Initial export/import API for devices, device profiles, assets, rule chains, dashboards and customers

application/src/main/data/upgrade/3.4/schema_update.sql

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+--
+-- Copyright © 2016-2022 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.
+--
+
+ALTER TABLE device
+    ADD COLUMN IF NOT EXISTS external_id UUID;
+ALTER TABLE device_profile
+    ADD COLUMN IF NOT EXISTS external_id UUID;
+ALTER TABLE asset
+    ADD COLUMN IF NOT EXISTS external_id UUID;
+ALTER TABLE rule_chain
+    ADD COLUMN IF NOT EXISTS external_id UUID;
+ALTER TABLE dashboard
+    ADD COLUMN IF NOT EXISTS external_id UUID;
+ALTER TABLE customer
+    ADD COLUMN IF NOT EXISTS external_id UUID;

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

@@ -0,0 +1,99 @@
+/**
+ * Copyright © 2016-2022 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 lombok.RequiredArgsConstructor;
+import org.springframework.security.access.prepost.PreAuthorize;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+import org.thingsboard.server.common.data.EntityType;
+import org.thingsboard.server.common.data.exception.ThingsboardException;
+import org.thingsboard.server.common.data.export.EntitiesExportRequest;
+import org.thingsboard.server.common.data.export.EntitiesExportResponse;
+import org.thingsboard.server.common.data.export.EntityExportData;
+import org.thingsboard.server.common.data.id.EntityId;
+import org.thingsboard.server.common.data.id.EntityIdFactory;
+import org.thingsboard.server.common.data.id.HasId;
+import org.thingsboard.server.common.data.id.TenantId;
+import org.thingsboard.server.queue.util.TbCoreComponent;
+import org.thingsboard.server.service.expimp.EntitiesExportImportService;
+
+import java.util.HashMap;
+import java.util.LinkedList;
+import java.util.List;
+import java.util.Map;
+import java.util.UUID;
+
+@RestController
+@RequestMapping("/api/entities")
+@TbCoreComponent
+@RequiredArgsConstructor
+public class EntitiesExportImportController extends BaseController {
+
+    private final EntitiesExportImportService exportImportService;
+
+
+    @PostMapping("/export/{entityType}/{entityId}")
+    @PreAuthorize("hasAuthority('TENANT_ADMIN')")
+    public EntityExportData<?> exportEntity(@PathVariable EntityType entityType,
+                                            @PathVariable("entityId") UUID entityUuid) throws ThingsboardException {
+        EntityId entityId = EntityIdFactory.getByTypeAndUuid(entityType, entityUuid);
+        try {
+            return exportImportService.exportEntity(getTenantId(), entityId);
+        } catch (Exception e) {
+            throw handleException(e);
+        }
+    }
+
+    @PostMapping("/export/batch")
+    @PreAuthorize("hasAuthority('TENANT_ADMIN')")
+    public EntitiesExportResponse exportEntities(@RequestBody EntitiesExportRequest exportRequest) throws ThingsboardException {
+        TenantId tenantId = getTenantId();
+
+        EntitiesExportResponse exportResponse = new EntitiesExportResponse();
+
+        Map<EntityType, List<EntityExportData<HasId<EntityId>>>> result = new HashMap<>();
+        exportRequest.getEntities().forEach((entityType, entityIds) -> {
+            List<EntityExportData<HasId<EntityId>>> exportDataForEntityType = new LinkedList<>();
+            entityIds.forEach(entityId -> {
+                EntityExportData<HasId<EntityId>> exportData = exportImportService.exportEntity(tenantId, entityId);
+                exportDataForEntityType.add(exportData);
+            });
+            result.put(entityType, exportDataForEntityType);
+        });
+
+        exportResponse.setExportData(result);
+        return exportResponse;
+    }
+    // TODO: api to export and import whole customer, whole tenant
+
+
+    @PostMapping("/import")
+    @PreAuthorize("hasAuthority('TENANT_ADMIN')")
+    public <E extends HasId<I>, I extends EntityId, D extends EntityExportData<E>> E importEntity(@RequestBody D exportData) throws ThingsboardException {
+        try {
+            return exportImportService.importEntity(getTenantId(), exportData);
+        } catch (Exception e) {
+            throw handleException(e);
+        }
+    }
+
+//    public void importEntities(@RequestBody )
+
+}

application/src/main/java/org/thingsboard/server/service/expimp/DefaultEntitiesExportImportService.java

@@ -0,0 +1,86 @@
+/**
+ * Copyright © 2016-2022 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.service.expimp;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+import org.thingsboard.server.common.data.EntityType;
+import org.thingsboard.server.common.data.export.EntityExportData;
+import org.thingsboard.server.common.data.id.EntityId;
+import org.thingsboard.server.common.data.id.HasId;
+import org.thingsboard.server.common.data.id.TenantId;
+import org.thingsboard.server.queue.util.TbCoreComponent;
+import org.thingsboard.server.service.expimp.exp.EntityExportService;
+import org.thingsboard.server.service.expimp.imp.EntityImportService;
+
+import java.util.Collection;
+import java.util.EnumMap;
+import java.util.Map;
+
+// FIXME: review packages and classes naming
+@Service
+@TbCoreComponent
+public class DefaultEntitiesExportImportService implements EntitiesExportImportService {
+
+    private final Map<EntityType, EntityExportService<?, ?>> exportServices = new EnumMap<>(EntityType.class);
+    private final Map<EntityType, EntityImportService<?, ?, ?>> importServices = new EnumMap<>(EntityType.class);
+
+
+    // TODO: export and import of the whole tenant
+    // TODO: export and import of the whole customer ?
+    // TODO: relations export and import
+    @Override
+    public <E extends HasId<I>, I extends EntityId> EntityExportData<E> exportEntity(TenantId tenantId, I entityId) {
+        EntityType entityType = entityId.getEntityType();
+        EntityExportService<I, E> exportService = getExportService(entityType);
+
+        return exportService.getExportData(tenantId, entityId);
+    }
+
+    // FIXME: somehow validate export data
+    // FIXME: validate permissions for create or update
+    // FIXME: send entity lifecycle event
+    @Override
+    public <E extends HasId<I>, I extends EntityId, D extends EntityExportData<E>> E importEntity(TenantId tenantId, D exportData) {
+        EntityType entityType = exportData.getEntityType();
+        EntityImportService<I, E, D> importService = getImportService(entityType);
+
+        return importService.importEntity(tenantId, exportData);
+    }
+
+
+    @SuppressWarnings("unchecked")
+    private <I extends EntityId, E extends HasId<I>> EntityExportService<I, E> getExportService(EntityType entityType) {
+        return (EntityExportService<I, E>) exportServices.get(entityType);
+    }
+
+    @SuppressWarnings("unchecked")
+    private <I extends EntityId, E extends HasId<I>, D extends EntityExportData<E>> EntityImportService<I, E, D> getImportService(EntityType entityType) {
+        return (EntityImportService<I, E, D>) importServices.get(entityType);
+    }
+
+    @Autowired
+    private void setExportImportServices(Collection<EntityExportService<?, ?>> exportServices,
+                                         Collection<EntityImportService<?, ?, ?>> importServices) {
+        exportServices.forEach(entityExportService -> {
+            this.exportServices.put(entityExportService.getEntityType(), entityExportService);
+        });
+        importServices.forEach(entityImportService -> {
+            this.importServices.put(entityImportService.getEntityType(), entityImportService);
+        });
+    }
+
+}

application/src/main/java/org/thingsboard/server/service/expimp/EntitiesExportImportService.java

@@ -0,0 +1,29 @@
+/**
+ * Copyright © 2016-2022 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.service.expimp;
+
+import org.thingsboard.server.common.data.export.EntityExportData;
+import org.thingsboard.server.common.data.id.EntityId;
+import org.thingsboard.server.common.data.id.HasId;
+import org.thingsboard.server.common.data.id.TenantId;
+
+public interface EntitiesExportImportService {
+
+    <E extends HasId<I>, I extends EntityId> EntityExportData<E> exportEntity(TenantId tenantId, I entityId);
+
+    <E extends HasId<I>, I extends EntityId, D extends EntityExportData<E>> E importEntity(TenantId tenantId, D exportData);
+
+}

application/src/main/java/org/thingsboard/server/service/expimp/exp/EntityExportService.java

@@ -0,0 +1,32 @@
+/**
+ * Copyright © 2016-2022 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.service.expimp.exp;
+
+import org.thingsboard.server.common.data.EntityType;
+import org.thingsboard.server.common.data.export.EntityExportData;
+import org.thingsboard.server.common.data.id.EntityId;
+import org.thingsboard.server.common.data.id.HasId;
+import org.thingsboard.server.common.data.id.TenantId;
+
+public interface EntityExportService<I extends EntityId, E extends HasId<I>> {
+
+    // FIXME: export relations
+    // FIXME: get rid of boilerplate
+    EntityExportData<E> getExportData(TenantId tenantId, I entityId);
+
+    EntityType getEntityType();
+
+}

application/src/main/java/org/thingsboard/server/service/expimp/exp/impl/AssetExportService.java

@@ -0,0 +1,50 @@
+/**
+ * Copyright © 2016-2022 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.service.expimp.exp.impl;
+
+import lombok.RequiredArgsConstructor;
+import org.springframework.stereotype.Service;
+import org.thingsboard.server.common.data.EntityType;
+import org.thingsboard.server.common.data.asset.Asset;
+import org.thingsboard.server.common.data.export.EntityExportData;
+import org.thingsboard.server.common.data.export.impl.AssetExportData;
+import org.thingsboard.server.common.data.id.AssetId;
+import org.thingsboard.server.common.data.id.TenantId;
+import org.thingsboard.server.dao.asset.AssetService;
+import org.thingsboard.server.queue.util.TbCoreComponent;
+import org.thingsboard.server.service.expimp.exp.EntityExportService;
+
+@Service
+@TbCoreComponent
+@RequiredArgsConstructor
+public class AssetExportService implements EntityExportService<AssetId, Asset> {
+
+    private final AssetService assetService;
+
+
+    @Override
+    public EntityExportData<Asset> getExportData(TenantId tenantId, AssetId assetId) {
+        AssetExportData exportData = new AssetExportData();
+        exportData.setAsset(assetService.findAssetById(tenantId, assetId));
+        return exportData;
+    }
+
+    @Override
+    public EntityType getEntityType() {
+        return EntityType.ASSET;
+    }
+
+}

application/src/main/java/org/thingsboard/server/service/expimp/exp/impl/CustomerExportService.java

@@ -0,0 +1,50 @@
+/**
+ * Copyright © 2016-2022 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.service.expimp.exp.impl;
+
+import lombok.RequiredArgsConstructor;
+import org.springframework.stereotype.Service;
+import org.thingsboard.server.common.data.Customer;
+import org.thingsboard.server.common.data.EntityType;
+import org.thingsboard.server.common.data.export.EntityExportData;
+import org.thingsboard.server.common.data.export.impl.CustomerExportData;
+import org.thingsboard.server.common.data.id.CustomerId;
+import org.thingsboard.server.common.data.id.TenantId;
+import org.thingsboard.server.dao.customer.CustomerService;
+import org.thingsboard.server.queue.util.TbCoreComponent;
+import org.thingsboard.server.service.expimp.exp.EntityExportService;
+
+@Service
+@TbCoreComponent
+@RequiredArgsConstructor
+public class CustomerExportService implements EntityExportService<CustomerId, Customer> {
+
+    private final CustomerService customerService;
+
+
+    @Override
+    public EntityExportData<Customer> getExportData(TenantId tenantId, CustomerId customerId) {
+        CustomerExportData exportData = new CustomerExportData();
+        exportData.setCustomer(customerService.findCustomerById(tenantId, customerId));
+        return exportData;
+    }
+
+    @Override
+    public EntityType getEntityType() {
+        return EntityType.CUSTOMER;
+    }
+
+}

application/src/main/java/org/thingsboard/server/service/expimp/exp/impl/DashboardExportService.java

@@ -0,0 +1,50 @@
+/**
+ * Copyright © 2016-2022 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.service.expimp.exp.impl;
+
+import lombok.RequiredArgsConstructor;
+import org.springframework.stereotype.Service;
+import org.thingsboard.server.common.data.Dashboard;
+import org.thingsboard.server.common.data.EntityType;
+import org.thingsboard.server.common.data.export.EntityExportData;
+import org.thingsboard.server.common.data.export.impl.DashboardExportData;
+import org.thingsboard.server.common.data.id.DashboardId;
+import org.thingsboard.server.common.data.id.TenantId;
+import org.thingsboard.server.dao.dashboard.DashboardService;
+import org.thingsboard.server.queue.util.TbCoreComponent;
+import org.thingsboard.server.service.expimp.exp.EntityExportService;
+
+@Service
+@TbCoreComponent
+@RequiredArgsConstructor
+public class DashboardExportService implements EntityExportService<DashboardId, Dashboard> {
+
+    private final DashboardService dashboardService;
+
+
+    @Override
+    public EntityExportData<Dashboard> getExportData(TenantId tenantId, DashboardId dashboardId) {
+        DashboardExportData exportData = new DashboardExportData();
+        exportData.setDashboard(dashboardService.findDashboardById(tenantId, dashboardId));
+        return exportData;
+    }
+
+    @Override
+    public EntityType getEntityType() {
+        return EntityType.DASHBOARD;
+    }
+
+}

application/src/main/java/org/thingsboard/server/service/expimp/exp/impl/DeviceExportService.java

@@ -0,0 +1,53 @@
+/**
+ * Copyright © 2016-2022 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.service.expimp.exp.impl;
+
+import lombok.RequiredArgsConstructor;
+import org.springframework.stereotype.Service;
+import org.thingsboard.server.common.data.Device;
+import org.thingsboard.server.common.data.EntityType;
+import org.thingsboard.server.common.data.export.EntityExportData;
+import org.thingsboard.server.common.data.export.impl.DeviceExportData;
+import org.thingsboard.server.common.data.id.DeviceId;
+import org.thingsboard.server.common.data.id.TenantId;
+import org.thingsboard.server.dao.device.DeviceCredentialsService;
+import org.thingsboard.server.dao.device.DeviceService;
+import org.thingsboard.server.queue.util.TbCoreComponent;
+import org.thingsboard.server.service.expimp.exp.EntityExportService;
+
+@Service
+@TbCoreComponent
+@RequiredArgsConstructor
+public class DeviceExportService implements EntityExportService<DeviceId, Device> {
+
+    private final DeviceService deviceService;
+    private final DeviceCredentialsService deviceCredentialsService;
+
+
+    @Override
+    public EntityExportData<Device> getExportData(TenantId tenantId, DeviceId deviceId) {
+        DeviceExportData exportData = new DeviceExportData();
+        exportData.setDevice(deviceService.findDeviceById(tenantId, deviceId));
+        exportData.setCredentials(deviceCredentialsService.findDeviceCredentialsByDeviceId(TenantId.SYS_TENANT_ID, deviceId));
+        return exportData;
+    }
+
+    @Override
+    public EntityType getEntityType() {
+        return EntityType.DEVICE;
+    }
+
+}

application/src/main/java/org/thingsboard/server/service/expimp/exp/impl/DeviceProfileExportService.java

@@ -0,0 +1,50 @@
+/**
+ * Copyright © 2016-2022 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.service.expimp.exp.impl;
+
+import lombok.RequiredArgsConstructor;
+import org.springframework.stereotype.Service;
+import org.thingsboard.server.common.data.DeviceProfile;
+import org.thingsboard.server.common.data.EntityType;
+import org.thingsboard.server.common.data.export.EntityExportData;
+import org.thingsboard.server.common.data.export.impl.DeviceProfileExportData;
+import org.thingsboard.server.common.data.id.DeviceProfileId;
+import org.thingsboard.server.common.data.id.TenantId;
+import org.thingsboard.server.dao.device.DeviceProfileService;
+import org.thingsboard.server.queue.util.TbCoreComponent;
+import org.thingsboard.server.service.expimp.exp.EntityExportService;
+
+@Service
+@TbCoreComponent
+@RequiredArgsConstructor
+public class DeviceProfileExportService implements EntityExportService<DeviceProfileId, DeviceProfile> {
+
+    private final DeviceProfileService deviceProfileService;
+
+
+    @Override
+    public EntityExportData<DeviceProfile> getExportData(TenantId tenantId, DeviceProfileId deviceProfileId) {
+        DeviceProfileExportData exportData = new DeviceProfileExportData();
+        exportData.setDeviceProfile(deviceProfileService.findDeviceProfileById(tenantId, deviceProfileId));
+        return exportData;
+    }
+
+    @Override
+    public EntityType getEntityType() {
+        return EntityType.DEVICE_PROFILE;
+    }
+
+}

application/src/main/java/org/thingsboard/server/service/expimp/exp/impl/RuleChainExportService.java

@@ -0,0 +1,51 @@
+/**
+ * Copyright © 2016-2022 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.service.expimp.exp.impl;
+
+import lombok.RequiredArgsConstructor;
+import org.springframework.stereotype.Service;
+import org.thingsboard.server.common.data.EntityType;
+import org.thingsboard.server.common.data.export.EntityExportData;
+import org.thingsboard.server.common.data.export.impl.RuleChainExportData;
+import org.thingsboard.server.common.data.id.RuleChainId;
+import org.thingsboard.server.common.data.id.TenantId;
+import org.thingsboard.server.common.data.rule.RuleChain;
+import org.thingsboard.server.dao.rule.RuleChainService;
+import org.thingsboard.server.queue.util.TbCoreComponent;
+import org.thingsboard.server.service.expimp.exp.EntityExportService;
+
+@Service
+@TbCoreComponent
+@RequiredArgsConstructor
+public class RuleChainExportService implements EntityExportService<RuleChainId, RuleChain> {
+
+    private final RuleChainService ruleChainService;
+
+
+    @Override
+    public EntityExportData<RuleChain> getExportData(TenantId tenantId, RuleChainId ruleChainId) {
+        RuleChainExportData exportData = new RuleChainExportData();
+        exportData.setRuleChain(ruleChainService.findRuleChainById(tenantId, ruleChainId));
+        exportData.setMetaData(ruleChainService.loadRuleChainMetaData(tenantId, ruleChainId));
+        return exportData;
+    }
+
+    @Override
+    public EntityType getEntityType() {
+        return EntityType.RULE_CHAIN;
+    }
+
+}

application/src/main/java/org/thingsboard/server/service/expimp/imp/EntityImportService.java

@@ -0,0 +1,30 @@
+/**
+ * Copyright © 2016-2022 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.service.expimp.imp;
+
+import org.thingsboard.server.common.data.EntityType;
+import org.thingsboard.server.common.data.export.EntityExportData;
+import org.thingsboard.server.common.data.id.EntityId;
+import org.thingsboard.server.common.data.id.HasId;
+import org.thingsboard.server.common.data.id.TenantId;
+
+public interface EntityImportService<I extends EntityId, E extends HasId<I>, D extends EntityExportData<E>> {
+
+    E importEntity(TenantId tenantId, D exportData);
+
+    EntityType getEntityType();
+
+}

application/src/main/java/org/thingsboard/server/service/expimp/imp/impl/AbstractEntityImportService.java

@@ -0,0 +1,73 @@
+/**
+ * Copyright © 2016-2022 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.service.expimp.imp.impl;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.thingsboard.server.common.data.EntityType;
+import org.thingsboard.server.common.data.export.EntityExportData;
+import org.thingsboard.server.common.data.id.EntityId;
+import org.thingsboard.server.common.data.id.HasId;
+import org.thingsboard.server.common.data.id.TenantId;
+import org.thingsboard.server.dao.ExportableEntityDao;
+import org.thingsboard.server.service.expimp.imp.EntityImportService;
+
+import java.util.Collection;
+import java.util.EnumMap;
+import java.util.Map;
+import java.util.Optional;
+
+public abstract class AbstractEntityImportService<I extends EntityId, E extends HasId<I>, D extends EntityExportData<E>> implements EntityImportService<I, E, D> {
+
+    private final Map<EntityType, ExportableEntityDao<?>> daos = new EnumMap<>(EntityType.class);
+
+
+    public final E findByExternalId(TenantId tenantId, I externalId) {
+        return findByExternalOrInternalId(tenantId, externalId);
+    }
+
+
+    protected final <ID extends EntityId> ID getInternalId(TenantId tenantId, ID externalId) {
+        if (externalId == null) {
+            return null;
+        }
+        HasId<ID> entity = findByExternalOrInternalId(tenantId, externalId);
+        if (entity == null) {
+            throw new IllegalStateException("Cannot find " + externalId.getEntityType() + " by external id " + externalId);
+        }
+        return entity.getId();
+    }
+
+    private <T extends HasId<ID>, ID extends EntityId> T findByExternalOrInternalId(TenantId tenantId, ID externalOrInternalId) {
+        ExportableEntityDao<T> dao = getDao(externalOrInternalId.getEntityType());
+        return Optional.ofNullable(dao.findByTenantIdAndExternalId(tenantId.getId(), externalOrInternalId.getId()))
+                .orElseGet(() -> dao.findByTenantIdAndId(tenantId.getId(), externalOrInternalId.getId()));
+    }
+
+
+    @SuppressWarnings("unchecked")
+    private <T> ExportableEntityDao<T> getDao(EntityType entityType) {
+        return (ExportableEntityDao<T>) daos.get(entityType);
+    }
+
+    @Autowired
+    private void setDaos(Collection<ExportableEntityDao<?>> daos) {
+        daos.forEach(dao -> this.daos.put(dao.getEntityType(), dao));
+        if (!this.daos.containsKey(getEntityType())) {
+            throw new IllegalStateException(getClass().getSimpleName() + " requires ExportableEntityDao for entity type " + getEntityType());
+        }
+    }
+
+}

application/src/main/java/org/thingsboard/server/service/expimp/imp/impl/AssetImportService.java

@@ -0,0 +1,62 @@
+/**
+ * Copyright © 2016-2022 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.service.expimp.imp.impl;
+
+import lombok.RequiredArgsConstructor;
+import org.springframework.stereotype.Service;
+import org.thingsboard.server.common.data.EntityType;
+import org.thingsboard.server.common.data.asset.Asset;
+import org.thingsboard.server.common.data.export.impl.AssetExportData;
+import org.thingsboard.server.common.data.id.AssetId;
+import org.thingsboard.server.common.data.id.TenantId;
+import org.thingsboard.server.dao.asset.AssetService;
+import org.thingsboard.server.queue.util.TbCoreComponent;
+
+@Service
+@TbCoreComponent
+@RequiredArgsConstructor
+public class AssetImportService extends AbstractEntityImportService<AssetId, Asset, AssetExportData> {
+
+    private final AssetService assetService;
+
+
+    @Override
+    public Asset importEntity(TenantId tenantId, AssetExportData exportData) {
+        Asset asset = exportData.getAsset();
+        Asset existingAsset = findByExternalId(tenantId, asset.getId()); // TODO: extract boiler plate to abstract class ...
+
+        asset.setExternalId(asset.getId());
+        asset.setTenantId(tenantId);
+
+        if (existingAsset == null) {
+            asset.setId(null);
+        } else {
+            asset.setId(existingAsset.getId());
+        }
+
+        asset.setCustomerId(getInternalId(tenantId, asset.getCustomerId()));
+
+        Asset savedAsset = assetService.saveAsset(asset);
+
+        return savedAsset;
+    }
+
+    @Override
+    public EntityType getEntityType() {
+        return EntityType.ASSET;
+    }
+
+}

application/src/main/java/org/thingsboard/server/service/expimp/imp/impl/CustomerImportService.java

@@ -0,0 +1,60 @@
+/**
+ * Copyright © 2016-2022 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.service.expimp.imp.impl;
+
+import lombok.RequiredArgsConstructor;
+import org.springframework.stereotype.Service;
+import org.thingsboard.server.common.data.Customer;
+import org.thingsboard.server.common.data.EntityType;
+import org.thingsboard.server.common.data.export.impl.CustomerExportData;
+import org.thingsboard.server.common.data.id.CustomerId;
+import org.thingsboard.server.common.data.id.TenantId;
+import org.thingsboard.server.dao.customer.CustomerService;
+import org.thingsboard.server.queue.util.TbCoreComponent;
+
+@Service
+@TbCoreComponent
+@RequiredArgsConstructor
+public class CustomerImportService extends AbstractEntityImportService<CustomerId, Customer, CustomerExportData> {
+
+    private final CustomerService customerService;
+
+
+    @Override
+    public Customer importEntity(TenantId tenantId, CustomerExportData exportData) {
+        Customer customer = exportData.getCustomer();
+        Customer existingCustomer = findByExternalId(tenantId, customer.getId());
+
+        customer.setExternalId(customer.getId());
+        customer.setTenantId(tenantId);
+
+        if (existingCustomer == null) {
+            customer.setId(null);
+        } else {
+            customer.setId(existingCustomer.getId());
+        }
+
+        Customer savedCustomer = customerService.saveCustomer(customer);
+
+        return savedCustomer;
+    }
+
+    @Override
+    public EntityType getEntityType() {
+        return EntityType.CUSTOMER;
+    }
+
+}

application/src/main/java/org/thingsboard/server/service/expimp/imp/impl/DashboardImportService.java

@@ -0,0 +1,62 @@
+/**
+ * Copyright © 2016-2022 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.service.expimp.imp.impl;
+
+import lombok.RequiredArgsConstructor;
+import org.springframework.stereotype.Service;
+import org.thingsboard.server.common.data.Dashboard;
+import org.thingsboard.server.common.data.EntityType;
+import org.thingsboard.server.common.data.export.impl.DashboardExportData;
+import org.thingsboard.server.common.data.id.DashboardId;
+import org.thingsboard.server.common.data.id.TenantId;
+import org.thingsboard.server.dao.dashboard.DashboardService;
+import org.thingsboard.server.queue.util.TbCoreComponent;
+
+@Service
+@TbCoreComponent
+@RequiredArgsConstructor
+public class DashboardImportService extends AbstractEntityImportService<DashboardId, Dashboard, DashboardExportData> {
+
+    private final DashboardService dashboardService;
+
+
+    @Override
+    public Dashboard importEntity(TenantId tenantId, DashboardExportData exportData) {
+        Dashboard dashboard = exportData.getDashboard();
+        Dashboard existingDashboard = findByExternalId(tenantId, dashboard.getId());
+
+        dashboard.setExternalId(dashboard.getId());
+        dashboard.setTenantId(tenantId);
+
+        if (existingDashboard == null) {
+            dashboard.setId(null);
+            dashboard.setAssignedCustomers(null); // FIXME: need to assign dashboard to customers ?
+        } else {
+            dashboard.setId(existingDashboard.getId());
+            dashboard.setAssignedCustomers(existingDashboard.getAssignedCustomers()); // we left them untouched (FIXME)
+        }
+
+        Dashboard savedDashboard = dashboardService.saveDashboard(dashboard);
+
+        return savedDashboard;
+    }
+
+    @Override
+    public EntityType getEntityType() {
+        return EntityType.DASHBOARD;
+    }
+
+}

application/src/main/java/org/thingsboard/server/service/expimp/imp/impl/DeviceImportService.java

@@ -0,0 +1,81 @@
+/**
+ * Copyright © 2016-2022 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.service.expimp.imp.impl;
+
+import lombok.RequiredArgsConstructor;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+import org.thingsboard.server.cluster.TbClusterService;
+import org.thingsboard.server.common.data.Device;
+import org.thingsboard.server.common.data.EntityType;
+import org.thingsboard.server.common.data.export.impl.DeviceExportData;
+import org.thingsboard.server.common.data.id.DeviceId;
+import org.thingsboard.server.common.data.id.TenantId;
+import org.thingsboard.server.dao.device.DeviceService;
+import org.thingsboard.server.queue.util.TbCoreComponent;
+import org.thingsboard.server.service.action.EntityActionService;
+
+@Service
+@TbCoreComponent
+@RequiredArgsConstructor
+public class DeviceImportService extends AbstractEntityImportService<DeviceId, Device, DeviceExportData> {
+
+    private final DeviceService deviceService;
+
+
+    @Transactional
+    @Override
+    public Device importEntity(TenantId tenantId, DeviceExportData exportData) {
+        Device device = exportData.getDevice();
+        Device existingDevice = findByExternalId(tenantId, device.getId()); // FIXME: !!!
+        // what if exporting and importing back already exported entity ? (save version and then load it back)
+        /*
+         * export entity -> id from env1 -> import this entity -> ...
+         *
+         * maybe find not only by external id but by internal too ? but then what if we will try
+         * */
+
+        device.setExternalId(device.getId());
+        device.setTenantId(tenantId);
+
+        if (existingDevice == null) {
+            device.setId(null);
+            device.setCustomerId(null); // FIXME: find and set customer
+        } else {
+            device.setId(existingDevice.getId());
+            device.setCustomerId(existingDevice.getCustomerId());
+        }
+
+        // TODO or maybe set as additional config whether to update related entities when device already exists ?
+        // TODO: or also whether to ignore not found internal ids
+
+        // FIXME: review use cases for version controlling: in the same tenant, between tenants, between environments and different tenants
+
+        device.setDeviceProfileId(getInternalId(tenantId, device.getDeviceProfileId()));
+        device.setFirmwareId(getInternalId(tenantId, device.getFirmwareId()));
+        device.setSoftwareId(getInternalId(tenantId, device.getSoftwareId()));
+
+        Device savedDevice = deviceService.saveDeviceWithCredentials(device, exportData.getCredentials());
+
+        return savedDevice;
+    }
+
+    @Override
+    public EntityType getEntityType() {
+        return EntityType.DEVICE;
+    }
+
+}

application/src/main/java/org/thingsboard/server/service/expimp/imp/impl/DeviceProfileImportService.java

@@ -0,0 +1,65 @@
+/**
+ * Copyright © 2016-2022 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.service.expimp.imp.impl;
+
+import lombok.RequiredArgsConstructor;
+import org.springframework.stereotype.Service;
+import org.thingsboard.server.common.data.DeviceProfile;
+import org.thingsboard.server.common.data.EntityType;
+import org.thingsboard.server.common.data.export.impl.DeviceProfileExportData;
+import org.thingsboard.server.common.data.id.DeviceProfileId;
+import org.thingsboard.server.common.data.id.TenantId;
+import org.thingsboard.server.dao.device.DeviceProfileService;
+import org.thingsboard.server.queue.util.TbCoreComponent;
+
+@Service
+@TbCoreComponent
+@RequiredArgsConstructor
+public class DeviceProfileImportService extends AbstractEntityImportService<DeviceProfileId, DeviceProfile, DeviceProfileExportData> {
+
+    private final DeviceProfileService deviceProfileService;
+
+
+    @Override
+    public DeviceProfile importEntity(TenantId tenantId, DeviceProfileExportData exportData) {
+        DeviceProfile deviceProfile = exportData.getDeviceProfile();
+        DeviceProfile existingDeviceProfile = findByExternalId(tenantId, deviceProfile.getId());
+
+        deviceProfile.setExternalId(deviceProfile.getId());
+        deviceProfile.setTenantId(tenantId);
+
+        if (existingDeviceProfile == null) {
+            deviceProfile.setId(null);
+        } else {
+            deviceProfile.setId(existingDeviceProfile.getId());
+        }
+
+        deviceProfile.setDefaultRuleChainId(getInternalId(tenantId, deviceProfile.getDefaultRuleChainId()));
+        deviceProfile.setDefaultDashboardId(getInternalId(tenantId, deviceProfile.getDefaultDashboardId()));
+        deviceProfile.setFirmwareId(getInternalId(tenantId, deviceProfile.getFirmwareId()));
+        deviceProfile.setSoftwareId(getInternalId(tenantId, deviceProfile.getSoftwareId()));
+
+        DeviceProfile savedDeviceProfile = deviceProfileService.saveDeviceProfile(deviceProfile);
+
+        return savedDeviceProfile;
+    }
+
+    @Override
+    public EntityType getEntityType() {
+        return EntityType.DEVICE_PROFILE;
+    }
+
+}

application/src/main/java/org/thingsboard/server/service/expimp/imp/impl/RuleChainImportService.java

@@ -0,0 +1,80 @@
+/**
+ * Copyright © 2016-2022 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.service.expimp.imp.impl;
+
+import lombok.RequiredArgsConstructor;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+import org.thingsboard.server.common.data.EntityType;
+import org.thingsboard.server.common.data.export.impl.RuleChainExportData;
+import org.thingsboard.server.common.data.id.RuleChainId;
+import org.thingsboard.server.common.data.id.TenantId;
+import org.thingsboard.server.common.data.rule.RuleChain;
+import org.thingsboard.server.common.data.rule.RuleChainMetaData;
+import org.thingsboard.server.dao.rule.RuleChainService;
+import org.thingsboard.server.queue.util.TbCoreComponent;
+
+@Service
+@TbCoreComponent
+@RequiredArgsConstructor
+public class RuleChainImportService extends AbstractEntityImportService<RuleChainId, RuleChain, RuleChainExportData> {
+
+    private final RuleChainService ruleChainService;
+
+
+    @Transactional
+    @Override
+    public RuleChain importEntity(TenantId tenantId, RuleChainExportData exportData) {
+        RuleChain ruleChain = exportData.getRuleChain();
+        RuleChain existingRuleChain = findByExternalId(tenantId, ruleChain.getId());
+
+        ruleChain.setExternalId(ruleChain.getId());
+        ruleChain.setTenantId(tenantId);
+        ruleChain.setFirstRuleNodeId(null); // will be set during metadata persisting
+
+        if (existingRuleChain == null) {
+            ruleChain.setId(null);
+        } else {
+            ruleChain.setId(existingRuleChain.getId());
+        }
+
+        RuleChain savedRuleChain = ruleChainService.saveRuleChain(ruleChain);
+
+        if (ruleChain.getId() != null) {
+            ruleChainService.deleteRuleNodes(tenantId, ruleChain.getId());
+        }
+        RuleChainMetaData metaData = exportData.getMetaData();
+        metaData.setRuleChainId(savedRuleChain.getId());
+        metaData.getNodes().forEach(ruleNode -> {
+            ruleNode.setId(null);
+            ruleNode.setRuleChainId(null);
+        });
+        metaData.getRuleChainConnections().forEach(ruleChainConnectionInfo -> {
+//            ruleChainConnectionInfo.setTargetRuleChainId();
+            // TODO: check if this thing is needed for "Other Rule Chain Node"
+            // TODO: and check import of tenant rule chains
+        });
+        ruleChainService.saveRuleChainMetaData(tenantId, metaData);
+
+        return savedRuleChain;
+    }
+
+    @Override
+    public EntityType getEntityType() {
+        return EntityType.RULE_CHAIN;
+    }
+
+}

common/dao-api/src/main/java/org/thingsboard/server/dao/rule/RuleChainService.java

@@ -28,7 +28,6 @@ import org.thingsboard.server.common.data.rule.RuleChain;
 import org.thingsboard.server.common.data.rule.RuleChainData;
 import org.thingsboard.server.common.data.rule.RuleChainImportResult;
 import org.thingsboard.server.common.data.rule.RuleChainMetaData;
-import org.thingsboard.server.common.data.rule.RuleChainOutputLabelsUsage;
 import org.thingsboard.server.common.data.rule.RuleChainType;
 import org.thingsboard.server.common.data.rule.RuleChainUpdateResult;
 import org.thingsboard.server.common.data.rule.RuleNode;
@@ -93,4 +92,6 @@ public interface RuleChainService {
     List<RuleNode> findRuleNodesByTenantIdAndType(TenantId tenantId, String name, String toString);
 
     RuleNode saveRuleNode(TenantId tenantId, RuleNode ruleNode);
+
+    void deleteRuleNodes(TenantId tenantId, RuleChainId ruleChainId);
 }

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

@@ -20,6 +20,8 @@ import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonProperty.Access;
 import com.fasterxml.jackson.databind.JsonNode;
 import io.swagger.annotations.ApiModelProperty;
+import lombok.Getter;
+import lombok.Setter;
 import org.thingsboard.server.common.data.id.CustomerId;
 import org.thingsboard.server.common.data.id.TenantId;
 import org.thingsboard.server.common.data.validation.Length;
@@ -36,6 +38,9 @@ public class Customer extends ContactBased<CustomerId> implements HasTenantId {
     @ApiModelProperty(position = 5, required = true, value = "JSON object with Tenant Id")
     private TenantId tenantId;
 
+    @Getter @Setter
+    private CustomerId externalId; // FIXME: add to hashcode, equals, etc
+
     public Customer() {
         super();
     }
@@ -48,6 +53,7 @@ public class Customer extends ContactBased<CustomerId> implements HasTenantId {
         super(customer);
         this.tenantId = customer.getTenantId();
         this.title = customer.getTitle();
+        this.externalId = customer.getExternalId();
     }
 
     public TenantId getTenantId() {

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

@@ -17,14 +17,19 @@ package org.thingsboard.server.common.data;
 
 import com.fasterxml.jackson.databind.JsonNode;
 import io.swagger.annotations.ApiModelProperty;
+import lombok.Getter;
+import lombok.Setter;
 import org.thingsboard.server.common.data.id.DashboardId;
 
 public class Dashboard extends DashboardInfo {
 
     private static final long serialVersionUID = 872682138346187503L;
-    
+
     private transient JsonNode configuration;
-    
+
+    @Getter @Setter
+    private DashboardId externalId;
+
     public Dashboard() {
         super();
     }
@@ -40,6 +45,7 @@ public class Dashboard extends DashboardInfo {
     public Dashboard(Dashboard dashboard) {
         super(dashboard);
         this.configuration = dashboard.getConfiguration();
+        this.externalId = dashboard.getExternalId();
     }
 
     @ApiModelProperty(position = 9, value = "JSON object with main configuration of the dashboard: layouts, widgets, aliases, etc. " +

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

@@ -21,6 +21,8 @@ import com.fasterxml.jackson.databind.JsonNode;
 import io.swagger.annotations.ApiModel;
 import io.swagger.annotations.ApiModelProperty;
 import lombok.EqualsAndHashCode;
+import lombok.Getter;
+import lombok.Setter;
 import lombok.extern.slf4j.Slf4j;
 import org.thingsboard.server.common.data.device.data.DeviceData;
 import org.thingsboard.server.common.data.id.CustomerId;
@@ -61,6 +63,9 @@ public class Device extends SearchTextBasedWithAdditionalInfo<DeviceId> implemen
     private OtaPackageId firmwareId;
     private OtaPackageId softwareId;
 
+    @Getter @Setter
+    private DeviceId externalId;
+
     public Device() {
         super();
     }
@@ -80,6 +85,7 @@ public class Device extends SearchTextBasedWithAdditionalInfo<DeviceId> implemen
         this.setDeviceData(device.getDeviceData());
         this.firmwareId = device.getFirmwareId();
         this.softwareId = device.getSoftwareId();
+        this.externalId = device.getExternalId();
     }
 
     public Device updateDevice(Device device) {
@@ -93,6 +99,7 @@ public class Device extends SearchTextBasedWithAdditionalInfo<DeviceId> implemen
         this.setFirmwareId(device.getFirmwareId());
         this.setSoftwareId(device.getSoftwareId());
         Optional.ofNullable(device.getAdditionalInfo()).ifPresent(this::setAdditionalInfo);
+        this.setExternalId(device.getExternalId());
         return this;
     }
 

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

@@ -90,6 +90,8 @@ public class DeviceProfile extends SearchTextBased<DeviceProfileId> implements H
     @ApiModelProperty(position = 10, value = "Reference to the software OTA package. If present, the specified package will be used as default device software. ")
     private OtaPackageId softwareId;
 
+    private DeviceProfileId externalId;
+
     public DeviceProfile() {
         super();
     }
@@ -112,6 +114,7 @@ public class DeviceProfile extends SearchTextBased<DeviceProfileId> implements H
         this.provisionDeviceKey = deviceProfile.getProvisionDeviceKey();
         this.firmwareId = deviceProfile.getFirmwareId();
         this.softwareId = deviceProfile.getSoftwareId();
+        this.externalId = deviceProfile.getExternalId();
     }
 
     @ApiModelProperty(position = 1, value = "JSON object with the device profile Id. " +

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

@@ -19,6 +19,8 @@ import com.fasterxml.jackson.databind.JsonNode;
 import io.swagger.annotations.ApiModel;
 import io.swagger.annotations.ApiModelProperty;
 import lombok.EqualsAndHashCode;
+import lombok.Getter;
+import lombok.Setter;
 import org.thingsboard.server.common.data.HasCustomerId;
 import org.thingsboard.server.common.data.HasName;
 import org.thingsboard.server.common.data.HasTenantId;
@@ -49,6 +51,9 @@ public class Asset extends SearchTextBasedWithAdditionalInfo<AssetId> implements
     @Length(fieldName = "label")
     private String label;
 
+    @Getter @Setter
+    private AssetId externalId;
+
     public Asset() {
         super();
     }
@@ -64,6 +69,7 @@ public class Asset extends SearchTextBasedWithAdditionalInfo<AssetId> implements
         this.name = asset.getName();
         this.type = asset.getType();
         this.label = asset.getLabel();
+        this.externalId = asset.getExternalId();
     }
 
     public void update(Asset asset) {
@@ -73,6 +79,7 @@ public class Asset extends SearchTextBasedWithAdditionalInfo<AssetId> implements
         this.type = asset.getType();
         this.label = asset.getLabel();
         Optional.ofNullable(asset.getAdditionalInfo()).ifPresent(this::setAdditionalInfo);
+        this.externalId = asset.getExternalId();
     }
 
     @ApiModelProperty(position = 1, value = "JSON object with the asset Id. " +

common/data/src/main/java/org/thingsboard/server/common/data/export/EntitiesExportRequest.java

@@ -0,0 +1,29 @@
+/**
+ * Copyright © 2016-2022 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.export;
+
+import lombok.Data;
+import org.thingsboard.server.common.data.EntityType;
+import org.thingsboard.server.common.data.id.EntityId;
+
+import java.util.List;
+import java.util.Map;
+
+@Data
+public class EntitiesExportRequest {
+    // todo: should be processed in a specific order, e.g. device profiles, then devices, then relations, etc.
+    private Map<EntityType, List<EntityId>> entities;
+}

common/data/src/main/java/org/thingsboard/server/common/data/export/EntitiesExportResponse.java

@@ -0,0 +1,29 @@
+/**
+ * Copyright © 2016-2022 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.export;
+
+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.HasId;
+
+import java.util.List;
+import java.util.Map;
+
+@Data
+public class EntitiesExportResponse {
+    private Map<EntityType, List<EntityExportData<HasId<EntityId>>>> exportData;
+}

common/data/src/main/java/org/thingsboard/server/common/data/export/EntityExportData.java

@@ -0,0 +1,48 @@
+/**
+ * Copyright © 2016-2022 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.export;
+
+import com.fasterxml.jackson.annotation.JsonIgnore;
+import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
+import com.fasterxml.jackson.annotation.JsonSubTypes;
+import com.fasterxml.jackson.annotation.JsonSubTypes.Type;
+import com.fasterxml.jackson.annotation.JsonTypeInfo;
+import org.thingsboard.server.common.data.EntityType;
+import org.thingsboard.server.common.data.export.impl.AssetExportData;
+import org.thingsboard.server.common.data.export.impl.CustomerExportData;
+import org.thingsboard.server.common.data.export.impl.DashboardExportData;
+import org.thingsboard.server.common.data.export.impl.DeviceExportData;
+import org.thingsboard.server.common.data.export.impl.DeviceProfileExportData;
+import org.thingsboard.server.common.data.export.impl.RuleChainExportData;
+import org.thingsboard.server.common.data.id.EntityId;
+import org.thingsboard.server.common.data.id.HasId;
+
+@JsonIgnoreProperties(ignoreUnknown = true)
+@JsonTypeInfo(property = "entityType", use = JsonTypeInfo.Id.NAME)
+@JsonSubTypes({
+        @Type(name = "DEVICE", value = DeviceExportData.class),
+        @Type(name = "DEVICE_PROFILE", value = DeviceProfileExportData.class),
+        @Type(name = "ASSET", value = AssetExportData.class),
+        @Type(name = "RULE_CHAIN", value = RuleChainExportData.class),
+        @Type(name = "DASHBOARD", value = DashboardExportData.class),
+        @Type(name = "CUSTOMER", value = CustomerExportData.class)
+})
+public interface EntityExportData<E extends HasId<? extends EntityId>> {
+
+    @JsonIgnore
+    EntityType getEntityType(); // fixme: maybe remove if not needed, as well as generic
+
+}

common/data/src/main/java/org/thingsboard/server/common/data/export/impl/AssetExportData.java

@@ -0,0 +1,33 @@
+/**
+ * Copyright © 2016-2022 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.export.impl;
+
+import lombok.Data;
+import org.thingsboard.server.common.data.EntityType;
+import org.thingsboard.server.common.data.asset.Asset;
+import org.thingsboard.server.common.data.export.EntityExportData;
+
+@Data
+public class AssetExportData implements EntityExportData<Asset> {
+
+    private Asset asset;
+
+    @Override
+    public EntityType getEntityType() {
+        return EntityType.ASSET;
+    }
+
+}

common/data/src/main/java/org/thingsboard/server/common/data/export/impl/CustomerExportData.java

@@ -0,0 +1,33 @@
+/**
+ * Copyright © 2016-2022 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.export.impl;
+
+import lombok.Data;
+import org.thingsboard.server.common.data.Customer;
+import org.thingsboard.server.common.data.EntityType;
+import org.thingsboard.server.common.data.export.EntityExportData;
+
+@Data
+public class CustomerExportData implements EntityExportData<Customer> {
+
+    private Customer customer;
+
+    @Override
+    public EntityType getEntityType() {
+        return EntityType.CUSTOMER;
+    }
+
+}

common/data/src/main/java/org/thingsboard/server/common/data/export/impl/DashboardExportData.java

@@ -0,0 +1,33 @@
+/**
+ * Copyright © 2016-2022 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.export.impl;
+
+import lombok.Data;
+import org.thingsboard.server.common.data.Dashboard;
+import org.thingsboard.server.common.data.EntityType;
+import org.thingsboard.server.common.data.export.EntityExportData;
+
+@Data
+public class DashboardExportData implements EntityExportData<Dashboard> {
+
+    private Dashboard dashboard;
+
+    @Override
+    public EntityType getEntityType() {
+        return EntityType.DASHBOARD;
+    }
+
+}

common/data/src/main/java/org/thingsboard/server/common/data/export/impl/DeviceExportData.java

@@ -0,0 +1,35 @@
+/**
+ * Copyright © 2016-2022 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.export.impl;
+
+import lombok.Data;
+import org.thingsboard.server.common.data.Device;
+import org.thingsboard.server.common.data.EntityType;
+import org.thingsboard.server.common.data.export.EntityExportData;
+import org.thingsboard.server.common.data.security.DeviceCredentials;
+
+@Data
+public class DeviceExportData implements EntityExportData<Device> {
+
+    private Device device;
+    private DeviceCredentials credentials;
+
+    @Override
+    public EntityType getEntityType() {
+        return EntityType.DEVICE;
+    }
+
+}

common/data/src/main/java/org/thingsboard/server/common/data/export/impl/DeviceProfileExportData.java

@@ -0,0 +1,33 @@
+/**
+ * Copyright © 2016-2022 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.export.impl;
+
+import lombok.Data;
+import org.thingsboard.server.common.data.DeviceProfile;
+import org.thingsboard.server.common.data.EntityType;
+import org.thingsboard.server.common.data.export.EntityExportData;
+
+@Data
+public class DeviceProfileExportData implements EntityExportData<DeviceProfile> {
+
+    private DeviceProfile deviceProfile;
+
+    @Override
+    public EntityType getEntityType() {
+        return EntityType.DEVICE_PROFILE;
+    }
+
+}

common/data/src/main/java/org/thingsboard/server/common/data/export/impl/RuleChainExportData.java

@@ -0,0 +1,35 @@
+/**
+ * Copyright © 2016-2022 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.export.impl;
+
+import lombok.Data;
+import org.thingsboard.server.common.data.EntityType;
+import org.thingsboard.server.common.data.export.EntityExportData;
+import org.thingsboard.server.common.data.rule.RuleChain;
+import org.thingsboard.server.common.data.rule.RuleChainMetaData;
+
+@Data
+public class RuleChainExportData implements EntityExportData<RuleChain> {
+
+    private RuleChain ruleChain;
+    private RuleChainMetaData metaData;
+
+    @Override
+    public EntityType getEntityType() {
+        return EntityType.RULE_CHAIN;
+    }
+
+}

common/data/src/main/java/org/thingsboard/server/common/data/rule/RuleChain.java

@@ -59,6 +59,8 @@ public class RuleChain extends SearchTextBasedWithAdditionalInfo<RuleChainId> im
     @JsonIgnore
     private byte[] configurationBytes;
 
+    private RuleChainId externalId;
+
     public RuleChain() {
         super();
     }
@@ -75,6 +77,7 @@ public class RuleChain extends SearchTextBasedWithAdditionalInfo<RuleChainId> im
         this.firstRuleNodeId = ruleChain.getFirstRuleNodeId();
         this.root = ruleChain.isRoot();
         this.setConfiguration(ruleChain.getConfiguration());
+        this.setExternalId(ruleChain.getExternalId());
     }
 
     @Override

dao/src/main/java/org/thingsboard/server/dao/ExportableEntityDao.java

@@ -0,0 +1,36 @@
+/**
+ * Copyright © 2016-2022 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;
+
+import org.thingsboard.server.common.data.EntityType;
+
+import java.util.UUID;
+
+public interface ExportableEntityDao<T> {
+
+    T findByTenantIdAndExternalId(UUID tenantId, UUID externalId);
+
+    T findByTenantIdAndId(UUID tenantId, UUID id);
+    // fixme: get rid of boilerplate ?
+
+    EntityType getEntityType();
+
+    /*
+     * default <D extends BaseEntity<T>> ExportableEntityRepository<D> getExportableEntityRepository() {
+     * ((ExportableEntityRepository) getJpaRepository).find...
+     * */
+
+}

dao/src/main/java/org/thingsboard/server/dao/ExportableEntityRepository.java

@@ -0,0 +1,26 @@
+/**
+ * Copyright © 2016-2022 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;
+
+import java.util.UUID;
+
+public interface ExportableEntityRepository<D> {
+
+    D findByTenantIdAndExternalId(UUID tenantId, UUID externalId);
+
+    D findByTenantIdAndId(UUID tenantId, UUID id);
+
+}

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

@@ -22,8 +22,8 @@ import org.thingsboard.server.common.data.asset.AssetInfo;
 import org.thingsboard.server.common.data.id.TenantId;
 import org.thingsboard.server.common.data.page.PageData;
 import org.thingsboard.server.common.data.page.PageLink;
-import org.thingsboard.server.common.data.page.TimePageLink;
 import org.thingsboard.server.dao.Dao;
+import org.thingsboard.server.dao.ExportableEntityDao;
 import org.thingsboard.server.dao.TenantEntityDao;
 
 import java.util.List;
@@ -34,7 +34,7 @@ import java.util.UUID;
  * The Interface AssetDao.
  *
  */
-public interface AssetDao extends Dao<Asset>, TenantEntityDao {
+public interface AssetDao extends Dao<Asset>, TenantEntityDao, ExportableEntityDao<Asset> {
 
     /**
      * Find asset info by id.

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

@@ -20,6 +20,7 @@ import org.thingsboard.server.common.data.id.TenantId;
 import org.thingsboard.server.common.data.page.PageData;
 import org.thingsboard.server.common.data.page.PageLink;
 import org.thingsboard.server.dao.Dao;
+import org.thingsboard.server.dao.ExportableEntityDao;
 import org.thingsboard.server.dao.TenantEntityDao;
 
 import java.util.Optional;
@@ -28,7 +29,7 @@ import java.util.UUID;
 /**
  * The Interface CustomerDao.
  */
-public interface CustomerDao extends Dao<Customer>, TenantEntityDao {
+public interface CustomerDao extends Dao<Customer>, TenantEntityDao, ExportableEntityDao<Customer> {
 
     /**
      * Save or update customer object
@@ -37,7 +38,7 @@ public interface CustomerDao extends Dao<Customer>, TenantEntityDao {
      * @return saved customer object
      */
     Customer save(TenantId tenantId, Customer customer);
-    
+
     /**
      * Find customers by tenant id and page link.
      *

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

@@ -18,12 +18,13 @@ package org.thingsboard.server.dao.dashboard;
 import org.thingsboard.server.common.data.Dashboard;
 import org.thingsboard.server.common.data.id.TenantId;
 import org.thingsboard.server.dao.Dao;
+import org.thingsboard.server.dao.ExportableEntityDao;
 import org.thingsboard.server.dao.TenantEntityDao;
 
 /**
  * The Interface DashboardDao.
  */
-public interface DashboardDao extends Dao<Dashboard>, TenantEntityDao {
+public interface DashboardDao extends Dao<Dashboard>, TenantEntityDao, ExportableEntityDao<Dashboard> {
 
     /**
      * Save or update dashboard object

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

@@ -25,6 +25,7 @@ import org.thingsboard.server.common.data.ota.OtaPackageType;
 import org.thingsboard.server.common.data.page.PageData;
 import org.thingsboard.server.common.data.page.PageLink;
 import org.thingsboard.server.dao.Dao;
+import org.thingsboard.server.dao.ExportableEntityDao;
 import org.thingsboard.server.dao.TenantEntityDao;
 
 import java.util.List;
@@ -35,7 +36,7 @@ import java.util.UUID;
  * The Interface DeviceDao.
  *
  */
-public interface DeviceDao extends Dao<Device>, TenantEntityDao {
+public interface DeviceDao extends Dao<Device>, TenantEntityDao, ExportableEntityDao<Device> {
 
     /**
      * Find device info by id.

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

@@ -21,10 +21,11 @@ import org.thingsboard.server.common.data.id.TenantId;
 import org.thingsboard.server.common.data.page.PageData;
 import org.thingsboard.server.common.data.page.PageLink;
 import org.thingsboard.server.dao.Dao;
+import org.thingsboard.server.dao.ExportableEntityDao;
 
 import java.util.UUID;
 
-public interface DeviceProfileDao extends Dao<DeviceProfile> {
+public interface DeviceProfileDao extends Dao<DeviceProfile>, ExportableEntityDao<DeviceProfile> {
 
     DeviceProfileInfo findDeviceProfileInfoById(TenantId tenantId, UUID deviceProfileId);
 

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

@@ -559,6 +559,8 @@ public class ModelConstants {
 
     public static final String EDGE_EVENT_BY_ID_VIEW_NAME = "edge_event_by_id";
 
+    public static final String EXTERNAL_ID_PROPERTY = "external_id";
+
     /**
      * Cassandra attributes and timeseries constants.
      */

dao/src/main/java/org/thingsboard/server/dao/model/sql/AbstractAssetEntity.java

@@ -38,6 +38,7 @@ import static org.thingsboard.server.dao.model.ModelConstants.ASSET_LABEL_PROPER
 import static org.thingsboard.server.dao.model.ModelConstants.ASSET_NAME_PROPERTY;
 import static org.thingsboard.server.dao.model.ModelConstants.ASSET_TENANT_ID_PROPERTY;
 import static org.thingsboard.server.dao.model.ModelConstants.ASSET_TYPE_PROPERTY;
+import static org.thingsboard.server.dao.model.ModelConstants.EXTERNAL_ID_PROPERTY;
 import static org.thingsboard.server.dao.model.ModelConstants.SEARCH_TEXT_PROPERTY;
 
 @Data
@@ -68,6 +69,9 @@ public abstract class AbstractAssetEntity<T extends Asset> extends BaseSqlEntity
     @Column(name = ModelConstants.ASSET_ADDITIONAL_INFO_PROPERTY)
     private JsonNode additionalInfo;
 
+    @Column(name = EXTERNAL_ID_PROPERTY)
+    private UUID externalId;
+
     public AbstractAssetEntity() {
         super();
     }
@@ -87,6 +91,9 @@ public abstract class AbstractAssetEntity<T extends Asset> extends BaseSqlEntity
         this.type = asset.getType();
         this.label = asset.getLabel();
         this.additionalInfo = asset.getAdditionalInfo();
+        if (asset.getExternalId() != null) {
+            this.externalId = asset.getExternalId().getId();
+        }
     }
 
     public AbstractAssetEntity(AssetEntity assetEntity) {
@@ -99,6 +106,7 @@ public abstract class AbstractAssetEntity<T extends Asset> extends BaseSqlEntity
         this.label = assetEntity.getLabel();
         this.searchText = assetEntity.getSearchText();
         this.additionalInfo = assetEntity.getAdditionalInfo();
+        this.externalId = assetEntity.getExternalId();
     }
 
     @Override
@@ -128,6 +136,9 @@ public abstract class AbstractAssetEntity<T extends Asset> extends BaseSqlEntity
         asset.setType(type);
         asset.setLabel(label);
         asset.setAdditionalInfo(additionalInfo);
+        if (externalId != null) {
+            asset.setExternalId(new AssetId(externalId));
+        }
         return asset;
     }
 

dao/src/main/java/org/thingsboard/server/dao/model/sql/AbstractDeviceEntity.java

@@ -84,6 +84,9 @@ public abstract class AbstractDeviceEntity<T extends Device> extends BaseSqlEnti
     @Column(name = ModelConstants.DEVICE_DEVICE_DATA_PROPERTY, columnDefinition = "jsonb")
     private JsonNode deviceData;
 
+    @Column(name = ModelConstants.EXTERNAL_ID_PROPERTY, columnDefinition = "uuid")
+    private UUID externalId;
+
     public AbstractDeviceEntity() {
         super();
     }
@@ -113,6 +116,9 @@ public abstract class AbstractDeviceEntity<T extends Device> extends BaseSqlEnti
         this.type = device.getType();
         this.label = device.getLabel();
         this.additionalInfo = device.getAdditionalInfo();
+        if (device.getExternalId() != null) {
+            this.externalId = device.getExternalId().getId();
+        }
     }
 
     public AbstractDeviceEntity(DeviceEntity deviceEntity) {
@@ -129,6 +135,7 @@ public abstract class AbstractDeviceEntity<T extends Device> extends BaseSqlEnti
         this.additionalInfo = deviceEntity.getAdditionalInfo();
         this.firmwareId = deviceEntity.getFirmwareId();
         this.softwareId = deviceEntity.getSoftwareId();
+        this.externalId = deviceEntity.getExternalId();
     }
 
     @Override
@@ -164,6 +171,9 @@ public abstract class AbstractDeviceEntity<T extends Device> extends BaseSqlEnti
         device.setType(type);
         device.setLabel(label);
         device.setAdditionalInfo(additionalInfo);
+        if (externalId != null) {
+            device.setExternalId(new DeviceId(externalId));
+        }
         return device;
     }
 

dao/src/main/java/org/thingsboard/server/dao/model/sql/CustomerEntity.java

@@ -77,6 +77,9 @@ public final class CustomerEntity extends BaseSqlEntity<Customer> implements Sea
     @Column(name = ModelConstants.CUSTOMER_ADDITIONAL_INFO_PROPERTY)
     private JsonNode additionalInfo;
 
+    @Column(name = ModelConstants.EXTERNAL_ID_PROPERTY)
+    private UUID externalId;
+
     public CustomerEntity() {
         super();
     }
@@ -97,6 +100,9 @@ public final class CustomerEntity extends BaseSqlEntity<Customer> implements Sea
         this.phone = customer.getPhone();
         this.email = customer.getEmail();
         this.additionalInfo = customer.getAdditionalInfo();
+        if (customer.getExternalId() != null) {
+            this.externalId = customer.getExternalId().getId();
+        }
     }
 
     @Override
@@ -124,6 +130,9 @@ public final class CustomerEntity extends BaseSqlEntity<Customer> implements Sea
         customer.setPhone(phone);
         customer.setEmail(email);
         customer.setAdditionalInfo(additionalInfo);
+        if (externalId != null) {
+            customer.setExternalId(new CustomerId(externalId));
+        }
         return customer;
     }
 

dao/src/main/java/org/thingsboard/server/dao/model/sql/DashboardEntity.java

@@ -78,6 +78,9 @@ public final class DashboardEntity extends BaseSqlEntity<Dashboard> implements S
     @Column(name = ModelConstants.DASHBOARD_CONFIGURATION_PROPERTY)
     private JsonNode configuration;
 
+    @Column(name = ModelConstants.EXTERNAL_ID_PROPERTY)
+    private UUID externalId;
+
     public DashboardEntity() {
         super();
     }
@@ -102,6 +105,9 @@ public final class DashboardEntity extends BaseSqlEntity<Dashboard> implements S
         this.mobileHide = dashboard.isMobileHide();
         this.mobileOrder = dashboard.getMobileOrder();
         this.configuration = dashboard.getConfiguration();
+        if (dashboard.getExternalId() != null) {
+            this.externalId = dashboard.getExternalId().getId();
+        }
     }
 
     @Override
@@ -133,6 +139,9 @@ public final class DashboardEntity extends BaseSqlEntity<Dashboard> implements S
         dashboard.setMobileHide(mobileHide);
         dashboard.setMobileOrder(mobileOrder);
         dashboard.setConfiguration(configuration);
+        if (externalId != null) {
+            dashboard.setExternalId(new DashboardId(externalId));
+        }
         return dashboard;
     }
 }

dao/src/main/java/org/thingsboard/server/dao/model/sql/DeviceProfileEntity.java

@@ -103,6 +103,9 @@ public final class DeviceProfileEntity extends BaseSqlEntity<DeviceProfile> impl
     @Column(name = ModelConstants.DEVICE_PROFILE_SOFTWARE_ID_PROPERTY)
     private UUID softwareId;
 
+    @Column(name = ModelConstants.EXTERNAL_ID_PROPERTY)
+    private UUID externalId;
+
     public DeviceProfileEntity() {
         super();
     }
@@ -137,6 +140,9 @@ public final class DeviceProfileEntity extends BaseSqlEntity<DeviceProfile> impl
         if (deviceProfile.getSoftwareId() != null) {
             this.softwareId = deviceProfile.getSoftwareId().getId();
         }
+        if (deviceProfile.getExternalId() != null) {
+            this.externalId = deviceProfile.getExternalId().getId();
+        }
     }
 
     @Override
@@ -184,6 +190,9 @@ public final class DeviceProfileEntity extends BaseSqlEntity<DeviceProfile> impl
         if (softwareId != null) {
             deviceProfile.setSoftwareId(new OtaPackageId(softwareId));
         }
+        if (externalId != null) {
+            deviceProfile.setExternalId(new DeviceProfileId(externalId));
+        }
 
         return deviceProfile;
     }

dao/src/main/java/org/thingsboard/server/dao/model/sql/RuleChainEntity.java

@@ -75,6 +75,9 @@ public class RuleChainEntity extends BaseSqlEntity<RuleChain> implements SearchT
     @Column(name = ModelConstants.ADDITIONAL_INFO_PROPERTY)
     private JsonNode additionalInfo;
 
+    @Column(name = ModelConstants.EXTERNAL_ID_PROPERTY)
+    private UUID externalId;
+
     public RuleChainEntity() {
     }
 
@@ -94,6 +97,9 @@ public class RuleChainEntity extends BaseSqlEntity<RuleChain> implements SearchT
         this.debugMode = ruleChain.isDebugMode();
         this.configuration = ruleChain.getConfiguration();
         this.additionalInfo = ruleChain.getAdditionalInfo();
+        if (ruleChain.getExternalId() != null) {
+            this.externalId = ruleChain.getExternalId().getId();
+        }
     }
 
     @Override
@@ -120,6 +126,9 @@ public class RuleChainEntity extends BaseSqlEntity<RuleChain> implements SearchT
         ruleChain.setDebugMode(debugMode);
         ruleChain.setConfiguration(configuration);
         ruleChain.setAdditionalInfo(additionalInfo);
+        if (externalId != null) {
+            ruleChain.setExternalId(new RuleChainId(externalId));
+        }
         return ruleChain;
     }
 }

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

@@ -684,6 +684,11 @@ public class BaseRuleChainService extends AbstractEntityService implements RuleC
                 throw t;
             }
         }
+        deleteRuleNodes(tenantId, ruleChainId);
+    }
+
+    @Override
+    public void deleteRuleNodes(TenantId tenantId, RuleChainId ruleChainId) {
         List<EntityRelation> nodeRelations = getRuleChainToNodeRelations(tenantId, ruleChainId);
         for (EntityRelation relation : nodeRelations) {
             deleteRuleNode(tenantId, relation.getTo());

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

@@ -19,19 +19,18 @@ import org.thingsboard.server.common.data.id.TenantId;
 import org.thingsboard.server.common.data.page.PageData;
 import org.thingsboard.server.common.data.page.PageLink;
 import org.thingsboard.server.common.data.rule.RuleChain;
-import org.thingsboard.server.common.data.rule.RuleChainOutputLabelsUsage;
 import org.thingsboard.server.common.data.rule.RuleChainType;
 import org.thingsboard.server.dao.Dao;
+import org.thingsboard.server.dao.ExportableEntityDao;
 import org.thingsboard.server.dao.TenantEntityDao;
 
 import java.util.Collection;
-import java.util.List;
 import java.util.UUID;
 
 /**
  * Created by igor on 3/12/18.
  */
-public interface RuleChainDao extends Dao<RuleChain>, TenantEntityDao {
+public interface RuleChainDao extends Dao<RuleChain>, TenantEntityDao, ExportableEntityDao<RuleChain> {
 
     /**
      * Find rule chains by tenantId and page link.
@@ -81,4 +80,6 @@ public interface RuleChainDao extends Dao<RuleChain>, TenantEntityDao {
 
     Collection<RuleChain> findByTenantIdAndTypeAndName(TenantId tenantId, RuleChainType type, String name);
 
+    RuleChain findByTenantIdAndExternalId(UUID tenantId, UUID externalId);
+
 }

dao/src/main/java/org/thingsboard/server/dao/sql/asset/AssetRepository.java

@@ -20,6 +20,7 @@ import org.springframework.data.domain.Pageable;
 import org.springframework.data.jpa.repository.JpaRepository;
 import org.springframework.data.jpa.repository.Query;
 import org.springframework.data.repository.query.Param;
+import org.thingsboard.server.dao.ExportableEntityRepository;
 import org.thingsboard.server.dao.model.sql.AssetEntity;
 import org.thingsboard.server.dao.model.sql.AssetInfoEntity;
 
@@ -29,7 +30,7 @@ import java.util.UUID;
 /**
  * Created by Valerii Sosliuk on 5/21/2017.
  */
-public interface AssetRepository extends JpaRepository<AssetEntity, UUID> {
+public interface AssetRepository extends JpaRepository<AssetEntity, UUID>, ExportableEntityRepository<AssetEntity> {
 
     @Query("SELECT new org.thingsboard.server.dao.model.sql.AssetInfoEntity(a, c.title, c.additionalInfo) " +
             "FROM AssetEntity a " +

dao/src/main/java/org/thingsboard/server/dao/sql/asset/JpaAssetDao.java

@@ -208,4 +208,20 @@ public class JpaAssetDao extends JpaAbstractSearchTextDao<AssetEntity, Asset> im
     public Long countByTenantId(TenantId tenantId) {
         return assetRepository.countByTenantIdAndTypeIsNot(tenantId.getId(), TB_SERVICE_QUEUE);
     }
+
+    @Override
+    public Asset findByTenantIdAndExternalId(UUID tenantId, UUID externalId) {
+        return DaoUtil.getData(assetRepository.findByTenantIdAndExternalId(tenantId, externalId));
+    }
+
+    @Override
+    public Asset findByTenantIdAndId(UUID tenantId, UUID id) {
+        return DaoUtil.getData(assetRepository.findByTenantIdAndId(tenantId, id));
+    }
+
+    @Override
+    public EntityType getEntityType() {
+        return EntityType.ASSET;
+    }
+
 }

dao/src/main/java/org/thingsboard/server/dao/sql/customer/CustomerRepository.java

@@ -20,6 +20,7 @@ import org.springframework.data.domain.Pageable;
 import org.springframework.data.jpa.repository.JpaRepository;
 import org.springframework.data.jpa.repository.Query;
 import org.springframework.data.repository.query.Param;
+import org.thingsboard.server.dao.ExportableEntityRepository;
 import org.thingsboard.server.dao.model.sql.CustomerEntity;
 
 import java.util.UUID;
@@ -27,7 +28,7 @@ import java.util.UUID;
 /**
  * Created by Valerii Sosliuk on 5/6/2017.
  */
-public interface CustomerRepository extends JpaRepository<CustomerEntity, UUID> {
+public interface CustomerRepository extends JpaRepository<CustomerEntity, UUID>, ExportableEntityRepository<CustomerEntity> {
 
     @Query("SELECT c FROM CustomerEntity c WHERE c.tenantId = :tenantId " +
             "AND LOWER(c.searchText) LIKE LOWER(CONCAT('%', :textSearch, '%'))")

dao/src/main/java/org/thingsboard/server/dao/sql/customer/JpaCustomerDao.java

@@ -19,6 +19,7 @@ import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.data.jpa.repository.JpaRepository;
 import org.springframework.stereotype.Component;
 import org.thingsboard.server.common.data.Customer;
+import org.thingsboard.server.common.data.EntityType;
 import org.thingsboard.server.common.data.id.TenantId;
 import org.thingsboard.server.common.data.page.PageData;
 import org.thingsboard.server.common.data.page.PageLink;
@@ -68,4 +69,20 @@ public class JpaCustomerDao extends JpaAbstractSearchTextDao<CustomerEntity, Cus
     public Long countByTenantId(TenantId tenantId) {
         return customerRepository.countByTenantId(tenantId.getId());
     }
+
+    @Override
+    public Customer findByTenantIdAndExternalId(UUID tenantId, UUID externalId) {
+        return DaoUtil.getData(customerRepository.findByTenantIdAndExternalId(tenantId, externalId));
+    }
+
+    @Override
+    public Customer findByTenantIdAndId(UUID tenantId, UUID id) {
+        return DaoUtil.getData(customerRepository.findByTenantIdAndId(tenantId, id));
+    }
+
+    @Override
+    public EntityType getEntityType() {
+        return EntityType.CUSTOMER;
+    }
+
 }

dao/src/main/java/org/thingsboard/server/dao/sql/dashboard/DashboardRepository.java

@@ -16,6 +16,7 @@
 package org.thingsboard.server.dao.sql.dashboard;
 
 import org.springframework.data.jpa.repository.JpaRepository;
+import org.thingsboard.server.dao.ExportableEntityRepository;
 import org.thingsboard.server.dao.model.sql.DashboardEntity;
 
 import java.util.UUID;
@@ -23,7 +24,8 @@ import java.util.UUID;
 /**
  * Created by Valerii Sosliuk on 5/6/2017.
  */
-public interface DashboardRepository extends JpaRepository<DashboardEntity, UUID> {
+public interface DashboardRepository extends JpaRepository<DashboardEntity, UUID>, ExportableEntityRepository<DashboardEntity> {
 
     Long countByTenantId(UUID tenantId);
+
 }

dao/src/main/java/org/thingsboard/server/dao/sql/dashboard/JpaDashboardDao.java

@@ -19,7 +19,9 @@ import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.data.jpa.repository.JpaRepository;
 import org.springframework.stereotype.Component;
 import org.thingsboard.server.common.data.Dashboard;
+import org.thingsboard.server.common.data.EntityType;
 import org.thingsboard.server.common.data.id.TenantId;
+import org.thingsboard.server.dao.DaoUtil;
 import org.thingsboard.server.dao.dashboard.DashboardDao;
 import org.thingsboard.server.dao.model.sql.DashboardEntity;
 import org.thingsboard.server.dao.sql.JpaAbstractSearchTextDao;
@@ -49,4 +51,20 @@ public class JpaDashboardDao extends JpaAbstractSearchTextDao<DashboardEntity, D
     public Long countByTenantId(TenantId tenantId) {
         return dashboardRepository.countByTenantId(tenantId.getId());
     }
+
+    @Override
+    public Dashboard findByTenantIdAndExternalId(UUID tenantId, UUID externalId) {
+        return DaoUtil.getData(dashboardRepository.findByTenantIdAndExternalId(tenantId, externalId));
+    }
+
+    @Override
+    public Dashboard findByTenantIdAndId(UUID tenantId, UUID id) {
+        return DaoUtil.getData(dashboardRepository.findByTenantIdAndId(tenantId, id));
+    }
+
+    @Override
+    public EntityType getEntityType() {
+        return EntityType.DASHBOARD;
+    }
+
 }

dao/src/main/java/org/thingsboard/server/dao/sql/device/DeviceProfileRepository.java

@@ -19,15 +19,15 @@ import org.springframework.data.domain.Page;
 import org.springframework.data.domain.Pageable;
 import org.springframework.data.jpa.repository.JpaRepository;
 import org.springframework.data.jpa.repository.Query;
-import org.springframework.data.repository.PagingAndSortingRepository;
 import org.springframework.data.repository.query.Param;
 import org.thingsboard.server.common.data.DeviceProfileInfo;
 import org.thingsboard.server.common.data.DeviceTransportType;
+import org.thingsboard.server.dao.ExportableEntityRepository;
 import org.thingsboard.server.dao.model.sql.DeviceProfileEntity;
 
 import java.util.UUID;
 
-public interface DeviceProfileRepository extends JpaRepository<DeviceProfileEntity, UUID> {
+public interface DeviceProfileRepository extends JpaRepository<DeviceProfileEntity, UUID>, ExportableEntityRepository<DeviceProfileEntity> {
 
     @Query("SELECT new org.thingsboard.server.common.data.DeviceProfileInfo(d.id, d.name, d.image, d.defaultDashboardId, d.type, d.transportType) " +
             "FROM DeviceProfileEntity d " +

dao/src/main/java/org/thingsboard/server/dao/sql/device/DeviceRepository.java

@@ -21,6 +21,7 @@ import org.springframework.data.jpa.repository.JpaRepository;
 import org.springframework.data.jpa.repository.Query;
 import org.springframework.data.repository.query.Param;
 import org.thingsboard.server.common.data.DeviceTransportType;
+import org.thingsboard.server.dao.ExportableEntityRepository;
 import org.thingsboard.server.dao.model.sql.DeviceEntity;
 import org.thingsboard.server.dao.model.sql.DeviceInfoEntity;
 
@@ -30,7 +31,7 @@ import java.util.UUID;
 /**
  * Created by Valerii Sosliuk on 5/6/2017.
  */
-public interface DeviceRepository extends JpaRepository<DeviceEntity, UUID> {
+public interface DeviceRepository extends JpaRepository<DeviceEntity, UUID>, ExportableEntityRepository<DeviceEntity> {
 
     @Query("SELECT new org.thingsboard.server.dao.model.sql.DeviceInfoEntity(d, c.title, c.additionalInfo, p.name) " +
             "FROM DeviceEntity d " +

dao/src/main/java/org/thingsboard/server/dao/sql/device/JpaDeviceDao.java

@@ -302,4 +302,20 @@ public class JpaDeviceDao extends JpaAbstractSearchTextDao<DeviceEntity, Device>
                         Objects.toString(pageLink.getTextSearch(), ""),
                         DaoUtil.toPageable(pageLink)));
     }
+
+    @Override
+    public Device findByTenantIdAndExternalId(UUID tenantId, UUID externalId) {
+        return DaoUtil.getData(deviceRepository.findByTenantIdAndExternalId(tenantId, externalId));
+    }
+
+    @Override
+    public Device findByTenantIdAndId(UUID tenantId, UUID id) {
+        return findDeviceByTenantIdAndId(TenantId.fromUUID(tenantId), id);
+    }
+
+    @Override
+    public EntityType getEntityType() {
+        return EntityType.DEVICE;
+    }
+
 }

dao/src/main/java/org/thingsboard/server/dao/sql/device/JpaDeviceProfileDao.java

@@ -23,6 +23,7 @@ import org.springframework.transaction.annotation.Transactional;
 import org.thingsboard.server.common.data.DeviceProfile;
 import org.thingsboard.server.common.data.DeviceProfileInfo;
 import org.thingsboard.server.common.data.DeviceTransportType;
+import org.thingsboard.server.common.data.EntityType;
 import org.thingsboard.server.common.data.id.TenantId;
 import org.thingsboard.server.common.data.page.PageData;
 import org.thingsboard.server.common.data.page.PageLink;
@@ -109,4 +110,20 @@ public class JpaDeviceProfileDao extends JpaAbstractSearchTextDao<DeviceProfileE
     public DeviceProfile findByName(TenantId tenantId, String profileName) {
         return DaoUtil.getData(deviceProfileRepository.findByTenantIdAndName(tenantId.getId(), profileName));
     }
+
+    @Override
+    public DeviceProfile findByTenantIdAndExternalId(UUID tenantId, UUID externalId) {
+        return DaoUtil.getData(deviceProfileRepository.findByTenantIdAndExternalId(tenantId, externalId));
+    }
+
+    @Override
+    public DeviceProfile findByTenantIdAndId(UUID tenantId, UUID id) {
+        return DaoUtil.getData(deviceProfileRepository.findByTenantIdAndId(tenantId, id));
+    }
+
+    @Override
+    public EntityType getEntityType() {
+        return EntityType.DEVICE_PROFILE;
+    }
+
 }

dao/src/main/java/org/thingsboard/server/dao/sql/rule/JpaRuleChainDao.java

@@ -19,6 +19,7 @@ import lombok.extern.slf4j.Slf4j;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.data.jpa.repository.JpaRepository;
 import org.springframework.stereotype.Component;
+import org.thingsboard.server.common.data.EntityType;
 import org.thingsboard.server.common.data.id.TenantId;
 import org.thingsboard.server.common.data.page.PageData;
 import org.thingsboard.server.common.data.page.PageLink;
@@ -108,4 +109,19 @@ public class JpaRuleChainDao extends JpaAbstractSearchTextDao<RuleChainEntity, R
         return ruleChainRepository.countByTenantId(tenantId.getId());
     }
 
+    @Override
+    public RuleChain findByTenantIdAndExternalId(UUID tenantId, UUID externalId) {
+        return DaoUtil.getData(ruleChainRepository.findByTenantIdAndExternalId(tenantId, externalId));
+    }
+
+    @Override
+    public RuleChain findByTenantIdAndId(UUID tenantId, UUID id) {
+        return DaoUtil.getData(ruleChainRepository.findByTenantIdAndId(tenantId, id));
+    }
+
+    @Override
+    public EntityType getEntityType() {
+        return EntityType.RULE_CHAIN;
+    }
+
 }

dao/src/main/java/org/thingsboard/server/dao/sql/rule/RuleChainRepository.java

@@ -21,12 +21,13 @@ import org.springframework.data.jpa.repository.JpaRepository;
 import org.springframework.data.jpa.repository.Query;
 import org.springframework.data.repository.query.Param;
 import org.thingsboard.server.common.data.rule.RuleChainType;
+import org.thingsboard.server.dao.ExportableEntityRepository;
 import org.thingsboard.server.dao.model.sql.RuleChainEntity;
 
 import java.util.List;
 import java.util.UUID;
 
-public interface RuleChainRepository extends JpaRepository<RuleChainEntity, UUID> {
+public interface RuleChainRepository extends JpaRepository<RuleChainEntity, UUID>, ExportableEntityRepository<RuleChainEntity> {
 
     @Query("SELECT rc FROM RuleChainEntity rc WHERE rc.tenantId = :tenantId " +
             "AND LOWER(rc.searchText) LIKE LOWER(CONCAT('%', :searchText, '%'))")

dao/src/main/resources/sql/schema-entities.sql

@@ -72,17 +72,19 @@ CREATE TABLE IF NOT EXISTS entity_alarm (
     CONSTRAINT fk_entity_alarm_id FOREIGN KEY (alarm_id) REFERENCES alarm(id) ON DELETE CASCADE
 );
 
-CREATE TABLE IF NOT EXISTS asset (
-    id uuid NOT NULL CONSTRAINT asset_pkey PRIMARY KEY,
-    created_time bigint NOT NULL,
-    additional_info varchar,
-    customer_id uuid,
-    name varchar(255),
-    label varchar(255),
-    search_text varchar(255),
-    tenant_id uuid,
-    type varchar(255),
-    CONSTRAINT asset_name_unq_key UNIQUE (tenant_id, name)
+CREATE TABLE IF NOT EXISTS asset(
+                                    id              uuid   NOT NULL
+                                        CONSTRAINT asset_pkey PRIMARY KEY,
+                                    created_time    bigint NOT NULL,
+                                    additional_info varchar,
+                                    customer_id     uuid,
+                                    name            varchar(255),
+                                    label           varchar(255),
+                                    search_text     varchar(255),
+                                    tenant_id       uuid,
+                                    type            varchar(255),
+                                    external_id     uuid,
+                                    CONSTRAINT asset_name_unq_key UNIQUE (tenant_id, name)
 );
 
 CREATE TABLE IF NOT EXISTS audit_log (
@@ -128,47 +130,53 @@ CREATE TABLE IF NOT EXISTS component_descriptor (
 );
 
 CREATE TABLE IF NOT EXISTS customer (
-    id uuid NOT NULL CONSTRAINT customer_pkey PRIMARY KEY,
-    created_time bigint NOT NULL,
-    additional_info varchar,
-    address varchar,
-    address2 varchar,
-    city varchar(255),
-    country varchar(255),
-    email varchar(255),
-    phone varchar(255),
-    search_text varchar(255),
-    state varchar(255),
-    tenant_id uuid,
-    title varchar(255),
-    zip varchar(255)
-);
-
-CREATE TABLE IF NOT EXISTS dashboard (
-    id uuid NOT NULL CONSTRAINT dashboard_pkey PRIMARY KEY,
-    created_time bigint NOT NULL,
-    configuration varchar,
+                                        id              uuid NOT NULL CONSTRAINT customer_pkey PRIMARY KEY,
+                                        created_time    bigint NOT NULL,
+                                        additional_info varchar,
+                                        address         varchar,
+                                        address2        varchar,
+                                        city            varchar(255),
+                                        country         varchar(255),
+                                        email           varchar(255),
+                                        phone           varchar(255),
+                                        search_text     varchar(255),
+                                        state           varchar(255),
+                                        tenant_id       uuid,
+                                        title           varchar(255),
+                                        zip             varchar(255),
+                                        external_id     uuid
+);
+
+CREATE TABLE IF NOT EXISTS dashboard
+(
+    id                 uuid   NOT NULL
+        CONSTRAINT dashboard_pkey PRIMARY KEY,
+    created_time       bigint NOT NULL,
+    configuration      varchar,
     assigned_customers varchar(1000000),
-    search_text varchar(255),
-    tenant_id uuid,
-    title varchar(255),
-    mobile_hide boolean DEFAULT false,
-    mobile_order int,
-    image varchar(1000000)
+    search_text        varchar(255),
+    tenant_id          uuid,
+    title              varchar(255),
+    mobile_hide        boolean DEFAULT false,
+    mobile_order       int,
+    image              varchar(1000000),
+    external_id        uuid
 );
 
 CREATE TABLE IF NOT EXISTS rule_chain (
-    id uuid NOT NULL CONSTRAINT rule_chain_pkey PRIMARY KEY,
-    created_time bigint NOT NULL,
-    additional_info varchar,
-    configuration varchar(10000000),
-    name varchar(255),
-    type varchar(255),
-    first_rule_node_id uuid,
-    root boolean,
-    debug_mode boolean,
-    search_text varchar(255),
-    tenant_id uuid
+                                          id                 uuid   NOT NULL
+                                              CONSTRAINT rule_chain_pkey PRIMARY KEY,
+                                          created_time       bigint NOT NULL,
+                                          additional_info    varchar,
+                                          configuration      varchar(10000000),
+                                          name               varchar(255),
+                                          type               varchar(255),
+                                          first_rule_node_id uuid,
+                                          root               boolean,
+                                          debug_mode         boolean,
+                                          search_text        varchar(255),
+                                          tenant_id          uuid,
+                                          external_id        uuid
 );
 
 CREATE TABLE IF NOT EXISTS rule_node (
@@ -216,30 +224,31 @@ CREATE TABLE IF NOT EXISTS ota_package (
 );
 
 CREATE TABLE IF NOT EXISTS device_profile (
-    id uuid NOT NULL CONSTRAINT device_profile_pkey PRIMARY KEY,
-    created_time bigint NOT NULL,
-    name varchar(255),
-    type varchar(255),
-    image varchar(1000000),
-    transport_type varchar(255),
-    provision_type varchar(255),
-    profile_data jsonb,
-    description varchar,
-    search_text varchar(255),
-    is_default boolean,
-    tenant_id uuid,
-    firmware_id uuid,
-    software_id uuid,
-    default_rule_chain_id uuid,
-    default_dashboard_id uuid,
-    default_queue_name varchar(255),
-    provision_device_key varchar,
-    CONSTRAINT device_profile_name_unq_key UNIQUE (tenant_id, name),
-    CONSTRAINT device_provision_key_unq_key UNIQUE (provision_device_key),
-    CONSTRAINT fk_default_rule_chain_device_profile FOREIGN KEY (default_rule_chain_id) REFERENCES rule_chain(id),
-    CONSTRAINT fk_default_dashboard_device_profile FOREIGN KEY (default_dashboard_id) REFERENCES dashboard(id),
-    CONSTRAINT fk_firmware_device_profile FOREIGN KEY (firmware_id) REFERENCES ota_package(id),
-    CONSTRAINT fk_software_device_profile FOREIGN KEY (software_id) REFERENCES ota_package(id)
+                                              id                    uuid NOT NULL CONSTRAINT device_profile_pkey PRIMARY KEY,
+                                              created_time          bigint NOT NULL,
+                                              name                  varchar(255),
+                                              type                  varchar(255),
+                                              image                 varchar(1000000),
+                                              transport_type        varchar(255),
+                                              provision_type        varchar(255),
+                                              profile_data          jsonb,
+                                              description           varchar,
+                                              search_text           varchar(255),
+                                              is_default            boolean,
+                                              tenant_id             uuid,
+                                              firmware_id           uuid,
+                                              software_id           uuid,
+                                              default_rule_chain_id uuid,
+                                              default_dashboard_id  uuid,
+                                              default_queue_name    varchar(255),
+                                              provision_device_key  varchar,
+                                              external_id           uuid,
+                                              CONSTRAINT device_profile_name_unq_key UNIQUE (tenant_id, name),
+                                              CONSTRAINT device_provision_key_unq_key UNIQUE (provision_device_key),
+                                              CONSTRAINT fk_default_rule_chain_device_profile FOREIGN KEY (default_rule_chain_id) REFERENCES rule_chain (id),
+                                              CONSTRAINT fk_default_dashboard_device_profile FOREIGN KEY (default_dashboard_id) REFERENCES dashboard (id),
+                                              CONSTRAINT fk_firmware_device_profile FOREIGN KEY (firmware_id) REFERENCES ota_package (id),
+                                              CONSTRAINT fk_software_device_profile FOREIGN KEY (software_id) REFERENCES ota_package (id)
 );
 
 ALTER TABLE ota_package
@@ -257,23 +266,24 @@ ALTER TABLE ota_package
 -- );
 
 CREATE TABLE IF NOT EXISTS device (
-    id uuid NOT NULL CONSTRAINT device_pkey PRIMARY KEY,
-    created_time bigint NOT NULL,
-    additional_info varchar,
-    customer_id uuid,
-    device_profile_id uuid NOT NULL,
-    device_data jsonb,
-    type varchar(255),
-    name varchar(255),
-    label varchar(255),
-    search_text varchar(255),
-    tenant_id uuid,
-    firmware_id uuid,
-    software_id uuid,
-    CONSTRAINT device_name_unq_key UNIQUE (tenant_id, name),
-    CONSTRAINT fk_device_profile FOREIGN KEY (device_profile_id) REFERENCES device_profile(id),
-    CONSTRAINT fk_firmware_device FOREIGN KEY (firmware_id) REFERENCES ota_package(id),
-    CONSTRAINT fk_software_device FOREIGN KEY (software_id) REFERENCES ota_package(id)
+                                      id                uuid NOT NULL CONSTRAINT device_pkey PRIMARY KEY,
+                                      created_time      bigint NOT NULL,
+                                      additional_info   varchar,
+                                      customer_id       uuid,
+                                      device_profile_id uuid NOT NULL,
+                                      device_data       jsonb,
+                                      type              varchar(255),
+                                      name              varchar(255),
+                                      label             varchar(255),
+                                      search_text       varchar(255),
+                                      tenant_id         uuid,
+                                      firmware_id       uuid,
+                                      software_id       uuid,
+                                      external_id       uuid,
+                                      CONSTRAINT device_name_unq_key UNIQUE (tenant_id, name),
+                                      CONSTRAINT fk_device_profile FOREIGN KEY (device_profile_id) REFERENCES device_profile (id),
+                                      CONSTRAINT fk_firmware_device FOREIGN KEY (firmware_id) REFERENCES ota_package (id),
+                                      CONSTRAINT fk_software_device FOREIGN KEY (software_id) REFERENCES ota_package (id)
 );
 
 CREATE TABLE IF NOT EXISTS device_credentials (