest(EntityId entityId) {
+        validate(entityId);
+        return timeseriesDao.findAllLatest(entityId);
     }
 
     @Override
-    public ListenableFuture<List<ResultSet>> save(String entityType, UUIDBased entityId, TsKvEntry tsKvEntry) {
-        validate(entityType, entityId);
+    public ListenableFuture<List<ResultSet>> save(EntityId entityId, TsKvEntry tsKvEntry) {
+        validate(entityId);
         if (tsKvEntry == null) {
             throw new IncorrectParameterException("Key value entry can't be null");
         }
@@ -90,13 +91,13 @@ public class BaseTimeseriesService implements TimeseriesService {
         long partitionTs = timeseriesDao.toPartitionTs(tsKvEntry.getTs());
 
         List<ResultSetFuture> futures = Lists.newArrayListWithExpectedSize(INSERTS_PER_ENTRY);
-        saveAndRegisterFutures(futures, entityType, tsKvEntry, uid, partitionTs);
+        saveAndRegisterFutures(futures, entityId, tsKvEntry, partitionTs);
         return Futures.allAsList(futures);
     }
 
     @Override
-    public ListenableFuture<List<ResultSet>> save(String entityType, UUIDBased entityId, List<TsKvEntry> tsKvEntries) {
-        validate(entityType, entityId);
+    public ListenableFuture<List<ResultSet>> save(EntityId entityId, List<TsKvEntry> tsKvEntries) {
+        validate(entityId);
         List<ResultSetFuture> futures = Lists.newArrayListWithExpectedSize(tsKvEntries.size() * INSERTS_PER_ENTRY);
         for (TsKvEntry tsKvEntry : tsKvEntries) {
             if (tsKvEntry == null) {
@@ -104,7 +105,7 @@ public class BaseTimeseriesService implements TimeseriesService {
             }
             UUID uid = entityId.getId();
             long partitionTs = timeseriesDao.toPartitionTs(tsKvEntry.getTs());
-            saveAndRegisterFutures(futures, entityType, tsKvEntry, uid, partitionTs);
+            saveAndRegisterFutures(futures, entityId, tsKvEntry, partitionTs);
         }
         return Futures.allAsList(futures);
     }
@@ -119,15 +120,14 @@ public class BaseTimeseriesService implements TimeseriesService {
         return timeseriesDao.convertResultToTsKvEntryList(rs.all());
     }
 
-    private void saveAndRegisterFutures(List<ResultSetFuture> futures, String entityType, TsKvEntry tsKvEntry, UUID uid, long partitionTs) {
-        futures.add(timeseriesDao.savePartition(entityType, uid, partitionTs, tsKvEntry.getKey()));
-        futures.add(timeseriesDao.saveLatest(entityType, uid, tsKvEntry));
-        futures.add(timeseriesDao.save(entityType, uid, partitionTs, tsKvEntry));
+    private void saveAndRegisterFutures(List<ResultSetFuture> futures, EntityId entityId, TsKvEntry tsKvEntry, long partitionTs) {
+        futures.add(timeseriesDao.savePartition(entityId, partitionTs, tsKvEntry.getKey()));
+        futures.add(timeseriesDao.saveLatest(entityId, tsKvEntry));
+        futures.add(timeseriesDao.save(entityId, partitionTs, tsKvEntry));
     }
 
-    private static void validate(String entityType, UUIDBased entityId) {
-        Validator.validateString(entityType, "Incorrect entityType " + entityType);
-        Validator.validateId(entityId, "Incorrect entityId " + entityId);
+    private static void validate(EntityId entityId) {
+        Validator.validateEntityId(entityId, "Incorrect entityId " + entityId);
     }
 
     private static void validate(TsKvQuery query) {

dao/src/main/java/org/thingsboard/server/dao/timeseries/TimeseriesDao.java

@@ -18,6 +18,7 @@ package org.thingsboard.server.dao.timeseries;
 import com.datastax.driver.core.ResultSetFuture;
 import com.datastax.driver.core.Row;
 import com.google.common.util.concurrent.ListenableFuture;
+import org.thingsboard.server.common.data.id.EntityId;
 import org.thingsboard.server.common.data.kv.TsKvEntry;
 import org.thingsboard.server.common.data.kv.TsKvQuery;
 
@@ -33,17 +34,17 @@ public interface TimeseriesDao {
 
     long toPartitionTs(long ts);
 
-    ListenableFuture<List<TsKvEntry>> findAllAsync(String entityType, UUID entityId, List<TsKvQuery> queries);
+    ListenableFuture<List<TsKvEntry>> findAllAsync(EntityId entityId, List<TsKvQuery> queries);
 
-    ResultSetFuture findLatest(String entityType, UUID entityId, String key);
+    ResultSetFuture findLatest(EntityId entityId, String key);
 
-    ResultSetFuture findAllLatest(String entityType, UUID entityId);
+    ResultSetFuture findAllLatest(EntityId entityId);
 
-    ResultSetFuture save(String entityType, UUID entityId, long partition, TsKvEntry tsKvEntry);
+    ResultSetFuture save(EntityId entityId, long partition, TsKvEntry tsKvEntry);
 
-    ResultSetFuture savePartition(String entityType, UUID entityId, long partition, String key);
+    ResultSetFuture savePartition(EntityId entityId, long partition, String key);
 
-    ResultSetFuture saveLatest(String entityType, UUID entityId, TsKvEntry tsKvEntry);
+    ResultSetFuture saveLatest(EntityId entityId, TsKvEntry tsKvEntry);
 
     TsKvEntry convertResultToTsKvEntry(Row row);
 

dao/src/main/java/org/thingsboard/server/dao/timeseries/TimeseriesService.java

@@ -20,6 +20,7 @@ import com.datastax.driver.core.ResultSetFuture;
 import com.datastax.driver.core.Row;
 import com.google.common.util.concurrent.ListenableFuture;
 import org.thingsboard.server.common.data.id.DeviceId;
+import org.thingsboard.server.common.data.id.EntityId;
 import org.thingsboard.server.common.data.id.UUIDBased;
 import org.thingsboard.server.common.data.kv.TsKvEntry;
 import org.thingsboard.server.common.data.kv.TsKvQuery;
@@ -33,15 +34,15 @@ import java.util.Set;
  */
 public interface TimeseriesService {
 
-    ListenableFuture<List<TsKvEntry>> findAll(String entityType, UUIDBased entityId, List<TsKvQuery> queries);
+    ListenableFuture<List<TsKvEntry>> findAll(EntityId entityId, List<TsKvQuery> queries);
 
-    ListenableFuture<List<ResultSet>> findLatest(String entityType, UUIDBased entityId, Collection<String> keys);
+    ListenableFuture<List<ResultSet>> findLatest(EntityId entityId, Collection<String> keys);
 
-    ResultSetFuture findAllLatest(String entityType, UUIDBased entityId);
+    ResultSetFuture findAllLatest(EntityId entityId);
 
-    ListenableFuture<List<ResultSet>> save(String entityType, UUIDBased entityId, TsKvEntry tsKvEntry);
+    ListenableFuture<List<ResultSet>> save(EntityId entityId, TsKvEntry tsKvEntry);
 
-    ListenableFuture<List<ResultSet>> save(String entityType, UUIDBased entityId, List<TsKvEntry> tsKvEntry);
+    ListenableFuture<List<ResultSet>> save(EntityId entityId, List<TsKvEntry> tsKvEntry);
 
     TsKvEntry convertResultToTsKvEntry(Row row);
 

dao/src/main/java/org/thingsboard/server/dao/user/UserServiceImpl.java

@@ -35,20 +35,19 @@ import org.thingsboard.server.common.data.page.TextPageLink;
 import org.thingsboard.server.common.data.security.Authority;
 import org.thingsboard.server.common.data.security.UserCredentials;
 import org.thingsboard.server.dao.customer.CustomerDao;
+import org.thingsboard.server.dao.entity.BaseEntityService;
 import org.thingsboard.server.dao.exception.DataValidationException;
 import org.thingsboard.server.dao.exception.IncorrectParameterException;
 import org.thingsboard.server.dao.model.*;
 import org.thingsboard.server.dao.service.DataValidator;
 import org.thingsboard.server.dao.service.PaginatedRemover;
 import org.thingsboard.server.dao.tenant.TenantDao;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Service;
 
 @Service
 @Slf4j
-public class UserServiceImpl implements UserService {
+public class UserServiceImpl extends BaseEntityService implements UserService {
 
     @Autowired
     private UserDao userDao;
@@ -169,6 +168,7 @@ public class UserServiceImpl implements UserService {
         validateId(userId, "Incorrect userId " + userId);
         UserCredentialsEntity userCredentialsEntity = userCredentialsDao.findByUserId(userId.getId());
         userCredentialsDao.removeById(userCredentialsEntity.getId());
+        deleteEntityRelations(userId);
         userDao.removeById(userId.getId());
     }
 

dao/src/main/resources/schema.cql

@@ -202,6 +202,73 @@ CREATE MATERIALIZED VIEW IF NOT EXISTS thingsboard.device_credentials_by_credent
 	WHERE credentials_id IS NOT NULL AND id IS NOT NULL
 	PRIMARY KEY ( credentials_id, id );
 
+
+CREATE TABLE IF NOT EXISTS thingsboard.asset (
+	id timeuuid,
+	tenant_id timeuuid,
+	customer_id timeuuid,
+	name text,
+	type text,
+	search_text text,
+	additional_info text,
+	PRIMARY KEY (id, tenant_id, customer_id)
+);
+
+CREATE MATERIALIZED VIEW IF NOT EXISTS thingsboard.asset_by_tenant_and_name AS
+	SELECT *
+	from thingsboard.asset
+	WHERE tenant_id IS NOT NULL AND customer_id IS NOT NULL AND name IS NOT NULL AND id IS NOT NULL
+	PRIMARY KEY ( tenant_id, name, id, customer_id)
+	WITH CLUSTERING ORDER BY ( name ASC, id DESC, customer_id DESC);
+
+CREATE MATERIALIZED VIEW IF NOT EXISTS thingsboard.asset_by_tenant_and_search_text AS
+	SELECT *
+	from thingsboard.asset
+	WHERE tenant_id IS NOT NULL AND customer_id IS NOT NULL AND search_text IS NOT NULL AND id IS NOT NULL
+	PRIMARY KEY ( tenant_id, search_text, id, customer_id)
+	WITH CLUSTERING ORDER BY ( search_text ASC, id DESC, customer_id DESC);
+
+CREATE MATERIALIZED VIEW IF NOT EXISTS thingsboard.asset_by_customer_and_search_text AS
+	SELECT *
+	from thingsboard.asset
+	WHERE tenant_id IS NOT NULL AND customer_id IS NOT NULL AND search_text IS NOT NULL AND id IS NOT NULL
+	PRIMARY KEY ( customer_id, tenant_id, search_text, id )
+	WITH CLUSTERING ORDER BY ( tenant_id DESC, search_text ASC, id DESC );
+
+CREATE TABLE IF NOT EXISTS thingsboard.alarm (
+	id timeuuid,
+	tenant_id timeuuid,
+	type text,
+	originator_id timeuuid,
+	originator_type text,
+    severity text,
+    status text,
+	start_ts bigint,
+	end_ts bigint,
+	ack_ts bigint,
+	clear_ts bigint,
+	details text,
+	propagate boolean,
+	PRIMARY KEY ((tenant_id, originator_id, originator_type), type, id)
+);
+
+CREATE TABLE IF NOT EXISTS thingsboard.relation (
+	from_id timeuuid,
+	from_type text,
+	to_id timeuuid,
+	to_type text,
+	relation_type text,
+	additional_info text,
+	PRIMARY KEY ((from_id, from_type), relation_type, to_id, to_type)
+);
+
+CREATE MATERIALIZED VIEW IF NOT EXISTS thingsboard.reverse_relation AS
+SELECT *
+from thingsboard.relation
+WHERE from_id IS NOT NULL AND from_type IS NOT NULL AND relation_type IS NOT NULL AND to_id IS NOT NULL AND to_type IS NOT NULL
+PRIMARY KEY ((to_id, to_type), relation_type, from_id, from_type)
+WITH CLUSTERING ORDER BY ( relation_type ASC, from_id ASC, from_type ASC);
+
 CREATE TABLE IF NOT EXISTS thingsboard.widgets_bundle (
     id timeuuid,
     tenant_id timeuuid,

dao/src/test/java/org/thingsboard/server/dao/service/AbstractServiceTest.java

@@ -47,6 +47,7 @@ import org.thingsboard.server.dao.device.DeviceCredentialsService;
 import org.thingsboard.server.dao.device.DeviceService;
 import org.thingsboard.server.dao.event.EventService;
 import org.thingsboard.server.dao.plugin.PluginService;
+import org.thingsboard.server.dao.relation.RelationService;
 import org.thingsboard.server.dao.rule.RuleService;
 import org.thingsboard.server.dao.settings.AdminSettingsService;
 import org.thingsboard.server.dao.tenant.TenantService;
@@ -110,6 +111,9 @@ public abstract class AbstractServiceTest {
     @Autowired
     protected EventService eventService;
 
+    @Autowired
+    protected RelationService relationService;
+
     @Autowired
     private ComponentDescriptorService componentDescriptorService;
 

dao/src/test/java/org/thingsboard/server/dao/service/RelationServiceImplTest.java

@@ -0,0 +1,283 @@
+/**
+ * Copyright © 2016-2017 The Thingsboard Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.thingsboard.server.dao.service;
+
+import com.datastax.driver.core.utils.UUIDs;
+import com.google.common.util.concurrent.ListenableFuture;
+import org.junit.After;
+import org.junit.Assert;
+import org.junit.Before;
+import org.junit.Test;
+import org.thingsboard.server.common.data.EntityType;
+import org.thingsboard.server.common.data.asset.Asset;
+import org.thingsboard.server.common.data.id.AssetId;
+import org.thingsboard.server.common.data.id.DeviceId;
+import org.thingsboard.server.common.data.relation.EntityRelation;
+import org.thingsboard.server.dao.exception.DataValidationException;
+import org.thingsboard.server.dao.relation.EntityRelationsQuery;
+import org.thingsboard.server.dao.relation.EntitySearchDirection;
+import org.thingsboard.server.dao.relation.EntityTypeFilter;
+import org.thingsboard.server.dao.relation.RelationsSearchParameters;
+
+import java.util.Collections;
+import java.util.List;
+import java.util.concurrent.ExecutionException;
+
+public class RelationServiceImplTest extends AbstractServiceTest {
+
+    @Before
+    public void before() {
+    }
+
+    @After
+    public void after() {
+    }
+
+    @Test
+    public void testSaveRelation() throws ExecutionException, InterruptedException {
+        AssetId parentId = new AssetId(UUIDs.timeBased());
+        AssetId childId = new AssetId(UUIDs.timeBased());
+
+        EntityRelation relation = new EntityRelation(parentId, childId, EntityRelation.CONTAINS_TYPE);
+
+        Assert.assertTrue(saveRelation(relation));
+
+        Assert.assertTrue(relationService.checkRelation(parentId, childId, EntityRelation.CONTAINS_TYPE).get());
+
+        Assert.assertFalse(relationService.checkRelation(parentId, childId, "NOT_EXISTING_TYPE").get());
+
+        Assert.assertFalse(relationService.checkRelation(childId, parentId, EntityRelation.CONTAINS_TYPE).get());
+
+        Assert.assertFalse(relationService.checkRelation(childId, parentId, "NOT_EXISTING_TYPE").get());
+    }
+
+    @Test
+    public void testDeleteRelation() throws ExecutionException, InterruptedException {
+        AssetId parentId = new AssetId(UUIDs.timeBased());
+        AssetId childId = new AssetId(UUIDs.timeBased());
+        AssetId subChildId = new AssetId(UUIDs.timeBased());
+
+        EntityRelation relationA = new EntityRelation(parentId, childId, EntityRelation.CONTAINS_TYPE);
+        EntityRelation relationB = new EntityRelation(childId, subChildId, EntityRelation.CONTAINS_TYPE);
+
+        saveRelation(relationA);
+        saveRelation(relationB);
+
+        Assert.assertTrue(relationService.deleteRelation(relationA).get());
+
+        Assert.assertFalse(relationService.checkRelation(parentId, childId, EntityRelation.CONTAINS_TYPE).get());
+
+        Assert.assertTrue(relationService.checkRelation(childId, subChildId, EntityRelation.CONTAINS_TYPE).get());
+
+        Assert.assertTrue(relationService.deleteRelation(childId, subChildId, EntityRelation.CONTAINS_TYPE).get());
+    }
+
+    @Test
+    public void testDeleteEntityRelations() throws ExecutionException, InterruptedException {
+        AssetId parentId = new AssetId(UUIDs.timeBased());
+        AssetId childId = new AssetId(UUIDs.timeBased());
+        AssetId subChildId = new AssetId(UUIDs.timeBased());
+
+        EntityRelation relationA = new EntityRelation(parentId, childId, EntityRelation.CONTAINS_TYPE);
+        EntityRelation relationB = new EntityRelation(childId, subChildId, EntityRelation.CONTAINS_TYPE);
+
+        saveRelation(relationA);
+        saveRelation(relationB);
+
+        Assert.assertTrue(relationService.deleteEntityRelations(childId).get());
+
+        Assert.assertFalse(relationService.checkRelation(parentId, childId, EntityRelation.CONTAINS_TYPE).get());
+
+        Assert.assertFalse(relationService.checkRelation(childId, subChildId, EntityRelation.CONTAINS_TYPE).get());
+    }
+
+    @Test
+    public void testFindFrom() throws ExecutionException, InterruptedException {
+        AssetId parentA = new AssetId(UUIDs.timeBased());
+        AssetId parentB = new AssetId(UUIDs.timeBased());
+        AssetId childA = new AssetId(UUIDs.timeBased());
+        AssetId childB = new AssetId(UUIDs.timeBased());
+
+        EntityRelation relationA1 = new EntityRelation(parentA, childA, EntityRelation.CONTAINS_TYPE);
+        EntityRelation relationA2 = new EntityRelation(parentA, childB, EntityRelation.CONTAINS_TYPE);
+
+        EntityRelation relationB1 = new EntityRelation(parentB, childA, EntityRelation.MANAGES_TYPE);
+        EntityRelation relationB2 = new EntityRelation(parentB, childB, EntityRelation.MANAGES_TYPE);
+
+        saveRelation(relationA1);
+        saveRelation(relationA2);
+
+        saveRelation(relationB1);
+        saveRelation(relationB2);
+
+        List<EntityRelation> relations = relationService.findByFrom(parentA).get();
+        Assert.assertEquals(2, relations.size());
+        for (EntityRelation relation : relations) {
+            Assert.assertEquals(EntityRelation.CONTAINS_TYPE, relation.getType());
+            Assert.assertEquals(parentA, relation.getFrom());
+            Assert.assertTrue(childA.equals(relation.getTo()) || childB.equals(relation.getTo()));
+        }
+
+        relations = relationService.findByFromAndType(parentA, EntityRelation.CONTAINS_TYPE).get();
+        Assert.assertEquals(2, relations.size());
+
+        relations = relationService.findByFromAndType(parentA, EntityRelation.MANAGES_TYPE).get();
+        Assert.assertEquals(0, relations.size());
+
+        relations = relationService.findByFrom(parentB).get();
+        Assert.assertEquals(2, relations.size());
+        for (EntityRelation relation : relations) {
+            Assert.assertEquals(EntityRelation.MANAGES_TYPE, relation.getType());
+            Assert.assertEquals(parentB, relation.getFrom());
+            Assert.assertTrue(childA.equals(relation.getTo()) || childB.equals(relation.getTo()));
+        }
+
+        relations = relationService.findByFromAndType(parentB, EntityRelation.CONTAINS_TYPE).get();
+        Assert.assertEquals(0, relations.size());
+
+        relations = relationService.findByFromAndType(parentB, EntityRelation.CONTAINS_TYPE).get();
+        Assert.assertEquals(0, relations.size());
+    }
+
+    private Boolean saveRelation(EntityRelation relationA1) throws ExecutionException, InterruptedException {
+        return relationService.saveRelation(relationA1).get();
+    }
+
+    @Test
+    public void testFindTo() throws ExecutionException, InterruptedException {
+        AssetId parentA = new AssetId(UUIDs.timeBased());
+        AssetId parentB = new AssetId(UUIDs.timeBased());
+        AssetId childA = new AssetId(UUIDs.timeBased());
+        AssetId childB = new AssetId(UUIDs.timeBased());
+
+        EntityRelation relationA1 = new EntityRelation(parentA, childA, EntityRelation.CONTAINS_TYPE);
+        EntityRelation relationA2 = new EntityRelation(parentA, childB, EntityRelation.CONTAINS_TYPE);
+
+        EntityRelation relationB1 = new EntityRelation(parentB, childA, EntityRelation.MANAGES_TYPE);
+        EntityRelation relationB2 = new EntityRelation(parentB, childB, EntityRelation.MANAGES_TYPE);
+
+        saveRelation(relationA1);
+        saveRelation(relationA2);
+
+        saveRelation(relationB1);
+        saveRelation(relationB2);
+
+        // Data propagation to views is async
+        Thread.sleep(3000);
+
+        List<EntityRelation> relations = relationService.findByTo(childA).get();
+        Assert.assertEquals(2, relations.size());
+        for (EntityRelation relation : relations) {
+            Assert.assertEquals(childA, relation.getTo());
+            Assert.assertTrue(parentA.equals(relation.getFrom()) || parentB.equals(relation.getFrom()));
+        }
+
+        relations = relationService.findByToAndType(childA, EntityRelation.CONTAINS_TYPE).get();
+        Assert.assertEquals(1, relations.size());
+
+        relations = relationService.findByToAndType(childB, EntityRelation.MANAGES_TYPE).get();
+        Assert.assertEquals(1, relations.size());
+
+        relations = relationService.findByToAndType(parentA, EntityRelation.MANAGES_TYPE).get();
+        Assert.assertEquals(0, relations.size());
+
+        relations = relationService.findByToAndType(parentB, EntityRelation.MANAGES_TYPE).get();
+        Assert.assertEquals(0, relations.size());
+
+        relations = relationService.findByTo(childB).get();
+        Assert.assertEquals(2, relations.size());
+        for (EntityRelation relation : relations) {
+            Assert.assertEquals(childB, relation.getTo());
+            Assert.assertTrue(parentA.equals(relation.getFrom()) || parentB.equals(relation.getFrom()));
+        }
+    }
+
+    @Test
+    public void testCyclicRecursiveRelation() throws ExecutionException, InterruptedException {
+        // A -> B -> C -> A
+        AssetId assetA = new AssetId(UUIDs.timeBased());
+        AssetId assetB = new AssetId(UUIDs.timeBased());
+        AssetId assetC = new AssetId(UUIDs.timeBased());
+
+        EntityRelation relationA = new EntityRelation(assetA, assetB, EntityRelation.CONTAINS_TYPE);
+        EntityRelation relationB = new EntityRelation(assetB, assetC, EntityRelation.CONTAINS_TYPE);
+        EntityRelation relationC = new EntityRelation(assetC, assetA, EntityRelation.CONTAINS_TYPE);
+
+        saveRelation(relationA);
+        saveRelation(relationB);
+        saveRelation(relationC);
+
+        EntityRelationsQuery query = new EntityRelationsQuery();
+        query.setParameters(new RelationsSearchParameters(assetA, EntitySearchDirection.FROM, -1));
+        query.setFilters(Collections.singletonList(new EntityTypeFilter(EntityRelation.CONTAINS_TYPE, Collections.singletonList(EntityType.ASSET))));
+        List<EntityRelation> relations = relationService.findByQuery(query).get();
+        Assert.assertEquals(3, relations.size());
+        Assert.assertTrue(relations.contains(relationA));
+        Assert.assertTrue(relations.contains(relationB));
+        Assert.assertTrue(relations.contains(relationC));
+    }
+
+    @Test
+    public void testRecursiveRelation() throws ExecutionException, InterruptedException {
+        // A -> B -> [C,D]
+        AssetId assetA = new AssetId(UUIDs.timeBased());
+        AssetId assetB = new AssetId(UUIDs.timeBased());
+        AssetId assetC = new AssetId(UUIDs.timeBased());
+        DeviceId deviceD = new DeviceId(UUIDs.timeBased());
+
+        EntityRelation relationAB = new EntityRelation(assetA, assetB, EntityRelation.CONTAINS_TYPE);
+        EntityRelation relationBC = new EntityRelation(assetB, assetC, EntityRelation.CONTAINS_TYPE);
+        EntityRelation relationBD = new EntityRelation(assetB, deviceD, EntityRelation.CONTAINS_TYPE);
+
+
+        saveRelation(relationAB);
+        saveRelation(relationBC);
+        saveRelation(relationBD);
+
+        EntityRelationsQuery query = new EntityRelationsQuery();
+        query.setParameters(new RelationsSearchParameters(assetA, EntitySearchDirection.FROM, -1));
+        query.setFilters(Collections.singletonList(new EntityTypeFilter(EntityRelation.CONTAINS_TYPE, Collections.singletonList(EntityType.ASSET))));
+        List<EntityRelation> relations = relationService.findByQuery(query).get();
+        Assert.assertEquals(2, relations.size());
+        Assert.assertTrue(relations.contains(relationAB));
+        Assert.assertTrue(relations.contains(relationBC));
+    }
+
+
+    @Test(expected = DataValidationException.class)
+    public void testSaveRelationWithEmptyFrom() throws ExecutionException, InterruptedException {
+        EntityRelation relation = new EntityRelation();
+        relation.setTo(new AssetId(UUIDs.timeBased()));
+        relation.setType(EntityRelation.CONTAINS_TYPE);
+        Assert.assertTrue(saveRelation(relation));
+    }
+
+    @Test(expected = DataValidationException.class)
+    public void testSaveRelationWithEmptyTo() throws ExecutionException, InterruptedException {
+        EntityRelation relation = new EntityRelation();
+        relation.setFrom(new AssetId(UUIDs.timeBased()));
+        relation.setType(EntityRelation.CONTAINS_TYPE);
+        Assert.assertTrue(saveRelation(relation));
+    }
+
+    @Test(expected = DataValidationException.class)
+    public void testSaveRelationWithEmptyType() throws ExecutionException, InterruptedException {
+        EntityRelation relation = new EntityRelation();
+        relation.setFrom(new AssetId(UUIDs.timeBased()));
+        relation.setTo(new AssetId(UUIDs.timeBased()));
+        Assert.assertTrue(saveRelation(relation));
+    }
+}

dao/src/test/java/org/thingsboard/server/dao/timeseries/TimeseriesServiceTest.java

@@ -66,7 +66,7 @@ public class TimeseriesServiceTest extends AbstractServiceTest {
         saveEntries(deviceId, TS - 1);
         saveEntries(deviceId, TS);
 
-        ResultSetFuture rsFuture = tsService.findAllLatest(DataConstants.DEVICE, deviceId);
+        ResultSetFuture rsFuture = tsService.findAllLatest(deviceId);
         List<TsKvEntry> tsList = tsService.convertResultSetToTsKvEntryList(rsFuture.get());
 
         assertNotNull(tsList);
@@ -95,7 +95,7 @@ public class TimeseriesServiceTest extends AbstractServiceTest {
         saveEntries(deviceId, TS - 1);
         saveEntries(deviceId, TS);
 
-        List<ResultSet> rs = tsService.findLatest(DataConstants.DEVICE, deviceId, Collections.singleton(STRING_KEY)).get();
+        List<ResultSet> rs = tsService.findLatest(deviceId, Collections.singleton(STRING_KEY)).get();
         Assert.assertEquals(1, rs.size());
         Assert.assertEquals(toTsEntry(TS, stringKvEntry), tsService.convertResultToTsKvEntry(rs.get(0).one()));
     }
@@ -114,7 +114,7 @@ public class TimeseriesServiceTest extends AbstractServiceTest {
         entries.add(save(deviceId, 45000, 500));
         entries.add(save(deviceId, 55000, 600));
 
-        List<TsKvEntry> list = tsService.findAll(DataConstants.DEVICE, deviceId, Collections.singletonList(new BaseTsKvQuery(LONG_KEY, 0,
+        List<TsKvEntry> list = tsService.findAll(deviceId, Collections.singletonList(new BaseTsKvQuery(LONG_KEY, 0,
                 60000, 20000, 3, Aggregation.NONE))).get();
         assertEquals(3, list.size());
         assertEquals(55000, list.get(0).getTs());
@@ -126,7 +126,7 @@ public class TimeseriesServiceTest extends AbstractServiceTest {
         assertEquals(35000, list.get(2).getTs());
         assertEquals(java.util.Optional.of(400L), list.get(2).getLongValue());
 
-        list = tsService.findAll(DataConstants.DEVICE, deviceId, Collections.singletonList(new BaseTsKvQuery(LONG_KEY, 0,
+        list = tsService.findAll(deviceId, Collections.singletonList(new BaseTsKvQuery(LONG_KEY, 0,
                 60000, 20000, 3, Aggregation.AVG))).get();
         assertEquals(3, list.size());
         assertEquals(10000, list.get(0).getTs());
@@ -138,7 +138,7 @@ public class TimeseriesServiceTest extends AbstractServiceTest {
         assertEquals(50000, list.get(2).getTs());
         assertEquals(java.util.Optional.of(550L), list.get(2).getLongValue());
 
-        list = tsService.findAll(DataConstants.DEVICE, deviceId, Collections.singletonList(new BaseTsKvQuery(LONG_KEY, 0,
+        list = tsService.findAll(deviceId, Collections.singletonList(new BaseTsKvQuery(LONG_KEY, 0,
                 60000, 20000, 3, Aggregation.SUM))).get();
 
         assertEquals(3, list.size());
@@ -151,7 +151,7 @@ public class TimeseriesServiceTest extends AbstractServiceTest {
         assertEquals(50000, list.get(2).getTs());
         assertEquals(java.util.Optional.of(1100L), list.get(2).getLongValue());
 
-        list = tsService.findAll(DataConstants.DEVICE, deviceId, Collections.singletonList(new BaseTsKvQuery(LONG_KEY, 0,
+        list = tsService.findAll(deviceId, Collections.singletonList(new BaseTsKvQuery(LONG_KEY, 0,
                 60000, 20000, 3, Aggregation.MIN))).get();
 
         assertEquals(3, list.size());
@@ -164,7 +164,7 @@ public class TimeseriesServiceTest extends AbstractServiceTest {
         assertEquals(50000, list.get(2).getTs());
         assertEquals(java.util.Optional.of(500L), list.get(2).getLongValue());
 
-        list = tsService.findAll(DataConstants.DEVICE, deviceId, Collections.singletonList(new BaseTsKvQuery(LONG_KEY, 0,
+        list = tsService.findAll(deviceId, Collections.singletonList(new BaseTsKvQuery(LONG_KEY, 0,
                 60000, 20000, 3, Aggregation.MAX))).get();
 
         assertEquals(3, list.size());
@@ -177,7 +177,7 @@ public class TimeseriesServiceTest extends AbstractServiceTest {
         assertEquals(50000, list.get(2).getTs());
         assertEquals(java.util.Optional.of(600L), list.get(2).getLongValue());
 
-        list = tsService.findAll(DataConstants.DEVICE, deviceId, Collections.singletonList(new BaseTsKvQuery(LONG_KEY, 0,
+        list = tsService.findAll(deviceId, Collections.singletonList(new BaseTsKvQuery(LONG_KEY, 0,
                 60000, 20000, 3, Aggregation.COUNT))).get();
 
         assertEquals(3, list.size());
@@ -193,15 +193,15 @@ public class TimeseriesServiceTest extends AbstractServiceTest {
 
     private TsKvEntry save(DeviceId deviceId, long ts, long value) throws Exception {
         TsKvEntry entry = new BasicTsKvEntry(ts, new LongDataEntry(LONG_KEY, value));
-        tsService.save(DataConstants.DEVICE, deviceId, entry).get();
+        tsService.save(deviceId, entry).get();
         return entry;
     }
 
     private void saveEntries(DeviceId deviceId, long ts) throws ExecutionException, InterruptedException {
-        tsService.save(DataConstants.DEVICE, deviceId, toTsEntry(ts, stringKvEntry)).get();
-        tsService.save(DataConstants.DEVICE, deviceId, toTsEntry(ts, longKvEntry)).get();
-        tsService.save(DataConstants.DEVICE, deviceId, toTsEntry(ts, doubleKvEntry)).get();
-        tsService.save(DataConstants.DEVICE, deviceId, toTsEntry(ts, booleanKvEntry)).get();
+        tsService.save(deviceId, toTsEntry(ts, stringKvEntry)).get();
+        tsService.save(deviceId, toTsEntry(ts, longKvEntry)).get();
+        tsService.save(deviceId, toTsEntry(ts, doubleKvEntry)).get();
+        tsService.save(deviceId, toTsEntry(ts, booleanKvEntry)).get();
     }
 
     private static TsKvEntry toTsEntry(long ts, KvEntry entry) {

extensions-api/src/main/java/org/thingsboard/server/extensions/api/exception/UnauthorizedException.java

@@ -19,4 +19,9 @@ package org.thingsboard.server.extensions.api.exception;
  * Created by ashvayka on 21.02.17.
  */
 public class UnauthorizedException extends Exception {
+
+    public UnauthorizedException(String message) {
+        super(message);
+    }
+
 }

extensions-api/src/main/java/org/thingsboard/server/extensions/api/plugins/PluginContext.java

@@ -49,7 +49,7 @@ public interface PluginContext {
         Device RPC API
      */
 
-    Optional<ServerAddress> resolve(DeviceId deviceId);
+    Optional<ServerAddress> resolve(EntityId entityId);
 
     void getDevice(DeviceId deviceId, PluginCallback<Device> pluginCallback);
 
@@ -77,33 +77,33 @@ public interface PluginContext {
      */
 
 
-    void saveTsData(DeviceId deviceId, TsKvEntry entry, PluginCallback<Void> callback);
+    void saveTsData(EntityId entityId, TsKvEntry entry, PluginCallback<Void> callback);
 
-    void saveTsData(DeviceId deviceId, List<TsKvEntry> entry, PluginCallback<Void> callback);
+    void saveTsData(EntityId entityId, List<TsKvEntry> entry, PluginCallback<Void> callback);
 
-    void loadTimeseries(DeviceId deviceId, List<TsKvQuery> queries, PluginCallback<List<TsKvEntry>> callback);
+    void loadTimeseries(EntityId entityId, List<TsKvQuery> queries, PluginCallback<List<TsKvEntry>> callback);
 
-    void loadLatestTimeseries(DeviceId deviceId, Collection<String> keys, PluginCallback<List<TsKvEntry>> callback);
+    void loadLatestTimeseries(EntityId entityId, Collection<String> keys, PluginCallback<List<TsKvEntry>> callback);
 
-    void loadLatestTimeseries(DeviceId deviceId, PluginCallback<List<TsKvEntry>> callback);
+    void loadLatestTimeseries(EntityId entityId, PluginCallback<List<TsKvEntry>> callback);
 
     /*
         Attributes API
      */
 
-    void saveAttributes(TenantId tenantId, DeviceId deviceId, String attributeType, List<AttributeKvEntry> attributes, PluginCallback<Void> callback);
+    void saveAttributes(TenantId tenantId, EntityId entityId, String attributeType, List<AttributeKvEntry> attributes, PluginCallback<Void> callback);
 
-    void removeAttributes(TenantId tenantId, DeviceId deviceId, String scope, List<String> attributeKeys, PluginCallback<Void> callback);
+    void removeAttributes(TenantId tenantId, EntityId entityId, String scope, List<String> attributeKeys, PluginCallback<Void> callback);
 
-    void loadAttribute(DeviceId deviceId, String attributeType, String attributeKey, PluginCallback<Optional<AttributeKvEntry>> callback);
+    void loadAttribute(EntityId entityId, String attributeType, String attributeKey, PluginCallback<Optional<AttributeKvEntry>> callback);
 
-    void loadAttributes(DeviceId deviceId, String attributeType, Collection<String> attributeKeys, PluginCallback<List<AttributeKvEntry>> callback);
+    void loadAttributes(EntityId entityId, String attributeType, Collection<String> attributeKeys, PluginCallback<List<AttributeKvEntry>> callback);
 
-    void loadAttributes(DeviceId deviceId, String attributeType, PluginCallback<List<AttributeKvEntry>> callback);
+    void loadAttributes(EntityId entityId, String attributeType, PluginCallback<List<AttributeKvEntry>> callback);
 
-    void loadAttributes(DeviceId deviceId, Collection<String> attributeTypes, PluginCallback<List<AttributeKvEntry>> callback);
+    void loadAttributes(EntityId entityId, Collection<String> attributeTypes, PluginCallback<List<AttributeKvEntry>> callback);
 
-    void loadAttributes(DeviceId deviceId, Collection<String> attributeTypes, Collection<String> attributeKeys, PluginCallback<List<AttributeKvEntry>> callback);
+    void loadAttributes(EntityId entityId, Collection<String> attributeTypes, Collection<String> attributeKeys, PluginCallback<List<AttributeKvEntry>> callback);
 
     void getCustomerDevices(TenantId tenantId, CustomerId customerId, int limit, PluginCallback<List<Device>> callback);
 }

extensions-core/pom.xml

@@ -41,6 +41,11 @@
             <artifactId>extensions-api</artifactId>
             <scope>provided</scope>
         </dependency>
+        <dependency>
+            <groupId>org.thingsboard.common</groupId>
+            <artifactId>transport</artifactId>
+            <scope>provided</scope>
+        </dependency>
         <dependency>
             <groupId>com.google.code.gson</groupId>
             <artifactId>gson</artifactId>

extensions-core/src/main/java/org/thingsboard/server/extensions/core/plugin/telemetry/SubscriptionManager.java

@@ -19,6 +19,7 @@ import lombok.Setter;
 import lombok.extern.slf4j.Slf4j;
 import org.thingsboard.server.common.data.DataConstants;
 import org.thingsboard.server.common.data.id.DeviceId;
+import org.thingsboard.server.common.data.id.EntityId;
 import org.thingsboard.server.common.data.kv.*;
 import org.thingsboard.server.common.msg.cluster.ServerAddress;
 import org.thingsboard.server.extensions.api.plugins.PluginCallback;
@@ -39,7 +40,7 @@ import java.util.function.Function;
 @Slf4j
 public class SubscriptionManager {
 
-    private final Map<DeviceId, Set<Subscription>> subscriptionsByDeviceId = new HashMap<>();
+    private final Map<EntityId, Set<Subscription>> subscriptionsByEntityId = new HashMap<>();
 
     private final Map<String, Map<Integer, Subscription>> subscriptionsByWsSessionId = new HashMap<>();
 
@@ -48,28 +49,28 @@ public class SubscriptionManager {
     @Setter
     private TelemetryRpcMsgHandler rpcHandler;
 
-    public void addLocalWsSubscription(PluginContext ctx, String sessionId, DeviceId deviceId, SubscriptionState sub) {
-        Optional<ServerAddress> server = ctx.resolve(deviceId);
+    public void addLocalWsSubscription(PluginContext ctx, String sessionId, EntityId entityId, SubscriptionState sub) {
+        Optional<ServerAddress> server = ctx.resolve(entityId);
         Subscription subscription;
         if (server.isPresent()) {
             ServerAddress address = server.get();
-            log.trace("[{}] Forwarding subscription [{}] for device [{}] to [{}]", sessionId, sub.getSubscriptionId(), deviceId, address);
+            log.trace("[{}] Forwarding subscription [{}] for device [{}] to [{}]", sessionId, sub.getSubscriptionId(), entityId, address);
             subscription = new Subscription(sub, true, address);
             rpcHandler.onNewSubscription(ctx, address, sessionId, subscription);
         } else {
-            log.trace("[{}] Registering local subscription [{}] for device [{}]", sessionId, sub.getSubscriptionId(), deviceId);
+            log.trace("[{}] Registering local subscription [{}] for device [{}]", sessionId, sub.getSubscriptionId(), entityId);
             subscription = new Subscription(sub, true);
         }
-        registerSubscription(sessionId, deviceId, subscription);
+        registerSubscription(sessionId, entityId, subscription);
     }
 
     public void addRemoteWsSubscription(PluginContext ctx, ServerAddress address, String sessionId, Subscription subscription) {
-        DeviceId deviceId = subscription.getDeviceId();
-        log.trace("[{}] Registering remote subscription [{}] for device [{}] to [{}]", sessionId, subscription.getSubscriptionId(), deviceId, address);
-        registerSubscription(sessionId, deviceId, subscription);
+        EntityId entityId = subscription.getEntityId();
+        log.trace("[{}] Registering remote subscription [{}] for device [{}] to [{}]", sessionId, subscription.getSubscriptionId(), entityId, address);
+        registerSubscription(sessionId, entityId, subscription);
         if (subscription.getType() == SubscriptionType.ATTRIBUTES) {
             final Map<String, Long> keyStates = subscription.getKeyStates();
-            ctx.loadAttributes(deviceId, DataConstants.CLIENT_SCOPE, keyStates.keySet(), new PluginCallback<List<AttributeKvEntry>>() {
+            ctx.loadAttributes(entityId, DataConstants.CLIENT_SCOPE, keyStates.keySet(), new PluginCallback<List<AttributeKvEntry>>() {
                 @Override
                 public void onSuccess(PluginContext ctx, List<AttributeKvEntry> values) {
                     List<TsKvEntry> missedUpdates = new ArrayList<>();
@@ -95,7 +96,7 @@ public class SubscriptionManager {
                 queries.add(new BaseTsKvQuery(e.getKey(), e.getValue() + 1L, curTs));
             });
 
-            ctx.loadTimeseries(deviceId, queries, new PluginCallback<List<TsKvEntry>>() {
+            ctx.loadTimeseries(entityId, queries, new PluginCallback<List<TsKvEntry>>() {
                 @Override
                 public void onSuccess(PluginContext ctx, List<TsKvEntry> missedUpdates) {
                     if (!missedUpdates.isEmpty()) {
@@ -112,11 +113,11 @@ public class SubscriptionManager {
 
     }
 
-    private void registerSubscription(String sessionId, DeviceId deviceId, Subscription subscription) {
-        Set<Subscription> deviceSubscriptions = subscriptionsByDeviceId.get(subscription.getDeviceId());
+    private void registerSubscription(String sessionId, EntityId entityId, Subscription subscription) {
+        Set<Subscription> deviceSubscriptions = subscriptionsByEntityId.get(subscription.getEntityId());
         if (deviceSubscriptions == null) {
             deviceSubscriptions = new HashSet<>();
-            subscriptionsByDeviceId.put(deviceId, deviceSubscriptions);
+            subscriptionsByEntityId.put(entityId, deviceSubscriptions);
         }
         deviceSubscriptions.add(subscription);
         Map<Integer, Subscription> sessionSubscriptions = subscriptionsByWsSessionId.get(sessionId);
@@ -133,7 +134,7 @@ public class SubscriptionManager {
         if (sessionSubscriptions != null) {
             Subscription subscription = sessionSubscriptions.remove(subscriptionId);
             if (subscription != null) {
-                DeviceId deviceId = subscription.getDeviceId();
+                EntityId entityId = subscription.getEntityId();
                 if (subscription.isLocal() && subscription.getServer() != null) {
                     rpcHandler.onSubscriptionClose(ctx, subscription.getServer(), sessionId, subscription.getSubscriptionId());
                 }
@@ -143,13 +144,13 @@ public class SubscriptionManager {
                 } else {
                     log.debug("[{}] Removed session subscription.", sessionId);
                 }
-                Set<Subscription> deviceSubscriptions = subscriptionsByDeviceId.get(deviceId);
+                Set<Subscription> deviceSubscriptions = subscriptionsByEntityId.get(entityId);
                 if (deviceSubscriptions != null) {
                     boolean result = deviceSubscriptions.remove(subscription);
                     if (result) {
                         if (deviceSubscriptions.size() == 0) {
                             log.debug("[{}] Removed last subscription for particular device.", sessionId);
-                            subscriptionsByDeviceId.remove(deviceId);
+                            subscriptionsByEntityId.remove(entityId);
                         } else {
                             log.debug("[{}] Removed device subscription.", sessionId);
                         }
@@ -167,8 +168,8 @@ public class SubscriptionManager {
         }
     }
 
-    public void onLocalSubscriptionUpdate(PluginContext ctx, DeviceId deviceId, SubscriptionType type, Function<Subscription, List<TsKvEntry>> f) {
-        Set<Subscription> deviceSubscriptions = subscriptionsByDeviceId.get(deviceId);
+    public void onLocalSubscriptionUpdate(PluginContext ctx, EntityId entityId, SubscriptionType type, Function<Subscription, List<TsKvEntry>> f) {
+        Set<Subscription> deviceSubscriptions = subscriptionsByEntityId.get(entityId);
         if (deviceSubscriptions != null) {
             deviceSubscriptions.stream().filter(s -> type == s.getType()).forEach(s -> {
                 String sessionId = s.getWsSessionId();
@@ -184,7 +185,7 @@ public class SubscriptionManager {
                 }
             });
         } else {
-            log.debug("[{}] No device subscriptions to process!", deviceId);
+            log.debug("[{}] No device subscriptions to process!", entityId);
         }
     }
 
@@ -197,10 +198,10 @@ public class SubscriptionManager {
         }
     }
 
-    public void onAttributesUpdateFromServer(PluginContext ctx, DeviceId deviceId, String scope, List<AttributeKvEntry> attributes) {
-        Optional<ServerAddress> serverAddress = ctx.resolve(deviceId);
+    public void onAttributesUpdateFromServer(PluginContext ctx, EntityId entityId, String scope, List<AttributeKvEntry> attributes) {
+        Optional<ServerAddress> serverAddress = ctx.resolve(entityId);
         if (!serverAddress.isPresent()) {
-            onLocalSubscriptionUpdate(ctx, deviceId, SubscriptionType.ATTRIBUTES, s -> {
+            onLocalSubscriptionUpdate(ctx, entityId, SubscriptionType.ATTRIBUTES, s -> {
                 List<TsKvEntry> subscriptionUpdate = new ArrayList<TsKvEntry>();
                 for (AttributeKvEntry kv : attributes) {
                     if (s.isAllKeys() || s.getKeyStates().containsKey(kv.getKey())) {
@@ -210,7 +211,24 @@ public class SubscriptionManager {
                 return subscriptionUpdate;
             });
         } else {
-            rpcHandler.onAttributesUpdate(ctx, serverAddress.get(), deviceId, scope, attributes);
+            rpcHandler.onAttributesUpdate(ctx, serverAddress.get(), entityId, scope, attributes);
+        }
+    }
+
+    public void onTimeseriesUpdateFromServer(PluginContext ctx, EntityId entityId, List<TsKvEntry> entries) {
+        Optional<ServerAddress> serverAddress = ctx.resolve(entityId);
+        if (!serverAddress.isPresent()) {
+            onLocalSubscriptionUpdate(ctx, entityId, SubscriptionType.TIMESERIES, s -> {
+                List<TsKvEntry> subscriptionUpdate = new ArrayList<TsKvEntry>();
+                for (TsKvEntry kv : entries) {
+                    if (s.isAllKeys() || s.getKeyStates().containsKey((kv.getKey()))) {
+                        subscriptionUpdate.add(kv);
+                    }
+                }
+                return subscriptionUpdate;
+            });
+        } else {
+            rpcHandler.onTimeseriesUpdate(ctx, serverAddress.get(), entityId, entries);
         }
     }
 
@@ -243,11 +261,11 @@ public class SubscriptionManager {
             int sessionSubscriptionSize = sessionSubscriptions.size();
 
             for (Subscription subscription : sessionSubscriptions.values()) {
-                DeviceId deviceId = subscription.getDeviceId();
-                Set<Subscription> deviceSubscriptions = subscriptionsByDeviceId.get(deviceId);
+                EntityId entityId = subscription.getEntityId();
+                Set<Subscription> deviceSubscriptions = subscriptionsByEntityId.get(entityId);
                 deviceSubscriptions.remove(subscription);
                 if (deviceSubscriptions.isEmpty()) {
-                    subscriptionsByDeviceId.remove(deviceId);
+                    subscriptionsByEntityId.remove(entityId);
                 }
             }
             subscriptionsByWsSessionId.remove(sessionId);
@@ -272,9 +290,9 @@ public class SubscriptionManager {
 
     public void onClusterUpdate(PluginContext ctx) {
         log.trace("Processing cluster onUpdate msg!");
-        Iterator<Map.Entry<DeviceId, Set<Subscription>>> deviceIterator = subscriptionsByDeviceId.entrySet().iterator();
+        Iterator<Map.Entry<EntityId, Set<Subscription>>> deviceIterator = subscriptionsByEntityId.entrySet().iterator();
         while (deviceIterator.hasNext()) {
-            Map.Entry<DeviceId, Set<Subscription>> e = deviceIterator.next();
+            Map.Entry<EntityId, Set<Subscription>> e = deviceIterator.next();
             Set<Subscription> subscriptions = e.getValue();
             Optional<ServerAddress> newAddressOptional = ctx.resolve(e.getKey());
             if (newAddressOptional.isPresent()) {
@@ -317,6 +335,6 @@ public class SubscriptionManager {
 
     public void clear() {
         subscriptionsByWsSessionId.clear();
-        subscriptionsByDeviceId.clear();
+        subscriptionsByEntityId.clear();
     }
 }

extensions-core/src/main/java/org/thingsboard/server/extensions/core/plugin/telemetry/cmd/GetHistoryCmd.java

@@ -28,7 +28,8 @@ import lombok.NoArgsConstructor;
 public class GetHistoryCmd implements TelemetryPluginCmd {
 
     private int cmdId;
-    private String deviceId;
+    private String entityType;
+    private String entityId;
     private String keys;
     private long startTs;
     private long endTs;

extensions-core/src/main/java/org/thingsboard/server/extensions/core/plugin/telemetry/cmd/SubscriptionCmd.java

@@ -26,7 +26,8 @@ import org.thingsboard.server.extensions.core.plugin.telemetry.sub.SubscriptionT
 public abstract class SubscriptionCmd implements TelemetryPluginCmd {
 
     private int cmdId;
-    private String deviceId;
+    private String entityType;
+    private String entityId;
     private String keys;
     private String scope;
     private boolean unsubscribe;
@@ -35,7 +36,7 @@ public abstract class SubscriptionCmd implements TelemetryPluginCmd {
 
     @Override
     public String toString() {
-        return "SubscriptionCmd [deviceId=" + deviceId + ", tags=" + keys + ", unsubscribe=" + unsubscribe + "]";
+        return "SubscriptionCmd [entityType=" + entityType  + ", entityId=" + entityId + ", tags=" + keys + ", unsubscribe=" + unsubscribe + "]";
     }
 
 }

extensions-core/src/main/java/org/thingsboard/server/extensions/core/plugin/telemetry/handlers/TelemetryFeature.java

@@ -0,0 +1,29 @@
+/**
+ * Copyright © 2016-2017 The Thingsboard Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.thingsboard.server.extensions.core.plugin.telemetry.handlers;
+
+/**
+ * Created by ashvayka on 08.05.17.
+ */
+public enum TelemetryFeature {
+
+    ATTRIBUTES, TIMESERIES;
+
+    public static TelemetryFeature forName(String name) {
+        return TelemetryFeature.valueOf(name.toUpperCase());
+    }
+
+}

extensions-core/src/main/java/org/thingsboard/server/extensions/core/plugin/telemetry/handlers/TelemetryRestMsgHandler.java

@@ -16,13 +16,19 @@
 package org.thingsboard.server.extensions.core.plugin.telemetry.handlers;
 
 import com.fasterxml.jackson.databind.JsonNode;
+import com.google.gson.JsonParser;
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.http.HttpStatus;
 import org.springframework.http.ResponseEntity;
 import org.springframework.util.StringUtils;
 import org.thingsboard.server.common.data.DataConstants;
+import org.thingsboard.server.common.data.EntityType;
 import org.thingsboard.server.common.data.id.DeviceId;
+import org.thingsboard.server.common.data.id.EntityId;
+import org.thingsboard.server.common.data.id.EntityIdFactory;
 import org.thingsboard.server.common.data.kv.*;
+import org.thingsboard.server.common.msg.core.TelemetryUploadRequest;
+import org.thingsboard.server.common.transport.adaptor.JsonConverter;
 import org.thingsboard.server.extensions.api.plugins.PluginCallback;
 import org.thingsboard.server.extensions.api.plugins.PluginContext;
 import org.thingsboard.server.extensions.api.plugins.handlers.DefaultRestMsgHandler;
@@ -50,121 +56,116 @@ public class TelemetryRestMsgHandler extends DefaultRestMsgHandler {
     public void handleHttpGetRequest(PluginContext ctx, PluginRestMsg msg) throws ServletException {
         RestRequest request = msg.getRequest();
         String[] pathParams = request.getPathParams();
-        if (pathParams.length >= 3) {
-            String deviceIdStr = pathParams[0];
-            String method = pathParams[1];
-            String entity = pathParams[2];
-            String scope = pathParams.length >= 4 ? pathParams[3] : null;
-            if (StringUtils.isEmpty(method) || StringUtils.isEmpty(entity) || StringUtils.isEmpty(deviceIdStr)) {
-                msg.getResponseHolder().setResult(new ResponseEntity<>(HttpStatus.BAD_REQUEST));
-                return;
-            }
+        if (pathParams.length < 4) {
+            msg.getResponseHolder().setResult(new ResponseEntity<>(HttpStatus.BAD_REQUEST));
+            return;
+        }
 
-            DeviceId deviceId = DeviceId.fromString(deviceIdStr);
+        String entityType = pathParams[0];
+        String entityIdStr = pathParams[1];
+        String method = pathParams[2];
+        TelemetryFeature feature = TelemetryFeature.forName(pathParams[3]);
+        String scope = pathParams.length >= 5 ? pathParams[4] : null;
+        if (StringUtils.isEmpty(entityType) || EntityType.valueOf(entityType) == null || StringUtils.isEmpty(entityIdStr) || StringUtils.isEmpty(method) || StringUtils.isEmpty(feature)) {
+            msg.getResponseHolder().setResult(new ResponseEntity<>(HttpStatus.BAD_REQUEST));
+            return;
+        }
 
-            if (method.equals("keys")) {
-                if (entity.equals("timeseries")) {
-                    ctx.loadLatestTimeseries(deviceId, new PluginCallback<List<TsKvEntry>>() {
-                        @Override
-                        public void onSuccess(PluginContext ctx, List<TsKvEntry> value) {
-                            List<String> keys = value.stream().map(tsKv -> tsKv.getKey()).collect(Collectors.toList());
-                            msg.getResponseHolder().setResult(new ResponseEntity<>(keys, HttpStatus.OK));
-                        }
+        EntityId entityId = EntityIdFactory.getByTypeAndId(entityType, entityIdStr);
 
-                        @Override
-                        public void onFailure(PluginContext ctx, Exception e) {
-                            msg.getResponseHolder().setResult(new ResponseEntity<>(HttpStatus.INTERNAL_SERVER_ERROR));
-                        }
-                    });
-                } else if (entity.equals("attributes")) {
-                    PluginCallback<List<AttributeKvEntry>> callback = getAttributeKeysPluginCallback(msg);
-                    if (!StringUtils.isEmpty(scope)) {
-                        ctx.loadAttributes(deviceId, scope, callback);
-                    } else {
-                        ctx.loadAttributes(deviceId, Arrays.asList(DataConstants.ALL_SCOPES), callback);
+        if (method.equals("keys")) {
+            if (feature == TelemetryFeature.TIMESERIES) {
+                ctx.loadLatestTimeseries(entityId, new PluginCallback<List<TsKvEntry>>() {
+                    @Override
+                    public void onSuccess(PluginContext ctx, List<TsKvEntry> value) {
+                        List<String> keys = value.stream().map(tsKv -> tsKv.getKey()).collect(Collectors.toList());
+                        msg.getResponseHolder().setResult(new ResponseEntity<>(keys, HttpStatus.OK));
+                    }
+
+                    @Override
+                    public void onFailure(PluginContext ctx, Exception e) {
+                        msg.getResponseHolder().setResult(new ResponseEntity<>(HttpStatus.INTERNAL_SERVER_ERROR));
                     }
+                });
+            } else if (feature == TelemetryFeature.ATTRIBUTES) {
+                PluginCallback<List<AttributeKvEntry>> callback = getAttributeKeysPluginCallback(msg);
+                if (!StringUtils.isEmpty(scope)) {
+                    ctx.loadAttributes(entityId, scope, callback);
+                } else {
+                    ctx.loadAttributes(entityId, Arrays.asList(DataConstants.ALL_SCOPES), callback);
                 }
-            } else if (method.equals("values")) {
-                if ("timeseries".equals(entity)) {
-                    String keysStr = request.getParameter("keys");
-                    List<String> keys = Arrays.asList(keysStr.split(","));
+            }
+        } else if (method.equals("values")) {
+            if (feature == TelemetryFeature.TIMESERIES) {
+                String keysStr = request.getParameter("keys");
+                List<String> keys = Arrays.asList(keysStr.split(","));
 
-                    Optional<Long> startTs = request.getLongParamValue("startTs");
-                    Optional<Long> endTs = request.getLongParamValue("endTs");
-                    Optional<Long> interval = request.getLongParamValue("interval");
-                    Optional<Integer> limit = request.getIntParamValue("limit");
+                Optional<Long> startTs = request.getLongParamValue("startTs");
+                Optional<Long> endTs = request.getLongParamValue("endTs");
+                Optional<Long> interval = request.getLongParamValue("interval");
+                Optional<Integer> limit = request.getIntParamValue("limit");
 
-                    if (startTs.isPresent() || endTs.isPresent() || interval.isPresent() || limit.isPresent()) {
-                        if (!startTs.isPresent() || !endTs.isPresent() || !interval.isPresent()) {
-                            msg.getResponseHolder().setResult(new ResponseEntity<>(HttpStatus.BAD_REQUEST));
-                            return;
-                        }
-                        Aggregation agg = Aggregation.valueOf(request.getParameter("agg", Aggregation.NONE.name()));
+                if (startTs.isPresent() || endTs.isPresent() || interval.isPresent() || limit.isPresent()) {
+                    if (!startTs.isPresent() || !endTs.isPresent() || !interval.isPresent()) {
+                        msg.getResponseHolder().setResult(new ResponseEntity<>(HttpStatus.BAD_REQUEST));
+                        return;
+                    }
+                    Aggregation agg = Aggregation.valueOf(request.getParameter("agg", Aggregation.NONE.name()));
+
+                    List<TsKvQuery> queries = keys.stream().map(key -> new BaseTsKvQuery(key, startTs.get(), endTs.get(), interval.get(), limit.orElse(TelemetryWebsocketMsgHandler.DEFAULT_LIMIT), agg))
+                            .collect(Collectors.toList());
+                    ctx.loadTimeseries(entityId, queries, getTsKvListCallback(msg));
+                } else {
+                    ctx.loadLatestTimeseries(entityId, keys, getTsKvListCallback(msg));
+                }
+            } else if (feature == TelemetryFeature.ATTRIBUTES) {
+                String keys = request.getParameter("keys", "");
 
-                        List<TsKvQuery> queries = keys.stream().map(key -> new BaseTsKvQuery(key, startTs.get(), endTs.get(), interval.get(), limit.orElse(TelemetryWebsocketMsgHandler.DEFAULT_LIMIT), agg))
-                                .collect(Collectors.toList());
-                        ctx.loadTimeseries(deviceId, queries, getTsKvListCallback(msg));
+                PluginCallback<List<AttributeKvEntry>> callback = getAttributeValuesPluginCallback(msg);
+                if (!StringUtils.isEmpty(scope)) {
+                    if (!StringUtils.isEmpty(keys)) {
+                        List<String> keyList = Arrays.asList(keys.split(","));
+                        ctx.loadAttributes(entityId, scope, keyList, callback);
                     } else {
-                        ctx.loadLatestTimeseries(deviceId, keys, getTsKvListCallback(msg));
+                        ctx.loadAttributes(entityId, scope, callback);
                     }
-                } else if ("attributes".equals(entity)) {
-                    String keys = request.getParameter("keys", "");
-
-                    PluginCallback<List<AttributeKvEntry>> callback = getAttributeValuesPluginCallback(msg);
-                    if (!StringUtils.isEmpty(scope)) {
-                        if (!StringUtils.isEmpty(keys)) {
-                            List<String> keyList = Arrays.asList(keys.split(","));
-                            ctx.loadAttributes(deviceId, scope, keyList, callback);
-                        } else {
-                            ctx.loadAttributes(deviceId, scope, callback);
-                        }
+                } else {
+                    if (!StringUtils.isEmpty(keys)) {
+                        List<String> keyList = Arrays.asList(keys.split(","));
+                        ctx.loadAttributes(entityId, Arrays.asList(DataConstants.ALL_SCOPES), keyList, callback);
                     } else {
-                        if (!StringUtils.isEmpty(keys)) {
-                            List<String> keyList = Arrays.asList(keys.split(","));
-                            ctx.loadAttributes(deviceId, Arrays.asList(DataConstants.ALL_SCOPES), keyList, callback);
-                        } else {
-                            ctx.loadAttributes(deviceId, Arrays.asList(DataConstants.ALL_SCOPES), callback);
-                        }
+                        ctx.loadAttributes(entityId, Arrays.asList(DataConstants.ALL_SCOPES), callback);
                     }
                 }
             }
-        } else {
-            msg.getResponseHolder().setResult(new ResponseEntity<>(HttpStatus.BAD_REQUEST));
         }
     }
 
-    private PluginCallback<List<TsKvEntry>> getTsKvListCallback(final PluginRestMsg msg) {
-        return new PluginCallback<List<TsKvEntry>>() {
-            @Override
-            public void onSuccess(PluginContext ctx, List<TsKvEntry> data) {
-                Map<String, List<TsData>> result = new LinkedHashMap<>();
-                for (TsKvEntry entry : data) {
-                    List<TsData> vList = result.get(entry.getKey());
-                    if (vList == null) {
-                        vList = new ArrayList<>();
-                        result.put(entry.getKey(), vList);
-                    }
-                    vList.add(new TsData(entry.getTs(), entry.getValueAsString()));
-                }
-                msg.getResponseHolder().setResult(new ResponseEntity<>(result, HttpStatus.OK));
-            }
-
-            @Override
-            public void onFailure(PluginContext ctx, Exception e) {
-                log.error("Failed to fetch historical data", e);
-                msg.getResponseHolder().setResult(new ResponseEntity<>(HttpStatus.INTERNAL_SERVER_ERROR));
-            }
-        };
-    }
-
     @Override
     public void handleHttpPostRequest(PluginContext ctx, PluginRestMsg msg) throws ServletException {
         RestRequest request = msg.getRequest();
         try {
             String[] pathParams = request.getPathParams();
+            EntityId entityId;
+            String scope;
+            TelemetryFeature feature;
             if (pathParams.length == 2) {
-                DeviceId deviceId = DeviceId.fromString(pathParams[0]);
-                String scope = pathParams[1];
+                entityId = DeviceId.fromString(pathParams[0]);
+                scope = pathParams[1];
+                feature = TelemetryFeature.ATTRIBUTES;
+            } else if (pathParams.length == 3) {
+                entityId = EntityIdFactory.getByTypeAndId(pathParams[0], pathParams[1]);
+                scope = pathParams[2];
+                feature = TelemetryFeature.ATTRIBUTES;
+            } else if (pathParams.length == 4) {
+                entityId = EntityIdFactory.getByTypeAndId(pathParams[0], pathParams[1]);
+                feature = TelemetryFeature.forName(pathParams[2].toUpperCase());
+                scope = pathParams[3];
+            } else {
+                msg.getResponseHolder().setResult(new ResponseEntity<>(HttpStatus.BAD_REQUEST));
+                return;
+            }
+            if (feature == TelemetryFeature.ATTRIBUTES) {
                 if (DataConstants.SERVER_SCOPE.equals(scope) ||
                         DataConstants.SHARED_SCOPE.equals(scope)) {
                     JsonNode jsonNode = jsonMapper.readTree(request.getRequestBody());
@@ -185,11 +186,11 @@ public class TelemetryRestMsgHandler extends DefaultRestMsgHandler {
                             }
                         });
                         if (attributes.size() > 0) {
-                            ctx.saveAttributes(ctx.getSecurityCtx().orElseThrow(() -> new IllegalArgumentException()).getTenantId(), deviceId, scope, attributes, new PluginCallback<Void>() {
+                            ctx.saveAttributes(ctx.getSecurityCtx().orElseThrow(() -> new IllegalArgumentException()).getTenantId(), entityId, scope, attributes, new PluginCallback<Void>() {
                                 @Override
                                 public void onSuccess(PluginContext ctx, Void value) {
                                     msg.getResponseHolder().setResult(new ResponseEntity<>(HttpStatus.OK));
-                                    subscriptionManager.onAttributesUpdateFromServer(ctx, deviceId, scope, attributes);
+                                    subscriptionManager.onAttributesUpdateFromServer(ctx, entityId, scope, attributes);
                                 }
 
                                 @Override
@@ -202,6 +203,28 @@ public class TelemetryRestMsgHandler extends DefaultRestMsgHandler {
                         }
                     }
                 }
+            } else if (feature == TelemetryFeature.TIMESERIES) {
+                TelemetryUploadRequest telemetryRequest = JsonConverter.convertToTelemetry(new JsonParser().parse(request.getRequestBody()));
+                List<TsKvEntry> entries = new ArrayList<>();
+                for (Map.Entry<Long, List<KvEntry>> entry : telemetryRequest.getData().entrySet()) {
+                    for (KvEntry kv : entry.getValue()) {
+                        entries.add(new BasicTsKvEntry(entry.getKey(), kv));
+                    }
+                }
+                ctx.saveTsData(entityId, entries, new PluginCallback<Void>() {
+                    @Override
+                    public void onSuccess(PluginContext ctx, Void value) {
+                        msg.getResponseHolder().setResult(new ResponseEntity<>(HttpStatus.OK));
+                        subscriptionManager.onTimeseriesUpdateFromServer(ctx, entityId, entries);
+                    }
+
+                    @Override
+                    public void onFailure(PluginContext ctx, Exception e) {
+                        log.error("Failed to save attributes", e);
+                        msg.getResponseHolder().setResult(new ResponseEntity<>(HttpStatus.INTERNAL_SERVER_ERROR));
+                    }
+                });
+                return;
             }
         } catch (IOException | RuntimeException e) {
             log.debug("Failed to process POST request due to exception", e);
@@ -214,29 +237,38 @@ public class TelemetryRestMsgHandler extends DefaultRestMsgHandler {
         RestRequest request = msg.getRequest();
         try {
             String[] pathParams = request.getPathParams();
+            EntityId entityId;
+            String scope;
             if (pathParams.length == 2) {
-                DeviceId deviceId = DeviceId.fromString(pathParams[0]);
-                String scope = pathParams[1];
-                if (DataConstants.SERVER_SCOPE.equals(scope) ||
-                        DataConstants.SHARED_SCOPE.equals(scope) ||
-                        DataConstants.CLIENT_SCOPE.equals(scope)) {
-                    String keysParam = request.getParameter("keys");
-                    if (!StringUtils.isEmpty(keysParam)) {
-                        String[] keys = keysParam.split(",");
-                        ctx.removeAttributes(ctx.getSecurityCtx().orElseThrow(() -> new IllegalArgumentException()).getTenantId(), deviceId, scope, Arrays.asList(keys), new PluginCallback<Void>() {
-                            @Override
-                            public void onSuccess(PluginContext ctx, Void value) {
-                                msg.getResponseHolder().setResult(new ResponseEntity<>(HttpStatus.OK));
-                            }
+                entityId = DeviceId.fromString(pathParams[0]);
+                scope = pathParams[1];
+            } else if (pathParams.length == 3) {
+                entityId = EntityIdFactory.getByTypeAndId(pathParams[0], pathParams[1]);
+                scope = pathParams[2];
+            } else {
+                msg.getResponseHolder().setResult(new ResponseEntity<>(HttpStatus.BAD_REQUEST));
+                return;
+            }
 
-                            @Override
-                            public void onFailure(PluginContext ctx, Exception e) {
-                                log.error("Failed to remove attributes", e);
-                                msg.getResponseHolder().setResult(new ResponseEntity<>(HttpStatus.INTERNAL_SERVER_ERROR));
-                            }
-                        });
-                        return;
-                    }
+            if (DataConstants.SERVER_SCOPE.equals(scope) ||
+                    DataConstants.SHARED_SCOPE.equals(scope) ||
+                    DataConstants.CLIENT_SCOPE.equals(scope)) {
+                String keysParam = request.getParameter("keys");
+                if (!StringUtils.isEmpty(keysParam)) {
+                    String[] keys = keysParam.split(",");
+                    ctx.removeAttributes(ctx.getSecurityCtx().orElseThrow(() -> new IllegalArgumentException()).getTenantId(), entityId, scope, Arrays.asList(keys), new PluginCallback<Void>() {
+                        @Override
+                        public void onSuccess(PluginContext ctx, Void value) {
+                            msg.getResponseHolder().setResult(new ResponseEntity<>(HttpStatus.OK));
+                        }
+
+                        @Override
+                        public void onFailure(PluginContext ctx, Exception e) {
+                            log.error("Failed to remove attributes", e);
+                            msg.getResponseHolder().setResult(new ResponseEntity<>(HttpStatus.INTERNAL_SERVER_ERROR));
+                        }
+                    });
+                    return;
                 }
             }
         } catch (RuntimeException e) {
@@ -278,4 +310,29 @@ public class TelemetryRestMsgHandler extends DefaultRestMsgHandler {
             }
         };
     }
+
+
+    private PluginCallback<List<TsKvEntry>> getTsKvListCallback(final PluginRestMsg msg) {
+        return new PluginCallback<List<TsKvEntry>>() {
+            @Override
+            public void onSuccess(PluginContext ctx, List<TsKvEntry> data) {
+                Map<String, List<TsData>> result = new LinkedHashMap<>();
+                for (TsKvEntry entry : data) {
+                    List<TsData> vList = result.get(entry.getKey());
+                    if (vList == null) {
+                        vList = new ArrayList<>();
+                        result.put(entry.getKey(), vList);
+                    }
+                    vList.add(new TsData(entry.getTs(), entry.getValueAsString()));
+                }
+                msg.getResponseHolder().setResult(new ResponseEntity<>(result, HttpStatus.OK));
+            }
+
+            @Override
+            public void onFailure(PluginContext ctx, Exception e) {
+                log.error("Failed to fetch historical data", e);
+                msg.getResponseHolder().setResult(new ResponseEntity<>(HttpStatus.INTERNAL_SERVER_ERROR));
+            }
+        };
+    }
 }

extensions-core/src/main/java/org/thingsboard/server/extensions/core/plugin/telemetry/handlers/TelemetryRpcMsgHandler.java

@@ -18,7 +18,8 @@ package org.thingsboard.server.extensions.core.plugin.telemetry.handlers;
 import com.google.protobuf.InvalidProtocolBufferException;
 import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
-import org.thingsboard.server.common.data.id.DeviceId;
+import org.thingsboard.server.common.data.id.EntityId;
+import org.thingsboard.server.common.data.id.EntityIdFactory;
 import org.thingsboard.server.common.data.kv.*;
 import org.thingsboard.server.common.msg.cluster.ServerAddress;
 import org.thingsboard.server.extensions.api.plugins.PluginContext;
@@ -44,9 +45,10 @@ public class TelemetryRpcMsgHandler implements RpcMsgHandler {
 
     private static final int SUBSCRIPTION_CLAZZ = 1;
     private static final int ATTRIBUTES_UPDATE_CLAZZ = 2;
-    private static final int SUBSCRIPTION_UPDATE_CLAZZ = 3;
-    private static final int SESSION_CLOSE_CLAZZ = 4;
-    private static final int SUBSCRIPTION_CLOSE_CLAZZ = 5;
+    private static final int TIMESERIES_UPDATE_CLAZZ = 3;
+    private static final int SUBSCRIPTION_UPDATE_CLAZZ = 4;
+    private static final int SESSION_CLOSE_CLAZZ = 5;
+    private static final int SUBSCRIPTION_CLOSE_CLAZZ = 6;
 
     @Override
     public void process(PluginContext ctx, RpcMsg msg) {
@@ -60,6 +62,9 @@ public class TelemetryRpcMsgHandler implements RpcMsgHandler {
             case ATTRIBUTES_UPDATE_CLAZZ:
                 processAttributeUpdate(ctx, msg);
                 break;
+            case TIMESERIES_UPDATE_CLAZZ:
+                processTimeseriesUpdate(ctx, msg);
+                break;
             case SESSION_CLOSE_CLAZZ:
                 processSessionClose(ctx, msg);
                 break;
@@ -88,10 +93,21 @@ public class TelemetryRpcMsgHandler implements RpcMsgHandler {
         } catch (InvalidProtocolBufferException e) {
             throw new RuntimeException(e);
         }
-        subscriptionManager.onAttributesUpdateFromServer(ctx, DeviceId.fromString(proto.getDeviceId()), proto.getScope(),
+        subscriptionManager.onAttributesUpdateFromServer(ctx, EntityIdFactory.getByTypeAndId(proto.getEntityType(), proto.getEntityId()), proto.getScope(),
                 proto.getDataList().stream().map(this::toAttribute).collect(Collectors.toList()));
     }
 
+    private void processTimeseriesUpdate(PluginContext ctx, RpcMsg msg) {
+        TimeseriesUpdateProto proto;
+        try {
+            proto = TimeseriesUpdateProto.parseFrom(msg.getMsgData());
+        } catch (InvalidProtocolBufferException e) {
+            throw new RuntimeException(e);
+        }
+        subscriptionManager.onTimeseriesUpdateFromServer(ctx, EntityIdFactory.getByTypeAndId(proto.getEntityType(), proto.getEntityId()),
+                proto.getDataList().stream().map(this::toTimeseries).collect(Collectors.toList()));
+    }
+
     private void processSubscriptionCmd(PluginContext ctx, RpcMsg msg) {
         SubscriptionProto proto;
         try {
@@ -101,7 +117,7 @@ public class TelemetryRpcMsgHandler implements RpcMsgHandler {
         }
         Map<String, Long> statesMap = proto.getKeyStatesList().stream().collect(Collectors.toMap(SubscriptionKetStateProto::getKey, SubscriptionKetStateProto::getTs));
         Subscription subscription = new Subscription(
-                new SubscriptionState(proto.getSessionId(), proto.getSubscriptionId(), DeviceId.fromString(proto.getDeviceId()), SubscriptionType.valueOf(proto.getType()), proto.getAllKeys(), statesMap),
+                new SubscriptionState(proto.getSessionId(), proto.getSubscriptionId(), EntityIdFactory.getByTypeAndId(proto.getEntityType(), proto.getEntityId()), SubscriptionType.valueOf(proto.getType()), proto.getAllKeys(), statesMap),
                 false, msg.getServerAddress());
         subscriptionManager.addRemoteWsSubscription(ctx, msg.getServerAddress(), proto.getSessionId(), subscription);
     }
@@ -110,7 +126,8 @@ public class TelemetryRpcMsgHandler implements RpcMsgHandler {
         SubscriptionProto.Builder builder = SubscriptionProto.newBuilder();
         builder.setSessionId(sessionId);
         builder.setSubscriptionId(cmd.getSubscriptionId());
-        builder.setDeviceId(cmd.getDeviceId().toString());
+        builder.setEntityType(cmd.getEntityId().getEntityType().name());
+        builder.setEntityId(cmd.getEntityId().getId().toString());
         builder.setType(cmd.getType().name());
         builder.setAllKeys(cmd.isAllKeys());
         cmd.getKeyStates().entrySet().forEach(e -> builder.addKeyStates(SubscriptionKetStateProto.newBuilder().setKey(e.getKey()).setTs(e.getValue()).build()));
@@ -195,41 +212,62 @@ public class TelemetryRpcMsgHandler implements RpcMsgHandler {
         }
     }
 
-    public void onAttributesUpdate(PluginContext ctx, ServerAddress address, DeviceId deviceId, String scope, List<AttributeKvEntry> attributes) {
-        ctx.sendPluginRpcMsg(new RpcMsg(address, ATTRIBUTES_UPDATE_CLAZZ, getAttributesUpdateProto(deviceId, scope, attributes).toByteArray()));
+    public void onAttributesUpdate(PluginContext ctx, ServerAddress address, EntityId entityId, String scope, List<AttributeKvEntry> attributes) {
+        ctx.sendPluginRpcMsg(new RpcMsg(address, ATTRIBUTES_UPDATE_CLAZZ, getAttributesUpdateProto(entityId, scope, attributes).toByteArray()));
     }
 
-    private AttributeUpdateProto getAttributesUpdateProto(DeviceId deviceId, String scope, List<AttributeKvEntry> attributes) {
+    public void onTimeseriesUpdate(PluginContext ctx, ServerAddress address, EntityId entityId, List<TsKvEntry> tsKvEntries) {
+        ctx.sendPluginRpcMsg(new RpcMsg(address, TIMESERIES_UPDATE_CLAZZ, getTimeseriesUpdateProto(entityId, tsKvEntries).toByteArray()));
+    }
+
+    private TimeseriesUpdateProto getTimeseriesUpdateProto(EntityId entityId, List<TsKvEntry> tsKvEntries) {
+        TimeseriesUpdateProto.Builder builder = TimeseriesUpdateProto.newBuilder();
+        builder.setEntityId(entityId.getId().toString());
+        builder.setEntityType(entityId.getEntityType().name());
+        tsKvEntries.forEach(attr -> builder.addData(toKeyValueProto(attr.getTs(), attr).build()));
+        return builder.build();
+    }
+
+    private AttributeUpdateProto getAttributesUpdateProto(EntityId entityId, String scope, List<AttributeKvEntry> attributes) {
         AttributeUpdateProto.Builder builder = AttributeUpdateProto.newBuilder();
-        builder.setDeviceId(deviceId.toString());
+        builder.setEntityId(entityId.getId().toString());
+        builder.setEntityType(entityId.getEntityType().name());
         builder.setScope(scope);
-        attributes.forEach(
-                attr -> {
-                    AttributeUpdateValueListProto.Builder dataBuilder = AttributeUpdateValueListProto.newBuilder();
-                    dataBuilder.setKey(attr.getKey());
-                    dataBuilder.setTs(attr.getLastUpdateTs());
-                    dataBuilder.setValueType(attr.getDataType().ordinal());
-                    switch (attr.getDataType()) {
-                        case BOOLEAN:
-                            dataBuilder.setBoolValue(attr.getBooleanValue().get());
-                            break;
-                        case LONG:
-                            dataBuilder.setLongValue(attr.getLongValue().get());
-                            break;
-                        case DOUBLE:
-                            dataBuilder.setDoubleValue(attr.getDoubleValue().get());
-                            break;
-                        case STRING:
-                            dataBuilder.setStrValue(attr.getStrValue().get());
-                            break;
-                    }
-                    builder.addData(dataBuilder.build());
-                }
-        );
+        attributes.forEach(attr -> builder.addData(toKeyValueProto(attr.getLastUpdateTs(), attr).build()));
         return builder.build();
     }
 
-    private AttributeKvEntry toAttribute(AttributeUpdateValueListProto proto) {
+    private KeyValueProto.Builder toKeyValueProto(long ts, KvEntry attr) {
+        KeyValueProto.Builder dataBuilder = KeyValueProto.newBuilder();
+        dataBuilder.setKey(attr.getKey());
+        dataBuilder.setTs(ts);
+        dataBuilder.setValueType(attr.getDataType().ordinal());
+        switch (attr.getDataType()) {
+            case BOOLEAN:
+                dataBuilder.setBoolValue(attr.getBooleanValue().get());
+                break;
+            case LONG:
+                dataBuilder.setLongValue(attr.getLongValue().get());
+                break;
+            case DOUBLE:
+                dataBuilder.setDoubleValue(attr.getDoubleValue().get());
+                break;
+            case STRING:
+                dataBuilder.setStrValue(attr.getStrValue().get());
+                break;
+        }
+        return dataBuilder;
+    }
+
+    private AttributeKvEntry toAttribute(KeyValueProto proto) {
+        return new BaseAttributeKvEntry(getKvEntry(proto), proto.getTs());
+    }
+
+    private TsKvEntry toTimeseries(KeyValueProto proto) {
+        return new BasicTsKvEntry(proto.getTs(), getKvEntry(proto));
+    }
+
+    private KvEntry getKvEntry(KeyValueProto proto) {
         KvEntry entry = null;
         DataType type = DataType.values()[proto.getValueType()];
         switch (type) {
@@ -246,7 +284,7 @@ public class TelemetryRpcMsgHandler implements RpcMsgHandler {
                 entry = new StringDataEntry(proto.getKey(), proto.getStrValue());
                 break;
         }
-        return new BaseAttributeKvEntry(entry, proto.getTs());
+        return entry;
     }
 
 }

extensions-core/src/main/java/org/thingsboard/server/extensions/core/plugin/telemetry/handlers/TelemetryWebsocketMsgHandler.java

@@ -19,7 +19,8 @@ import com.fasterxml.jackson.core.JsonProcessingException;
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.util.StringUtils;
 import org.thingsboard.server.common.data.DataConstants;
-import org.thingsboard.server.common.data.id.DeviceId;
+import org.thingsboard.server.common.data.id.EntityId;
+import org.thingsboard.server.common.data.id.EntityIdFactory;
 import org.thingsboard.server.common.data.kv.*;
 import org.thingsboard.server.extensions.api.exception.UnauthorizedException;
 import org.thingsboard.server.extensions.api.plugins.PluginCallback;
@@ -101,8 +102,8 @@ public class TelemetryWebsocketMsgHandler extends DefaultWebsocketMsgHandler {
             if (cmd.isUnsubscribe()) {
                 unsubscribe(ctx, cmd, sessionId);
             } else if (validateSubscriptionCmd(ctx, sessionRef, cmd)) {
-                log.debug("[{}] fetching latest attributes ({}) values for device: {}", sessionId, cmd.getKeys(), cmd.getDeviceId());
-                DeviceId deviceId = DeviceId.fromString(cmd.getDeviceId());
+                EntityId entityId = EntityIdFactory.getByTypeAndId(cmd.getEntityType(), cmd.getEntityId());
+                log.debug("[{}] fetching latest attributes ({}) values for device: {}", sessionId, cmd.getKeys(), entityId);
                 Optional<Set<String>> keysOptional = getKeys(cmd);
                 SubscriptionState sub;
                 if (keysOptional.isPresent()) {
@@ -118,8 +119,8 @@ public class TelemetryWebsocketMsgHandler extends DefaultWebsocketMsgHandler {
                             keys.forEach(key -> subState.put(key, 0L));
                             attributesData.forEach(v -> subState.put(v.getKey(), v.getTs()));
 
-                            SubscriptionState sub = new SubscriptionState(sessionId, cmd.getCmdId(), deviceId, SubscriptionType.ATTRIBUTES, false, subState);
-                            subscriptionManager.addLocalWsSubscription(ctx, sessionId, deviceId, sub);
+                            SubscriptionState sub = new SubscriptionState(sessionId, cmd.getCmdId(), entityId, SubscriptionType.ATTRIBUTES, false, subState);
+                            subscriptionManager.addLocalWsSubscription(ctx, sessionId, entityId, sub);
                         }
 
                         @Override
@@ -138,9 +139,9 @@ public class TelemetryWebsocketMsgHandler extends DefaultWebsocketMsgHandler {
                     };
 
                     if (StringUtils.isEmpty(cmd.getScope())) {
-                        ctx.loadAttributes(deviceId, Arrays.asList(DataConstants.ALL_SCOPES), keys, callback);
+                        ctx.loadAttributes(entityId, Arrays.asList(DataConstants.ALL_SCOPES), keys, callback);
                     } else {
-                        ctx.loadAttributes(deviceId, cmd.getScope(), keys, callback);
+                        ctx.loadAttributes(entityId, cmd.getScope(), keys, callback);
                     }
                 } else {
                     PluginCallback<List<AttributeKvEntry>> callback = new PluginCallback<List<AttributeKvEntry>>() {
@@ -152,8 +153,8 @@ public class TelemetryWebsocketMsgHandler extends DefaultWebsocketMsgHandler {
                             Map<String, Long> subState = new HashMap<>(attributesData.size());
                             attributesData.forEach(v -> subState.put(v.getKey(), v.getTs()));
 
-                            SubscriptionState sub = new SubscriptionState(sessionId, cmd.getCmdId(), deviceId, SubscriptionType.ATTRIBUTES, true, subState);
-                            subscriptionManager.addLocalWsSubscription(ctx, sessionId, deviceId, sub);
+                            SubscriptionState sub = new SubscriptionState(sessionId, cmd.getCmdId(), entityId, SubscriptionType.ATTRIBUTES, true, subState);
+                            subscriptionManager.addLocalWsSubscription(ctx, sessionId, entityId, sub);
                         }
 
                         @Override
@@ -166,9 +167,9 @@ public class TelemetryWebsocketMsgHandler extends DefaultWebsocketMsgHandler {
                     };
 
                     if (StringUtils.isEmpty(cmd.getScope())) {
-                        ctx.loadAttributes(deviceId, Arrays.asList(DataConstants.ALL_SCOPES), callback);
+                        ctx.loadAttributes(entityId, Arrays.asList(DataConstants.ALL_SCOPES), callback);
                     } else {
-                        ctx.loadAttributes(deviceId, cmd.getScope(), callback);
+                        ctx.loadAttributes(entityId, cmd.getScope(), callback);
                     }
                 }
             }
@@ -183,33 +184,33 @@ public class TelemetryWebsocketMsgHandler extends DefaultWebsocketMsgHandler {
             if (cmd.isUnsubscribe()) {
                 unsubscribe(ctx, cmd, sessionId);
             } else if (validateSubscriptionCmd(ctx, sessionRef, cmd)) {
-                DeviceId deviceId = DeviceId.fromString(cmd.getDeviceId());
+                EntityId entityId = EntityIdFactory.getByTypeAndId(cmd.getEntityType(), cmd.getEntityId());
                 Optional<Set<String>> keysOptional = getKeys(cmd);
 
                 if (keysOptional.isPresent()) {
                     long startTs;
                     if (cmd.getTimeWindow() > 0) {
                         List<String> keys = new ArrayList<>(getKeys(cmd).orElse(Collections.emptySet()));
-                        log.debug("[{}] fetching timeseries data for last {} ms for keys: ({}) for device : {}", sessionId, cmd.getTimeWindow(), cmd.getKeys(), cmd.getDeviceId());
+                        log.debug("[{}] fetching timeseries data for last {} ms for keys: ({}) for device : {}", sessionId, cmd.getTimeWindow(), cmd.getKeys(), entityId);
                         startTs = cmd.getStartTs();
                         long endTs = cmd.getStartTs() + cmd.getTimeWindow();
                         List<TsKvQuery> queries = keys.stream().map(key -> new BaseTsKvQuery(key, startTs, endTs, cmd.getInterval(), getLimit(cmd.getLimit()), getAggregation(cmd.getAgg()))).collect(Collectors.toList());
-                        ctx.loadTimeseries(deviceId, queries, getSubscriptionCallback(sessionRef, cmd, sessionId, deviceId, startTs, keys));
+                        ctx.loadTimeseries(entityId, queries, getSubscriptionCallback(sessionRef, cmd, sessionId, entityId, startTs, keys));
                     } else {
                         List<String> keys = new ArrayList<>(getKeys(cmd).orElse(Collections.emptySet()));
                         startTs = System.currentTimeMillis();
-                        log.debug("[{}] fetching latest timeseries data for keys: ({}) for device : {}", sessionId, cmd.getKeys(), cmd.getDeviceId());
-                        ctx.loadLatestTimeseries(deviceId, keys, getSubscriptionCallback(sessionRef, cmd, sessionId, deviceId, startTs, keys));
+                        log.debug("[{}] fetching latest timeseries data for keys: ({}) for device : {}", sessionId, cmd.getKeys(), entityId);
+                        ctx.loadLatestTimeseries(entityId, keys, getSubscriptionCallback(sessionRef, cmd, sessionId, entityId, startTs, keys));
                     }
                 } else {
-                    ctx.loadLatestTimeseries(deviceId, new PluginCallback<List<TsKvEntry>>() {
+                    ctx.loadLatestTimeseries(entityId, new PluginCallback<List<TsKvEntry>>() {
                         @Override
                         public void onSuccess(PluginContext ctx, List<TsKvEntry> data) {
                             sendWsMsg(ctx, sessionRef, new SubscriptionUpdate(cmd.getCmdId(), data));
                             Map<String, Long> subState = new HashMap<>(data.size());
                             data.forEach(v -> subState.put(v.getKey(), v.getTs()));
-                            SubscriptionState sub = new SubscriptionState(sessionId, cmd.getCmdId(), deviceId, SubscriptionType.TIMESERIES, true, subState);
-                            subscriptionManager.addLocalWsSubscription(ctx, sessionId, deviceId, sub);
+                            SubscriptionState sub = new SubscriptionState(sessionId, cmd.getCmdId(), entityId, SubscriptionType.TIMESERIES, true, subState);
+                            subscriptionManager.addLocalWsSubscription(ctx, sessionId, entityId, sub);
                         }
 
                         @Override
@@ -230,7 +231,7 @@ public class TelemetryWebsocketMsgHandler extends DefaultWebsocketMsgHandler {
         }
     }
 
-    private PluginCallback<List<TsKvEntry>> getSubscriptionCallback(final PluginWebsocketSessionRef sessionRef, final TimeseriesSubscriptionCmd cmd, final String sessionId, final DeviceId deviceId, final long startTs, final List<String> keys) {
+    private PluginCallback<List<TsKvEntry>> getSubscriptionCallback(final PluginWebsocketSessionRef sessionRef, final TimeseriesSubscriptionCmd cmd, final String sessionId, final EntityId entityId, final long startTs, final List<String> keys) {
         return new PluginCallback<List<TsKvEntry>>() {
             @Override
             public void onSuccess(PluginContext ctx, List<TsKvEntry> data) {
@@ -239,8 +240,8 @@ public class TelemetryWebsocketMsgHandler extends DefaultWebsocketMsgHandler {
                 Map<String, Long> subState = new HashMap<>(keys.size());
                 keys.forEach(key -> subState.put(key, startTs));
                 data.forEach(v -> subState.put(v.getKey(), v.getTs()));
-                SubscriptionState sub = new SubscriptionState(sessionId, cmd.getCmdId(), deviceId, SubscriptionType.TIMESERIES, false, subState);
-                subscriptionManager.addLocalWsSubscription(ctx, sessionId, deviceId, sub);
+                SubscriptionState sub = new SubscriptionState(sessionId, cmd.getCmdId(), entityId, SubscriptionType.TIMESERIES, false, subState);
+                subscriptionManager.addLocalWsSubscription(ctx, sessionId, entityId, sub);
             }
 
             @Override
@@ -263,7 +264,7 @@ public class TelemetryWebsocketMsgHandler extends DefaultWebsocketMsgHandler {
             sendWsMsg(ctx, sessionRef, update);
             return;
         }
-        if (cmd.getDeviceId() == null || cmd.getDeviceId().isEmpty()) {
+        if (cmd.getEntityId() == null || cmd.getEntityId().isEmpty() || cmd.getEntityType() == null || cmd.getEntityType().isEmpty()) {
             SubscriptionUpdate update = new SubscriptionUpdate(cmd.getCmdId(), SubscriptionErrorCode.BAD_REQUEST,
                     "Device id is empty!");
             sendWsMsg(ctx, sessionRef, update);
@@ -275,10 +276,11 @@ public class TelemetryWebsocketMsgHandler extends DefaultWebsocketMsgHandler {
             sendWsMsg(ctx, sessionRef, update);
             return;
         }
-        DeviceId deviceId = DeviceId.fromString(cmd.getDeviceId());
+        EntityId entityId = EntityIdFactory.getByTypeAndId(cmd.getEntityType(), cmd.getEntityId());
         List<String> keys = new ArrayList<>(getKeys(cmd).orElse(Collections.emptySet()));
-        List<TsKvQuery> queries = keys.stream().map(key -> new BaseTsKvQuery(key, cmd.getStartTs(), cmd.getEndTs(), cmd.getInterval(), getLimit(cmd.getLimit()), getAggregation(cmd.getAgg()))).collect(Collectors.toList());
-        ctx.loadTimeseries(deviceId, queries, new PluginCallback<List<TsKvEntry>>() {
+        List<TsKvQuery> queries = keys.stream().map(key -> new BaseTsKvQuery(key, cmd.getStartTs(), cmd.getEndTs(), cmd.getInterval(), getLimit(cmd.getLimit()), getAggregation(cmd.getAgg())))
+                .collect(Collectors.toList());
+        ctx.loadTimeseries(entityId, queries, new PluginCallback<List<TsKvEntry>>() {
             @Override
             public void onSuccess(PluginContext ctx, List<TsKvEntry> data) {
                 sendWsMsg(ctx, sessionRef, new SubscriptionUpdate(cmd.getCmdId(), data));
@@ -321,7 +323,7 @@ public class TelemetryWebsocketMsgHandler extends DefaultWebsocketMsgHandler {
     }
 
     private void unsubscribe(PluginContext ctx, SubscriptionCmd cmd, String sessionId) {
-        if (cmd.getDeviceId() == null || cmd.getDeviceId().isEmpty()) {
+        if (cmd.getEntityId() == null || cmd.getEntityId().isEmpty()) {
             cleanupWebSocketSession(ctx, sessionId);
         } else {
             subscriptionManager.removeSubscription(ctx, sessionId, cmd.getCmdId());
@@ -329,7 +331,7 @@ public class TelemetryWebsocketMsgHandler extends DefaultWebsocketMsgHandler {
     }
 
     private boolean validateSubscriptionCmd(PluginContext ctx, PluginWebsocketSessionRef sessionRef, SubscriptionCmd cmd) {
-        if (cmd.getDeviceId() == null || cmd.getDeviceId().isEmpty()) {
+        if (cmd.getEntityId() == null || cmd.getEntityId().isEmpty()) {
             SubscriptionUpdate update = new SubscriptionUpdate(cmd.getCmdId(), SubscriptionErrorCode.BAD_REQUEST,
                     "Device id is empty!");
             sendWsMsg(ctx, sessionRef, update);

extensions-core/src/main/java/org/thingsboard/server/extensions/core/plugin/telemetry/sub/Subscription.java

@@ -18,6 +18,7 @@ package org.thingsboard.server.extensions.core.plugin.telemetry.sub;
 import lombok.AllArgsConstructor;
 import lombok.Data;
 import org.thingsboard.server.common.data.id.DeviceId;
+import org.thingsboard.server.common.data.id.EntityId;
 import org.thingsboard.server.common.msg.cluster.ServerAddress;
 
 import java.util.Map;
@@ -42,8 +43,8 @@ public class Subscription {
         return getSub().getSubscriptionId();
     }
 
-    public DeviceId getDeviceId() {
-        return getSub().getDeviceId();
+    public EntityId getEntityId() {
+        return getSub().getEntityId();
     }
 
     public SubscriptionType getType() {

extensions-core/src/main/java/org/thingsboard/server/extensions/core/plugin/telemetry/sub/SubscriptionState.java

@@ -16,9 +16,8 @@
 package org.thingsboard.server.extensions.core.plugin.telemetry.sub;
 
 import lombok.AllArgsConstructor;
-import lombok.Data;
 import lombok.Getter;
-import org.thingsboard.server.common.data.id.DeviceId;
+import org.thingsboard.server.common.data.id.EntityId;
 
 import java.util.Map;
 
@@ -30,7 +29,7 @@ public class SubscriptionState {
 
     @Getter private final String wsSessionId;
     @Getter private final int subscriptionId;
-    @Getter private final DeviceId deviceId;
+    @Getter private final EntityId entityId;
     @Getter private final SubscriptionType type;
     @Getter private final boolean allKeys;
     @Getter private final Map<String, Long> keyStates;
@@ -44,7 +43,7 @@ public class SubscriptionState {
 
         if (subscriptionId != that.subscriptionId) return false;
         if (wsSessionId != null ? !wsSessionId.equals(that.wsSessionId) : that.wsSessionId != null) return false;
-        if (deviceId != null ? !deviceId.equals(that.deviceId) : that.deviceId != null) return false;
+        if (entityId != null ? !entityId.equals(that.entityId) : that.entityId != null) return false;
         return type == that.type;
     }
 
@@ -52,7 +51,7 @@ public class SubscriptionState {
     public int hashCode() {
         int result = wsSessionId != null ? wsSessionId.hashCode() : 0;
         result = 31 * result + subscriptionId;
-        result = 31 * result + (deviceId != null ? deviceId.hashCode() : 0);
+        result = 31 * result + (entityId != null ? entityId.hashCode() : 0);
         result = 31 * result + (type != null ? type.hashCode() : 0);
         return result;
     }
@@ -61,7 +60,7 @@ public class SubscriptionState {
     public String toString() {
         return "SubscriptionState{" +
                 "type=" + type +
-                ", deviceId=" + deviceId +
+                ", entityId=" + entityId +
                 ", subscriptionId=" + subscriptionId +
                 ", wsSessionId='" + wsSessionId + '\'' +
                 '}';

extensions-core/src/main/proto/telemetry.proto

@@ -22,10 +22,11 @@ option java_outer_classname = "TelemetryPluginProtos";
 message SubscriptionProto {
   string sessionId = 1;
   int32 subscriptionId = 2;
-  string deviceId = 3;
-  string type = 4;
-  bool allKeys = 5;
-  repeated SubscriptionKetStateProto keyStates = 6;
+  string entityType = 3;
+  string entityId = 4;
+  string type = 5;
+  bool allKeys = 6;
+  repeated SubscriptionKetStateProto keyStates = 7;
 }
 
 message SubscriptionUpdateProto {
@@ -37,9 +38,16 @@ message SubscriptionUpdateProto {
 }
 
 message AttributeUpdateProto {
-    string deviceId = 1;
-    string scope = 2;
-    repeated AttributeUpdateValueListProto data = 3;
+    string entityType = 1;
+    string entityId = 2;
+    string scope = 3;
+    repeated KeyValueProto data = 4;
+}
+
+message TimeseriesUpdateProto {
+    string entityType = 1;
+    string entityId = 2;
+    repeated KeyValueProto data = 4;
 }
 
 message SessionCloseProto {
@@ -62,7 +70,7 @@ message SubscriptionUpdateValueListProto {
     repeated string value = 3;
 }
 
-message AttributeUpdateValueListProto {
+message KeyValueProto {
     string key = 1;
     int64 ts = 2;
     int32 valueType = 3;

transport/mqtt/src/main/java/org/thingsboard/server/transport/mqtt/session/GatewaySessionCtx.java

@@ -82,6 +82,7 @@ public class GatewaySessionCtx {
             });
             GatewayDeviceSessionCtx ctx = new GatewayDeviceSessionCtx(this, device);
             devices.put(deviceName, ctx);
+            log.debug("[{}] Added device [{}] to the gateway session", gatewaySessionId, deviceName);
             processor.process(new BasicToDeviceActorSessionMsg(device, new BasicAdaptorToSessionActorMsg(ctx, new AttributesSubscribeMsg())));
             processor.process(new BasicToDeviceActorSessionMsg(device, new BasicAdaptorToSessionActorMsg(ctx, new RpcSubscribeMsg())));
         }
@@ -94,6 +95,9 @@ public class GatewaySessionCtx {
         if (deviceSessionCtx != null) {
             processor.process(SessionCloseMsg.onDisconnect(deviceSessionCtx.getSessionId()));
             deviceSessionCtx.setClosed(true);
+            log.debug("[{}] Removed device [{}] from the gateway session", gatewaySessionId, deviceName);
+        } else {
+            log.debug("[{}] Device [{}] was already removed from the gateway session", gatewaySessionId, deviceName);
         }
         ack(msg);
     }
@@ -191,7 +195,8 @@ public class GatewaySessionCtx {
 
     private String checkDeviceConnected(String deviceName) {
         if (!devices.containsKey(deviceName)) {
-            throw new RuntimeException("Device is not connected!");
+            log.debug("[{}] Missing device [{}] for the gateway session", gatewaySessionId, deviceName);
+            throw new RuntimeException("Device " + deviceName + " is not connected!");
         } else {
             return deviceName;
         }

ui/src/app/api/asset.service.js

@@ -0,0 +1,261 @@
+/*
+ * Copyright © 2016-2017 The Thingsboard Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+export default angular.module('thingsboard.api.asset', [])
+    .factory('assetService', AssetService)
+    .name;
+
+/*@ngInject*/
+function AssetService($http, $q, customerService, userService) {
+
+    var service = {
+        getAsset: getAsset,
+        getAssets: getAssets,
+        saveAsset: saveAsset,
+        deleteAsset: deleteAsset,
+        assignAssetToCustomer: assignAssetToCustomer,
+        unassignAssetFromCustomer: unassignAssetFromCustomer,
+        makeAssetPublic: makeAssetPublic,
+        getTenantAssets: getTenantAssets,
+        getCustomerAssets: getCustomerAssets,
+        findByQuery: findByQuery,
+        fetchAssetsByNameFilter: fetchAssetsByNameFilter
+    }
+
+    return service;
+
+    function getAsset(assetId, ignoreErrors, config) {
+        var deferred = $q.defer();
+        var url = '/api/asset/' + assetId;
+        if (!config) {
+            config = {};
+        }
+        config = Object.assign(config, { ignoreErrors: ignoreErrors });
+        $http.get(url, config).then(function success(response) {
+            deferred.resolve(response.data);
+        }, function fail() {
+            deferred.reject();
+        });
+        return deferred.promise;
+    }
+
+    function getAssets(assetIds, config) {
+        var deferred = $q.defer();
+        var ids = '';
+        for (var i=0;i<assetIds.length;i++) {
+            if (i>0) {
+                ids += ',';
+            }
+            ids += assetIds[i];
+        }
+        var url = '/api/assets?assetIds=' + ids;
+        $http.get(url, config).then(function success(response) {
+            var assets = response.data;
+            assets.sort(function (asset1, asset2) {
+                var id1 =  asset1.id.id;
+                var id2 =  asset2.id.id;
+                var index1 = assetIds.indexOf(id1);
+                var index2 = assetIds.indexOf(id2);
+                return index1 - index2;
+            });
+            deferred.resolve(assets);
+        }, function fail() {
+            deferred.reject();
+        });
+        return deferred.promise;
+    }
+
+    function saveAsset(asset, ignoreErrors, config) {
+        var deferred = $q.defer();
+        var url = '/api/asset';
+        if (!config) {
+            config = {};
+        }
+        config = Object.assign(config, { ignoreErrors: ignoreErrors });
+        $http.post(url, asset, config).then(function success(response) {
+            deferred.resolve(response.data);
+        }, function fail() {
+            deferred.reject();
+        });
+        return deferred.promise;
+    }
+
+    function deleteAsset(assetId, ignoreErrors, config) {
+        var deferred = $q.defer();
+        var url = '/api/asset/' + assetId;
+        if (!config) {
+            config = {};
+        }
+        config = Object.assign(config, { ignoreErrors: ignoreErrors });
+        $http.delete(url, config).then(function success() {
+            deferred.resolve();
+        }, function fail() {
+            deferred.reject();
+        });
+        return deferred.promise;
+    }
+
+    function assignAssetToCustomer(customerId, assetId, ignoreErrors, config) {
+        var deferred = $q.defer();
+        var url = '/api/customer/' + customerId + '/asset/' + assetId;
+        if (!config) {
+            config = {};
+        }
+        config = Object.assign(config, { ignoreErrors: ignoreErrors });
+        $http.post(url, null, config).then(function success(response) {
+            deferred.resolve(response.data);
+        }, function fail() {
+            deferred.reject();
+        });
+        return deferred.promise;
+    }
+
+    function unassignAssetFromCustomer(assetId, ignoreErrors, config) {
+        var deferred = $q.defer();
+        var url = '/api/customer/asset/' + assetId;
+        if (!config) {
+            config = {};
+        }
+        config = Object.assign(config, { ignoreErrors: ignoreErrors });
+        $http.delete(url, config).then(function success(response) {
+            deferred.resolve(response.data);
+        }, function fail() {
+            deferred.reject();
+        });
+        return deferred.promise;
+    }
+
+    function makeAssetPublic(assetId, ignoreErrors, config) {
+        var deferred = $q.defer();
+        var url = '/api/customer/public/asset/' + assetId;
+        if (!config) {
+            config = {};
+        }
+        config = Object.assign(config, { ignoreErrors: ignoreErrors });
+        $http.post(url, null, config).then(function success(response) {
+            deferred.resolve(response.data);
+        }, function fail() {
+            deferred.reject();
+        });
+        return deferred.promise;
+    }
+
+    function getTenantAssets(pageLink, applyCustomersInfo, config) {
+        var deferred = $q.defer();
+        var url = '/api/tenant/assets?limit=' + pageLink.limit;
+        if (angular.isDefined(pageLink.textSearch)) {
+            url += '&textSearch=' + pageLink.textSearch;
+        }
+        if (angular.isDefined(pageLink.idOffset)) {
+            url += '&idOffset=' + pageLink.idOffset;
+        }
+        if (angular.isDefined(pageLink.textOffset)) {
+            url += '&textOffset=' + pageLink.textOffset;
+        }
+        $http.get(url, config).then(function success(response) {
+            if (applyCustomersInfo) {
+                customerService.applyAssignedCustomersInfo(response.data.data).then(
+                    function success(data) {
+                        response.data.data = data;
+                        deferred.resolve(response.data);
+                    },
+                    function fail() {
+                        deferred.reject();
+                    }
+                );
+            } else {
+                deferred.resolve(response.data);
+            }
+        }, function fail() {
+            deferred.reject();
+        });
+        return deferred.promise;
+    }
+
+    function getCustomerAssets(customerId, pageLink, applyCustomersInfo, config) {
+        var deferred = $q.defer();
+        var url = '/api/customer/' + customerId + '/assets?limit=' + pageLink.limit;
+        if (angular.isDefined(pageLink.textSearch)) {
+            url += '&textSearch=' + pageLink.textSearch;
+        }
+        if (angular.isDefined(pageLink.idOffset)) {
+            url += '&idOffset=' + pageLink.idOffset;
+        }
+        if (angular.isDefined(pageLink.textOffset)) {
+            url += '&textOffset=' + pageLink.textOffset;
+        }
+        $http.get(url, config).then(function success(response) {
+            if (applyCustomersInfo) {
+                customerService.applyAssignedCustomerInfo(response.data.data, customerId).then(
+                    function success(data) {
+                        response.data.data = data;
+                        deferred.resolve(response.data);
+                    },
+                    function fail() {
+                        deferred.reject();
+                    }
+                );
+            } else {
+                deferred.resolve(response.data);
+            }
+        }, function fail() {
+            deferred.reject();
+        });
+
+        return deferred.promise;
+    }
+
+    function findByQuery(query, ignoreErrors, config) {
+        var deferred = $q.defer();
+        var url = '/api/assets';
+        if (!config) {
+            config = {};
+        }
+        config = Object.assign(config, { ignoreErrors: ignoreErrors });
+        $http.post(url, query, config).then(function success(response) {
+            deferred.resolve(response.data);
+        }, function fail() {
+            deferred.reject();
+        });
+        return deferred.promise;
+    }
+
+    function fetchAssetsByNameFilter(assetNameFilter, limit, applyCustomersInfo, config) {
+        var deferred = $q.defer();
+        var user = userService.getCurrentUser();
+        var promise;
+        var pageLink = {limit: limit, textSearch: assetNameFilter};
+        if (user.authority === 'CUSTOMER_USER') {
+            var customerId = user.customerId;
+            promise = getCustomerAssets(customerId, pageLink, applyCustomersInfo, config);
+        } else {
+            promise = getTenantAssets(pageLink, applyCustomersInfo, config);
+        }
+        promise.then(
+            function success(result) {
+                if (result.data && result.data.length > 0) {
+                    deferred.resolve(result.data);
+                } else {
+                    deferred.resolve(null);
+                }
+            },
+            function fail() {
+                deferred.resolve(null);
+            }
+        );
+        return deferred.promise;
+    }
+
+}

ui/src/app/api/attribute.service.js

@@ -0,0 +1,234 @@
+/*
+ * Copyright © 2016-2017 The Thingsboard Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+export default angular.module('thingsboard.api.attribute', [])
+    .factory('attributeService', AttributeService)
+    .name;
+
+/*@ngInject*/
+function AttributeService($http, $q, $filter, types, telemetryWebsocketService) {
+
+    var entityAttributesSubscriptionMap = {};
+
+    var service = {
+        getEntityKeys: getEntityKeys,
+        getEntityTimeseriesValues: getEntityTimeseriesValues,
+        getEntityAttributes: getEntityAttributes,
+        subscribeForEntityAttributes: subscribeForEntityAttributes,
+        unsubscribeForEntityAttributes: unsubscribeForEntityAttributes,
+        saveEntityAttributes: saveEntityAttributes,
+        deleteEntityAttributes: deleteEntityAttributes
+    }
+
+    return service;
+
+    function getEntityKeys(entityType, entityId, query, type) {
+        var deferred = $q.defer();
+        var url = '/api/plugins/telemetry/' + entityType + '/' + entityId + '/keys/';
+        if (type === types.dataKeyType.timeseries) {
+            url += 'timeseries';
+        } else if (type === types.dataKeyType.attribute) {
+            url += 'attributes';
+        }
+        $http.get(url, null).then(function success(response) {
+            var result = [];
+            if (response.data) {
+                if (query) {
+                    var dataKeys = response.data;
+                    var lowercaseQuery = angular.lowercase(query);
+                    for (var i=0; i<dataKeys.length;i++) {
+                        if (angular.lowercase(dataKeys[i]).indexOf(lowercaseQuery) === 0) {
+                            result.push(dataKeys[i]);
+                        }
+                    }
+                } else {
+                    result = response.data;
+                }
+            }
+            deferred.resolve(result);
+        }, function fail(response) {
+            deferred.reject(response.data);
+        });
+        return deferred.promise;
+    }
+
+    function getEntityTimeseriesValues(entityType, entityId, keys, startTs, endTs, limit) {
+        var deferred = $q.defer();
+        var url = '/api/plugins/telemetry/' + entityType + '/' + entityId + '/values/timeseries';
+        url += '?keys=' + keys;
+        url += '&startTs=' + startTs;
+        url += '&endTs=' + endTs;
+        if (angular.isDefined(limit)) {
+            url += '&limit=' + limit;
+        }
+        $http.get(url, null).then(function success(response) {
+            deferred.resolve(response.data);
+        }, function fail(response) {
+            deferred.reject(response.data);
+        });
+        return deferred.promise;
+    }
+
+    function processAttributes(attributes, query, deferred, successCallback, update, apply) {
+        attributes = $filter('orderBy')(attributes, query.order);
+        if (query.search != null) {
+            attributes = $filter('filter')(attributes, {key: query.search});
+        }
+        var responseData = {
+            count: attributes.length
+        }
+        var startIndex = query.limit * (query.page - 1);
+        responseData.data = attributes.slice(startIndex, startIndex + query.limit);
+        successCallback(responseData, update, apply);
+        if (deferred) {
+            deferred.resolve();
+        }
+    }
+
+    function getEntityAttributes(entityType, entityId, attributeScope, query, successCallback, config) {
+        var deferred = $q.defer();
+        var subscriptionId = entityType + entityId + attributeScope;
+        var eas = entityAttributesSubscriptionMap[subscriptionId];
+        if (eas) {
+            if (eas.attributes) {
+                processAttributes(eas.attributes, query, deferred, successCallback);
+                eas.subscriptionCallback = function(attributes) {
+                    processAttributes(attributes, query, null, successCallback, true, true);
+                }
+            } else {
+                eas.subscriptionCallback = function(attributes) {
+                    processAttributes(attributes, query, deferred, successCallback, false, true);
+                    eas.subscriptionCallback = function(attributes) {
+                        processAttributes(attributes, query, null, successCallback, true, true);
+                    }
+                }
+            }
+        } else {
+            var url = '/api/plugins/telemetry/' + entityType + '/' + entityId + '/values/attributes/' + attributeScope;
+            $http.get(url, config).then(function success(response) {
+                processAttributes(response.data, query, deferred, successCallback);
+            }, function fail() {
+                deferred.reject();
+            });
+        }
+        return deferred;
+    }
+
+    function onSubscriptionData(data, subscriptionId) {
+        var entityAttributesSubscription = entityAttributesSubscriptionMap[subscriptionId];
+        if (entityAttributesSubscription) {
+            if (!entityAttributesSubscription.attributes) {
+                entityAttributesSubscription.attributes = [];
+                entityAttributesSubscription.keys = {};
+            }
+            var attributes = entityAttributesSubscription.attributes;
+            var keys = entityAttributesSubscription.keys;
+            for (var key in data) {
+                var index = keys[key];
+                var attribute;
+                if (index > -1) {
+                    attribute = attributes[index];
+                } else {
+                    attribute = {
+                        key: key
+                    };
+                    index = attributes.push(attribute)-1;
+                    keys[key] = index;
+                }
+                var attrData = data[key][0];
+                attribute.lastUpdateTs = attrData[0];
+                attribute.value = attrData[1];
+            }
+            if (entityAttributesSubscription.subscriptionCallback) {
+                entityAttributesSubscription.subscriptionCallback(attributes);
+            }
+        }
+    }
+
+    function subscribeForEntityAttributes(entityType, entityId, attributeScope) {
+        var subscriptionId = entityType + entityId + attributeScope;
+        var entityAttributesSubscription = entityAttributesSubscriptionMap[subscriptionId];
+        if (!entityAttributesSubscription) {
+            var subscriptionCommand = {
+                entityType: entityType,
+                entityId: entityId,
+                scope: attributeScope
+            };
+
+            var type = attributeScope === types.latestTelemetry.value ?
+                types.dataKeyType.timeseries : types.dataKeyType.attribute;
+
+            var subscriber = {
+                subscriptionCommand: subscriptionCommand,
+                type: type,
+                onData: function (data) {
+                    if (data.data) {
+                        onSubscriptionData(data.data, subscriptionId);
+                    }
+                }
+            };
+            entityAttributesSubscription = {
+                subscriber: subscriber,
+                attributes: null
+            };
+            entityAttributesSubscriptionMap[subscriptionId] = entityAttributesSubscription;
+            telemetryWebsocketService.subscribe(subscriber);
+        }
+        return subscriptionId;
+    }
+
+    function unsubscribeForEntityAttributes(subscriptionId) {
+        var entityAttributesSubscription = entityAttributesSubscriptionMap[subscriptionId];
+        if (entityAttributesSubscription) {
+            telemetryWebsocketService.unsubscribe(entityAttributesSubscription.subscriber);
+            delete entityAttributesSubscriptionMap[subscriptionId];
+        }
+    }
+
+    function saveEntityAttributes(entityType, entityId, attributeScope, attributes) {
+        var deferred = $q.defer();
+        var attributesData = {};
+        for (var a=0; a<attributes.length;a++) {
+            attributesData[attributes[a].key] = attributes[a].value;
+        }
+        var url = '/api/plugins/telemetry/' + entityType + '/' + entityId + '/' + attributeScope;
+        $http.post(url, attributesData).then(function success(response) {
+            deferred.resolve(response.data);
+        }, function fail(response) {
+            deferred.reject(response.data);
+        });
+        return deferred.promise;
+    }
+
+    function deleteEntityAttributes(entityType, entityId, attributeScope, attributes) {
+        var deferred = $q.defer();
+        var keys = '';
+        for (var i = 0; i < attributes.length; i++) {
+            if (i > 0) {
+                keys += ',';
+            }
+            keys += attributes[i].key;
+        }
+        var url = '/api/plugins/telemetry/' + entityType + '/' + entityId + '/' + attributeScope + '?keys=' + keys;
+        $http.delete(url).then(function success() {
+            deferred.resolve();
+        }, function fail() {
+            deferred.reject();
+        });
+        return deferred.promise;
+    }
+
+
+}

ui/src/app/api/datasource.service.js

@@ -35,11 +35,10 @@ function DatasourceService($timeout, $filter, $log, telemetryWebsocketService, t
 
     return service;
 
-
     function subscribeToDatasource(listener) {
         var datasource = listener.datasource;
 
-        if (datasource.type === types.datasourceType.device && !listener.deviceId) {
+        if (datasource.type === types.datasourceType.entity && (!listener.entityId || !listener.entityType)) {
             return;
         }
 
@@ -64,8 +63,9 @@ function DatasourceService($timeout, $filter, $log, telemetryWebsocketService, t
         if (listener.subscriptionType === types.widgetType.timeseries.value) {
             datasourceSubscription.subscriptionTimewindow = angular.copy(listener.subscriptionTimewindow);
         }
-        if (datasourceSubscription.datasourceType === types.datasourceType.device) {
-            datasourceSubscription.deviceId = listener.deviceId;
+        if (datasourceSubscription.datasourceType === types.datasourceType.entity) {
+            datasourceSubscription.entityType = listener.entityType;
+            datasourceSubscription.entityId = listener.entityId;
         }
 
         listener.datasourceSubscriptionKey = utils.objectHashCode(datasourceSubscription);
@@ -141,7 +141,7 @@ function DatasourceSubscription(datasourceSubscription, telemetryWebsocketServic
                     dataKey.postFunc = new Function("time", "value", "prevValue", dataKey.postFuncBody);
                 }
             }
-            if (datasourceType === types.datasourceType.device || datasourceSubscription.type === types.widgetType.timeseries.value) {
+            if (datasourceType === types.datasourceType.entity || datasourceSubscription.type === types.widgetType.timeseries.value) {
                 if (datasourceType === types.datasourceType.function) {
                     key = dataKey.name + '_' + dataKey.index + '_' + dataKey.type;
                 } else {
@@ -191,7 +191,7 @@ function DatasourceSubscription(datasourceSubscription, telemetryWebsocketServic
     function syncListener(listener) {
         var key;
         var dataKey;
-        if (datasourceType === types.datasourceType.device || datasourceSubscription.type === types.widgetType.timeseries.value) {
+        if (datasourceType === types.datasourceType.entity || datasourceSubscription.type === types.widgetType.timeseries.value) {
             for (key in dataKeys) {
                 var dataKeysList = dataKeys[key];
                 for (var i = 0; i < dataKeysList.length; i++) {
@@ -220,7 +220,7 @@ function DatasourceSubscription(datasourceSubscription, telemetryWebsocketServic
         var tsKeyNames = [];
         var dataKey;
 
-        if (datasourceType === types.datasourceType.device) {
+        if (datasourceType === types.datasourceType.entity) {
 
             //send subscribe command
 
@@ -252,7 +252,8 @@ function DatasourceSubscription(datasourceSubscription, telemetryWebsocketServic
                 if (history) {
 
                     var historyCommand = {
-                        deviceId: datasourceSubscription.deviceId,
+                        entityType: datasourceSubscription.entityType,
+                        entityId: datasourceSubscription.entityId,
                         keys: tsKeys,
                         startTs: subsTw.fixedWindow.startTimeMs,
                         endTs: subsTw.fixedWindow.endTimeMs,
@@ -282,7 +283,8 @@ function DatasourceSubscription(datasourceSubscription, telemetryWebsocketServic
                 } else {
 
                     subscriptionCommand = {
-                        deviceId: datasourceSubscription.deviceId,
+                        entityType: datasourceSubscription.entityType,
+                        entityId: datasourceSubscription.entityId,
                         keys: tsKeys
                     };
 
@@ -328,7 +330,8 @@ function DatasourceSubscription(datasourceSubscription, telemetryWebsocketServic
             if (attrKeys.length > 0) {
 
                 subscriptionCommand = {
-                    deviceId: datasourceSubscription.deviceId,
+                    entityType: datasourceSubscription.entityType,
+                    entityId: datasourceSubscription.entityId,
                     keys: attrKeys
                 };
 
@@ -404,7 +407,7 @@ function DatasourceSubscription(datasourceSubscription, telemetryWebsocketServic
             $timeout.cancel(timer);
             timer = null;
         }
-        if (datasourceType === types.datasourceType.device) {
+        if (datasourceType === types.datasourceType.entity) {
             for (var cmdId in subscribers) {
                 var subscriber = subscribers[cmdId];
                 telemetryWebsocketService.unsubscribe(subscriber);

ui/src/app/api/device.service.js

@@ -20,10 +20,7 @@ export default angular.module('thingsboard.api.device', [thingsboardTypes])
     .name;
 
 /*@ngInject*/
-function DeviceService($http, $q, $filter, userService, customerService, telemetryWebsocketService, types) {
-
-
-    var deviceAttributesSubscriptionMap = {};
+function DeviceService($http, $q, attributeService, customerService, types) {
 
     var service = {
         assignDeviceToCustomer: assignDeviceToCustomer,
@@ -31,12 +28,7 @@ function DeviceService($http, $q, $filter, userService, customerService, telemet
         getCustomerDevices: getCustomerDevices,
         getDevice: getDevice,
         getDevices: getDevices,
-        processDeviceAliases: processDeviceAliases,
-        checkDeviceAlias: checkDeviceAlias,
-        fetchAliasDeviceByNameFilter: fetchAliasDeviceByNameFilter,
         getDeviceCredentials: getDeviceCredentials,
-        getDeviceKeys: getDeviceKeys,
-        getDeviceTimeseriesValues: getDeviceTimeseriesValues,
         getTenantDevices: getTenantDevices,
         saveDevice: saveDevice,
         saveDeviceCredentials: saveDeviceCredentials,
@@ -159,174 +151,6 @@ function DeviceService($http, $q, $filter, userService, customerService, telemet
         return deferred.promise;
     }
 
-    function fetchAliasDeviceByNameFilter(deviceNameFilter, limit, applyCustomersInfo, config) {
-        var deferred = $q.defer();
-        var user = userService.getCurrentUser();
-        var promise;
-        var pageLink = {limit: limit, textSearch: deviceNameFilter};
-        if (user.authority === 'CUSTOMER_USER') {
-            var customerId = user.customerId;
-            promise = getCustomerDevices(customerId, pageLink, applyCustomersInfo, config);
-        } else {
-            promise = getTenantDevices(pageLink, applyCustomersInfo, config);
-        }
-        promise.then(
-            function success(result) {
-                if (result.data && result.data.length > 0) {
-                    deferred.resolve(result.data);
-                } else {
-                    deferred.resolve(null);
-                }
-            },
-            function fail() {
-                deferred.resolve(null);
-            }
-        );
-        return deferred.promise;
-    }
-
-    function deviceToDeviceInfo(device) {
-        return { name: device.name, id: device.id.id };
-    }
-
-    function devicesToDevicesInfo(devices) {
-        var devicesInfo = [];
-        for (var d = 0; d < devices.length; d++) {
-            devicesInfo.push(deviceToDeviceInfo(devices[d]));
-        }
-        return devicesInfo;
-    }
-
-    function processDeviceAlias(index, aliasIds, deviceAliases, resolution, deferred) {
-        if (index < aliasIds.length) {
-            var aliasId = aliasIds[index];
-            var deviceAlias = deviceAliases[aliasId];
-            var alias = deviceAlias.alias;
-            if (!deviceAlias.deviceFilter) {
-                getDevice(deviceAlias.deviceId).then(
-                    function success(device) {
-                        var resolvedAlias = {alias: alias, deviceId: device.id.id};
-                        resolution.aliasesInfo.deviceAliases[aliasId] = resolvedAlias;
-                        resolution.aliasesInfo.deviceAliasesInfo[aliasId] = [
-                            deviceToDeviceInfo(device)
-                        ];
-                        index++;
-                        processDeviceAlias(index, aliasIds, deviceAliases, resolution, deferred);
-                    },
-                    function fail() {
-                        if (!resolution.error) {
-                            resolution.error = 'dashboard.invalid-aliases-config';
-                        }
-                        index++;
-                        processDeviceAlias(index, aliasIds, deviceAliases, resolution, deferred);
-                    }
-                );
-            } else {
-                var deviceFilter = deviceAlias.deviceFilter;
-                if (deviceFilter.useFilter) {
-                    var deviceNameFilter = deviceFilter.deviceNameFilter;
-                    fetchAliasDeviceByNameFilter(deviceNameFilter, 100, false).then(
-                        function(devices) {
-                            if (devices && devices != null) {
-                                var resolvedAlias = {alias: alias, deviceId: devices[0].id.id};
-                                resolution.aliasesInfo.deviceAliases[aliasId] = resolvedAlias;
-                                resolution.aliasesInfo.deviceAliasesInfo[aliasId] = devicesToDevicesInfo(devices);
-                                index++;
-                                processDeviceAlias(index, aliasIds, deviceAliases, resolution, deferred);
-                            } else {
-                                if (!resolution.error) {
-                                    resolution.error = 'dashboard.invalid-aliases-config';
-                                }
-                                index++;
-                                processDeviceAlias(index, aliasIds, deviceAliases, resolution, deferred);
-                            }
-                        });
-                } else {
-                    var deviceList = deviceFilter.deviceList;
-                    getDevices(deviceList).then(
-                        function success(devices) {
-                            if (devices && devices.length > 0) {
-                                var resolvedAlias = {alias: alias, deviceId: devices[0].id.id};
-                                resolution.aliasesInfo.deviceAliases[aliasId] = resolvedAlias;
-                                resolution.aliasesInfo.deviceAliasesInfo[aliasId] = devicesToDevicesInfo(devices);
-                                index++;
-                                processDeviceAlias(index, aliasIds, deviceAliases, resolution, deferred);
-                            } else {
-                                if (!resolution.error) {
-                                    resolution.error = 'dashboard.invalid-aliases-config';
-                                }
-                                index++;
-                                processDeviceAlias(index, aliasIds, deviceAliases, resolution, deferred);
-                            }
-                        },
-                        function fail() {
-                            if (!resolution.error) {
-                                resolution.error = 'dashboard.invalid-aliases-config';
-                            }
-                            index++;
-                            processDeviceAlias(index, aliasIds, deviceAliases, resolution, deferred);
-                        }
-                    );
-                }
-            }
-        } else {
-            deferred.resolve(resolution);
-        }
-    }
-
-    function processDeviceAliases(deviceAliases) {
-        var deferred = $q.defer();
-        var resolution = {
-            aliasesInfo: {
-                deviceAliases: {},
-                deviceAliasesInfo: {}
-            }
-        };
-        var aliasIds = [];
-        if (deviceAliases) {
-            for (var aliasId in deviceAliases) {
-                aliasIds.push(aliasId);
-            }
-        }
-        processDeviceAlias(0, aliasIds, deviceAliases, resolution, deferred);
-        return deferred.promise;
-    }
-
-    function checkDeviceAlias(deviceAlias) {
-        var deferred = $q.defer();
-        var deviceFilter;
-        if (deviceAlias.deviceId) {
-            deviceFilter = {
-                useFilter: false,
-                deviceNameFilter: '',
-                deviceList: [deviceAlias.deviceId]
-            }
-        } else {
-            deviceFilter = deviceAlias.deviceFilter;
-        }
-        var promise;
-        if (deviceFilter.useFilter) {
-            var deviceNameFilter = deviceFilter.deviceNameFilter;
-            promise = fetchAliasDeviceByNameFilter(deviceNameFilter, 1, false);
-        } else {
-            var deviceList = deviceFilter.deviceList;
-            promise = getDevices(deviceList);
-        }
-        promise.then(
-            function success(devices) {
-                if (devices && devices.length > 0) {
-                    deferred.resolve(true);
-                } else {
-                    deferred.resolve(false);
-                }
-            },
-            function fail() {
-                deferred.resolve(false);
-            }
-        );
-        return deferred.promise;
-    }
-
     function saveDevice(device) {
         var deferred = $q.defer();
         var url = '/api/device';
@@ -404,198 +228,24 @@ function DeviceService($http, $q, $filter, userService, customerService, telemet
         return deferred.promise;
     }
 
-    function getDeviceKeys(deviceId, query, type) {
-        var deferred = $q.defer();
-        var url = '/api/plugins/telemetry/' + deviceId + '/keys/';
-        if (type === types.dataKeyType.timeseries) {
-            url += 'timeseries';
-        } else if (type === types.dataKeyType.attribute) {
-            url += 'attributes';
-        }
-        $http.get(url, null).then(function success(response) {
-            var result = [];
-            if (response.data) {
-                if (query) {
-                    var dataKeys = response.data;
-                    var lowercaseQuery = angular.lowercase(query);
-                    for (var i=0; i<dataKeys.length;i++) {
-                        if (angular.lowercase(dataKeys[i]).indexOf(lowercaseQuery) === 0) {
-                            result.push(dataKeys[i]);
-                        }
-                    }
-                } else {
-                    result = response.data;
-                }
-            }
-            deferred.resolve(result);
-        }, function fail(response) {
-            deferred.reject(response.data);
-        });
-        return deferred.promise;
-    }
-
-    function getDeviceTimeseriesValues(deviceId, keys, startTs, endTs, limit) {
-        var deferred = $q.defer();
-        var url = '/api/plugins/telemetry/' + deviceId + '/values/timeseries';
-        url += '?keys=' + keys;
-        url += '&startTs=' + startTs;
-        url += '&endTs=' + endTs;
-        if (angular.isDefined(limit)) {
-            url += '&limit=' + limit;
-        }
-        $http.get(url, null).then(function success(response) {
-            deferred.resolve(response.data);
-        }, function fail(response) {
-            deferred.reject(response.data);
-        });
-        return deferred.promise;
-    }
-
-    function processDeviceAttributes(attributes, query, deferred, successCallback, update, apply) {
-        attributes = $filter('orderBy')(attributes, query.order);
-        if (query.search != null) {
-            attributes = $filter('filter')(attributes, {key: query.search});
-        }
-        var responseData = {
-            count: attributes.length
-        }
-        var startIndex = query.limit * (query.page - 1);
-        responseData.data = attributes.slice(startIndex, startIndex + query.limit);
-        successCallback(responseData, update, apply);
-        if (deferred) {
-            deferred.resolve();
-        }
-    }
-
     function getDeviceAttributes(deviceId, attributeScope, query, successCallback, config) {
-        var deferred = $q.defer();
-        var subscriptionId = deviceId + attributeScope;
-        var das = deviceAttributesSubscriptionMap[subscriptionId];
-        if (das) {
-            if (das.attributes) {
-                processDeviceAttributes(das.attributes, query, deferred, successCallback);
-                das.subscriptionCallback = function(attributes) {
-                    processDeviceAttributes(attributes, query, null, successCallback, true, true);
-                }
-            } else {
-                das.subscriptionCallback = function(attributes) {
-                    processDeviceAttributes(attributes, query, deferred, successCallback, false, true);
-                    das.subscriptionCallback = function(attributes) {
-                        processDeviceAttributes(attributes, query, null, successCallback, true, true);
-                    }
-                }
-            }
-        } else {
-            var url = '/api/plugins/telemetry/' + deviceId + '/values/attributes/' + attributeScope;
-            $http.get(url, config).then(function success(response) {
-                processDeviceAttributes(response.data, query, deferred, successCallback);
-            }, function fail() {
-                deferred.reject();
-            });
-        }
-        return deferred;
-    }
-
-    function onSubscriptionData(data, subscriptionId) {
-        var deviceAttributesSubscription = deviceAttributesSubscriptionMap[subscriptionId];
-        if (deviceAttributesSubscription) {
-            if (!deviceAttributesSubscription.attributes) {
-                deviceAttributesSubscription.attributes = [];
-                deviceAttributesSubscription.keys = {};
-            }
-            var attributes = deviceAttributesSubscription.attributes;
-            var keys = deviceAttributesSubscription.keys;
-            for (var key in data) {
-                var index = keys[key];
-                var attribute;
-                if (index > -1) {
-                    attribute = attributes[index];
-                } else {
-                    attribute = {
-                        key: key
-                    };
-                    index = attributes.push(attribute)-1;
-                    keys[key] = index;
-                }
-                var attrData = data[key][0];
-                attribute.lastUpdateTs = attrData[0];
-                attribute.value = attrData[1];
-            }
-            if (deviceAttributesSubscription.subscriptionCallback) {
-                deviceAttributesSubscription.subscriptionCallback(attributes);
-            }
-        }
+        return attributeService.getEntityAttributes(types.entityType.device, deviceId, attributeScope, query, successCallback, config);
     }
 
     function subscribeForDeviceAttributes(deviceId, attributeScope) {
-        var subscriptionId = deviceId + attributeScope;
-        var deviceAttributesSubscription = deviceAttributesSubscriptionMap[subscriptionId];
-        if (!deviceAttributesSubscription) {
-            var subscriptionCommand = {
-                deviceId: deviceId,
-                scope: attributeScope
-            };
-
-            var type = attributeScope === types.latestTelemetry.value ?
-                types.dataKeyType.timeseries : types.dataKeyType.attribute;
-
-            var subscriber = {
-                subscriptionCommand: subscriptionCommand,
-                type: type,
-                onData: function (data) {
-                    if (data.data) {
-                        onSubscriptionData(data.data, subscriptionId);
-                    }
-                }
-            };
-            deviceAttributesSubscription = {
-                subscriber: subscriber,
-                attributes: null
-            }
-            deviceAttributesSubscriptionMap[subscriptionId] = deviceAttributesSubscription;
-            telemetryWebsocketService.subscribe(subscriber);
-        }
-        return subscriptionId;
+        return attributeService.subscribeForEntityAttributes(types.entityType.device, deviceId, attributeScope);
     }
+
     function unsubscribeForDeviceAttributes(subscriptionId) {
-        var deviceAttributesSubscription = deviceAttributesSubscriptionMap[subscriptionId];
-        if (deviceAttributesSubscription) {
-            telemetryWebsocketService.unsubscribe(deviceAttributesSubscription.subscriber);
-            delete deviceAttributesSubscriptionMap[subscriptionId];
-        }
+        attributeService.unsubscribeForEntityAttributes(subscriptionId);
     }
 
     function saveDeviceAttributes(deviceId, attributeScope, attributes) {
-        var deferred = $q.defer();
-        var attributesData = {};
-        for (var a=0; a<attributes.length;a++) {
-            attributesData[attributes[a].key] = attributes[a].value;
-        }
-        var url = '/api/plugins/telemetry/' + deviceId + '/' + attributeScope;
-        $http.post(url, attributesData).then(function success(response) {
-            deferred.resolve(response.data);
-        }, function fail(response) {
-            deferred.reject(response.data);
-        });
-        return deferred.promise;
+        return attributeService.saveEntityAttributes(types.entityType.device, deviceId, attributeScope, attributes);
     }
 
     function deleteDeviceAttributes(deviceId, attributeScope, attributes) {
-        var deferred = $q.defer();
-        var keys = '';
-        for (var i = 0; i < attributes.length; i++) {
-            if (i > 0) {
-                keys += ',';
-            }
-            keys += attributes[i].key;
-        }
-        var url = '/api/plugins/telemetry/' + deviceId + '/' + attributeScope + '?keys=' + keys;
-        $http.delete(url).then(function success() {
-            deferred.resolve();
-        }, function fail() {
-            deferred.reject();
-        });
-        return deferred.promise;
+        return attributeService.deleteEntityAttributes(types.entityType.device, deviceId, attributeScope, attributes);
     }
 
     function sendOneWayRpcCommand(deviceId, requestBody) {

ui/src/app/api/entity-relation.service.js

@@ -0,0 +1,136 @@
+/*
+ * Copyright © 2016-2017 The Thingsboard Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+export default angular.module('thingsboard.api.entityRelation', [])
+    .factory('entityRelationService', EntityRelationService)
+    .name;
+
+/*@ngInject*/
+function EntityRelationService($http, $q) {
+
+    var service = {
+        saveRelation: saveRelation,
+        deleteRelation: deleteRelation,
+        deleteRelations: deleteRelations,
+        findByFrom: findByFrom,
+        findByFromAndType: findByFromAndType,
+        findByTo: findByTo,
+        findByToAndType: findByToAndType,
+        findByQuery: findByQuery
+    }
+
+    return service;
+
+    function saveRelation(relation) {
+        var deferred = $q.defer();
+        var url = '/api/relation';
+        $http.post(url, relation).then(function success(response) {
+            deferred.resolve(response.data);
+        }, function fail() {
+            deferred.reject();
+        });
+        return deferred.promise;
+    }
+
+    function deleteRelation(fromId, fromType, relationType, toId, toType) {
+        var deferred = $q.defer();
+        var url = '/api/relation?fromId=' + fromId;
+        url += '&fromType=' + fromType;
+        url += '&relationType=' + relationType;
+        url += '&toId=' + toId;
+        url += '&toType=' + toType;
+        $http.delete(url).then(function success() {
+            deferred.resolve();
+        }, function fail() {
+            deferred.reject();
+        });
+        return deferred.promise;
+    }
+
+    function deleteRelations(entityId, entityType) {
+        var deferred = $q.defer();
+        var url = '/api/relations?entityId=' + entityId;
+        url += '&entityType=' + entityType;
+        $http.delete(url).then(function success() {
+            deferred.resolve();
+        }, function fail() {
+            deferred.reject();
+        });
+        return deferred.promise;
+    }
+
+
+    function findByFrom(fromId, fromType) {
+        var deferred = $q.defer();
+        var url = '/api/relations?fromId=' + fromId;
+        url += '&fromType=' + fromType;
+        $http.get(url, null).then(function success(response) {
+            deferred.resolve(response.data);
+        }, function fail() {
+            deferred.reject();
+        });
+        return deferred.promise;
+    }
+
+    function findByFromAndType(fromId, fromType, relationType) {
+        var deferred = $q.defer();
+        var url = '/api/relations?fromId=' + fromId;
+        url += '&fromType=' + fromType;
+        url += '&relationType=' + relationType;
+        $http.get(url, null).then(function success(response) {
+            deferred.resolve(response.data);
+        }, function fail() {
+            deferred.reject();
+        });
+        return deferred.promise;
+    }
+
+    function findByTo(toId, toType) {
+        var deferred = $q.defer();
+        var url = '/api/relations?toId=' + toId;
+        url += '&toType=' + toType;
+        $http.get(url, null).then(function success(response) {
+            deferred.resolve(response.data);
+        }, function fail() {
+            deferred.reject();
+        });
+        return deferred.promise;
+    }
+
+    function findByToAndType(toId, toType, relationType) {
+        var deferred = $q.defer();
+        var url = '/api/relations?toId=' + toId;
+        url += '&toType=' + toType;
+        url += '&relationType=' + relationType;
+        $http.get(url, null).then(function success(response) {
+            deferred.resolve(response.data);
+        }, function fail() {
+            deferred.reject();
+        });
+        return deferred.promise;
+    }
+
+    function findByQuery(query) {
+        var deferred = $q.defer();
+        var url = '/api/relations';
+        $http.post(url, query).then(function success(response) {
+            deferred.resolve(response.data);
+        }, function fail() {
+            deferred.reject();
+        });
+        return deferred.promise;
+    }
+
+}

ui/src/app/api/entity.service.js

@@ -0,0 +1,477 @@
+/*
+ * Copyright © 2016-2017 The Thingsboard Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import thingsboardTypes from '../common/types.constant';
+
+export default angular.module('thingsboard.api.entity', [thingsboardTypes])
+    .factory('entityService', EntityService)
+    .name;
+
+/*@ngInject*/
+function EntityService($http, $q, userService, deviceService,
+                       assetService, tenantService, customerService,
+                       ruleService, pluginService, types, utils) {
+    var service = {
+        getEntity: getEntity,
+        getEntities: getEntities,
+        getEntitiesByNameFilter: getEntitiesByNameFilter,
+        entityName: entityName,
+        processEntityAliases: processEntityAliases,
+        getEntityKeys: getEntityKeys,
+        checkEntityAlias: checkEntityAlias,
+        createDatasoucesFromSubscriptionsInfo: createDatasoucesFromSubscriptionsInfo
+    };
+
+    return service;
+
+    function getEntityPromise(entityType, entityId, config) {
+        var promise;
+        switch (entityType) {
+            case types.entityType.device:
+                promise = deviceService.getDevice(entityId, true, config);
+                break;
+            case types.entityType.asset:
+                promise = assetService.getAsset(entityId, true, config);
+                break;
+            case types.entityType.tenant:
+                promise = tenantService.getTenant(entityId);
+                break;
+            case types.entityType.customer:
+                promise = customerService.getCustomer(entityId);
+                break;
+            case types.entityType.rule:
+                promise = ruleService.getRule(entityId);
+                break;
+            case types.entityType.plugin:
+                promise = pluginService.getPlugin(entityId);
+                break;
+        }
+        return promise;
+    }
+
+    function getEntity(entityType, entityId, config) {
+        var deferred = $q.defer();
+        var promise = getEntityPromise(entityType, entityId, config);
+        promise.then(
+            function success(result) {
+                deferred.resolve(result);
+            },
+            function fail() {
+                deferred.reject();
+            }
+        );
+        return deferred.promise;
+    }
+
+    function getEntitiesByIdsPromise(fetchEntityFunction, entityIds) {
+        var tasks = [];
+        var deferred = $q.defer();
+        for (var i=0;i<entityIds.length;i++) {
+            tasks.push(fetchEntityFunction(entityIds[i]));
+        }
+        $q.all(tasks).then(
+            function success(entities) {
+                if (entities) {
+                    entities.sort(function (entity1, entity2) {
+                        var id1 = entity1.id.id;
+                        var id2 = entity2.id.id;
+                        var index1 = entityIds.indexOf(id1);
+                        var index2 = entityIds.indexOf(id2);
+                        return index1 - index2;
+                    });
+                    deferred.resolve(entities);
+                } else {
+                    deferred.resolve([]);
+                }
+            },
+            function fail() {
+                deferred.reject();
+            }
+        );
+        return deferred.promise;
+    }
+
+    function getEntitiesPromise(entityType, entityIds, config) {
+        var promise;
+        switch (entityType) {
+            case types.entityType.device:
+                promise = deviceService.getDevices(entityIds, config);
+                break;
+            case types.entityType.asset:
+                promise = assetService.getAssets(entityIds, config);
+                break;
+            case types.entityType.tenant:
+                promise = getEntitiesByIdsPromise(tenantService.getTenant, entityIds);
+                break;
+            case types.entityType.customer:
+                promise = getEntitiesByIdsPromise(customerService.getCustomer, entityIds);
+                break;
+            case types.entityType.rule:
+                promise = getEntitiesByIdsPromise(ruleService.getRule, entityIds);
+                break;
+            case types.entityType.plugin:
+                promise = getEntitiesByIdsPromise(pluginService.getPlugin, entityIds);
+                break;
+        }
+        return promise;
+    }
+
+    function getEntities(entityType, entityIds, config) {
+        var deferred = $q.defer();
+        var promise = getEntitiesPromise(entityType, entityIds, config);
+        promise.then(
+            function success(result) {
+                deferred.resolve(result);
+            },
+            function fail() {
+                deferred.reject();
+            }
+        );
+        return deferred.promise;
+    }
+
+    function getEntitiesByPageLinkPromise(entityType, pageLink, config) {
+        var promise;
+        var user = userService.getCurrentUser();
+        var customerId = user.customerId;
+        switch (entityType) {
+            case types.entityType.device:
+                if (user.authority === 'CUSTOMER_USER') {
+                    promise = deviceService.getCustomerDevices(customerId, pageLink, false, config);
+                } else {
+                    promise = deviceService.getTenantDevices(pageLink, false, config);
+                }
+                break;
+            case types.entityType.asset:
+                if (user.authority === 'CUSTOMER_USER') {
+                    promise = assetService.getCustomerAssets(customerId, pageLink, false, config);
+                } else {
+                    promise = assetService.getTenantAssets(pageLink, false, config);
+                }
+                break;
+            case types.entityType.tenant:
+                promise = tenantService.getTenants(pageLink);
+                break;
+            case types.entityType.customer:
+                promise = customerService.getCustomers(pageLink);
+                break;
+            case types.entityType.rule:
+                promise = ruleService.getAllRules(pageLink);
+                break;
+            case types.entityType.plugin:
+                promise = pluginService.getAllPlugins(pageLink);
+                break;
+        }
+        return promise;
+    }
+
+    function getEntitiesByNameFilter(entityType, entityNameFilter, limit, config) {
+        var deferred = $q.defer();
+        var pageLink = {limit: limit, textSearch: entityNameFilter};
+        var promise = getEntitiesByPageLinkPromise(entityType, pageLink, config);
+        promise.then(
+            function success(result) {
+                if (result.data && result.data.length > 0) {
+                    deferred.resolve(result.data);
+                } else {
+                    deferred.resolve(null);
+                }
+            },
+            function fail() {
+                deferred.resolve(null);
+            }
+        );
+        return deferred.promise;
+    }
+
+    function entityName(entityType, entity) {
+        var name = '';
+        switch (entityType) {
+            case types.entityType.device:
+            case types.entityType.asset:
+            case types.entityType.rule:
+            case types.entityType.plugin:
+                name = entity.name;
+                break;
+            case types.entityType.tenant:
+            case types.entityType.customer:
+                name = entity.title;
+                break;
+        }
+        return name;
+    }
+
+    function entityToEntityInfo(entityType, entity) {
+        return { name: entityName(entityType, entity), entityType: entityType, id: entity.id.id };
+    }
+
+    function entitiesToEntitiesInfo(entityType, entities) {
+        var entitiesInfo = [];
+        for (var d = 0; d < entities.length; d++) {
+            entitiesInfo.push(entityToEntityInfo(entityType, entities[d]));
+        }
+        return entitiesInfo;
+    }
+
+    function processEntityAlias(index, aliasIds, entityAliases, resolution, deferred) {
+        if (index < aliasIds.length) {
+            var aliasId = aliasIds[index];
+            var entityAlias = entityAliases[aliasId];
+            var alias = entityAlias.alias;
+            var entityFilter = entityAlias.entityFilter;
+            if (entityFilter.useFilter) {
+                var entityNameFilter = entityFilter.entityNameFilter;
+                getEntitiesByNameFilter(entityAlias.entityType, entityNameFilter, 100).then(
+                    function(entities) {
+                        if (entities && entities != null) {
+                            var resolvedAlias = {alias: alias, entityType: entityAlias.entityType, entityId: entities[0].id.id};
+                            resolution.aliasesInfo.entityAliases[aliasId] = resolvedAlias;
+                            resolution.aliasesInfo.entityAliasesInfo[aliasId] = entitiesToEntitiesInfo(entityAlias.entityType, entities);
+                            index++;
+                            processEntityAlias(index, aliasIds, entityAliases, resolution, deferred);
+                        } else {
+                            if (!resolution.error) {
+                                resolution.error = 'dashboard.invalid-aliases-config';
+                            }
+                            index++;
+                            processEntityAlias(index, aliasIds, entityAliases, resolution, deferred);
+                        }
+                    });
+            } else {
+                var entityList = entityFilter.entityList;
+                getEntities(entityAlias.entityType, entityList).then(
+                    function success(entities) {
+                        if (entities && entities.length > 0) {
+                            var resolvedAlias = {alias: alias, entityType: entityAlias.entityType, entityId: entities[0].id.id};
+                            resolution.aliasesInfo.entityAliases[aliasId] = resolvedAlias;
+                            resolution.aliasesInfo.entityAliasesInfo[aliasId] = entitiesToEntitiesInfo(entityAlias.entityType, entities);
+                            index++;
+                            processEntityAlias(index, aliasIds, entityAliases, resolution, deferred);
+                        } else {
+                            if (!resolution.error) {
+                                resolution.error = 'dashboard.invalid-aliases-config';
+                            }
+                            index++;
+                            processEntityAlias(index, aliasIds, entityAliases, resolution, deferred);
+                        }
+                    },
+                    function fail() {
+                        if (!resolution.error) {
+                            resolution.error = 'dashboard.invalid-aliases-config';
+                        }
+                        index++;
+                        processEntityAlias(index, aliasIds, entityAliases, resolution, deferred);
+                    }
+                );
+            }
+        } else {
+            deferred.resolve(resolution);
+        }
+    }
+
+    function processEntityAliases(entityAliases) {
+        var deferred = $q.defer();
+        var resolution = {
+            aliasesInfo: {
+                entityAliases: {},
+                entityAliasesInfo: {}
+            }
+        };
+        var aliasIds = [];
+        if (entityAliases) {
+            for (var aliasId in entityAliases) {
+                aliasIds.push(aliasId);
+            }
+        }
+        processEntityAlias(0, aliasIds, entityAliases, resolution, deferred);
+        return deferred.promise;
+    }
+
+    function getEntityKeys(entityType, entityId, query, type) {
+        var deferred = $q.defer();
+        var url = '/api/plugins/telemetry/' + entityType + '/' + entityId + '/keys/';
+        if (type === types.dataKeyType.timeseries) {
+            url += 'timeseries';
+        } else if (type === types.dataKeyType.attribute) {
+            url += 'attributes';
+        }
+        $http.get(url, null).then(function success(response) {
+            var result = [];
+            if (response.data) {
+                if (query) {
+                    var dataKeys = response.data;
+                    var lowercaseQuery = angular.lowercase(query);
+                    for (var i=0; i<dataKeys.length;i++) {
+                        if (angular.lowercase(dataKeys[i]).indexOf(lowercaseQuery) === 0) {
+                            result.push(dataKeys[i]);
+                        }
+                    }
+                } else {
+                    result = response.data;
+                }
+            }
+            deferred.resolve(result);
+        }, function fail(response) {
+            deferred.reject(response.data);
+        });
+        return deferred.promise;
+    }
+
+    function checkEntityAlias(entityAlias) {
+        var deferred = $q.defer();
+        var entityType = entityAlias.entityType;
+        var entityFilter = entityAlias.entityFilter;
+        var promise;
+        if (entityFilter.useFilter) {
+            var entityNameFilter = entityFilter.entityNameFilter;
+            promise = getEntitiesByNameFilter(entityType, entityNameFilter, 1);
+        } else {
+            var entityList = entityFilter.entityList;
+            promise = getEntities(entityType, entityList);
+        }
+        promise.then(
+            function success(entities) {
+                if (entities && entities.length > 0) {
+                    deferred.resolve(true);
+                } else {
+                    deferred.resolve(false);
+                }
+            },
+            function fail() {
+                deferred.resolve(false);
+            }
+        );
+        return deferred.promise;
+    }
+
+    function createDatasoucesFromSubscriptionsInfo(subscriptionsInfo) {
+        var deferred = $q.defer();
+        var datasources = [];
+        processSubscriptionsInfo(0, subscriptionsInfo, datasources, deferred);
+        return deferred.promise;
+    }
+
+    function processSubscriptionsInfo(index, subscriptionsInfo, datasources, deferred) {
+        if (index < subscriptionsInfo.length) {
+            var subscriptionInfo = validateSubscriptionInfo(subscriptionsInfo[index]);
+            if (subscriptionInfo.type === types.datasourceType.entity) {
+                if (subscriptionInfo.entityId) {
+                    getEntity(subscriptionInfo.entityType, subscriptionInfo.entityId, {ignoreLoading: true}).then(
+                        function success(entity) {
+                            createDatasourceFromSubscription(subscriptionInfo, datasources, entity);
+                            index++;
+                            processSubscriptionsInfo(index, subscriptionsInfo, datasources, deferred);
+                        },
+                        function fail() {
+                            index++;
+                            processSubscriptionsInfo(index, subscriptionsInfo, datasources, deferred);
+                        }
+                    );
+                } else if (subscriptionInfo.entityName || subscriptionInfo.entityNamePrefix
+                    || subscriptionInfo.entityIds) {
+                    var promise;
+                    if (subscriptionInfo.entityName) {
+                        promise = getEntitiesByNameFilter(subscriptionInfo.entityType, subscriptionInfo.entityName, 1, {ignoreLoading: true});
+                    } else if (subscriptionInfo.entityNamePrefix) {
+                        promise = getEntitiesByNameFilter(subscriptionInfo.entityType, subscriptionInfo.entityNamePrefix, 100, {ignoreLoading: true});
+                    } else if (subscriptionInfo.entityIds) {
+                        promise = getEntities(subscriptionInfo.entityType, subscriptionInfo.entityIds, {ignoreLoading: true});
+                    }
+                    promise.then(
+                        function success(entities) {
+                            if (entities && entities.length > 0) {
+                                for (var i = 0; i < entities.length; i++) {
+                                    var entity = entities[i];
+                                    createDatasourceFromSubscription(subscriptionInfo, datasources, entity);
+                                }
+                            }
+                            index++;
+                            processSubscriptionsInfo(index, subscriptionsInfo, datasources, deferred);
+                        },
+                        function fail() {
+                            index++;
+                            processSubscriptionsInfo(index, subscriptionsInfo, datasources, deferred);
+                        }
+                    )
+                } else {
+                    index++;
+                    processSubscriptionsInfo(index, subscriptionsInfo, datasources, deferred);
+                }
+            } else if (subscriptionInfo.type === types.datasourceType.function) {
+                createDatasourceFromSubscription(subscriptionInfo, datasources);
+                index++;
+                processSubscriptionsInfo(index, subscriptionsInfo, datasources, deferred);
+            }
+        } else {
+            deferred.resolve(datasources);
+        }
+    }
+
+    function validateSubscriptionInfo(subscriptionInfo) {
+        if (subscriptionInfo.type === 'device') {
+            subscriptionInfo.type = types.datasourceType.entity;
+            subscriptionInfo.entityType = types.entityType.device;
+            if (subscriptionInfo.deviceId) {
+                subscriptionInfo.entityId = subscriptionInfo.deviceId;
+            } else if (subscriptionInfo.deviceName) {
+                subscriptionInfo.entityName = subscriptionInfo.deviceName;
+            } else if (subscriptionInfo.deviceNamePrefix) {
+                subscriptionInfo.entityNamePrefix = subscriptionInfo.deviceNamePrefix;
+            } else if (subscriptionInfo.deviceIds) {
+                subscriptionInfo.entityIds = subscriptionInfo.deviceIds;
+            }
+        }
+        return subscriptionInfo;
+    }
+
+    function createDatasourceFromSubscription(subscriptionInfo, datasources, entity) {
+        var datasource;
+        if (subscriptionInfo.type === types.datasourceType.entity) {
+            datasource = {
+                type: subscriptionInfo.type,
+                entityName: entity.name ? entity.name : entity.title,
+                name: entity.name ? entity.name : entity.title,
+                entityType: subscriptionInfo.entityType,
+                entityId: entity.id.id,
+                dataKeys: []
+            }
+        } else if (subscriptionInfo.type === types.datasourceType.function) {
+            datasource = {
+                type: subscriptionInfo.type,
+                name: subscriptionInfo.name || types.datasourceType.function,
+                dataKeys: []
+            }
+        }
+        datasources.push(datasource);
+        if (subscriptionInfo.timeseries) {
+            createDatasourceKeys(subscriptionInfo.timeseries, types.dataKeyType.timeseries, datasource, datasources);
+        }
+        if (subscriptionInfo.attributes) {
+            createDatasourceKeys(subscriptionInfo.attributes, types.dataKeyType.attribute, datasource, datasources);
+        }
+        if (subscriptionInfo.functions) {
+            createDatasourceKeys(subscriptionInfo.functions, types.dataKeyType.function, datasource, datasources);
+        }
+    }
+
+    function createDatasourceKeys(keyInfos, type, datasource, datasources) {
+        for (var i=0;i<keyInfos.length;i++) {
+            var keyInfo = keyInfos[i];
+            var dataKey = utils.createKey(keyInfo, type, datasources);
+            datasource.dataKeys.push(dataKey);
+        }
+    }
+
+}

ui/src/app/api/subscription.js

@@ -64,7 +64,7 @@ export default class Subscription {
             this.callbacks.legendDataUpdated = this.callbacks.legendDataUpdated || function(){};
             this.callbacks.timeWindowUpdated = this.callbacks.timeWindowUpdated || function(){};
 
-            this.datasources = options.datasources;
+            this.datasources = this.ctx.utils.validateDatasources(options.datasources);
             this.datasourceListeners = [];
             this.data = [];
             this.hiddenData = [];
@@ -172,12 +172,6 @@ export default class Subscription {
                 this.startWatchingTimewindow();
             }
         }
-
-        registration = this.ctx.$scope.$on('deviceAliasListChanged', function () {
-            subscription.checkSubscriptions();
-        });
-
-        this.registrations.push(registration);
     }
 
     startWatchingTimewindow() {
@@ -204,29 +198,11 @@ export default class Subscription {
     }
 
     initRpc() {
-
         if (this.targetDeviceAliasIds && this.targetDeviceAliasIds.length > 0) {
             this.targetDeviceAliasId = this.targetDeviceAliasIds[0];
-            if (this.ctx.aliasesInfo.deviceAliases[this.targetDeviceAliasId]) {
-                this.targetDeviceId = this.ctx.aliasesInfo.deviceAliases[this.targetDeviceAliasId].deviceId;
+            if (this.ctx.aliasesInfo.entityAliases[this.targetDeviceAliasId]) {
+                this.targetDeviceId = this.ctx.aliasesInfo.entityAliases[this.targetDeviceAliasId].entityId;
             }
-            var subscription = this;
-            var registration = this.ctx.$scope.$on('deviceAliasListChanged', function () {
-                var deviceId = null;
-                if (subscription.ctx.aliasesInfo.deviceAliases[subscription.targetDeviceAliasId]) {
-                    deviceId = subscription.ctx.aliasesInfo.deviceAliases[subscription.targetDeviceAliasId].deviceId;
-                }
-                if (!angular.equals(deviceId, subscription.targetDeviceId)) {
-                    subscription.targetDeviceId = deviceId;
-                    if (subscription.targetDeviceId) {
-                        subscription.rpcEnabled = true;
-                    } else {
-                        subscription.rpcEnabled = subscription.ctx.$scope.widgetEditMode ? true : false;
-                    }
-                    subscription.callbacks.rpcStateChanged(subscription);
-                }
-            });
-            this.registrations.push(registration);
         } else if (this.targetDeviceIds && this.targetDeviceIds.length > 0) {
             this.targetDeviceId = this.targetDeviceIds[0];
         }
@@ -342,6 +318,14 @@ export default class Subscription {
         this.onDataUpdated();
     }
 
+    onAliasesChanged() {
+        if (this.type === this.ctx.types.widgetType.rpc.value) {
+            this.checkRpcTarget();
+        } else {
+            this.checkSubscriptions();
+        }
+    }
+
     onDataUpdated(apply) {
         if (this.cafs['dataUpdated']) {
             this.cafs['dataUpdated']();
@@ -493,25 +477,30 @@ export default class Subscription {
             var datasource = this.datasources[i];
             if (angular.isFunction(datasource))
                 continue;
-            var deviceId = null;
-            if (datasource.type === this.ctx.types.datasourceType.device) {
+            var entityId = null;
+            var entityType = null;
+            if (datasource.type === this.ctx.types.datasourceType.entity) {
                 var aliasName = null;
-                var deviceName = null;
-                if (datasource.deviceId) {
-                    deviceId = datasource.deviceId;
-                    datasource.name = datasource.deviceName;
-                    aliasName = datasource.deviceName;
-                    deviceName = datasource.deviceName;
-                } else if (datasource.deviceAliasId && this.ctx.aliasesInfo.deviceAliases[datasource.deviceAliasId]) {
-                    deviceId = this.ctx.aliasesInfo.deviceAliases[datasource.deviceAliasId].deviceId;
-                    datasource.name = this.ctx.aliasesInfo.deviceAliases[datasource.deviceAliasId].alias;
-                    aliasName = this.ctx.aliasesInfo.deviceAliases[datasource.deviceAliasId].alias;
-                    deviceName = '';
-                    var devicesInfo = this.ctx.aliasesInfo.deviceAliasesInfo[datasource.deviceAliasId];
-                    for (var d = 0; d < devicesInfo.length; d++) {
-                        if (devicesInfo[d].id === deviceId) {
-                            deviceName = devicesInfo[d].name;
-                            break;
+                var entityName = null;
+                if (datasource.entityId) {
+                    entityId = datasource.entityId;
+                    entityType = datasource.entityType;
+                    datasource.name = datasource.entityName;
+                    aliasName = datasource.entityName;
+                    entityName = datasource.entityName;
+                } else if (datasource.entityAliasId) {
+                    if (this.ctx.aliasesInfo.entityAliases[datasource.entityAliasId]) {
+                        entityId = this.ctx.aliasesInfo.entityAliases[datasource.entityAliasId].entityId;
+                        entityType = this.ctx.aliasesInfo.entityAliases[datasource.entityAliasId].entityType;
+                        datasource.name = this.ctx.aliasesInfo.entityAliases[datasource.entityAliasId].alias;
+                        aliasName = this.ctx.aliasesInfo.entityAliases[datasource.entityAliasId].alias;
+                        entityName = '';
+                        var entitiesInfo = this.ctx.aliasesInfo.entityAliasesInfo[datasource.entityAliasId];
+                        for (var d = 0; d < entitiesInfo.length; d++) {
+                            if (entitiesInfo[d].id === entityId) {
+                                entityName = entitiesInfo[d].name;
+                                break;
+                            }
                         }
                     }
                 }
@@ -519,7 +508,7 @@ export default class Subscription {
                 datasource.name = datasource.name || this.ctx.types.datasourceType.function;
             }
             for (var dk = 0; dk < datasource.dataKeys.length; dk++) {
-                updateDataKeyLabel(datasource.dataKeys[dk], datasource.name, deviceName, aliasName);
+                updateDataKeyLabel(datasource.dataKeys[dk], datasource.name, entityName, aliasName);
             }
 
             var subscription = this;
@@ -528,7 +517,8 @@ export default class Subscription {
                 subscriptionType: this.type,
                 subscriptionTimewindow: this.subscriptionTimewindow,
                 datasource: datasource,
-                deviceId: deviceId,
+                entityType: entityType,
+                entityId: entityId,
                 dataUpdated: function (data, datasourceIndex, dataKeyIndex, apply) {
                     subscription.dataUpdated(data, datasourceIndex, dataKeyIndex, apply);
                 },
@@ -563,19 +553,38 @@ export default class Subscription {
         }
     }
 
+    checkRpcTarget() {
+        var deviceId = null;
+        if (this.ctx.aliasesInfo.entityAliases[this.targetDeviceAliasId]) {
+            deviceId = this.ctx.aliasesInfo.entityAliases[this.targetDeviceAliasId].entityId;
+        }
+        if (!angular.equals(deviceId, this.targetDeviceId)) {
+            this.targetDeviceId = deviceId;
+            if (this.targetDeviceId) {
+                this.rpcEnabled = true;
+            } else {
+                this.rpcEnabled = this.ctx.$scope.widgetEditMode ? true : false;
+            }
+            this.callbacks.rpcStateChanged(this);
+        }
+    }
+
     checkSubscriptions() {
         var subscriptionsChanged = false;
         for (var i = 0; i < this.datasourceListeners.length; i++) {
             var listener = this.datasourceListeners[i];
-            var deviceId = null;
+            var entityId = null;
+            var entityType = null;
             var aliasName = null;
-            if (listener.datasource.type === this.ctx.types.datasourceType.device) {
-                if (listener.datasource.deviceAliasId &&
-                    this.ctx.aliasesInfo.deviceAliases[listener.datasource.deviceAliasId]) {
-                    deviceId = this.ctx.aliasesInfo.deviceAliases[listener.datasource.deviceAliasId].deviceId;
-                    aliasName = this.ctx.aliasesInfo.deviceAliases[listener.datasource.deviceAliasId].alias;
+            if (listener.datasource.type === this.ctx.types.datasourceType.entity) {
+                if (listener.datasource.entityAliasId &&
+                    this.ctx.aliasesInfo.entityAliases[listener.datasource.entityAliasId]) {
+                    entityId = this.ctx.aliasesInfo.entityAliases[listener.datasource.entityAliasId].entityId;
+                    entityType = this.ctx.aliasesInfo.entityAliases[listener.datasource.entityAliasId].entityType;
+                    aliasName = this.ctx.aliasesInfo.entityAliases[listener.datasource.entityAliasId].alias;
                 }
-                if (!angular.equals(deviceId, listener.deviceId) ||
+                if (!angular.equals(entityId, listener.entityId) ||
+                    !angular.equals(entityType, listener.entityType) ||
                     !angular.equals(aliasName, listener.datasource.name)) {
                     subscriptionsChanged = true;
                     break;
@@ -606,7 +615,7 @@ export default class Subscription {
 
 const varsRegex = /\$\{([^\}]*)\}/g;
 
-function updateDataKeyLabel(dataKey, dsName, deviceName, aliasName) {
+function updateDataKeyLabel(dataKey, dsName, entityName, aliasName) {
     var pattern = dataKey.pattern;
     var label = dataKey.pattern;
     var match = varsRegex.exec(pattern);
@@ -615,8 +624,10 @@ function updateDataKeyLabel(dataKey, dsName, deviceName, aliasName) {
         var variableName = match[1];
         if (variableName === 'dsName') {
             label = label.split(variable).join(dsName);
+        } else if (variableName === 'entityName') {
+            label = label.split(variable).join(entityName);
         } else if (variableName === 'deviceName') {
-            label = label.split(variable).join(deviceName);
+            label = label.split(variable).join(entityName);
         } else if (variableName === 'aliasName') {
             label = label.split(variable).join(aliasName);
         }

ui/src/app/api/widget.service.js

@@ -20,6 +20,8 @@ import tinycolor from 'tinycolor2';
 import thingsboardLedLight from '../components/led-light.directive';
 import thingsboardTimeseriesTableWidget from '../widget/lib/timeseries-table-widget';
 
+import agrologWidgets from '../widget/lib/agrolog';
+
 import TbFlot from '../widget/lib/flot-widget';
 import TbAnalogueLinearGauge from '../widget/lib/analogue-linear-gauge';
 import TbAnalogueRadialGauge from '../widget/lib/analogue-radial-gauge';
@@ -32,7 +34,7 @@ import cssjs from '../../vendor/css.js/css';
 import thingsboardTypes from '../common/types.constant';
 import thingsboardUtils from '../common/utils.service';
 
-export default angular.module('thingsboard.api.widget', ['oc.lazyLoad', thingsboardLedLight, thingsboardTimeseriesTableWidget,
+export default angular.module('thingsboard.api.widget', ['oc.lazyLoad', thingsboardLedLight, thingsboardTimeseriesTableWidget, agrologWidgets,
     thingsboardTypes, thingsboardUtils])
     .factory('widgetService', WidgetService)
     .name;

ui/src/app/app.js

@@ -53,6 +53,7 @@ import thingsboardDialogs from './components/datakey-config-dialog.controller';
 import thingsboardMenu from './services/menu.service';
 import thingsboardRaf from './common/raf.provider';
 import thingsboardUtils from './common/utils.service';
+import thingsboardDashboardUtils from './common/dashboard-utils.service';
 import thingsboardTypes from './common/types.constant';
 import thingsboardApiTime from './api/time.service';
 import thingsboardKeyboardShortcut from './components/keyboard-shortcut.filter';
@@ -62,6 +63,10 @@ import thingsboardHome from './layout';
 import thingsboardApiLogin from './api/login.service';
 import thingsboardApiDevice from './api/device.service';
 import thingsboardApiUser from './api/user.service';
+import thingsboardApiEntityRelation from './api/entity-relation.service';
+import thingsboardApiAsset from './api/asset.service';
+import thingsboardApiAttribute from './api/attribute.service';
+import thingsboardApiEntity from './api/entity.service';
 
 import 'typeface-roboto';
 import 'font-awesome/css/font-awesome.min.css';
@@ -105,6 +110,7 @@ angular.module('thingsboard', [
     thingsboardMenu,
     thingsboardRaf,
     thingsboardUtils,
+    thingsboardDashboardUtils,
     thingsboardTypes,
     thingsboardApiTime,
     thingsboardKeyboardShortcut,
@@ -114,6 +120,10 @@ angular.module('thingsboard', [
     thingsboardApiLogin,
     thingsboardApiDevice,
     thingsboardApiUser,
+    thingsboardApiEntityRelation,
+    thingsboardApiAsset,
+    thingsboardApiAttribute,
+    thingsboardApiEntity,
     uiRouter])
     .config(AppConfig)
     .factory('globalInterceptor', GlobalInterceptor)

ui/src/app/asset/add-asset.tpl.html

@@ -0,0 +1,45 @@
+<!--
+
+    Copyright © 2016-2017 The Thingsboard Authors
+
+    Licensed under the Apache License, Version 2.0 (the "License");
+    you may not use this file except in compliance with the License.
+    You may obtain a copy of the License at
+
+        http://www.apache.org/licenses/LICENSE-2.0
+
+    Unless required by applicable law or agreed to in writing, software
+    distributed under the License is distributed on an "AS IS" BASIS,
+    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+    See the License for the specific language governing permissions and
+    limitations under the License.
+
+-->
+<md-dialog aria-label="{{ 'asset.add' | translate }}" tb-help="'assets'" help-container-id="help-container">
+    <form name="theForm" ng-submit="vm.add()">
+        <md-toolbar>
+            <div class="md-toolbar-tools">
+                <h2 translate>asset.add</h2>
+                <span flex></span>
+                <div id="help-container"></div>
+                <md-button class="md-icon-button" ng-click="vm.cancel()">
+                    <ng-md-icon icon="close" aria-label="{{ 'dialog.close' | translate }}"></ng-md-icon>
+                </md-button>
+            </div>
+        </md-toolbar>
+        <md-progress-linear class="md-warn" md-mode="indeterminate" ng-disabled="!loading" ng-show="loading"></md-progress-linear>
+        <span style="min-height: 5px;" flex="" ng-show="!loading"></span>
+        <md-dialog-content>
+            <div class="md-dialog-content">
+                <tb-asset asset="vm.item" is-edit="true" the-form="theForm"></tb-asset>
+            </div>
+        </md-dialog-content>
+        <md-dialog-actions layout="row">
+            <span flex></span>
+            <md-button ng-disabled="loading || theForm.$invalid || !theForm.$dirty" type="submit" class="md-raised md-primary">
+                {{ 'action.add' | translate }}
+            </md-button>
+            <md-button ng-disabled="loading" ng-click="vm.cancel()" style="margin-right:20px;">{{ 'action.cancel' | translate }}</md-button>
+        </md-dialog-actions>
+    </form>
+</md-dialog>

ui/src/app/asset/add-assets-to-customer.controller.js

@@ -0,0 +1,123 @@
+/*
+ * Copyright © 2016-2017 The Thingsboard Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+/*@ngInject*/
+export default function AddAssetsToCustomerController(assetService, $mdDialog, $q, customerId, assets) {
+
+    var vm = this;
+
+    vm.assets = assets;
+    vm.searchText = '';
+
+    vm.assign = assign;
+    vm.cancel = cancel;
+    vm.hasData = hasData;
+    vm.noData = noData;
+    vm.searchAssetTextUpdated = searchAssetTextUpdated;
+    vm.toggleAssetSelection = toggleAssetSelection;
+
+    vm.theAssets = {
+        getItemAtIndex: function (index) {
+            if (index > vm.assets.data.length) {
+                vm.theAssets.fetchMoreItems_(index);
+                return null;
+            }
+            var item = vm.assets.data[index];
+            if (item) {
+                item.indexNumber = index + 1;
+            }
+            return item;
+        },
+
+        getLength: function () {
+            if (vm.assets.hasNext) {
+                return vm.assets.data.length + vm.assets.nextPageLink.limit;
+            } else {
+                return vm.assets.data.length;
+            }
+        },
+
+        fetchMoreItems_: function () {
+            if (vm.assets.hasNext && !vm.assets.pending) {
+                vm.assets.pending = true;
+                assetService.getTenantAssets(vm.assets.nextPageLink, false).then(
+                    function success(assets) {
+                        vm.assets.data = vm.assets.data.concat(assets.data);
+                        vm.assets.nextPageLink = assets.nextPageLink;
+                        vm.assets.hasNext = assets.hasNext;
+                        if (vm.assets.hasNext) {
+                            vm.assets.nextPageLink.limit = vm.assets.pageSize;
+                        }
+                        vm.assets.pending = false;
+                    },
+                    function fail() {
+                        vm.assets.hasNext = false;
+                        vm.assets.pending = false;
+                    });
+            }
+        }
+    };
+
+    function cancel () {
+        $mdDialog.cancel();
+    }
+
+    function assign() {
+        var tasks = [];
+        for (var assetId in vm.assets.selections) {
+            tasks.push(assetService.assignAssetToCustomer(customerId, assetId));
+        }
+        $q.all(tasks).then(function () {
+            $mdDialog.hide();
+        });
+    }
+
+    function noData() {
+        return vm.assets.data.length == 0 && !vm.assets.hasNext;
+    }
+
+    function hasData() {
+        return vm.assets.data.length > 0;
+    }
+
+    function toggleAssetSelection($event, asset) {
+        $event.stopPropagation();
+        var selected = angular.isDefined(asset.selected) && asset.selected;
+        asset.selected = !selected;
+        if (asset.selected) {
+            vm.assets.selections[asset.id.id] = true;
+            vm.assets.selectedCount++;
+        } else {
+            delete vm.assets.selections[asset.id.id];
+            vm.assets.selectedCount--;
+        }
+    }
+
+    function searchAssetTextUpdated() {
+        vm.assets = {
+            pageSize: vm.assets.pageSize,
+            data: [],
+            nextPageLink: {
+                limit: vm.assets.pageSize,
+                textSearch: vm.searchText
+            },
+            selections: {},
+            selectedCount: 0,
+            hasNext: true,
+            pending: false
+        };
+    }
+
+}