Merge pull request #8090 from imbeacon/feature-alarm-assigning-with-revert

Feature alarm assigning with revert

application/src/main/data/upgrade/3.4.4/schema_update.sql

@@ -14,6 +14,14 @@
 -- limitations under the License.
 --
 
+
+-- ALARM ASSIGN TO USER START
+
+ALTER TABLE alarm ADD COLUMN IF NOT EXISTS assign_ts BIGINT;
+ALTER TABLE alarm ADD COLUMN IF NOT EXISTS assignee_id UUID;
+
+-- ALARM ASSIGN TO USER END
+
 CREATE TABLE IF NOT EXISTS alarm_comment (
     id uuid NOT NULL,
     created_time bigint NOT NULL,

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

@@ -30,6 +30,7 @@ import org.springframework.web.bind.annotation.ResponseBody;
 import org.springframework.web.bind.annotation.ResponseStatus;
 import org.springframework.web.bind.annotation.RestController;
 import org.thingsboard.server.common.data.StringUtils;
+import org.thingsboard.server.common.data.User;
 import org.thingsboard.server.common.data.alarm.Alarm;
 import org.thingsboard.server.common.data.alarm.AlarmInfo;
 import org.thingsboard.server.common.data.alarm.AlarmQuery;
@@ -41,16 +42,23 @@ import org.thingsboard.server.common.data.exception.ThingsboardException;
 import org.thingsboard.server.common.data.id.AlarmId;
 import org.thingsboard.server.common.data.id.EntityId;
 import org.thingsboard.server.common.data.id.EntityIdFactory;
+import org.thingsboard.server.common.data.id.UserId;
 import org.thingsboard.server.common.data.page.PageData;
 import org.thingsboard.server.common.data.page.TimePageLink;
 import org.thingsboard.server.queue.util.TbCoreComponent;
 import org.thingsboard.server.service.entitiy.alarm.TbAlarmService;
+import org.thingsboard.server.service.security.model.SecurityUser;
+import org.thingsboard.server.service.security.model.UserPrincipal;
 import org.thingsboard.server.service.security.permission.Operation;
 import org.thingsboard.server.service.security.permission.Resource;
 
+import java.util.UUID;
+
 import static org.thingsboard.server.controller.ControllerConstants.ALARM_ID_PARAM_DESCRIPTION;
 import static org.thingsboard.server.controller.ControllerConstants.ALARM_INFO_DESCRIPTION;
 import static org.thingsboard.server.controller.ControllerConstants.ALARM_SORT_PROPERTY_ALLOWABLE_VALUES;
+import static org.thingsboard.server.controller.ControllerConstants.ASSIGNEE_ID;
+import static org.thingsboard.server.controller.ControllerConstants.ASSIGN_ID_PARAM_DESCRIPTION;
 import static org.thingsboard.server.controller.ControllerConstants.ENTITY_ID;
 import static org.thingsboard.server.controller.ControllerConstants.ENTITY_ID_PARAM_DESCRIPTION;
 import static org.thingsboard.server.controller.ControllerConstants.ENTITY_TYPE;
@@ -79,6 +87,7 @@ public class AlarmController extends BaseController {
     private static final String ALARM_QUERY_SEARCH_STATUS_ALLOWABLE_VALUES = "ANY, ACTIVE, CLEARED, ACK, UNACK";
     private static final String ALARM_QUERY_STATUS_DESCRIPTION = "A string value representing one of the AlarmStatus enumeration value";
     private static final String ALARM_QUERY_STATUS_ALLOWABLE_VALUES = "ACTIVE_UNACK, ACTIVE_ACK, CLEARED_UNACK, CLEARED_ACK";
+    private static final String ALARM_QUERY_ASSIGNEE_DESCRIPTION = "A string value representing the assignee user id. For example, '784f394c-42b6-435a-983c-b7beff2784f9'";
     private static final String ALARM_QUERY_TEXT_SEARCH_DESCRIPTION = "The case insensitive 'substring' filter based on of next alarm fields: type, severity or status";
     private static final String ALARM_QUERY_START_TIME_DESCRIPTION = "The start timestamp in milliseconds of the search time range over the Alarm class field: 'createdTime'.";
     private static final String ALARM_QUERY_END_TIME_DESCRIPTION = "The end timestamp in milliseconds of the search time range over the Alarm class field: 'createdTime'.";
@@ -179,6 +188,44 @@ public class AlarmController extends BaseController {
         tbAlarmService.clear(alarm, getCurrentUser()).get();
     }
 
+    @ApiOperation(value = "Assign/Reassign Alarm (assignAlarm)",
+            notes = "Assign the Alarm. " +
+                    "Once assigned, the 'assign_ts' field will be set to current timestamp and special rule chain event 'ALARM_ASSIGNED' " +
+                    "(or ALARM_REASSIGNED in case of assigning already assigned alarm) will be generated. " +
+                    "Referencing non-existing Alarm Id will cause an error." + TENANT_OR_CUSTOMER_AUTHORITY_PARAGRAPH, produces = MediaType.APPLICATION_JSON_VALUE)
+    @PreAuthorize("hasAnyAuthority('TENANT_ADMIN', 'CUSTOMER_USER')")
+    @RequestMapping(value = "/alarm/{alarmId}/assign/{assigneeId}", method = RequestMethod.POST)
+    @ResponseStatus(value = HttpStatus.OK)
+    public Alarm assignAlarm(@ApiParam(value = ALARM_ID_PARAM_DESCRIPTION)
+                            @PathVariable(ALARM_ID) String strAlarmId,
+                            @ApiParam(value = ASSIGN_ID_PARAM_DESCRIPTION)
+                            @PathVariable(ASSIGNEE_ID) String strAssigneeId
+    ) throws Exception {
+        checkParameter(ALARM_ID, strAlarmId);
+        checkParameter(ASSIGNEE_ID, strAssigneeId);
+        AlarmId alarmId = new AlarmId(toUUID(strAlarmId));
+        Alarm alarm = checkAlarmId(alarmId, Operation.WRITE);
+        UserId assigneeId = new UserId(UUID.fromString(strAssigneeId));
+        checkUserId(assigneeId, Operation.READ);
+        return tbAlarmService.assign(alarm, getCurrentUser(), assigneeId);
+    }
+
+    @ApiOperation(value = "Unassign Alarm (unassignAlarm)",
+            notes = "Unassign the Alarm. " +
+                    "Once unassigned, the 'assign_ts' field will be set to current timestamp and special rule chain event 'ALARM_UNASSIGNED' will be generated. " +
+                    "Referencing non-existing Alarm Id will cause an error." + TENANT_OR_CUSTOMER_AUTHORITY_PARAGRAPH, produces = MediaType.APPLICATION_JSON_VALUE)
+    @PreAuthorize("hasAnyAuthority('TENANT_ADMIN', 'CUSTOMER_USER')")
+    @RequestMapping(value = "/alarm/{alarmId}/assign", method = RequestMethod.DELETE)
+    @ResponseStatus(value = HttpStatus.OK)
+    public Alarm assignAlarm(@ApiParam(value = ALARM_ID_PARAM_DESCRIPTION)
+                            @PathVariable(ALARM_ID) String strAlarmId
+    ) throws Exception {
+        checkParameter(ALARM_ID, strAlarmId);
+        AlarmId alarmId = new AlarmId(toUUID(strAlarmId));
+        Alarm alarm = checkAlarmId(alarmId, Operation.WRITE);
+        return tbAlarmService.unassign(alarm, getCurrentUser());
+    }
+
     @ApiOperation(value = "Get Alarms (getAlarms)",
             notes = "Returns a page of alarms for the selected entity. Specifying both parameters 'searchStatus' and 'status' at the same time will cause an error. " +
                     PAGE_DATA_PARAMETERS + TENANT_OR_CUSTOMER_AUTHORITY_PARAGRAPH, produces = MediaType.APPLICATION_JSON_VALUE)
@@ -194,6 +241,8 @@ public class AlarmController extends BaseController {
             @RequestParam(required = false) String searchStatus,
             @ApiParam(value = ALARM_QUERY_STATUS_DESCRIPTION, allowableValues = ALARM_QUERY_STATUS_ALLOWABLE_VALUES)
             @RequestParam(required = false) String status,
+            @ApiParam(value = ALARM_QUERY_ASSIGNEE_DESCRIPTION)
+            @RequestParam(required = false) String assigneeId,
             @ApiParam(value = PAGE_SIZE_DESCRIPTION, required = true)
             @RequestParam int pageSize,
             @ApiParam(value = PAGE_NUMBER_DESCRIPTION, required = true)
@@ -221,10 +270,14 @@ public class AlarmController extends BaseController {
                     "and 'status' can't be specified at the same time!", ThingsboardErrorCode.BAD_REQUEST_PARAMS);
         }
         checkEntityId(entityId, Operation.READ);
+        UserId assigneeUserId = null;
+        if (assigneeId != null) {
+            assigneeUserId = new UserId(UUID.fromString(assigneeId));
+        }
         TimePageLink pageLink = createTimePageLink(pageSize, page, textSearch, sortProperty, sortOrder, startTime, endTime);
 
         try {
-            return checkNotNull(alarmService.findAlarms(getCurrentUser().getTenantId(), new AlarmQuery(entityId, pageLink, alarmSearchStatus, alarmStatus, fetchOriginator)).get());
+            return checkNotNull(alarmService.findAlarms(getCurrentUser().getTenantId(), new AlarmQuery(entityId, pageLink, alarmSearchStatus, alarmStatus, assigneeUserId, fetchOriginator)).get());
         } catch (Exception e) {
             throw handleException(e);
         }
@@ -244,6 +297,8 @@ public class AlarmController extends BaseController {
             @RequestParam(required = false) String searchStatus,
             @ApiParam(value = ALARM_QUERY_STATUS_DESCRIPTION, allowableValues = ALARM_QUERY_STATUS_ALLOWABLE_VALUES)
             @RequestParam(required = false) String status,
+            @ApiParam(value = ALARM_QUERY_ASSIGNEE_DESCRIPTION)
+            @RequestParam(required = false) String assigneeId,
             @ApiParam(value = PAGE_SIZE_DESCRIPTION, required = true)
             @RequestParam int pageSize,
             @ApiParam(value = PAGE_NUMBER_DESCRIPTION, required = true)
@@ -267,13 +322,17 @@ public class AlarmController extends BaseController {
             throw new ThingsboardException("Invalid alarms search query: Both parameters 'searchStatus' " +
                     "and 'status' can't be specified at the same time!", ThingsboardErrorCode.BAD_REQUEST_PARAMS);
         }
+        UserId assigneeUserId = null;
+        if (assigneeId != null) {
+            assigneeUserId = new UserId(UUID.fromString(assigneeId));
+        }
         TimePageLink pageLink = createTimePageLink(pageSize, page, textSearch, sortProperty, sortOrder, startTime, endTime);
 
         try {
             if (getCurrentUser().isCustomerUser()) {
-                return checkNotNull(alarmService.findCustomerAlarms(getCurrentUser().getTenantId(), getCurrentUser().getCustomerId(), new AlarmQuery(null, pageLink, alarmSearchStatus, alarmStatus, fetchOriginator)).get());
+                return checkNotNull(alarmService.findCustomerAlarms(getCurrentUser().getTenantId(), getCurrentUser().getCustomerId(), new AlarmQuery(null, pageLink, alarmSearchStatus, alarmStatus, assigneeUserId, fetchOriginator)).get());
             } else {
-                return checkNotNull(alarmService.findAlarms(getCurrentUser().getTenantId(), new AlarmQuery(null, pageLink, alarmSearchStatus, alarmStatus, fetchOriginator)).get());
+                return checkNotNull(alarmService.findAlarms(getCurrentUser().getTenantId(), new AlarmQuery(null, pageLink, alarmSearchStatus, alarmStatus, assigneeUserId, fetchOriginator)).get());
             }
         } catch (Exception e) {
             throw handleException(e);
@@ -295,7 +354,9 @@ public class AlarmController extends BaseController {
             @ApiParam(value = ALARM_QUERY_SEARCH_STATUS_DESCRIPTION, allowableValues = ALARM_QUERY_SEARCH_STATUS_ALLOWABLE_VALUES)
             @RequestParam(required = false) String searchStatus,
             @ApiParam(value = ALARM_QUERY_STATUS_DESCRIPTION, allowableValues = ALARM_QUERY_STATUS_ALLOWABLE_VALUES)
-            @RequestParam(required = false) String status
+            @RequestParam(required = false) String status,
+            @ApiParam(value = ALARM_QUERY_ASSIGNEE_DESCRIPTION)
+            @RequestParam(required = false) String assigneeId
     ) throws ThingsboardException {
         checkParameter("EntityId", strEntityId);
         checkParameter("EntityType", strEntityType);
@@ -308,7 +369,7 @@ public class AlarmController extends BaseController {
         }
         checkEntityId(entityId, Operation.READ);
         try {
-            return alarmService.findHighestAlarmSeverity(getCurrentUser().getTenantId(), entityId, alarmSearchStatus, alarmStatus);
+            return alarmService.findHighestAlarmSeverity(getCurrentUser().getTenantId(), entityId, alarmSearchStatus, alarmStatus, assigneeId);
         } catch (Exception e) {
             throw handleException(e);
         }

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

@@ -609,7 +609,6 @@ public abstract class BaseController {
             throw handleException(e, false);
         }
     }
-
     Device checkDeviceId(DeviceId deviceId, Operation operation) throws ThingsboardException {
         try {
             validateId(deviceId, "Incorrect deviceId " + deviceId);

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

@@ -27,6 +27,7 @@ public class ControllerConstants {
     protected static final String EDGE_ID = "edgeId";
     protected static final String RPC_ID = "rpcId";
     protected static final String ENTITY_ID = "entityId";
+    protected static final String ASSIGNEE_ID = "assigneeId";
     protected static final String PAGE_DATA_PARAMETERS = "You can specify parameters to filter the results. " +
             "The result is wrapped with PageData object that allows you to iterate over result set using pagination. " +
             "See the 'Model' tab of the Response Class for more details. ";
@@ -44,6 +45,7 @@ public class ControllerConstants {
     protected static final String USER_ID_PARAM_DESCRIPTION = "A string value representing the user id. For example, '784f394c-42b6-435a-983c-b7beff2784f9'";
     protected static final String ASSET_ID_PARAM_DESCRIPTION = "A string value representing the asset id. For example, '784f394c-42b6-435a-983c-b7beff2784f9'";
     protected static final String ALARM_ID_PARAM_DESCRIPTION = "A string value representing the alarm id. For example, '784f394c-42b6-435a-983c-b7beff2784f9'";
+    protected static final String ASSIGN_ID_PARAM_DESCRIPTION = "A string value representing the user id. For example, '784f394c-42b6-435a-983c-b7beff2784f9'";
 
     protected static final String ALARM_COMMENT_ID_PARAM_DESCRIPTION = "A string value representing the alarm comment id. For example, '784f394c-42b6-435a-983c-b7beff2784f9'";
     protected static final String ENTITY_ID_PARAM_DESCRIPTION = "A string value representing the entity id. For example, '784f394c-42b6-435a-983c-b7beff2784f9'";

application/src/main/java/org/thingsboard/server/service/action/EntityActionService.java

@@ -86,6 +86,12 @@ public class EntityActionService {
             case ALARM_CLEAR:
                 msgType = DataConstants.ALARM_CLEAR;
                 break;
+            case ALARM_ASSIGN:
+                msgType = DataConstants.ALARM_ASSIGN;
+                break;
+            case ALARM_UNASSIGN:
+                msgType = DataConstants.ALARM_UNASSIGN;
+                break;
             case ALARM_DELETE:
                 msgType = DataConstants.ALARM_DELETE;
                 break;

application/src/main/java/org/thingsboard/server/service/entitiy/AbstractTbEntityService.java

@@ -76,7 +76,7 @@ public abstract class AbstractTbEntityService {
 
     protected ListenableFuture<Void> removeAlarmsByEntityId(TenantId tenantId, EntityId entityId) {
         ListenableFuture<PageData<AlarmInfo>> alarmsFuture =
-                alarmService.findAlarms(tenantId, new AlarmQuery(entityId, new TimePageLink(Integer.MAX_VALUE), null, null, false));
+                alarmService.findAlarms(tenantId, new AlarmQuery(entityId, new TimePageLink(Integer.MAX_VALUE), null, null, null, false));
 
         ListenableFuture<List<AlarmId>> alarmIdsFuture = Futures.transform(alarmsFuture, page ->
                 page.getData().stream().map(AlarmInfo::getId).collect(Collectors.toList()), dbExecutor);

application/src/main/java/org/thingsboard/server/service/entitiy/DefaultTbNotificationEntityService.java

@@ -308,6 +308,10 @@ public class DefaultTbNotificationEntityService implements TbNotificationEntityS
                 return EdgeEventActionType.ALARM_ACK;
             case ALARM_CLEAR:
                 return EdgeEventActionType.ALARM_CLEAR;
+            case ALARM_ASSIGN:
+                return EdgeEventActionType.ALARM_ASSIGN;
+            case ALARM_UNASSIGN:
+                return EdgeEventActionType.ALARM_UNASSIGN;
             case DELETED:
                 return EdgeEventActionType.DELETED;
             case RELATION_ADD_OR_UPDATE:

application/src/main/java/org/thingsboard/server/service/entitiy/alarm/DefaultTbAlarmService.java

@@ -31,6 +31,8 @@ import org.thingsboard.server.common.data.audit.ActionType;
 import org.thingsboard.server.common.data.exception.ThingsboardException;
 import org.thingsboard.server.common.data.id.EdgeId;
 import org.thingsboard.server.common.data.id.TenantId;
+import org.thingsboard.server.common.data.id.UserId;
+import org.thingsboard.server.dao.alarm.AlarmOperationResult;
 import org.thingsboard.server.service.entitiy.AbstractTbEntityService;
 
 import java.util.List;
@@ -93,6 +95,22 @@ public class DefaultTbAlarmService extends AbstractTbEntityService implements Tb
         }, MoreExecutors.directExecutor());
     }
 
+    @Override
+    public Alarm assign(Alarm alarm, User user, UserId assigneeId) {
+        long assignTs = System.currentTimeMillis();
+        Alarm assignedAlarm = alarmSubscriptionService.assignAlarm(alarm.getTenantId(), alarm.getId(), assigneeId, assignTs);
+        notificationEntityService.notifyCreateOrUpdateAlarm(assignedAlarm, ActionType.ALARM_ASSIGN, user);
+        return assignedAlarm;
+    }
+
+    @Override
+    public Alarm unassign(Alarm alarm, User user) {
+        long assignTs = System.currentTimeMillis();
+        Alarm unassignedAlarm = alarmSubscriptionService.unassignAlarm(alarm.getTenantId(), alarm.getId(), assignTs);
+        notificationEntityService.notifyCreateOrUpdateAlarm(unassignedAlarm, ActionType.ALARM_UNASSIGN, user);
+        return unassignedAlarm;
+    }
+
     @Override
     public Boolean delete(Alarm alarm, User user) {
         TenantId tenantId = alarm.getTenantId();

application/src/main/java/org/thingsboard/server/service/entitiy/alarm/TbAlarmService.java

@@ -19,6 +19,7 @@ import com.google.common.util.concurrent.ListenableFuture;
 import org.thingsboard.server.common.data.User;
 import org.thingsboard.server.common.data.alarm.Alarm;
 import org.thingsboard.server.common.data.exception.ThingsboardException;
+import org.thingsboard.server.common.data.id.UserId;
 
 public interface TbAlarmService {
 
@@ -28,5 +29,9 @@ public interface TbAlarmService {
 
     ListenableFuture<Void> clear(Alarm alarm, User user);
 
+    Alarm assign(Alarm alarm, User user, UserId assigneeId);
+
+    Alarm unassign(Alarm alarm, User user);
+
     Boolean delete(Alarm alarm, User user);
 }

application/src/main/java/org/thingsboard/server/service/install/update/DefaultDataUpdateService.java

@@ -556,7 +556,7 @@ public class DefaultDataUpdateService implements DataUpdateService {
             };
 
     private void updateTenantAlarmsCustomer(TenantId tenantId, String name, AtomicLong processed) {
-        AlarmQuery alarmQuery = new AlarmQuery(null, new TimePageLink(1000), null, null, false);
+        AlarmQuery alarmQuery = new AlarmQuery(null, new TimePageLink(1000), null, null, null, false);
         PageData<AlarmInfo> alarms = alarmDao.findAlarms(tenantId, alarmQuery);
         boolean hasNext = true;
         while (hasNext) {

application/src/main/java/org/thingsboard/server/service/queue/DefaultTbCoreConsumerService.java

@@ -26,6 +26,7 @@ import org.thingsboard.common.util.JacksonUtil;
 import org.thingsboard.common.util.ThingsBoardThreadFactory;
 import org.thingsboard.server.actors.ActorSystemContext;
 import org.thingsboard.server.common.data.alarm.Alarm;
+import org.thingsboard.server.common.data.alarm.AlarmInfo;
 import org.thingsboard.server.common.data.id.DeviceId;
 import org.thingsboard.server.common.data.id.TenantId;
 import org.thingsboard.server.common.data.rpc.RpcError;
@@ -502,13 +503,13 @@ public class DefaultTbCoreConsumerService extends AbstractConsumerService<ToCore
             subscriptionManagerService.onAlarmUpdate(
                     TenantId.fromUUID(new UUID(proto.getTenantIdMSB(), proto.getTenantIdLSB())),
                     TbSubscriptionUtils.toEntityId(proto.getEntityType(), proto.getEntityIdMSB(), proto.getEntityIdLSB()),
-                    JacksonUtil.fromString(proto.getAlarm(), Alarm.class), callback);
+                    JacksonUtil.fromString(proto.getAlarm(), AlarmInfo.class),callback);
         } else if (msg.hasAlarmDelete()) {
             TbAlarmDeleteProto proto = msg.getAlarmDelete();
             subscriptionManagerService.onAlarmDeleted(
                     TenantId.fromUUID(new UUID(proto.getTenantIdMSB(), proto.getTenantIdLSB())),
                     TbSubscriptionUtils.toEntityId(proto.getEntityType(), proto.getEntityIdMSB(), proto.getEntityIdLSB()),
-                    JacksonUtil.fromString(proto.getAlarm(), Alarm.class), callback);
+                    JacksonUtil.fromString(proto.getAlarm(), AlarmInfo.class), callback);
         } else {
             throwNotHandled(msg, callback);
         }

application/src/main/java/org/thingsboard/server/service/subscription/DefaultSubscriptionManagerService.java

@@ -26,6 +26,7 @@ import org.thingsboard.server.cluster.TbClusterService;
 import org.thingsboard.server.common.data.DataConstants;
 import org.thingsboard.server.common.data.EntityType;
 import org.thingsboard.server.common.data.alarm.Alarm;
+import org.thingsboard.server.common.data.alarm.AlarmInfo;
 import org.thingsboard.server.common.data.id.DeviceId;
 import org.thingsboard.server.common.data.id.EntityId;
 import org.thingsboard.server.common.data.id.TenantId;
@@ -292,7 +293,7 @@ public class DefaultSubscriptionManagerService extends TbApplicationEventListene
     }
 
     @Override
-    public void onAlarmUpdate(TenantId tenantId, EntityId entityId, Alarm alarm, TbCallback callback) {
+    public void onAlarmUpdate(TenantId tenantId, EntityId entityId, AlarmInfo alarmInfo, TbCallback callback) {
         onLocalAlarmSubUpdate(entityId,
                 s -> {
                     if (TbSubscriptionType.ALARMS.equals(s.getType())) {
@@ -301,15 +302,15 @@ public class DefaultSubscriptionManagerService extends TbApplicationEventListene
                         return null;
                     }
                 },
-                s -> alarm.getCreatedTime() >= s.getTs(),
+                s -> alarmInfo.getCreatedTime() >= s.getTs() || alarmInfo.getAssignTs() >= s.getTs(),
-                s -> alarm,
+                s -> alarmInfo,
                 false
         );
         callback.onSuccess();
     }
 
     @Override
-    public void onAlarmDeleted(TenantId tenantId, EntityId entityId, Alarm alarm, TbCallback callback) {
+    public void onAlarmDeleted(TenantId tenantId, EntityId entityId, AlarmInfo alarmInfo, TbCallback callback) {
         onLocalAlarmSubUpdate(entityId,
                 s -> {
                     if (TbSubscriptionType.ALARMS.equals(s.getType())) {
@@ -318,8 +319,8 @@ public class DefaultSubscriptionManagerService extends TbApplicationEventListene
                         return null;
                     }
                 },
-                s -> alarm.getCreatedTime() >= s.getTs(),
+                s -> alarmInfo.getCreatedTime() >= s.getTs(),
-                s -> alarm,
+                s -> alarmInfo,
                 true
         );
         callback.onSuccess();
@@ -414,18 +415,19 @@ public class DefaultSubscriptionManagerService extends TbApplicationEventListene
     private void onLocalAlarmSubUpdate(EntityId entityId,
                                        Function<TbSubscription, TbAlarmsSubscription> castFunction,
                                        Predicate<TbAlarmsSubscription> filterFunction,
-                                       Function<TbAlarmsSubscription, Alarm> processFunction, boolean deleted) {
+                                       Function<TbAlarmsSubscription, AlarmInfo> processFunction,
+                                       boolean deleted) {
         Set<TbSubscription> entitySubscriptions = subscriptionsByEntityId.get(entityId);
         if (entitySubscriptions != null) {
             entitySubscriptions.stream().map(castFunction).filter(Objects::nonNull).filter(filterFunction).forEach(s -> {
-                Alarm alarm = processFunction.apply(s);
+                AlarmInfo alarmInfo = processFunction.apply(s);
-                if (alarm != null) {
+                if (alarmInfo != null) {
                     if (serviceId.equals(s.getServiceId())) {
-                        AlarmSubscriptionUpdate update = new AlarmSubscriptionUpdate(s.getSubscriptionId(), alarm, deleted);
+                        AlarmSubscriptionUpdate update = new AlarmSubscriptionUpdate(s.getSubscriptionId(), alarmInfo, deleted);
                         localSubscriptionService.onSubscriptionUpdate(s.getSessionId(), update, TbCallback.EMPTY);
                     } else {
                         TopicPartitionInfo tpi = notificationsTopicService.getNotificationsTopic(ServiceType.TB_CORE, s.getServiceId());
-                        toCoreNotificationsProducer.send(tpi, toProto(s, alarm, deleted), null);
+                        toCoreNotificationsProducer.send(tpi, toProto(s, alarmInfo, deleted), null);
                     }
                 }
             });
@@ -562,12 +564,12 @@ public class DefaultSubscriptionManagerService extends TbApplicationEventListene
         return new TbProtoQueueMsg<>(subscription.getEntityId().getId(), toCoreMsg);
     }
 
-    private TbProtoQueueMsg<ToCoreNotificationMsg> toProto(TbSubscription subscription, Alarm alarm, boolean deleted) {
+    private TbProtoQueueMsg<ToCoreNotificationMsg> toProto(TbSubscription subscription, AlarmInfo alarmInfo, boolean deleted) {
         TbAlarmSubscriptionUpdateProto.Builder builder = TbAlarmSubscriptionUpdateProto.newBuilder();
 
         builder.setSessionId(subscription.getSessionId());
         builder.setSubscriptionId(subscription.getSubscriptionId());
-        builder.setAlarm(JacksonUtil.toString(alarm));
+        builder.setAlarm(JacksonUtil.toString(alarmInfo));
         builder.setDeleted(deleted);
 
         ToCoreNotificationMsg toCoreMsg = ToCoreNotificationMsg.newBuilder().setToLocalSubscriptionServiceMsg(

application/src/main/java/org/thingsboard/server/service/subscription/SubscriptionManagerService.java

@@ -16,7 +16,7 @@
 package org.thingsboard.server.service.subscription;
 
 import org.springframework.context.ApplicationListener;
-import org.thingsboard.server.common.data.alarm.Alarm;
+import org.thingsboard.server.common.data.alarm.AlarmInfo;
 import org.thingsboard.server.common.data.id.EntityId;
 import org.thingsboard.server.common.data.id.TenantId;
 import org.thingsboard.server.common.data.kv.AttributeKvEntry;
@@ -42,9 +42,9 @@ public interface SubscriptionManagerService extends ApplicationListener<Partitio
 
     void onTimeSeriesDelete(TenantId tenantId, EntityId entityId, List<String> keys, TbCallback callback);
 
-    void onAlarmUpdate(TenantId tenantId, EntityId entityId, Alarm alarm, TbCallback callback);
+    void onAlarmUpdate(TenantId tenantId, EntityId entityId, AlarmInfo alarmInfo, TbCallback callback);
 
-    void onAlarmDeleted(TenantId tenantId, EntityId entityId, Alarm alarm, TbCallback callback);
+    void onAlarmDeleted(TenantId tenantId, EntityId entityId, AlarmInfo alarmInfo, TbCallback callback);
 
 
 }

application/src/main/java/org/thingsboard/server/service/subscription/TbAlarmDataSubCtx.java

@@ -20,6 +20,7 @@ import lombok.Setter;
 import lombok.ToString;
 import lombok.extern.slf4j.Slf4j;
 import org.thingsboard.server.common.data.alarm.Alarm;
+import org.thingsboard.server.common.data.alarm.AlarmInfo;
 import org.thingsboard.server.common.data.alarm.AlarmSearchStatus;
 import org.thingsboard.server.common.data.id.AlarmId;
 import org.thingsboard.server.common.data.id.EntityId;
@@ -63,10 +64,8 @@ public class TbAlarmDataSubCtx extends TbAbstractDataSubCtx<AlarmDataQuery> {
 
     private final AlarmService alarmService;
     @Getter
-    @Setter
     private final LinkedHashMap<EntityId, EntityData> entitiesMap;
     @Getter
-    @Setter
     private final HashMap<AlarmId, AlarmData> alarmsMap;
 
     private final int maxEntitiesPerAlarmSubscription;
@@ -212,8 +211,8 @@ public class TbAlarmDataSubCtx extends TbAbstractDataSubCtx<AlarmDataQuery> {
     }
 
     private void sendWsMsg(String sessionId, AlarmSubscriptionUpdate subscriptionUpdate) {
-        Alarm alarm = subscriptionUpdate.getAlarm();
+        AlarmInfo alarmInfo = subscriptionUpdate.getAlarm();
-        AlarmId alarmId = alarm.getId();
+        AlarmId alarmId = alarmInfo.getId();
         if (subscriptionUpdate.isAlarmDeleted()) {
             Alarm deleted = alarmsMap.remove(alarmId);
             if (deleted != null) {
@@ -222,10 +221,10 @@ public class TbAlarmDataSubCtx extends TbAbstractDataSubCtx<AlarmDataQuery> {
         } else {
             AlarmData current = alarmsMap.get(alarmId);
             boolean onCurrentPage = current != null;
-            boolean matchesFilter = filter(alarm);
+            boolean matchesFilter = filter(alarmInfo);
             if (onCurrentPage) {
                 if (matchesFilter) {
-                    AlarmData updated = new AlarmData(alarm, current.getOriginatorName(), current.getEntityId());
+                    AlarmData updated = new AlarmData(alarmInfo, current.getEntityId());
                     updated.getLatest().putAll(current.getLatest());
                     alarmsMap.put(alarmId, updated);
                     sendWsMsg(new AlarmDataUpdate(cmdId, null, Collections.singletonList(updated), maxEntitiesPerAlarmSubscription, data.getTotalElements()));

application/src/main/java/org/thingsboard/server/service/subscription/TbSubscriptionUtils.java

@@ -17,6 +17,7 @@ package org.thingsboard.server.service.subscription;
 
 import org.thingsboard.common.util.JacksonUtil;
 import org.thingsboard.server.common.data.alarm.Alarm;
+import org.thingsboard.server.common.data.alarm.AlarmInfo;
 import org.thingsboard.server.common.data.id.EntityId;
 import org.thingsboard.server.common.data.id.EntityIdFactory;
 import org.thingsboard.server.common.data.id.TenantId;
@@ -189,8 +190,8 @@ public class TbSubscriptionUtils {
         if (proto.getErrorCode() > 0) {
             return new AlarmSubscriptionUpdate(proto.getSubscriptionId(), SubscriptionErrorCode.forCode(proto.getErrorCode()), proto.getErrorMsg());
         } else {
-            Alarm alarm = JacksonUtil.fromString(proto.getAlarm(), Alarm.class);
+            AlarmInfo alarmInfo = JacksonUtil.fromString(proto.getAlarm(), AlarmInfo.class);
-            return new AlarmSubscriptionUpdate(proto.getSubscriptionId(), alarm);
+            return new AlarmSubscriptionUpdate(proto.getSubscriptionId(), alarmInfo);
         }
     }
 
@@ -316,27 +317,27 @@ public class TbSubscriptionUtils {
         return entry;
     }
 
-    public static ToCoreMsg toAlarmUpdateProto(TenantId tenantId, EntityId entityId, Alarm alarm) {
+    public static ToCoreMsg toAlarmUpdateProto(TenantId tenantId, EntityId entityId, AlarmInfo alarmInfo) {
         TbAlarmUpdateProto.Builder builder = TbAlarmUpdateProto.newBuilder();
         builder.setEntityType(entityId.getEntityType().name());
         builder.setEntityIdMSB(entityId.getId().getMostSignificantBits());
         builder.setEntityIdLSB(entityId.getId().getLeastSignificantBits());
         builder.setTenantIdMSB(tenantId.getId().getMostSignificantBits());
         builder.setTenantIdLSB(tenantId.getId().getLeastSignificantBits());
-        builder.setAlarm(JacksonUtil.toString(alarm));
+        builder.setAlarm(JacksonUtil.toString(alarmInfo));
         SubscriptionMgrMsgProto.Builder msgBuilder = SubscriptionMgrMsgProto.newBuilder();
         msgBuilder.setAlarmUpdate(builder);
         return ToCoreMsg.newBuilder().setToSubscriptionMgrMsg(msgBuilder.build()).build();
     }
 
-    public static ToCoreMsg toAlarmDeletedProto(TenantId tenantId, EntityId entityId, Alarm alarm) {
+    public static ToCoreMsg toAlarmDeletedProto(TenantId tenantId, EntityId entityId, AlarmInfo alarmInfo) {
         TbAlarmDeleteProto.Builder builder = TbAlarmDeleteProto.newBuilder();
         builder.setEntityType(entityId.getEntityType().name());
         builder.setEntityIdMSB(entityId.getId().getMostSignificantBits());
         builder.setEntityIdLSB(entityId.getId().getLeastSignificantBits());
         builder.setTenantIdMSB(tenantId.getId().getMostSignificantBits());
         builder.setTenantIdLSB(tenantId.getId().getLeastSignificantBits());
-        builder.setAlarm(JacksonUtil.toString(alarm));
+        builder.setAlarm(JacksonUtil.toString(alarmInfo));
         SubscriptionMgrMsgProto.Builder msgBuilder = SubscriptionMgrMsgProto.newBuilder();
         msgBuilder.setAlarmDelete(builder);
         return ToCoreMsg.newBuilder().setToSubscriptionMgrMsg(msgBuilder.build()).build();

application/src/main/java/org/thingsboard/server/service/telemetry/DefaultAlarmSubscriptionService.java

@@ -37,6 +37,7 @@ import org.thingsboard.server.common.data.id.AlarmId;
 import org.thingsboard.server.common.data.id.CustomerId;
 import org.thingsboard.server.common.data.id.EntityId;
 import org.thingsboard.server.common.data.id.TenantId;
+import org.thingsboard.server.common.data.id.UserId;
 import org.thingsboard.server.common.data.page.PageData;
 import org.thingsboard.server.common.data.query.AlarmData;
 import org.thingsboard.server.common.data.query.AlarmDataQuery;
@@ -93,16 +94,16 @@ public class DefaultAlarmSubscriptionService extends AbstractSubscriptionService
     }
 
     @Override
-    public Alarm createOrUpdateAlarm(Alarm alarm) {
+    public AlarmInfo createOrUpdateAlarm(Alarm alarm) {
         AlarmOperationResult result = alarmService.createOrUpdateAlarm(alarm, apiUsageStateService.getApiUsageState(alarm.getTenantId()).isAlarmCreationEnabled());
         if (result.isSuccessful()) {
             onAlarmUpdated(result);
             AlarmSeverity oldSeverity = result.getOldSeverity();
-            if (oldSeverity != null && !oldSeverity.equals(result.getAlarm().getSeverity())) {
+            if (oldSeverity != null && !oldSeverity.equals(result.getAlarmInfo().getSeverity())) {
                 AlarmComment alarmComment = AlarmComment.builder()
                         .alarmId(alarm.getId())
                         .type(AlarmCommentType.SYSTEM)
-                        .comment(JacksonUtil.newObjectNode().put("text", String.format("Alarm severity was updated from %s to %s", oldSeverity, result.getAlarm().getSeverity())))
+                        .comment(JacksonUtil.newObjectNode().put("text", String.format("Alarm severity was updated from %s to %s", oldSeverity, result.getAlarmInfo().getSeverity())))
                         .build();
                 alarmCommentService.createOrUpdateAlarmComment(alarm.getTenantId(), alarmComment);
             }
@@ -110,7 +111,7 @@ public class DefaultAlarmSubscriptionService extends AbstractSubscriptionService
         if (result.isCreated()) {
             apiUsageClient.report(alarm.getTenantId(), null, ApiUsageRecordKey.CREATED_ALARMS_COUNT);
         }
-        return result.getAlarm();
+        return result.getAlarmInfo();
     }
 
     @Override
@@ -140,6 +141,28 @@ public class DefaultAlarmSubscriptionService extends AbstractSubscriptionService
         return result;
     }
 
+    @Override
+    public AlarmInfo assignAlarm(TenantId tenantId, AlarmId alarmId, UserId assigneeId, long assignTs) {
+        AlarmOperationResult result = alarmService.assignAlarm(tenantId, alarmId, assigneeId, assignTs);
+        if (result.isSuccessful()) {
+            onAlarmUpdated(result);
+        } else {
+            log.warn("Failed to assign alarm!");
+        }
+        return result.getAlarmInfo();
+    }
+
+    @Override
+    public AlarmInfo unassignAlarm(TenantId tenantId, AlarmId alarmId, long assignTs) {
+        AlarmOperationResult result = alarmService.unassignAlarm(tenantId, alarmId, assignTs);
+        if (result.isSuccessful()) {
+            onAlarmUpdated(result);
+        } else {
+            log.warn("Failed to unassign alarm!");
+        }
+        return result.getAlarmInfo();
+    }
+
     @Override
     public ListenableFuture<Alarm> findAlarmByIdAsync(TenantId tenantId, AlarmId alarmId) {
         return alarmService.findAlarmByIdAsync(tenantId, alarmId);
@@ -166,8 +189,8 @@ public class DefaultAlarmSubscriptionService extends AbstractSubscriptionService
     }
 
     @Override
-    public AlarmSeverity findHighestAlarmSeverity(TenantId tenantId, EntityId entityId, AlarmSearchStatus alarmSearchStatus, AlarmStatus alarmStatus) {
+    public AlarmSeverity findHighestAlarmSeverity(TenantId tenantId, EntityId entityId, AlarmSearchStatus alarmSearchStatus, AlarmStatus alarmStatus, String assigneeId) {
-        return alarmService.findHighestAlarmSeverity(tenantId, entityId, alarmSearchStatus, alarmStatus);
+        return alarmService.findHighestAlarmSeverity(tenantId, entityId, alarmSearchStatus, alarmStatus, assigneeId);
     }
 
     @Override
@@ -182,18 +205,18 @@ public class DefaultAlarmSubscriptionService extends AbstractSubscriptionService
 
     private void onAlarmUpdated(AlarmOperationResult result) {
         wsCallBackExecutor.submit(() -> {
-            Alarm alarm = result.getAlarm();
+            AlarmInfo alarmInfo = result.getAlarmInfo();
-            TenantId tenantId = result.getAlarm().getTenantId();
+            TenantId tenantId = alarmInfo.getTenantId();
             for (EntityId entityId : result.getPropagatedEntitiesList()) {
                 TopicPartitionInfo tpi = partitionService.resolve(ServiceType.TB_CORE, tenantId, entityId);
                 if (currentPartitions.contains(tpi)) {
                     if (subscriptionManagerService.isPresent()) {
-                        subscriptionManagerService.get().onAlarmUpdate(tenantId, entityId, alarm, TbCallback.EMPTY);
+                        subscriptionManagerService.get().onAlarmUpdate(tenantId, entityId, alarmInfo, TbCallback.EMPTY);
                     } else {
                         log.warn("Possible misconfiguration because subscriptionManagerService is null!");
                     }
                 } else {
-                    TransportProtos.ToCoreMsg toCoreMsg = TbSubscriptionUtils.toAlarmUpdateProto(tenantId, entityId, alarm);
+                    TransportProtos.ToCoreMsg toCoreMsg = TbSubscriptionUtils.toAlarmUpdateProto(tenantId, entityId, alarmInfo);
                     clusterService.pushMsgToCore(tpi, entityId.getId(), toCoreMsg, null);
                 }
             }
@@ -202,18 +225,18 @@ public class DefaultAlarmSubscriptionService extends AbstractSubscriptionService
 
     private void onAlarmDeleted(AlarmOperationResult result) {
         wsCallBackExecutor.submit(() -> {
-            Alarm alarm = result.getAlarm();
+            AlarmInfo alarmInfo = result.getAlarmInfo();
-            TenantId tenantId = result.getAlarm().getTenantId();
+            TenantId tenantId = alarmInfo.getTenantId();
             for (EntityId entityId : result.getPropagatedEntitiesList()) {
                 TopicPartitionInfo tpi = partitionService.resolve(ServiceType.TB_CORE, tenantId, entityId);
                 if (currentPartitions.contains(tpi)) {
                     if (subscriptionManagerService.isPresent()) {
-                        subscriptionManagerService.get().onAlarmDeleted(tenantId, entityId, alarm, TbCallback.EMPTY);
+                        subscriptionManagerService.get().onAlarmDeleted(tenantId, entityId, alarmInfo, TbCallback.EMPTY);
                     } else {
                         log.warn("Possible misconfiguration because subscriptionManagerService is null!");
                     }
                 } else {
-                    TransportProtos.ToCoreMsg toCoreMsg = TbSubscriptionUtils.toAlarmDeletedProto(tenantId, entityId, alarm);
+                    TransportProtos.ToCoreMsg toCoreMsg = TbSubscriptionUtils.toAlarmDeletedProto(tenantId, entityId, alarmInfo);
                     clusterService.pushMsgToCore(tpi, entityId.getId(), toCoreMsg, null);
                 }
             }

application/src/main/java/org/thingsboard/server/service/telemetry/sub/AlarmSubscriptionUpdate.java

@@ -17,6 +17,7 @@ package org.thingsboard.server.service.telemetry.sub;
 
 import lombok.Getter;
 import org.thingsboard.server.common.data.alarm.Alarm;
+import org.thingsboard.server.common.data.alarm.AlarmInfo;
 import org.thingsboard.server.common.data.kv.TsKvEntry;
 import org.thingsboard.server.common.data.query.AlarmData;
 
@@ -36,15 +37,15 @@ public class AlarmSubscriptionUpdate {
     @Getter
     private String errorMsg;
     @Getter
-    private Alarm alarm;
+    private AlarmInfo alarm;
     @Getter
     private boolean alarmDeleted;
 
-    public AlarmSubscriptionUpdate(int subscriptionId, Alarm alarm) {
+    public AlarmSubscriptionUpdate(int subscriptionId, AlarmInfo alarm) {
         this(subscriptionId, alarm, false);
     }
 
-    public AlarmSubscriptionUpdate(int subscriptionId, Alarm alarm, boolean alarmDeleted) {
+    public AlarmSubscriptionUpdate(int subscriptionId, AlarmInfo alarm, boolean alarmDeleted) {
         super();
         this.subscriptionId = subscriptionId;
         this.alarm = alarm;
@@ -64,7 +65,7 @@ public class AlarmSubscriptionUpdate {
 
     @Override
     public String toString() {
-        return "AlarmUpdate [subscriptionId=" + subscriptionId + ", errorCode=" + errorCode + ", errorMsg=" + errorMsg + ", alarm="
+        return "AlarmUpdate [subscriptionId=" + subscriptionId + ", errorCode=" + errorCode + ", errorMsg=" + errorMsg +
-                + alarm + "]";
+                ", alarm=" + alarm + "]";
     }
-}
+}

application/src/main/java/org/thingsboard/server/service/ttl/AlarmsCleanUpService.java

@@ -21,6 +21,7 @@ import org.springframework.beans.factory.annotation.Value;
 import org.springframework.scheduling.annotation.Scheduled;
 import org.springframework.stereotype.Service;
 import org.thingsboard.server.common.data.alarm.Alarm;
+import org.thingsboard.server.common.data.alarm.AlarmInfo;
 import org.thingsboard.server.common.data.audit.ActionType;
 import org.thingsboard.server.common.data.id.AlarmId;
 import org.thingsboard.server.common.data.id.TenantId;
@@ -83,8 +84,8 @@ public class AlarmsCleanUpService {
                     PageData<AlarmId> toRemove = alarmDao.findAlarmsIdsByEndTsBeforeAndTenantId(expirationTime, tenantId, removalBatchRequest);
                     toRemove.getData().forEach(alarmId -> {
                         relationService.deleteEntityRelations(tenantId, alarmId);
-                        Alarm alarm = alarmService.deleteAlarm(tenantId, alarmId).getAlarm();
+                        AlarmInfo alarmInfo = alarmService.deleteAlarm(tenantId, alarmId).getAlarmInfo();
-                        entityActionService.pushEntityActionToRuleEngine(alarm.getOriginator(), alarm, tenantId, null, ActionType.ALARM_DELETE, null);
+                        entityActionService.pushEntityActionToRuleEngine(alarmInfo.getOriginator(), alarmInfo, tenantId, null, ActionType.ALARM_DELETE, null);
                     });
 
                     totalRemoved += toRemove.getTotalElements();

application/src/test/java/org/thingsboard/server/controller/AbstractWebTest.java

@@ -155,6 +155,7 @@ public abstract class AbstractWebTest extends AbstractInMemoryStorageTest {
     protected TenantId differentTenantId;
     protected CustomerId differentCustomerId;
     protected UserId customerUserId;
+    protected UserId differentCustomerUserId;
 
     @SuppressWarnings("rawtypes")
     private HttpMessageConverter mappingJackson2HttpMessageConverter;
@@ -325,7 +326,8 @@ public abstract class AbstractWebTest extends AbstractInMemoryStorageTest {
             differentCustomerUser.setCustomerId(savedDifferentCustomer.getId());
             differentCustomerUser.setEmail(DIFFERENT_CUSTOMER_USER_EMAIL);
 
-            createUserAndLogin(differentCustomerUser, DIFFERENT_CUSTOMER_USER_PASSWORD);
+            differentCustomerUser = createUserAndLogin(differentCustomerUser, DIFFERENT_CUSTOMER_USER_PASSWORD);
+            differentCustomerUserId = differentCustomerUser.getId();
         }
     }
 

application/src/test/java/org/thingsboard/server/controller/BaseAlarmControllerTest.java

@@ -29,6 +29,7 @@ import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Primary;
 import org.springframework.test.context.ContextConfiguration;
+import org.springframework.test.web.servlet.ResultActions;
 import org.thingsboard.common.util.JacksonUtil;
 import org.thingsboard.server.common.data.Device;
 import org.thingsboard.server.common.data.EntityType;
@@ -348,6 +349,129 @@ public abstract class BaseAlarmControllerTest extends AbstractControllerTest {
                 .andExpect(statusReason(containsString(msgErrorPermission)));
     }
 
+    @Test
+    public void testAssignAlarm() throws Exception {
+        loginTenantAdmin();
+        Alarm alarm = createAlarm(TEST_ALARM_TYPE);
+        Mockito.reset(tbClusterService, auditLogService);
+        long beforeAssignmentTs = System.currentTimeMillis();
+
+        doPost("/api/alarm/" + alarm.getId() + "/assign/" + tenantAdminUserId.getId()).andExpect(status().isOk());
+        Alarm foundAlarm = doGet("/api/alarm/" + alarm.getId(), Alarm.class);
+        Assert.assertNotNull(foundAlarm);
+        Assert.assertEquals(tenantAdminUserId, foundAlarm.getAssigneeId());
+        Assert.assertTrue(foundAlarm.getAssignTs() > beforeAssignmentTs && foundAlarm.getAssignTs() < System.currentTimeMillis());
+
+        testNotifyEntityAllOneTime(foundAlarm, foundAlarm.getId(), foundAlarm.getOriginator(),
+                tenantId, customerId, tenantAdminUserId, TENANT_ADMIN_EMAIL, ActionType.ALARM_ASSIGN);
+    }
+
+    @Test
+    public void testAssignAlarmViaDifferentTenant() throws Exception {
+        loginTenantAdmin();
+        Alarm alarm = createAlarm(TEST_ALARM_TYPE);
+
+        loginDifferentTenant();
+
+        Mockito.reset(tbClusterService, auditLogService);
+
+        doPost("/api/alarm/" + alarm.getId() + "/assign/" + tenantAdminUserId.getId()).andExpect(status().isForbidden());
+    }
+
+    @Test
+    public void testReassignAlarm() throws Exception {
+        loginTenantAdmin();
+        Alarm alarm = createAlarm(TEST_ALARM_TYPE);
+        Mockito.reset(tbClusterService, auditLogService);
+        long beforeAssignmentTs = System.currentTimeMillis();
+
+        doPost("/api/alarm/" + alarm.getId() + "/assign/" + tenantAdminUserId.getId()).andExpect(status().isOk());
+
+        Alarm foundAlarm = doGet("/api/alarm/" + alarm.getId(), Alarm.class);
+        Assert.assertNotNull(foundAlarm);
+        Assert.assertEquals(tenantAdminUserId, foundAlarm.getAssigneeId());
+        Assert.assertTrue(foundAlarm.getAssignTs() > beforeAssignmentTs && foundAlarm.getAssignTs() < System.currentTimeMillis());
+
+        testNotifyEntityAllOneTime(foundAlarm, foundAlarm.getId(), foundAlarm.getOriginator(),
+                tenantId, customerId, tenantAdminUserId, TENANT_ADMIN_EMAIL, ActionType.ALARM_ASSIGN);
+
+        logout();
+
+        loginCustomerUser();
+        Mockito.reset(tbClusterService, auditLogService);
+        beforeAssignmentTs = System.currentTimeMillis();
+
+        doPost("/api/alarm/" + alarm.getId() + "/assign/" + customerUserId.getId()).andExpect(status().isOk());
+
+        foundAlarm = doGet("/api/alarm/" + alarm.getId(), Alarm.class);
+        Assert.assertNotNull(foundAlarm);
+        Assert.assertEquals(customerUserId, foundAlarm.getAssigneeId());
+        Assert.assertTrue(foundAlarm.getAssignTs() > beforeAssignmentTs && foundAlarm.getAssignTs() < System.currentTimeMillis());
+
+        testNotifyEntityAllOneTime(foundAlarm, foundAlarm.getId(), foundAlarm.getOriginator(),
+                tenantId, customerId, customerUserId, CUSTOMER_USER_EMAIL, ActionType.ALARM_ASSIGN);
+    }
+
+    @Test
+    public void testUnassignAlarm() throws Exception {
+        loginTenantAdmin();
+        Alarm alarm = createAlarm(TEST_ALARM_TYPE);
+        Mockito.reset(tbClusterService, auditLogService);
+        long beforeAssignmentTs = System.currentTimeMillis();
+
+        doPost("/api/alarm/" + alarm.getId() + "/assign/" + tenantAdminUserId.getId()).andExpect(status().isOk());
+        Alarm foundAlarm = doGet("/api/alarm/" + alarm.getId(), Alarm.class);
+        Assert.assertNotNull(foundAlarm);
+        Assert.assertEquals(tenantAdminUserId, foundAlarm.getAssigneeId());
+        Assert.assertTrue(foundAlarm.getAssignTs() > beforeAssignmentTs && foundAlarm.getAssignTs() < System.currentTimeMillis());
+
+        testNotifyEntityAllOneTime(foundAlarm, foundAlarm.getId(), foundAlarm.getOriginator(),
+                tenantId, customerId, tenantAdminUserId, TENANT_ADMIN_EMAIL, ActionType.ALARM_ASSIGN);
+
+        beforeAssignmentTs = System.currentTimeMillis();
+
+        doDelete("/api/alarm/" + alarm.getId() + "/assign").andExpect(status().isOk());
+        foundAlarm = doGet("/api/alarm/" + alarm.getId(), Alarm.class);
+        Assert.assertNotNull(foundAlarm);
+        Assert.assertNull(foundAlarm.getAssigneeId());
+        Assert.assertTrue(foundAlarm.getAssignTs() > beforeAssignmentTs && foundAlarm.getAssignTs() < System.currentTimeMillis());
+
+        testNotifyEntityAllOneTime(foundAlarm, foundAlarm.getId(), foundAlarm.getOriginator(),
+                tenantId, customerId, tenantAdminUserId, TENANT_ADMIN_EMAIL, ActionType.ALARM_UNASSIGN);
+    }
+
+    @Test
+    public void testUnassignTenantAlarmViaCustomer() throws Exception {
+        loginTenantAdmin();
+        Alarm alarm = createAlarm(TEST_ALARM_TYPE);
+        Mockito.reset(tbClusterService, auditLogService);
+        long beforeAssignmentTs = System.currentTimeMillis();
+
+        doPost("/api/alarm/" + alarm.getId() + "/assign/" + tenantAdminUserId.getId()).andExpect(status().isOk());
+        Alarm foundAlarm = doGet("/api/alarm/" + alarm.getId(), Alarm.class);
+        Assert.assertNotNull(foundAlarm);
+        Assert.assertEquals(tenantAdminUserId, foundAlarm.getAssigneeId());
+        Assert.assertTrue(foundAlarm.getAssignTs() > beforeAssignmentTs && foundAlarm.getAssignTs() < System.currentTimeMillis());
+
+        testNotifyEntityAllOneTime(foundAlarm, foundAlarm.getId(), foundAlarm.getOriginator(),
+                tenantId, customerId, tenantAdminUserId, TENANT_ADMIN_EMAIL, ActionType.ALARM_ASSIGN);
+
+        logout();
+        loginCustomerUser();
+
+        Mockito.reset(tbClusterService, auditLogService);
+        beforeAssignmentTs = System.currentTimeMillis();
+
+        doDelete("/api/alarm/" + alarm.getId() + "/assign").andExpect(status().isOk());
+        foundAlarm = doGet("/api/alarm/" + alarm.getId(), Alarm.class);
+        Assert.assertNotNull(foundAlarm);
+        Assert.assertNull(foundAlarm.getAssigneeId());
+        Assert.assertTrue(foundAlarm.getAssignTs() > beforeAssignmentTs && foundAlarm.getAssignTs() < System.currentTimeMillis());
+
+        testNotifyEntityAllOneTime(foundAlarm, foundAlarm.getId(), foundAlarm.getOriginator(),
+                tenantId, customerId, customerUserId, CUSTOMER_USER_EMAIL, ActionType.ALARM_UNASSIGN);
+    }
+
     @Test
     public void testFindAlarmsViaCustomerUser() throws Exception {
         loginCustomerUser();

application/src/test/java/org/thingsboard/server/service/entitiy/alarm/DefaultTbAlarmServiceTest.java

@@ -27,6 +27,7 @@ import org.springframework.test.context.junit4.SpringRunner;
 import org.thingsboard.server.cluster.TbClusterService;
 import org.thingsboard.server.common.data.User;
 import org.thingsboard.server.common.data.alarm.Alarm;
+import org.thingsboard.server.common.data.alarm.AlarmInfo;
 import org.thingsboard.server.common.data.alarm.AlarmStatus;
 import org.thingsboard.server.common.data.exception.ThingsboardException;
 import org.thingsboard.server.common.data.id.UserId;
@@ -81,7 +82,7 @@ public class DefaultTbAlarmServiceTest {
 
     @Test
     public void testSave() throws ThingsboardException {
-        var alarm = new Alarm();
+        var alarm = new AlarmInfo();
         when(alarmSubscriptionService.createOrUpdateAlarm(alarm)).thenReturn(alarm);
         service.save(alarm, new User());
 

common/dao-api/src/main/java/org/thingsboard/server/dao/alarm/AlarmOperationResult.java

@@ -19,6 +19,7 @@ import lombok.AllArgsConstructor;
 import lombok.Data;
 import org.thingsboard.server.common.data.alarm.Alarm;
 import org.thingsboard.server.common.data.alarm.AlarmSeverity;
+import org.thingsboard.server.common.data.alarm.AlarmInfo;
 import org.thingsboard.server.common.data.id.EntityId;
 
 import java.util.Collections;
@@ -27,17 +28,29 @@ import java.util.List;
 @Data
 @AllArgsConstructor
 public class AlarmOperationResult {
-    private final Alarm alarm;
+    private final AlarmInfo alarmInfo;
     private final boolean successful;
     private final boolean created;
     private final AlarmSeverity oldSeverity;
     private final List<EntityId> propagatedEntitiesList;
 
     public AlarmOperationResult(Alarm alarm, boolean successful) {
-        this(alarm, successful, Collections.emptyList());
+        this(new AlarmInfo(alarm, null, null, null, null, null), successful, Collections.emptyList());
     }
 
-    public AlarmOperationResult(Alarm alarm, boolean successful, List<EntityId> propagatedEntitiesList) {
+    public AlarmOperationResult(AlarmInfo alarmInfo, boolean successful) {
-        this(alarm, successful, false, null, propagatedEntitiesList);
+        this(alarmInfo, successful, Collections.emptyList());
+    }
+
+    public AlarmOperationResult(AlarmInfo alarmInfo, boolean successful, List<EntityId> propagatedEntitiesList) {
+        this(alarmInfo, successful, false, null, propagatedEntitiesList);
+    }
+
+    public AlarmOperationResult(AlarmInfo alarmInfo, boolean successful, boolean created, List<EntityId> propagatedEntitiesList) {
+        this.alarmInfo = alarmInfo;
+        this.successful = successful;
+        this.created = created;
+        this.propagatedEntitiesList = propagatedEntitiesList;
+        this.oldSeverity = null;
     }
 }

common/dao-api/src/main/java/org/thingsboard/server/dao/alarm/AlarmService.java

@@ -27,6 +27,7 @@ import org.thingsboard.server.common.data.id.AlarmId;
 import org.thingsboard.server.common.data.id.CustomerId;
 import org.thingsboard.server.common.data.id.EntityId;
 import org.thingsboard.server.common.data.id.TenantId;
+import org.thingsboard.server.common.data.id.UserId;
 import org.thingsboard.server.common.data.page.PageData;
 import org.thingsboard.server.common.data.query.AlarmData;
 import org.thingsboard.server.common.data.query.AlarmDataQuery;
@@ -49,6 +50,10 @@ public interface AlarmService extends EntityDaoService {
 
     ListenableFuture<AlarmOperationResult> clearAlarm(TenantId tenantId, AlarmId alarmId, JsonNode details, long clearTs);
 
+    AlarmOperationResult assignAlarm(TenantId tenantId, AlarmId alarmId, UserId assigneeId, long assignTs);
+
+    AlarmOperationResult unassignAlarm(TenantId tenantId, AlarmId alarmId, long assignTs);
+
     Alarm findAlarmById(TenantId tenantId, AlarmId alarmId);
 
     ListenableFuture<Alarm> findAlarmByIdAsync(TenantId tenantId, AlarmId alarmId);
@@ -60,7 +65,7 @@ public interface AlarmService extends EntityDaoService {
     ListenableFuture<PageData<AlarmInfo>> findCustomerAlarms(TenantId tenantId, CustomerId customerId, AlarmQuery query);
 
     AlarmSeverity findHighestAlarmSeverity(TenantId tenantId, EntityId entityId, AlarmSearchStatus alarmSearchStatus,
-                                           AlarmStatus alarmStatus);
+                                           AlarmStatus alarmStatus, String assigneeId);
 
     ListenableFuture<Alarm> findLatestByOriginatorAndType(TenantId tenantId, EntityId originator, String type);
 

common/dao-api/src/main/java/org/thingsboard/server/dao/entity/EntityService.java

@@ -29,6 +29,8 @@ public interface EntityService {
 
     Optional<String> fetchEntityName(TenantId tenantId, EntityId entityId);
 
+    Optional<String> fetchEntityLabel(TenantId tenantId, EntityId entityId);
+
     Optional<CustomerId> fetchEntityCustomerId(TenantId tenantId, EntityId entityId);
 
     long countEntitiesByQuery(TenantId tenantId, CustomerId customerId, EntityCountQuery query);

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

@@ -21,7 +21,7 @@ import org.thingsboard.server.common.data.validation.Length;
 import org.thingsboard.server.common.data.validation.NoXss;
 
 @EqualsAndHashCode(callSuper = true)
-public abstract class ContactBased<I extends UUIDBased> extends SearchTextBasedWithAdditionalInfo<I> implements HasName {
+public abstract class ContactBased<I extends UUIDBased> extends SearchTextBasedWithAdditionalInfo<I> implements HasEmail {
 
     private static final long serialVersionUID = 5047448057830660988L;
 

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

@@ -29,7 +29,7 @@ import org.thingsboard.server.common.data.validation.Length;
 import org.thingsboard.server.common.data.validation.NoXss;
 
 @EqualsAndHashCode(callSuper = true)
-public class Customer extends ContactBased<CustomerId> implements HasTenantId, ExportableEntity<CustomerId> {
+public class Customer extends ContactBased<CustomerId> implements HasTenantId, ExportableEntity<CustomerId>, HasTitle {
 
     private static final long serialVersionUID = -1599722990298929275L;
 

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

@@ -31,7 +31,7 @@ import java.util.Objects;
 import java.util.Set;
 
 @ApiModel
-public class DashboardInfo extends SearchTextBased<DashboardId> implements HasName, HasTenantId {
+public class DashboardInfo extends SearchTextBased<DashboardId> implements HasName, HasTenantId, HasTitle {
 
     private TenantId tenantId;
     @NoXss

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

@@ -74,6 +74,8 @@ public class DataConstants {
     public static final String TIMESERIES_DELETED = "TIMESERIES_DELETED";
     public static final String ALARM_ACK = "ALARM_ACK";
     public static final String ALARM_CLEAR = "ALARM_CLEAR";
+    public static final String ALARM_ASSIGN = "ALARM_ASSIGN";
+    public static final String ALARM_UNASSIGN = "ALARM_UNASSIGN";
     public static final String ALARM_DELETE = "ALARM_DELETE";
     public static final String ENTITY_ASSIGNED_FROM_TENANT = "ENTITY_ASSIGNED_FROM_TENANT";
     public static final String ENTITY_ASSIGNED_TO_TENANT = "ENTITY_ASSIGNED_TO_TENANT";

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

@@ -40,7 +40,7 @@ import java.util.Optional;
 @ApiModel
 @EqualsAndHashCode(callSuper = true)
 @Slf4j
-public class Device extends SearchTextBasedWithAdditionalInfo<DeviceId> implements HasName, HasTenantId, HasCustomerId, HasOtaPackage, ExportableEntity<DeviceId> {
+public class Device extends SearchTextBasedWithAdditionalInfo<DeviceId> implements HasLabel, HasTenantId, HasCustomerId, HasOtaPackage, ExportableEntity<DeviceId> {
 
     private static final long serialVersionUID = 2807343040519543363L;
 

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

@@ -19,5 +19,25 @@ package org.thingsboard.server.common.data;
  * @author Andrew Shvayka
  */
 public enum EntityType {
-    TENANT, CUSTOMER, USER, DASHBOARD, ASSET, DEVICE, ALARM, RULE_CHAIN, RULE_NODE, ENTITY_VIEW, WIDGETS_BUNDLE, WIDGET_TYPE, TENANT_PROFILE, DEVICE_PROFILE, ASSET_PROFILE, API_USAGE_STATE, TB_RESOURCE, OTA_PACKAGE, EDGE, RPC, QUEUE;
+    TENANT,
+    CUSTOMER,
+    USER,
+    DASHBOARD,
+    ASSET,
+    DEVICE,
+    ALARM,
+    RULE_CHAIN,
+    RULE_NODE,
+    ENTITY_VIEW,
+    WIDGETS_BUNDLE,
+    WIDGET_TYPE,
+    TENANT_PROFILE,
+    DEVICE_PROFILE,
+    ASSET_PROFILE,
+    API_USAGE_STATE,
+    TB_RESOURCE,
+    OTA_PACKAGE,
+    EDGE,
+    RPC,
+    QUEUE
 }

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

@@ -0,0 +1,22 @@
+/**
+ * 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;
+
+public interface HasEmail extends HasName {
+
+    String getEmail();
+
+}

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

@@ -0,0 +1,22 @@
+/**
+ * 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;
+
+public interface HasLabel extends HasName {
+
+    String getLabel();
+
+}

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

@@ -0,0 +1,22 @@
+/**
+ * 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;
+
+public interface HasTitle {
+
+    String getTitle();
+
+}

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

@@ -36,7 +36,7 @@ import org.thingsboard.server.common.data.ota.OtaPackageType;
 @Slf4j
 @Data
 @EqualsAndHashCode(callSuper = true)
-public class OtaPackageInfo extends SearchTextBasedWithAdditionalInfo<OtaPackageId> implements HasName, HasTenantId {
+public class OtaPackageInfo extends SearchTextBasedWithAdditionalInfo<OtaPackageId> implements HasName, HasTenantId, HasTitle {
 
     private static final long serialVersionUID = 3168391583570815419L;
 

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

@@ -28,7 +28,7 @@ import org.thingsboard.server.common.data.validation.NoXss;
 
 @ApiModel
 @EqualsAndHashCode(callSuper = true)
-public class Tenant extends ContactBased<TenantId> implements HasTenantId {
+public class Tenant extends ContactBased<TenantId> implements HasTenantId, HasTitle {
 
     private static final long serialVersionUID = 8057243243859922101L;
 

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

@@ -30,6 +30,7 @@ import org.thingsboard.server.common.data.id.AlarmId;
 import org.thingsboard.server.common.data.id.CustomerId;
 import org.thingsboard.server.common.data.id.EntityId;
 import org.thingsboard.server.common.data.id.TenantId;
+import org.thingsboard.server.common.data.id.UserId;
 import org.thingsboard.server.common.data.validation.Length;
 import org.thingsboard.server.common.data.validation.NoXss;
 
@@ -60,23 +61,27 @@ public class Alarm extends BaseData<AlarmId> implements HasName, HasTenantId, Ha
     private AlarmSeverity severity;
     @ApiModelProperty(position = 9, required = true, value = "Alarm status", example = "CLEARED_UNACK")
     private AlarmStatus status;
-    @ApiModelProperty(position = 10, value = "Timestamp of the alarm start time, in milliseconds", example = "1634058704565")
+    @ApiModelProperty(position = 10, value = "Alarm assignee user id")
+    private UserId assigneeId;
+    @ApiModelProperty(position = 11, value = "Timestamp of the alarm start time, in milliseconds", example = "1634058704565")
     private long startTs;
-    @ApiModelProperty(position = 11, value = "Timestamp of the alarm end time(last time update), in milliseconds", example = "1634111163522")
+    @ApiModelProperty(position = 12, value = "Timestamp of the alarm end time(last time update), in milliseconds", example = "1634111163522")
     private long endTs;
-    @ApiModelProperty(position = 12, value = "Timestamp of the alarm acknowledgement, in milliseconds", example = "1634115221948")
+    @ApiModelProperty(position = 13, value = "Timestamp of the alarm acknowledgement, in milliseconds", example = "1634115221948")
     private long ackTs;
-    @ApiModelProperty(position = 13, value = "Timestamp of the alarm clearing, in milliseconds", example = "1634114528465")
+    @ApiModelProperty(position = 14, value = "Timestamp of the alarm clearing, in milliseconds", example = "1634114528465")
     private long clearTs;
-    @ApiModelProperty(position = 14, value = "JSON object with alarm details")
+    @ApiModelProperty(position = 15, value = "Timestamp of the alarm assigning0, in milliseconds", example = "1634115928465")
+    private long assignTs;
+    @ApiModelProperty(position = 16, value = "JSON object with alarm details")
     private transient JsonNode details;
-    @ApiModelProperty(position = 15, value = "Propagation flag to specify if alarm should be propagated to parent entities of alarm originator", example = "true")
+    @ApiModelProperty(position = 17, value = "Propagation flag to specify if alarm should be propagated to parent entities of alarm originator", example = "true")
     private boolean propagate;
-    @ApiModelProperty(position = 16, value = "Propagation flag to specify if alarm should be propagated to the owner (tenant or customer) of alarm originator", example = "true")
+    @ApiModelProperty(position = 18, value = "Propagation flag to specify if alarm should be propagated to the owner (tenant or customer) of alarm originator", example = "true")
     private boolean propagateToOwner;
-    @ApiModelProperty(position = 17, value = "Propagation flag to specify if alarm should be propagated to the tenant entity", example = "true")
+    @ApiModelProperty(position = 19, value = "Propagation flag to specify if alarm should be propagated to the tenant entity", example = "true")
     private boolean propagateToTenant;
-    @ApiModelProperty(position = 18, value = "JSON array of relation types that should be used for propagation. " +
+    @ApiModelProperty(position = 20, value = "JSON array of relation types that should be used for propagation. " +
             "By default, 'propagateRelationTypes' array is empty which means that the alarm will be propagated based on any relation type to parent entities. " +
             "This parameter should be used only in case when 'propagate' parameter is set to true, otherwise, 'propagateRelationTypes' array will be ignored.")
     private List<String> propagateRelationTypes;
@@ -98,10 +103,12 @@ public class Alarm extends BaseData<AlarmId> implements HasName, HasTenantId, Ha
         this.originator = alarm.getOriginator();
         this.severity = alarm.getSeverity();
         this.status = alarm.getStatus();
+        this.assigneeId = alarm.getAssigneeId();
         this.startTs = alarm.getStartTs();
         this.endTs = alarm.getEndTs();
         this.ackTs = alarm.getAckTs();
         this.clearTs = alarm.getClearTs();
+        this.assignTs = alarm.getAssignTs();
         this.details = alarm.getDetails();
         this.propagate = alarm.isPropagate();
         this.propagateToOwner = alarm.isPropagateToOwner();

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

@@ -17,15 +17,42 @@ package org.thingsboard.server.common.data.alarm;
 
 import io.swagger.annotations.ApiModel;
 import io.swagger.annotations.ApiModelProperty;
+import lombok.Getter;
+import lombok.Setter;
+import org.thingsboard.server.common.data.User;
+
+import java.util.Objects;
 
 @ApiModel
 public class AlarmInfo extends Alarm {
 
     private static final long serialVersionUID = 2807343093519543363L;
 
+    @Getter
+    @Setter
     @ApiModelProperty(position = 19, value = "Alarm originator name", example = "Thermostat")
     private String originatorName;
 
+    @Getter
+    @Setter
+    @ApiModelProperty(position = 20, value = "Alarm originator label", example = "Thermostat label")
+    private String originatorLabel;
+
+    @Getter
+    @Setter
+    @ApiModelProperty(position = 21, value = "Alarm assignee first name")
+    private String assigneeFirstName;
+
+    @Getter
+    @Setter
+    @ApiModelProperty(position = 22, value = "Alarm assignee last name")
+    private String assigneeLastName;
+
+    @Getter
+    @Setter
+    @ApiModelProperty(position = 23, value = "Alarm assignee email")
+    private String assigneeEmail;
+
     public AlarmInfo() {
         super();
     }
@@ -34,17 +61,22 @@ public class AlarmInfo extends Alarm {
         super(alarm);
     }
 
-    public AlarmInfo(Alarm alarm, String originatorName) {
+    public AlarmInfo(AlarmInfo alarmInfo) {
-        super(alarm);
+        super(alarmInfo);
-        this.originatorName = originatorName;
+        this.originatorName = alarmInfo.originatorName;
-    }
+        this.originatorLabel = alarmInfo.originatorLabel;
-
+        this.assigneeFirstName = alarmInfo.assigneeFirstName;
-    public String getOriginatorName() {
+        this.assigneeLastName = alarmInfo.assigneeLastName;
-        return originatorName;
+        this.assigneeEmail = alarmInfo.assigneeEmail;
     }
 
-    public void setOriginatorName(String originatorName) {
+    public AlarmInfo(Alarm alarm, String originatorName, String originatorLabel, String assigneeFirstName, String assigneeLastName, String assigneeEmail) {
+        super(alarm);
         this.originatorName = originatorName;
+        this.originatorLabel = originatorLabel;
+        this.assigneeFirstName = assigneeFirstName;
+        this.assigneeLastName = assigneeLastName;
+        this.assigneeEmail = assigneeEmail;
     }
 
     @Override
@@ -55,14 +87,21 @@ public class AlarmInfo extends Alarm {
 
         AlarmInfo alarmInfo = (AlarmInfo) o;
 
-        return originatorName != null ? originatorName.equals(alarmInfo.originatorName) : alarmInfo.originatorName == null;
+        return (Objects.equals(originatorName, alarmInfo.originatorName)) &&
-
+                (Objects.equals(originatorLabel, alarmInfo.originatorLabel)) &&
+                (Objects.equals(assigneeFirstName, alarmInfo.assigneeFirstName)) &&
+                (Objects.equals(assigneeLastName, alarmInfo.assigneeLastName)) &&
+                (Objects.equals(assigneeEmail, alarmInfo.assigneeEmail));
     }
 
     @Override
     public int hashCode() {
         int result = super.hashCode();
-        result = 31 * result + (originatorName != null ? originatorName.hashCode() : 0);
+        result = 31 * result + (originatorName != null ? originatorName.hashCode() : 0)
+                + (originatorLabel != null ? originatorLabel.hashCode() : 0)
+                + (assigneeFirstName != null ? assigneeFirstName.hashCode() : 0)
+                + (assigneeLastName != null ? assigneeLastName.hashCode() : 0)
+                + (assigneeEmail != null ? assigneeEmail.hashCode() : 0);
         return result;
     }
 }

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

@@ -19,6 +19,7 @@ import lombok.AllArgsConstructor;
 import lombok.Builder;
 import lombok.Data;
 import org.thingsboard.server.common.data.id.EntityId;
+import org.thingsboard.server.common.data.id.UserId;
 import org.thingsboard.server.common.data.page.TimePageLink;
 
 /**
@@ -33,6 +34,7 @@ public class AlarmQuery {
     private TimePageLink pageLink;
     private AlarmSearchStatus searchStatus;
     private AlarmStatus status;
+    private UserId assigneeId;
     private Boolean fetchOriginator;
 
 }

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

@@ -23,6 +23,7 @@ import org.thingsboard.server.common.data.id.AlarmId;
 import org.thingsboard.server.common.data.id.CustomerId;
 import org.thingsboard.server.common.data.id.EntityId;
 import org.thingsboard.server.common.data.id.TenantId;
+import org.thingsboard.server.common.data.id.UserId;
 
 @Data
 @NoArgsConstructor
@@ -35,6 +36,7 @@ public class EntityAlarm implements HasTenantId {
     private String alarmType;
 
     private CustomerId customerId;
+    private UserId assigneeId;
     private AlarmId alarmId;
 
 }

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

@@ -23,6 +23,7 @@ import lombok.Getter;
 import lombok.Setter;
 import org.thingsboard.server.common.data.ExportableEntity;
 import org.thingsboard.server.common.data.HasCustomerId;
+import org.thingsboard.server.common.data.HasLabel;
 import org.thingsboard.server.common.data.HasName;
 import org.thingsboard.server.common.data.HasTenantId;
 import org.thingsboard.server.common.data.SearchTextBasedWithAdditionalInfo;
@@ -37,7 +38,7 @@ import java.util.Optional;
 
 @ApiModel
 @EqualsAndHashCode(callSuper = true)
-public class Asset extends SearchTextBasedWithAdditionalInfo<AssetId> implements HasName, HasTenantId, HasCustomerId, ExportableEntity<AssetId> {
+public class Asset extends SearchTextBasedWithAdditionalInfo<AssetId> implements HasLabel, HasTenantId, HasCustomerId, ExportableEntity<AssetId> {
 
     private static final long serialVersionUID = 2807343040519543363L;
 

common/data/src/main/java/org/thingsboard/server/common/data/audit/ActionType.java

@@ -40,6 +40,8 @@ public enum ActionType {
     ALARM_ACK(false),
     ALARM_CLEAR(false),
     ALARM_DELETE(false),
+    ALARM_ASSIGN(false),
+    ALARM_UNASSIGN(false),
     LOGIN(false),
     LOGOUT(false),
     LOCKOUT(false),

common/data/src/main/java/org/thingsboard/server/common/data/edge/Edge.java

@@ -21,6 +21,7 @@ import lombok.EqualsAndHashCode;
 import lombok.Setter;
 import lombok.ToString;
 import org.thingsboard.server.common.data.HasCustomerId;
+import org.thingsboard.server.common.data.HasLabel;
 import org.thingsboard.server.common.data.HasName;
 import org.thingsboard.server.common.data.HasTenantId;
 import org.thingsboard.server.common.data.SearchTextBasedWithAdditionalInfo;
@@ -35,7 +36,7 @@ import org.thingsboard.server.common.data.validation.NoXss;
 @EqualsAndHashCode(callSuper = true)
 @ToString
 @Setter
-public class Edge extends SearchTextBasedWithAdditionalInfo<EdgeId> implements HasName, HasTenantId, HasCustomerId {
+public class Edge extends SearchTextBasedWithAdditionalInfo<EdgeId> implements HasLabel, HasTenantId, HasCustomerId {
 
     private static final long serialVersionUID = 4934987555236873728L;
 

common/data/src/main/java/org/thingsboard/server/common/data/edge/EdgeEventActionType.java

@@ -31,6 +31,8 @@ public enum EdgeEventActionType {
     RPC_CALL,
     ALARM_ACK,
     ALARM_CLEAR,
+    ALARM_ASSIGN,
+    ALARM_UNASSIGN,
     ASSIGNED_TO_EDGE,
     UNASSIGNED_FROM_EDGE,
     CREDENTIALS_REQUEST,

common/data/src/main/java/org/thingsboard/server/common/data/query/AlarmData.java

@@ -31,8 +31,14 @@ public class AlarmData extends AlarmInfo {
     @Getter
     private final Map<EntityKeyType, Map<String, TsValue>> latest;
 
-    public AlarmData(Alarm alarm, String originatorName, EntityId entityId) {
+    public AlarmData(AlarmInfo alarmInfo, EntityId entityId) {
-        super(alarm, originatorName);
+        super(alarmInfo);
+        this.entityId = entityId;
+        this.latest = new HashMap<>();
+    }
+
+    public AlarmData(Alarm alarm, EntityId entityId) {
+        super(alarm);
         this.entityId = entityId;
         this.latest = new HashMap<>();
     }

common/data/src/main/java/org/thingsboard/server/common/data/widget/BaseWidgetType.java

@@ -18,6 +18,7 @@ package org.thingsboard.server.common.data.widget;
 import io.swagger.annotations.ApiModelProperty;
 import lombok.Data;
 import org.thingsboard.server.common.data.BaseData;
+import org.thingsboard.server.common.data.HasName;
 import org.thingsboard.server.common.data.HasTenantId;
 import org.thingsboard.server.common.data.id.TenantId;
 import org.thingsboard.server.common.data.id.WidgetTypeId;
@@ -25,7 +26,7 @@ import org.thingsboard.server.common.data.validation.Length;
 import org.thingsboard.server.common.data.validation.NoXss;
 
 @Data
-public class BaseWidgetType extends BaseData<WidgetTypeId> implements HasTenantId {
+public class BaseWidgetType extends BaseData<WidgetTypeId> implements HasName, HasTenantId {
 
     private static final long serialVersionUID = 8388684344603660756L;
 

common/data/src/main/java/org/thingsboard/server/common/data/widget/WidgetsBundle.java

@@ -25,6 +25,7 @@ import lombok.Setter;
 import org.thingsboard.server.common.data.ExportableEntity;
 import org.thingsboard.server.common.data.HasName;
 import org.thingsboard.server.common.data.HasTenantId;
+import org.thingsboard.server.common.data.HasTitle;
 import org.thingsboard.server.common.data.SearchTextBased;
 import org.thingsboard.server.common.data.id.TenantId;
 import org.thingsboard.server.common.data.id.WidgetsBundleId;
@@ -33,7 +34,7 @@ import org.thingsboard.server.common.data.validation.NoXss;
 
 @ApiModel
 @EqualsAndHashCode(callSuper = true)
-public class WidgetsBundle extends SearchTextBased<WidgetsBundleId> implements HasName, HasTenantId, ExportableEntity<WidgetsBundleId> {
+public class WidgetsBundle extends SearchTextBased<WidgetsBundleId> implements HasName, HasTenantId, ExportableEntity<WidgetsBundleId>, HasTitle {
 
     private static final long serialVersionUID = -7627368878362410489L;
 

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

@@ -26,6 +26,7 @@ import org.thingsboard.server.common.data.id.AlarmId;
 import org.thingsboard.server.common.data.id.CustomerId;
 import org.thingsboard.server.common.data.id.EntityId;
 import org.thingsboard.server.common.data.id.TenantId;
+import org.thingsboard.server.common.data.id.UserId;
 import org.thingsboard.server.common.data.page.PageData;
 import org.thingsboard.server.common.data.page.PageLink;
 import org.thingsboard.server.common.data.query.AlarmData;
@@ -58,7 +59,7 @@ public interface AlarmDao extends Dao<Alarm> {
 
     PageData<AlarmData> findAlarmDataByQueryForEntities(TenantId tenantId, AlarmDataQuery query, Collection<EntityId> orderedEntityIds);
 
-    Set<AlarmSeverity> findAlarmSeverities(TenantId tenantId, EntityId entityId, Set<AlarmStatus> status);
+    Set<AlarmSeverity> findAlarmSeverities(TenantId tenantId, EntityId entityId, Set<AlarmStatus> status, String assigneeId);
 
     PageData<AlarmId> findAlarmsIdsByEndTsBeforeAndTenantId(Long time, TenantId tenantId, PageLink pageLink);
 

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

@@ -28,6 +28,7 @@ import org.springframework.transaction.annotation.Transactional;
 import org.springframework.util.CollectionUtils;
 import org.thingsboard.common.util.ThingsBoardThreadFactory;
 import org.thingsboard.server.common.data.EntityType;
+import org.thingsboard.server.common.data.User;
 import org.thingsboard.server.common.data.alarm.Alarm;
 import org.thingsboard.server.common.data.alarm.AlarmInfo;
 import org.thingsboard.server.common.data.alarm.AlarmQuery;
@@ -41,6 +42,7 @@ import org.thingsboard.server.common.data.id.CustomerId;
 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.common.data.id.UserId;
 import org.thingsboard.server.common.data.page.PageData;
 import org.thingsboard.server.common.data.query.AlarmData;
 import org.thingsboard.server.common.data.query.AlarmDataQuery;
@@ -51,6 +53,7 @@ import org.thingsboard.server.common.data.relation.RelationsSearchParameters;
 import org.thingsboard.server.dao.entity.AbstractEntityService;
 import org.thingsboard.server.dao.entity.EntityService;
 import org.thingsboard.server.dao.service.DataValidator;
+import org.thingsboard.server.dao.user.UserService;
 
 import javax.annotation.Nullable;
 import javax.annotation.PostConstruct;
@@ -84,6 +87,9 @@ public class BaseAlarmService extends AbstractEntityService implements AlarmServ
     @Autowired
     private EntityService entityService;
 
+    @Autowired
+    private UserService userService;
+
     @Autowired
     private DataValidator<Alarm> alarmDataValidator;
 
@@ -116,7 +122,7 @@ public class BaseAlarmService extends AbstractEntityService implements AlarmServ
             if (alarm.getEndTs() == 0L) {
                 alarm.setEndTs(alarm.getStartTs());
             }
-            alarm.setCustomerId(entityService.fetchEntityCustomerId(alarm.getTenantId(), alarm.getOriginator()).get());
+            alarm.setCustomerId(entityService.fetchEntityCustomerId(alarm.getTenantId(), alarm.getOriginator()).orElse(null));
             if (alarm.getId() == null) {
                 Alarm existing = alarmDao.findLatestByOriginatorAndType(alarm.getTenantId(), alarm.getOriginator(), alarm.getType());
                 if (existing == null || existing.getStatus().isCleared()) {
@@ -155,7 +161,8 @@ public class BaseAlarmService extends AbstractEntityService implements AlarmServ
         if (alarm == null) {
             return new AlarmOperationResult(alarm, false);
         }
-        AlarmOperationResult result = new AlarmOperationResult(alarm, true, new ArrayList<>(getPropagationEntityIds(alarm)));
+        AlarmInfo alarmInfo = getAlarmInfo(tenantId, alarm);
+        AlarmOperationResult result = new AlarmOperationResult(alarmInfo, true, new ArrayList<>(getPropagationEntityIds(alarm)));
         deleteEntityRelations(tenantId, alarm.getId());
         alarmDao.removeById(tenantId, alarm.getUuidId());
         return result;
@@ -165,7 +172,8 @@ public class BaseAlarmService extends AbstractEntityService implements AlarmServ
         log.debug("New Alarm : {}", alarm);
         Alarm saved = alarmDao.save(alarm.getTenantId(), alarm);
         List<EntityId> propagatedEntitiesList = createEntityAlarmRecords(saved);
-        return new AlarmOperationResult(saved, true, true, null, propagatedEntitiesList);
+        AlarmInfo alarmInfo = getAlarmInfo(alarm.getTenantId(), saved);
+        return new AlarmOperationResult(alarmInfo, true, true, propagatedEntitiesList);
     }
 
     private List<EntityId> createEntityAlarmRecords(Alarm alarm) throws InterruptedException, ExecutionException {
@@ -221,7 +229,8 @@ public class BaseAlarmService extends AbstractEntityService implements AlarmServ
         } else {
             propagatedEntitiesList = new ArrayList<>(getPropagationEntityIds(result));
         }
-        return new AlarmOperationResult(result, true, false, oldAlarmSeverity, propagatedEntitiesList);
+        AlarmInfo alarmInfo = getAlarmInfo(newAlarm.getTenantId(), newAlarm);
+        return new AlarmOperationResult(alarmInfo, true, false, oldAlarmSeverity, propagatedEntitiesList);
     }
 
     @Override
@@ -238,7 +247,8 @@ public class BaseAlarmService extends AbstractEntityService implements AlarmServ
                     alarm.setStatus(newStatus);
                     alarm.setAckTs(ackTime);
                     alarm = alarmDao.save(alarm.getTenantId(), alarm);
-                    return new AlarmOperationResult(alarm, true, new ArrayList<>(getPropagationEntityIds(alarm)));
+                    AlarmInfo alarmInfo = getAlarmInfo(tenantId, alarm);
+                    return new AlarmOperationResult(alarmInfo, true, new ArrayList<>(getPropagationEntityIds(alarm)));
                 }
             }
         });
@@ -261,7 +271,46 @@ public class BaseAlarmService extends AbstractEntityService implements AlarmServ
                         alarm.setDetails(details);
                     }
                     alarm = alarmDao.save(alarm.getTenantId(), alarm);
-                    return new AlarmOperationResult(alarm, true, new ArrayList<>(getPropagationEntityIds(alarm)));
+                    AlarmInfo alarmInfo = getAlarmInfo(tenantId, alarm);
+                    return new AlarmOperationResult(alarmInfo, true, new ArrayList<>(getPropagationEntityIds(alarm)));
+                }
+            }
+        });
+    }
+
+    @Override
+    public AlarmOperationResult assignAlarm(TenantId tenantId, AlarmId alarmId, UserId assigneeId, long assignTime) {
+        return getAndUpdate(tenantId, alarmId, new Function<>() {
+            @Nullable
+            @Override
+            public AlarmOperationResult apply(@Nullable Alarm alarm) {
+                if (alarm == null || assigneeId.equals(alarm.getAssigneeId())) {
+                    return new AlarmOperationResult(alarm, false);
+                } else {
+                    alarm.setAssigneeId(assigneeId);
+                    alarm.setAssignTs(assignTime);
+                    alarm = alarmDao.save(alarm.getTenantId(), alarm);
+                    AlarmInfo alarmInfo = getAlarmInfo(tenantId, alarm);
+                    return new AlarmOperationResult(alarmInfo, true, new ArrayList<>(getPropagationEntityIds(alarm)));
+                }
+            }
+        });
+    }
+
+    @Override
+    public AlarmOperationResult unassignAlarm(TenantId tenantId, AlarmId alarmId, long assignTime) {
+        return getAndUpdate(tenantId, alarmId, new Function<>() {
+            @Nullable
+            @Override
+            public AlarmOperationResult apply(@Nullable Alarm alarm) {
+                if (alarm == null || alarm.getAssigneeId() == null) {
+                    return new AlarmOperationResult(alarm, false);
+                } else {
+                    alarm.setAssigneeId(null);
+                    alarm.setAssignTs(assignTime);
+                    alarm = alarmDao.save(alarm.getTenantId(), alarm);
+                    AlarmInfo alarmInfo = getAlarmInfo(tenantId, alarm);
+                    return new AlarmOperationResult(alarmInfo, true, new ArrayList<>(getPropagationEntityIds(alarm)));
                 }
             }
         });
@@ -286,12 +335,7 @@ public class BaseAlarmService extends AbstractEntityService implements AlarmServ
         log.trace("Executing findAlarmInfoByIdAsync [{}]", alarmId);
         validateId(alarmId, "Incorrect alarmId " + alarmId);
         return Futures.transform(alarmDao.findAlarmByIdAsync(tenantId, alarmId.getId()),
-                a -> {
+                a -> getAlarmInfo(tenantId, a), MoreExecutors.directExecutor());
-                    AlarmInfo alarmInfo = new AlarmInfo(a);
-                    alarmInfo.setOriginatorName(
-                            entityService.fetchEntityName(tenantId, alarmInfo.getOriginator()).orElse("N/A"));
-                    return alarmInfo;
-                }, MoreExecutors.directExecutor());
     }
 
     @Override
@@ -317,6 +361,8 @@ public class BaseAlarmService extends AbstractEntityService implements AlarmServ
         for (AlarmInfo alarmInfo : alarms.getData()) {
             alarmInfo.setOriginatorName(
                     entityService.fetchEntityName(tenantId, alarmInfo.getOriginator()).orElse("Deleted"));
+            alarmInfo.setOriginatorLabel(
+                    entityService.fetchEntityLabel(tenantId, alarmInfo.getOriginator()).orElse(null));
             alarmFutures.add(Futures.immediateFuture(alarmInfo));
         }
         return Futures.transform(Futures.successfulAsList(alarmFutures),
@@ -326,7 +372,7 @@ public class BaseAlarmService extends AbstractEntityService implements AlarmServ
 
     @Override
     public AlarmSeverity findHighestAlarmSeverity(TenantId tenantId, EntityId entityId, AlarmSearchStatus alarmSearchStatus,
-                                                  AlarmStatus alarmStatus) {
+                                                  AlarmStatus alarmStatus, String assigneeId) {
         Set<AlarmStatus> statusList = null;
         if (alarmSearchStatus != null) {
             statusList = alarmSearchStatus.getStatuses();
@@ -334,7 +380,7 @@ public class BaseAlarmService extends AbstractEntityService implements AlarmServ
             statusList = Collections.singleton(alarmStatus);
         }
 
-        Set<AlarmSeverity> alarmSeverities = alarmDao.findAlarmSeverities(tenantId, entityId, statusList);
+        Set<AlarmSeverity> alarmSeverities = alarmDao.findAlarmSeverities(tenantId, entityId, statusList, assigneeId);
 
         return alarmSeverities.stream().min(AlarmSeverity::compareTo).orElse(null);
     }
@@ -357,10 +403,14 @@ public class BaseAlarmService extends AbstractEntityService implements AlarmServ
         if (alarm.getAckTs() > existing.getAckTs()) {
             existing.setAckTs(alarm.getAckTs());
         }
+        if (alarm.getAssignTs() > existing.getAssignTs()) {
+            existing.setAssignTs(alarm.getAssignTs());
+        }
         existing.setStatus(alarm.getStatus());
         existing.setSeverity(alarm.getSeverity());
         existing.setDetails(alarm.getDetails());
         existing.setCustomerId(alarm.getCustomerId());
+        existing.setAssigneeId(alarm.getAssigneeId());
         existing.setPropagate(existing.isPropagate() || alarm.isPropagate());
         existing.setPropagateToOwner(existing.isPropagateToOwner() || alarm.isPropagateToOwner());
         existing.setPropagateToTenant(existing.isPropagateToTenant() || alarm.isPropagateToTenant());
@@ -388,7 +438,7 @@ public class BaseAlarmService extends AbstractEntityService implements AlarmServ
     }
 
     private void createEntityAlarmRecord(TenantId tenantId, EntityId entityId, Alarm alarm) {
-        EntityAlarm entityAlarm = new EntityAlarm(tenantId, entityId, alarm.getCreatedTime(), alarm.getType(), alarm.getCustomerId(), alarm.getId());
+        EntityAlarm entityAlarm = new EntityAlarm(tenantId, entityId, alarm.getCreatedTime(), alarm.getType(), alarm.getCustomerId(), null, alarm.getId());
         try {
             alarmDao.createEntityAlarmRecord(entityAlarm);
         } catch (Exception e) {
@@ -408,6 +458,25 @@ public class BaseAlarmService extends AbstractEntityService implements AlarmServ
         return function.apply(entity);
     }
 
+    private AlarmInfo getAlarmInfo(TenantId tenantId, Alarm alarm) {
+        String originatorName;
+        String originatorLabel;
+        String assigneeFirstName = null;
+        String assigneeLastName = null;
+        String assigneeEmail = null;
+
+        originatorName = entityService.fetchEntityName(tenantId, alarm.getOriginator()).orElse("Deleted");
+        originatorLabel = entityService.fetchEntityLabel(tenantId, alarm.getOriginator()).orElse(null);
+
+        if (alarm.getAssigneeId() != null) {
+            User assignedUser = userService.findUserById(tenantId, alarm.getAssigneeId());
+            assigneeFirstName = assignedUser.getFirstName();
+            assigneeLastName = assignedUser.getLastName();
+            assigneeEmail = assignedUser.getEmail();
+        }
+        return new AlarmInfo(alarm, originatorName, originatorLabel, assigneeFirstName, assigneeLastName, assigneeEmail);
+    }
+
     @Override
     public Optional<HasId<?>> findEntity(TenantId tenantId, EntityId entityId) {
         return Optional.ofNullable(findAlarmById(tenantId, new AlarmId(entityId.getId())));

dao/src/main/java/org/thingsboard/server/dao/audit/AuditLogServiceImpl.java

@@ -166,6 +166,8 @@ public class AuditLogServiceImpl implements AuditLogService {
             case UPDATED:
             case ALARM_ACK:
             case ALARM_CLEAR:
+            case ALARM_ASSIGN:
+            case ALARM_UNASSIGN:
             case RELATIONS_DELETED:
             case ASSIGNED_TO_TENANT:
                 if (entity != null) {

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

@@ -20,7 +20,10 @@ import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Service;
 import org.springframework.util.CollectionUtils;
 import org.thingsboard.server.common.data.HasCustomerId;
+import org.thingsboard.server.common.data.HasEmail;
+import org.thingsboard.server.common.data.HasLabel;
 import org.thingsboard.server.common.data.HasName;
+import org.thingsboard.server.common.data.HasTitle;
 import org.thingsboard.server.common.data.id.CustomerId;
 import org.thingsboard.server.common.data.id.EntityId;
 import org.thingsboard.server.common.data.id.HasId;
@@ -89,6 +92,30 @@ public class BaseEntityService extends AbstractEntityService implements EntitySe
         return Optional.empty();
     }
 
+    @Override
+    public Optional<String> fetchEntityLabel(TenantId tenantId, EntityId entityId) {
+        log.trace("Executing fetchEntityLabel [{}]", entityId);
+        EntityDaoService entityDaoService = entityServiceRegistry.getServiceByEntityType(entityId.getEntityType());
+        Optional<HasId<?>> entityOpt = entityDaoService.findEntity(tenantId, entityId);
+        String entityLabel = null;
+        if (entityOpt.isPresent()) {
+            HasId<?> entity = entityOpt.get();
+            if (entity instanceof HasTitle) {
+                entityLabel = ((HasTitle) entity).getTitle();
+            }
+            if (entity instanceof HasLabel && entityLabel == null) {
+                entityLabel = ((HasLabel) entity).getLabel();
+            }
+            if (entity instanceof HasEmail && entityLabel == null) {
+                entityLabel = ((HasEmail) entity).getEmail();
+            }
+            if (entity instanceof HasName && entityLabel == null) {
+                entityLabel = ((HasName) entity).getName();
+            }
+        }
+        return Optional.ofNullable(entityLabel);
+    }
+
     @Override
     public Optional<CustomerId> fetchEntityCustomerId(TenantId tenantId, EntityId entityId) {
         log.trace("Executing fetchEntityCustomerId [{}]", entityId);
@@ -126,7 +153,7 @@ public class BaseEntityService extends AbstractEntityService implements EntitySe
     }
 
     private static void validateRelationQuery(RelationsQueryFilter queryFilter) {
-        if (queryFilter.isMultiRoot() && queryFilter.getMultiRootEntitiesType() ==null){
+        if (queryFilter.isMultiRoot() && queryFilter.getMultiRootEntitiesType() == null) {
             throw new IncorrectParameterException("Multi-root relation query filter should contain 'multiRootEntitiesType'");
         }
         if (queryFilter.isMultiRoot() && CollectionUtils.isEmpty(queryFilter.getMultiRootEntityIds())) {

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

@@ -41,6 +41,7 @@ public class ModelConstants {
     public static final String USER_ID_PROPERTY = "user_id";
     public static final String TENANT_ID_PROPERTY = "tenant_id";
     public static final String CUSTOMER_ID_PROPERTY = "customer_id";
+    public static final String ASSIGNEE_ID_PROPERTY = "assignee_id";
     public static final String DEVICE_ID_PROPERTY = "device_id";
     public static final String TITLE_PROPERTY = "title";
     public static final String ALIAS_PROPERTY = "alias";
@@ -292,13 +293,19 @@ public class ModelConstants {
     public static final String ALARM_DETAILS_PROPERTY = "details";
     public static final String ALARM_ORIGINATOR_ID_PROPERTY = "originator_id";
     public static final String ALARM_ORIGINATOR_NAME_PROPERTY = "originator_name";
+    public static final String ALARM_ORIGINATOR_LABEL_PROPERTY = "originator_label";
     public static final String ALARM_ORIGINATOR_TYPE_PROPERTY = "originator_type";
     public static final String ALARM_SEVERITY_PROPERTY = "severity";
     public static final String ALARM_STATUS_PROPERTY = "status";
+    public static final String ALARM_ASSIGNEE_ID_PROPERTY = "assignee_id";
+    public static final String ALARM_ASSIGNEE_FIRST_NAME_PROPERTY = "assignee_first_name";
+    public static final String ALARM_ASSIGNEE_LAST_NAME_PROPERTY = "assignee_last_name";
+    public static final String ALARM_ASSIGNEE_EMAIL_PROPERTY = "assignee_email";
     public static final String ALARM_START_TS_PROPERTY = "start_ts";
     public static final String ALARM_END_TS_PROPERTY = "end_ts";
     public static final String ALARM_ACK_TS_PROPERTY = "ack_ts";
     public static final String ALARM_CLEAR_TS_PROPERTY = "clear_ts";
+    public static final String ALARM_ASSIGN_TS_PROPERTY = "assign_ts";
     public static final String ALARM_PROPAGATE_PROPERTY = "propagate";
     public static final String ALARM_PROPAGATE_TO_OWNER_PROPERTY = "propagate_to_owner";
     public static final String ALARM_PROPAGATE_TO_TENANT_PROPERTY = "propagate_to_tenant";

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

@@ -20,6 +20,7 @@ import lombok.Data;
 import lombok.EqualsAndHashCode;
 import org.hibernate.annotations.Type;
 import org.hibernate.annotations.TypeDef;
+import org.springframework.data.annotation.Id;
 import org.springframework.util.CollectionUtils;
 import org.thingsboard.server.common.data.EntityType;
 import org.thingsboard.server.common.data.StringUtils;
@@ -30,6 +31,7 @@ import org.thingsboard.server.common.data.id.AlarmId;
 import org.thingsboard.server.common.data.id.CustomerId;
 import org.thingsboard.server.common.data.id.EntityIdFactory;
 import org.thingsboard.server.common.data.id.TenantId;
+import org.thingsboard.server.common.data.id.UserId;
 import org.thingsboard.server.dao.model.BaseEntity;
 import org.thingsboard.server.dao.model.BaseSqlEntity;
 import org.thingsboard.server.dao.model.ModelConstants;
@@ -44,6 +46,8 @@ import java.util.Collections;
 import java.util.UUID;
 
 import static org.thingsboard.server.dao.model.ModelConstants.ALARM_ACK_TS_PROPERTY;
+import static org.thingsboard.server.dao.model.ModelConstants.ALARM_ASSIGNEE_ID_PROPERTY;
+import static org.thingsboard.server.dao.model.ModelConstants.ALARM_ASSIGN_TS_PROPERTY;
 import static org.thingsboard.server.dao.model.ModelConstants.ALARM_CLEAR_TS_PROPERTY;
 import static org.thingsboard.server.dao.model.ModelConstants.ALARM_CUSTOMER_ID_PROPERTY;
 import static org.thingsboard.server.dao.model.ModelConstants.ALARM_END_TS_PROPERTY;
@@ -88,6 +92,10 @@ public abstract class AbstractAlarmEntity<T extends Alarm> extends BaseSqlEntity
     @Column(name = ALARM_STATUS_PROPERTY)
     private AlarmStatus status;
 
+    @Type(type="pg-uuid")
+    @Column(name = ALARM_ASSIGNEE_ID_PROPERTY)
+    private UUID assigneeId;
+
     @Column(name = ALARM_START_TS_PROPERTY)
     private Long startTs;
 
@@ -100,6 +108,9 @@ public abstract class AbstractAlarmEntity<T extends Alarm> extends BaseSqlEntity
     @Column(name = ALARM_CLEAR_TS_PROPERTY)
     private Long clearTs;
 
+    @Column(name = ALARM_ASSIGN_TS_PROPERTY)
+    private Long assignTs;
+
     @Type(type = "json")
     @Column(name = ModelConstants.ASSET_ADDITIONAL_INFO_PROPERTY)
     private JsonNode details;
@@ -137,6 +148,9 @@ public abstract class AbstractAlarmEntity<T extends Alarm> extends BaseSqlEntity
         this.type = alarm.getType();
         this.severity = alarm.getSeverity();
         this.status = alarm.getStatus();
+        if (alarm.getAssigneeId() != null) {
+            this.assigneeId = alarm.getAssigneeId().getId();
+        }
         this.propagate = alarm.isPropagate();
         this.propagateToOwner = alarm.isPropagateToOwner();
         this.propagateToTenant = alarm.isPropagateToTenant();
@@ -144,11 +158,12 @@ public abstract class AbstractAlarmEntity<T extends Alarm> extends BaseSqlEntity
         this.endTs = alarm.getEndTs();
         this.ackTs = alarm.getAckTs();
         this.clearTs = alarm.getClearTs();
+        this.assignTs = alarm.getAssignTs();
         this.details = alarm.getDetails();
         if (!CollectionUtils.isEmpty(alarm.getPropagateRelationTypes())) {
             this.propagateRelationTypes = String.join(",", alarm.getPropagateRelationTypes());
         } else {
-            this.propagateRelationTypes = null;
+            this.propagateRelationTypes = "";
         }
     }
 
@@ -163,6 +178,7 @@ public abstract class AbstractAlarmEntity<T extends Alarm> extends BaseSqlEntity
         this.type = alarmEntity.getType();
         this.severity = alarmEntity.getSeverity();
         this.status = alarmEntity.getStatus();
+        this.assigneeId = alarmEntity.getAssigneeId();
         this.propagate = alarmEntity.getPropagate();
         this.propagateToOwner = alarmEntity.getPropagateToOwner();
         this.propagateToTenant = alarmEntity.getPropagateToTenant();
@@ -170,6 +186,7 @@ public abstract class AbstractAlarmEntity<T extends Alarm> extends BaseSqlEntity
         this.endTs = alarmEntity.getEndTs();
         this.ackTs = alarmEntity.getAckTs();
         this.clearTs = alarmEntity.getClearTs();
+        this.assignTs = alarmEntity.getAssignTs();
         this.details = alarmEntity.getDetails();
         this.propagateRelationTypes = alarmEntity.getPropagateRelationTypes();
     }
@@ -187,6 +204,9 @@ public abstract class AbstractAlarmEntity<T extends Alarm> extends BaseSqlEntity
         alarm.setType(type);
         alarm.setSeverity(severity);
         alarm.setStatus(status);
+        if (assigneeId != null) {
+            alarm.setAssigneeId(new UserId(assigneeId));
+        }
         alarm.setPropagate(propagate);
         alarm.setPropagateToOwner(propagateToOwner);
         alarm.setPropagateToTenant(propagateToTenant);
@@ -194,6 +214,7 @@ public abstract class AbstractAlarmEntity<T extends Alarm> extends BaseSqlEntity
         alarm.setEndTs(endTs);
         alarm.setAckTs(ackTs);
         alarm.setClearTs(clearTs);
+        alarm.setAssignTs(assignTs);
         alarm.setDetails(details);
         if (!StringUtils.isEmpty(propagateRelationTypes)) {
             alarm.setPropagateRelationTypes(Arrays.asList(propagateRelationTypes.split(",")));

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

@@ -24,17 +24,33 @@ import org.thingsboard.server.common.data.alarm.AlarmInfo;
 public class AlarmInfoEntity extends AbstractAlarmEntity<AlarmInfo> {
 
     private String originatorName;
+    private String originatorLabel;
+
+    private String assigneeFirstName;
+    private String assigneeLastName;
+    private String assigneeEmail;
 
     public AlarmInfoEntity() {
         super();
     }
 
-    public AlarmInfoEntity(AlarmEntity alarmEntity) {
+    public AlarmInfoEntity(AlarmEntity alarmEntity, String assigneeFirstName,
+                           String assigneeLastName, String assigneeEmail) {
         super(alarmEntity);
+        this.assigneeFirstName = assigneeFirstName;
+        this.assigneeLastName = assigneeLastName;
+        this.assigneeEmail = assigneeEmail;
     }
 
     @Override
     public AlarmInfo toData() {
-        return new AlarmInfo(super.toAlarm(), this.originatorName);
+        AlarmInfo alarmInfo = new AlarmInfo(super.toAlarm());
+        alarmInfo.setOriginatorName(originatorName);
+        alarmInfo.setOriginatorLabel(originatorLabel);
+
+        alarmInfo.setAssigneeFirstName(assigneeFirstName);
+        alarmInfo.setAssigneeLastName(assigneeLastName);
+        alarmInfo.setAssigneeEmail(assigneeEmail);
+        return alarmInfo;
     }
 }

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

@@ -21,6 +21,7 @@ import org.thingsboard.server.common.data.id.AlarmId;
 import org.thingsboard.server.common.data.id.CustomerId;
 import org.thingsboard.server.common.data.id.EntityIdFactory;
 import org.thingsboard.server.common.data.id.TenantId;
+import org.thingsboard.server.common.data.id.UserId;
 import org.thingsboard.server.dao.model.ToData;
 
 import javax.persistence.Column;
@@ -30,6 +31,7 @@ import javax.persistence.IdClass;
 import javax.persistence.Table;
 import java.util.UUID;
 
+import static org.thingsboard.server.dao.model.ModelConstants.ASSIGNEE_ID_PROPERTY;
 import static org.thingsboard.server.dao.model.ModelConstants.CREATED_TIME_PROPERTY;
 import static org.thingsboard.server.dao.model.ModelConstants.CUSTOMER_ID_PROPERTY;
 import static org.thingsboard.server.dao.model.ModelConstants.ENTITY_ALARM_COLUMN_FAMILY_NAME;

dao/src/main/java/org/thingsboard/server/dao/sql/alarm/AlarmRepository.java

@@ -39,8 +39,10 @@ public interface AlarmRepository extends JpaRepository<AlarmEntity, UUID> {
                                                     @Param("alarmType") String alarmType,
                                                     Pageable pageable);
 
-    @Query(value = "SELECT new org.thingsboard.server.dao.model.sql.AlarmInfoEntity(a) FROM AlarmEntity a " +
+    @Query(value = "SELECT new org.thingsboard.server.dao.model.sql.AlarmInfoEntity(a, tbu.firstName, tbu.lastName, tbu.email) " +
+            "FROM AlarmEntity a " +
             "LEFT JOIN EntityAlarmEntity ea ON a.id = ea.alarmId " +
+            "LEFT JOIN UserEntity tbu ON tbu.id = a.assigneeId " +
             "WHERE a.tenantId = :tenantId " +
             "AND ea.tenantId = :tenantId " +
             "AND ea.entityId = :affectedEntityId " +
@@ -48,6 +50,7 @@ public interface AlarmRepository extends JpaRepository<AlarmEntity, UUID> {
             "AND (:startTime IS NULL OR (a.createdTime >= :startTime AND ea.createdTime >= :startTime)) " +
             "AND (:endTime IS NULL OR (a.createdTime <= :endTime AND ea.createdTime <= :endTime)) " +
             "AND ((:alarmStatuses) IS NULL OR a.status in (:alarmStatuses)) " +
+            "AND (:assigneeId IS NULL OR a.assigneeId = uuid(:assigneeId)) " +
             "AND (LOWER(a.type) LIKE LOWER(CONCAT('%', :searchText, '%')) " +
             "  OR LOWER(a.severity) LIKE LOWER(CONCAT('%', :searchText, '%')) " +
             "  OR LOWER(a.status) LIKE LOWER(CONCAT('%', :searchText, '%'))) "
@@ -63,6 +66,7 @@ public interface AlarmRepository extends JpaRepository<AlarmEntity, UUID> {
                     "AND (:startTime IS NULL OR (a.createdTime >= :startTime AND ea.createdTime >= :startTime)) " +
                     "AND (:endTime IS NULL OR (a.createdTime <= :endTime AND ea.createdTime <= :endTime)) " +
                     "AND ((:alarmStatuses) IS NULL OR a.status in (:alarmStatuses)) " +
+                    "AND (:assigneeId IS NULL OR a.assigneeId = uuid(:assigneeId)) " +
                     "AND (LOWER(a.type) LIKE LOWER(CONCAT('%', :searchText, '%')) " +
                     "  OR LOWER(a.severity) LIKE LOWER(CONCAT('%', :searchText, '%')) " +
                     "  OR LOWER(a.status) LIKE LOWER(CONCAT('%', :searchText, '%'))) ")
@@ -72,14 +76,18 @@ public interface AlarmRepository extends JpaRepository<AlarmEntity, UUID> {
                                      @Param("startTime") Long startTime,
                                      @Param("endTime") Long endTime,
                                      @Param("alarmStatuses") Set<AlarmStatus> alarmStatuses,
+                                     @Param("assigneeId") String assigneeId,
                                      @Param("searchText") String searchText,
                                      Pageable pageable);
 
-    @Query(value = "SELECT new org.thingsboard.server.dao.model.sql.AlarmInfoEntity(a) FROM AlarmEntity a " +
+    @Query(value = "SELECT new org.thingsboard.server.dao.model.sql.AlarmInfoEntity(a, tbu.firstName, tbu.lastName, tbu.email) " +
+            "FROM AlarmEntity a " +
+            "LEFT JOIN UserEntity tbu ON tbu.id = a.assigneeId " +
             "WHERE a.tenantId = :tenantId " +
             "AND (:startTime IS NULL OR a.createdTime >= :startTime) " +
             "AND (:endTime IS NULL OR a.createdTime <= :endTime) " +
             "AND ((:alarmStatuses) IS NULL OR a.status in (:alarmStatuses)) " +
+            "AND (:assigneeId IS NULL OR a.assigneeId = uuid(:assigneeId)) " +
             "AND (LOWER(a.type) LIKE LOWER(CONCAT('%', :searchText, '%')) " +
             "  OR LOWER(a.severity) LIKE LOWER(CONCAT('%', :searchText, '%')) " +
             "  OR LOWER(a.status) LIKE LOWER(CONCAT('%', :searchText, '%'))) ",
@@ -90,6 +98,7 @@ public interface AlarmRepository extends JpaRepository<AlarmEntity, UUID> {
                     "AND (:startTime IS NULL OR a.createdTime >= :startTime) " +
                     "AND (:endTime IS NULL OR a.createdTime <= :endTime) " +
                     "AND ((:alarmStatuses) IS NULL OR a.status in (:alarmStatuses)) " +
+                    "AND (:assigneeId IS NULL OR a.assigneeId = uuid(:assigneeId)) " +
                     "AND (LOWER(a.type) LIKE LOWER(CONCAT('%', :searchText, '%')) " +
                     "  OR LOWER(a.severity) LIKE LOWER(CONCAT('%', :searchText, '%')) " +
                     "  OR LOWER(a.status) LIKE LOWER(CONCAT('%', :searchText, '%'))) ")
@@ -97,14 +106,18 @@ public interface AlarmRepository extends JpaRepository<AlarmEntity, UUID> {
                                         @Param("startTime") Long startTime,
                                         @Param("endTime") Long endTime,
                                         @Param("alarmStatuses") Set<AlarmStatus> alarmStatuses,
+                                        @Param("assigneeId") String assigneeId,
                                         @Param("searchText") String searchText,
                                         Pageable pageable);
 
-    @Query(value = "SELECT new org.thingsboard.server.dao.model.sql.AlarmInfoEntity(a) FROM AlarmEntity a " +
+    @Query(value = "SELECT new org.thingsboard.server.dao.model.sql.AlarmInfoEntity(a, tbu.firstName, tbu.lastName, tbu.email) " +
+            "FROM AlarmEntity a " +
+            "LEFT JOIN UserEntity tbu ON tbu.id = a.assigneeId " +
             "WHERE a.tenantId = :tenantId AND a.customerId = :customerId " +
             "AND (:startTime IS NULL OR a.createdTime >= :startTime) " +
             "AND (:endTime IS NULL OR a.createdTime <= :endTime) " +
             "AND ((:alarmStatuses) IS NULL OR a.status in (:alarmStatuses)) " +
+            "AND (:assigneeId IS NULL OR a.assigneeId = uuid(:assigneeId)) " +
             "AND (LOWER(a.type) LIKE LOWER(CONCAT('%', :searchText, '%')) " +
             "  OR LOWER(a.severity) LIKE LOWER(CONCAT('%', :searchText, '%')) " +
             "  OR LOWER(a.status) LIKE LOWER(CONCAT('%', :searchText, '%'))) "
@@ -116,6 +129,7 @@ public interface AlarmRepository extends JpaRepository<AlarmEntity, UUID> {
                     "AND (:startTime IS NULL OR a.createdTime >= :startTime) " +
                     "AND (:endTime IS NULL OR a.createdTime <= :endTime) " +
                     "AND ((:alarmStatuses) IS NULL OR a.status in (:alarmStatuses)) " +
+                    "AND (:assigneeId IS NULL OR a.assigneeId = uuid(:assigneeId)) " +
                     "AND (LOWER(a.type) LIKE LOWER(CONCAT('%', :searchText, '%')) " +
                     "  OR LOWER(a.severity) LIKE LOWER(CONCAT('%', :searchText, '%')) " +
                     "  OR LOWER(a.status) LIKE LOWER(CONCAT('%', :searchText, '%'))) ")
@@ -124,6 +138,7 @@ public interface AlarmRepository extends JpaRepository<AlarmEntity, UUID> {
                                              @Param("startTime") Long startTime,
                                              @Param("endTime") Long endTime,
                                              @Param("alarmStatuses") Set<AlarmStatus> alarmStatuses,
+                                             @Param("assigneeId") String assigneeId,
                                              @Param("searchText") String searchText,
                                              Pageable pageable);
 
@@ -133,11 +148,13 @@ public interface AlarmRepository extends JpaRepository<AlarmEntity, UUID> {
             "AND ea.tenantId = :tenantId " +
             "AND ea.entityId = :affectedEntityId " +
             "AND ea.entityType = :affectedEntityType " +
-            "AND ((:alarmStatuses) IS NULL OR a.status in (:alarmStatuses))")
+            "AND ((:alarmStatuses) IS NULL OR a.status in (:alarmStatuses)) " +
+            "AND (:assigneeId IS NULL OR a.assigneeId = uuid(:assigneeId))")
     Set<AlarmSeverity> findAlarmSeverities(@Param("tenantId") UUID tenantId,
                                            @Param("affectedEntityId") UUID affectedEntityId,
                                            @Param("affectedEntityType") String affectedEntityType,
-                                           @Param("alarmStatuses") Set<AlarmStatus> alarmStatuses);
+                                           @Param("alarmStatuses") Set<AlarmStatus> alarmStatuses,
+                                           @Param("assigneeId") String assigneeId);
 
     @Query("SELECT a.id FROM AlarmEntity a WHERE a.tenantId = :tenantId AND a.createdTime < :time AND a.endTs < :time")
     Page<UUID> findAlarmsIdsByEndTsBeforeAndTenantId(@Param("time") Long time, @Param("tenantId") UUID tenantId, Pageable pageable);

dao/src/main/java/org/thingsboard/server/dao/sql/alarm/JpaAlarmDao.java

@@ -17,6 +17,8 @@ package org.thingsboard.server.dao.sql.alarm;
 
 import com.google.common.util.concurrent.ListenableFuture;
 import lombok.extern.slf4j.Slf4j;
+import org.hibernate.dialect.Dialect;
+import org.hibernate.type.UUIDCharType;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.data.domain.PageRequest;
 import org.springframework.data.jpa.repository.JpaRepository;
@@ -32,6 +34,7 @@ import org.thingsboard.server.common.data.id.AlarmId;
 import org.thingsboard.server.common.data.id.CustomerId;
 import org.thingsboard.server.common.data.id.EntityId;
 import org.thingsboard.server.common.data.id.TenantId;
+import org.thingsboard.server.common.data.id.UserId;
 import org.thingsboard.server.common.data.page.PageData;
 import org.thingsboard.server.common.data.page.PageLink;
 import org.thingsboard.server.common.data.query.AlarmData;
@@ -112,6 +115,10 @@ public class JpaAlarmDao extends JpaAbstractDao<AlarmEntity, Alarm> implements A
         } else if (query.getStatus() != null) {
             statusSet = Collections.singleton(query.getStatus());
         }
+        String assigneeId = null;
+        if (query.getAssigneeId() != null) {
+            assigneeId = query.getAssigneeId().toString();
+        }
         if (affectedEntity != null) {
             return DaoUtil.toPageData(
                     alarmRepository.findAlarms(
@@ -121,6 +128,7 @@ public class JpaAlarmDao extends JpaAbstractDao<AlarmEntity, Alarm> implements A
                             query.getPageLink().getStartTime(),
                             query.getPageLink().getEndTime(),
                             statusSet,
+                            assigneeId,
                             Objects.toString(query.getPageLink().getTextSearch(), ""),
                             DaoUtil.toPageable(query.getPageLink())
                     )
@@ -132,6 +140,7 @@ public class JpaAlarmDao extends JpaAbstractDao<AlarmEntity, Alarm> implements A
                             query.getPageLink().getStartTime(),
                             query.getPageLink().getEndTime(),
                             statusSet,
+                            assigneeId,
                             Objects.toString(query.getPageLink().getTextSearch(), ""),
                             DaoUtil.toPageable(query.getPageLink())
                     )
@@ -148,6 +157,10 @@ public class JpaAlarmDao extends JpaAbstractDao<AlarmEntity, Alarm> implements A
         } else if (query.getStatus() != null) {
             statusSet = Collections.singleton(query.getStatus());
         }
+        String assigneeId = null;
+        if (query.getAssigneeId() != null) {
+            assigneeId = query.getAssigneeId().toString();
+        }
         return DaoUtil.toPageData(
                 alarmRepository.findCustomerAlarms(
                         tenantId.getId(),
@@ -155,6 +168,7 @@ public class JpaAlarmDao extends JpaAbstractDao<AlarmEntity, Alarm> implements A
                         query.getPageLink().getStartTime(),
                         query.getPageLink().getEndTime(),
                         statusSet,
+                        assigneeId,
                         Objects.toString(query.getPageLink().getTextSearch(), ""),
                         DaoUtil.toPageable(query.getPageLink())
                 )
@@ -167,8 +181,8 @@ public class JpaAlarmDao extends JpaAbstractDao<AlarmEntity, Alarm> implements A
     }
 
     @Override
-    public Set<AlarmSeverity> findAlarmSeverities(TenantId tenantId, EntityId entityId, Set<AlarmStatus> statuses) {
+    public Set<AlarmSeverity> findAlarmSeverities(TenantId tenantId, EntityId entityId, Set<AlarmStatus> statuses, String assigneeId) {
-        return alarmRepository.findAlarmSeverities(tenantId.getId(), entityId.getId(), entityId.getEntityType().name(), statuses);
+        return alarmRepository.findAlarmSeverities(tenantId.getId(), entityId.getId(), entityId.getEntityType().name(), statuses, assigneeId);
     }
 
     @Override

dao/src/main/java/org/thingsboard/server/dao/sql/query/AlarmDataAdapter.java

@@ -28,6 +28,7 @@ import org.thingsboard.server.common.data.id.CustomerId;
 import org.thingsboard.server.common.data.id.EntityId;
 import org.thingsboard.server.common.data.id.EntityIdFactory;
 import org.thingsboard.server.common.data.id.TenantId;
+import org.thingsboard.server.common.data.id.UserId;
 import org.thingsboard.server.common.data.page.PageData;
 import org.thingsboard.server.common.data.query.AlarmData;
 import org.thingsboard.server.common.data.query.EntityDataPageLink;
@@ -68,6 +69,7 @@ public class AlarmDataAdapter {
         alarm.setCreatedTime((long) row.get(ModelConstants.CREATED_TIME_PROPERTY));
         alarm.setAckTs((long) row.get(ModelConstants.ALARM_ACK_TS_PROPERTY));
         alarm.setClearTs((long) row.get(ModelConstants.ALARM_CLEAR_TS_PROPERTY));
+        alarm.setAssignTs((long) row.get(ModelConstants.ALARM_ASSIGN_TS_PROPERTY));
         alarm.setStartTs((long) row.get(ModelConstants.ALARM_START_TS_PROPERTY));
         alarm.setEndTs((long) row.get(ModelConstants.ALARM_END_TS_PROPERTY));
         Object additionalInfo = row.get(ModelConstants.ADDITIONAL_INFO_PROPERTY);
@@ -81,6 +83,16 @@ public class AlarmDataAdapter {
         EntityType originatorType = EntityType.values()[(int) row.get(ModelConstants.ALARM_ORIGINATOR_TYPE_PROPERTY)];
         UUID originatorId = (UUID) row.get(ModelConstants.ALARM_ORIGINATOR_ID_PROPERTY);
         alarm.setOriginator(EntityIdFactory.getByTypeAndUuid(originatorType, originatorId));
+        Object assigneeIdObj = row.get(ModelConstants.ASSIGNEE_ID_PROPERTY);
+        String assigneeFirstName = null;
+        String assigneeLastName = null;
+        String assigneeEmail = null;
+        if (assigneeIdObj != null) {
+            alarm.setAssigneeId(new UserId((UUID) row.get(ModelConstants.ALARM_ASSIGNEE_ID_PROPERTY)));
+            assigneeFirstName = (String) row.get(ModelConstants.ALARM_ASSIGNEE_FIRST_NAME_PROPERTY);
+            assigneeLastName = (String) row.get(ModelConstants.ALARM_ASSIGNEE_LAST_NAME_PROPERTY);
+            assigneeEmail = (String) row.get(ModelConstants.ALARM_ASSIGNEE_EMAIL_PROPERTY);
+        }
         alarm.setPropagate((boolean) row.get(ModelConstants.ALARM_PROPAGATE_PROPERTY));
         alarm.setPropagateToOwner((boolean) row.get(ModelConstants.ALARM_PROPAGATE_TO_OWNER_PROPERTY));
         alarm.setPropagateToTenant((boolean) row.get(ModelConstants.ALARM_PROPAGATE_TO_TENANT_PROPERTY));
@@ -105,7 +117,17 @@ public class AlarmDataAdapter {
         EntityId entityId = entityIdMap.get(entityUuid);
         Object originatorNameObj = row.get(ModelConstants.ALARM_ORIGINATOR_NAME_PROPERTY);
         String originatorName = originatorNameObj != null ? originatorNameObj.toString() : null;
-        return new AlarmData(alarm, originatorName, entityId);
+        Object originatorLabelObj = row.get(ModelConstants.ALARM_ORIGINATOR_LABEL_PROPERTY);
+        String originatorLabel = originatorLabelObj != null ? originatorLabelObj.toString() : null;
+
+        AlarmData alarmData = new AlarmData(alarm, entityId);
+        alarmData.setOriginatorName(originatorName);
+        alarmData.setOriginatorLabel(originatorLabel);
+        alarmData.setAssigneeFirstName(assigneeFirstName);
+        alarmData.setAssigneeLastName(assigneeLastName);
+        alarmData.setAssigneeEmail(assigneeEmail);
+
+        return alarmData;
     }
 
 }

dao/src/main/java/org/thingsboard/server/dao/sql/query/DefaultAlarmQueryRepository.java

@@ -57,6 +57,7 @@ public class DefaultAlarmQueryRepository implements AlarmQueryRepository {
         alarmFieldColumnMap.put("ackTime", ModelConstants.ALARM_ACK_TS_PROPERTY);
         alarmFieldColumnMap.put("clearTs", ModelConstants.ALARM_CLEAR_TS_PROPERTY);
         alarmFieldColumnMap.put("clearTime", ModelConstants.ALARM_CLEAR_TS_PROPERTY);
+        alarmFieldColumnMap.put("assignTime", ModelConstants.ALARM_ASSIGN_TS_PROPERTY);
         alarmFieldColumnMap.put("details", ModelConstants.ADDITIONAL_INFO_PROPERTY);
         alarmFieldColumnMap.put("endTs", ModelConstants.ALARM_END_TS_PROPERTY);
         alarmFieldColumnMap.put("endTime", ModelConstants.ALARM_END_TS_PROPERTY);
@@ -67,7 +68,12 @@ public class DefaultAlarmQueryRepository implements AlarmQueryRepository {
         alarmFieldColumnMap.put("severity", ModelConstants.ALARM_SEVERITY_PROPERTY);
         alarmFieldColumnMap.put("originatorId", ModelConstants.ALARM_ORIGINATOR_ID_PROPERTY);
         alarmFieldColumnMap.put("originatorType", ModelConstants.ALARM_ORIGINATOR_TYPE_PROPERTY);
-        alarmFieldColumnMap.put("originator", "originator_name");
+        alarmFieldColumnMap.put("assigneeId", ModelConstants.ALARM_ASSIGNEE_ID_PROPERTY);
+        alarmFieldColumnMap.put("originator", ModelConstants.ALARM_ORIGINATOR_NAME_PROPERTY);
+        alarmFieldColumnMap.put("originatorLabel", ModelConstants.ALARM_ORIGINATOR_LABEL_PROPERTY);
+        alarmFieldColumnMap.put("assigneeFirstName", ModelConstants.ALARM_ASSIGNEE_FIRST_NAME_PROPERTY);
+        alarmFieldColumnMap.put("assigneeLastName", ModelConstants.ALARM_ASSIGNEE_LAST_NAME_PROPERTY);
+        alarmFieldColumnMap.put("assigneeEmail", ModelConstants.ALARM_ASSIGNEE_EMAIL_PROPERTY);
     }
 
     private static final String SELECT_ORIGINATOR_NAME = " COALESCE(CASE" +
@@ -85,12 +91,47 @@ public class DefaultAlarmQueryRepository implements AlarmQueryRepository {
             " THEN (select name from device where id = a.originator_id)" +
             " WHEN a.originator_type = " + EntityType.ENTITY_VIEW.ordinal() +
             " THEN (select name from entity_view where id = a.originator_id)" +
-            " END, 'Deleted') as originator_name";
+            " WHEN a.originator_type = " + EntityType.DEVICE_PROFILE.ordinal() +
+            " THEN (select name from device_profile where id = a.originator_id)" +
+            " WHEN a.originator_type = " + EntityType.ASSET_PROFILE.ordinal() +
+            " THEN (select name from asset_profile where id = a.originator_id)" +
+            " WHEN a.originator_type = " + EntityType.EDGE.ordinal() +
+            " THEN (select name from edge where id = a.originator_id)" +
+            " END, 'Deleted') as " + ModelConstants.ALARM_ORIGINATOR_NAME_PROPERTY;
+
+    private static final String SELECT_ORIGINATOR_LABEL = " COALESCE(CASE" +
+            " WHEN a.originator_type = " + EntityType.TENANT.ordinal() +
+            " THEN (select title from tenant where id = a.originator_id)" +
+            " WHEN a.originator_type = " + EntityType.CUSTOMER.ordinal() +
+            " THEN (select COALESCE(title, email) from customer where id = a.originator_id)" +
+            " WHEN a.originator_type = " + EntityType.USER.ordinal() +
+            " THEN (select email from tb_user where id = a.originator_id)" +
+            " WHEN a.originator_type = " + EntityType.DASHBOARD.ordinal() +
+            " THEN (select title from dashboard where id = a.originator_id)" +
+            " WHEN a.originator_type = " + EntityType.ASSET.ordinal() +
+            " THEN (select COALESCE(label, name) from asset where id = a.originator_id)" +
+            " WHEN a.originator_type = " + EntityType.DEVICE.ordinal() +
+            " THEN (select COALESCE(label, name) from device where id = a.originator_id)" +
+            " WHEN a.originator_type = " + EntityType.ENTITY_VIEW.ordinal() +
+            " THEN (select name from entity_view where id = a.originator_id)" +
+            " WHEN a.originator_type = " + EntityType.DEVICE_PROFILE.ordinal() +
+            " THEN (select name from device_profile where id = a.originator_id)" +
+            " WHEN a.originator_type = " + EntityType.ASSET_PROFILE.ordinal() +
+            " THEN (select name from asset_profile where id = a.originator_id)" +
+            " WHEN a.originator_type = " + EntityType.EDGE.ordinal() +
+            " THEN (select COALESCE(label, name) from edge where id = a.originator_id)" +
+            " END, 'Deleted') as " + ModelConstants.ALARM_ORIGINATOR_LABEL_PROPERTY;
+
+    private static final String SELECT_ASSIGNEE_INFO = " tbu.first_name as assignee_first_name," +
+            " tbu.last_name as assignee_last_name," +
+            " tbu.email as assignee_email";
 
     private static final String FIELDS_SELECTION = "select a.id as id," +
             " a.created_time as created_time," +
             " a.ack_ts as ack_ts," +
             " a.clear_ts as clear_ts," +
+            " a.assign_ts as assign_ts," +
+            " a.assignee_id as assignee_id," +
             " a.additional_info as additional_info," +
             " a.end_ts as end_ts," +
             " a.originator_id as originator_id," +
@@ -104,9 +145,13 @@ public class DefaultAlarmQueryRepository implements AlarmQueryRepository {
             " a.tenant_id as tenant_id, " +
             " a.customer_id as customer_id, " +
             " a.propagate_relation_types as propagate_relation_types, " +
-            " a.type as type," + SELECT_ORIGINATOR_NAME + ", ";
+            " a.type as type, " +
+            SELECT_ORIGINATOR_NAME + ", " +
+            SELECT_ORIGINATOR_LABEL + ", " +
+            SELECT_ASSIGNEE_INFO + ", ";
 
-    private static final String JOIN_ENTITY_ALARMS = "inner join entity_alarm ea on a.id = ea.alarm_id";
+    private static final String JOIN_ENTITY_ALARMS = "inner join entity_alarm ea on a.id = ea.alarm_id ";
+    private static final String LEFT_JOIN_TB_USERS = "left join tb_user tbu on a.assignee_id = tbu.id ";
 
     protected final NamedParameterJdbcTemplate jdbcTemplate;
     private final TransactionTemplate transactionTemplate;
@@ -139,6 +184,7 @@ public class DefaultAlarmQueryRepository implements AlarmQueryRepository {
             } else {
                 selectPart.append(" a.originator_id as entity_id ");
             }
+            fromPart.append(LEFT_JOIN_TB_USERS);
             EntityDataSortOrder sortOrder = pageLink.getSortOrder();
             String textSearchQuery = buildTextSearchQuery(ctx, query.getAlarmFields(), pageLink.getTextSearch());
             if (sortOrder != null && sortOrder.getKey().getType().equals(EntityKeyType.ALARM_FIELD)) {

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

@@ -52,7 +52,9 @@ CREATE TABLE IF NOT EXISTS alarm (
     propagate boolean,
     severity varchar(255),
     start_ts bigint,
+    assign_ts bigint,
     status varchar(255),
+    assignee_id uuid,
     tenant_id uuid,
     customer_id uuid,
     propagate_relation_types varchar,

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

@@ -60,7 +60,7 @@ public abstract class BaseAlarmCommentServiceTest extends AbstractServiceTest {
                 .type(TEST_ALARM)
                 .severity(AlarmSeverity.CRITICAL).status(AlarmStatus.ACTIVE_UNACK)
                 .startTs(System.currentTimeMillis()).build();
-        alarm = alarmService.createOrUpdateAlarm(alarm).getAlarm();
+        alarm = new Alarm(alarmService.createOrUpdateAlarm(alarm).getAlarmInfo());
 
         user = new User();
         user.setAuthority(Authority.TENANT_ADMIN);

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

@@ -20,9 +20,11 @@ import org.junit.After;
 import org.junit.Assert;
 import org.junit.Before;
 import org.junit.Test;
+import org.thingsboard.common.util.JacksonUtil;
 import org.thingsboard.server.common.data.Customer;
 import org.thingsboard.server.common.data.Device;
 import org.thingsboard.server.common.data.Tenant;
+import org.thingsboard.server.common.data.User;
 import org.thingsboard.server.common.data.alarm.Alarm;
 import org.thingsboard.server.common.data.alarm.AlarmInfo;
 import org.thingsboard.server.common.data.alarm.AlarmQuery;
@@ -31,7 +33,6 @@ import org.thingsboard.server.common.data.alarm.AlarmSeverity;
 import org.thingsboard.server.common.data.alarm.AlarmStatus;
 import org.thingsboard.server.common.data.asset.Asset;
 import org.thingsboard.server.common.data.id.AssetId;
-import org.thingsboard.server.common.data.id.CustomerId;
 import org.thingsboard.server.common.data.id.TenantId;
 import org.thingsboard.server.common.data.page.PageData;
 import org.thingsboard.server.common.data.page.SortOrder;
@@ -45,8 +46,8 @@ import org.thingsboard.server.common.data.query.EntityKey;
 import org.thingsboard.server.common.data.query.EntityKeyType;
 import org.thingsboard.server.common.data.relation.EntityRelation;
 import org.thingsboard.server.common.data.relation.RelationTypeGroup;
+import org.thingsboard.server.common.data.security.Authority;
 import org.thingsboard.server.dao.alarm.AlarmOperationResult;
-import org.thingsboard.common.util.JacksonUtil;
 
 import java.util.Arrays;
 import java.util.Collections;
@@ -56,6 +57,11 @@ import java.util.concurrent.ExecutionException;
 public abstract class BaseAlarmServiceTest extends AbstractServiceTest {
 
     public static final String TEST_ALARM = "TEST_ALARM";
+
+    private static final String TEST_TENANT_EMAIL = "testtenant@thingsboard.org";
+    private static final String TEST_TENANT_FIRST_NAME = "testtenantfirstname";
+    private static final String TEST_TENANT_LAST_NAME = "testtenantlastname";
+
     private TenantId tenantId;
 
     @Before
@@ -89,7 +95,7 @@ public abstract class BaseAlarmServiceTest extends AbstractServiceTest {
                 .startTs(ts).build();
 
         AlarmOperationResult result = alarmService.createOrUpdateAlarm(alarm);
-        Alarm created = result.getAlarm();
+        Alarm created = new Alarm(result.getAlarmInfo());
 
         Assert.assertNotNull(created);
         Assert.assertNotNull(created.getId());
@@ -128,7 +134,7 @@ public abstract class BaseAlarmServiceTest extends AbstractServiceTest {
                 .startTs(ts).build();
 
         AlarmOperationResult result = alarmService.createOrUpdateAlarm(alarm);
-        Alarm created = result.getAlarm();
+        Alarm created = new Alarm(result.getAlarmInfo());
 
         // Check child relation
         PageData<AlarmInfo> alarms = alarmService.findAlarms(tenantId, AlarmQuery.builder()
@@ -139,7 +145,7 @@ public abstract class BaseAlarmServiceTest extends AbstractServiceTest {
                 ).build()).get();
         Assert.assertNotNull(alarms.getData());
         Assert.assertEquals(1, alarms.getData().size());
-        Assert.assertEquals(created, alarms.getData().get(0));
+        Assert.assertEquals(created, new Alarm(alarms.getData().get(0)));
 
         // Check parent relation
         alarms = alarmService.findAlarms(tenantId, AlarmQuery.builder()
@@ -153,7 +159,7 @@ public abstract class BaseAlarmServiceTest extends AbstractServiceTest {
 
         created.setPropagate(true);
         result = alarmService.createOrUpdateAlarm(created);
-        created = result.getAlarm();
+        created = new Alarm(result.getAlarmInfo());
 
         // Check child relation
         alarms = alarmService.findAlarms(tenantId, AlarmQuery.builder()
@@ -164,7 +170,7 @@ public abstract class BaseAlarmServiceTest extends AbstractServiceTest {
                 ).build()).get();
         Assert.assertNotNull(alarms.getData());
         Assert.assertEquals(1, alarms.getData().size());
-        Assert.assertEquals(created, alarms.getData().get(0));
+        Assert.assertEquals(created, new Alarm(alarms.getData().get(0)));
 
         // Check parent relation
         alarms = alarmService.findAlarms(tenantId, AlarmQuery.builder()
@@ -175,7 +181,7 @@ public abstract class BaseAlarmServiceTest extends AbstractServiceTest {
                 ).build()).get();
         Assert.assertNotNull(alarms.getData());
         Assert.assertEquals(1, alarms.getData().size());
-        Assert.assertEquals(created, alarms.getData().get(0));
+        Assert.assertEquals(created, new Alarm(alarms.getData().get(0)));
 
         alarmService.ackAlarm(tenantId, created.getId(), System.currentTimeMillis()).get();
         created = alarmService.findAlarmByIdAsync(tenantId, created.getId()).get();
@@ -188,7 +194,7 @@ public abstract class BaseAlarmServiceTest extends AbstractServiceTest {
                 ).build()).get();
         Assert.assertNotNull(alarms.getData());
         Assert.assertEquals(1, alarms.getData().size());
-        Assert.assertEquals(created, alarms.getData().get(0));
+        Assert.assertEquals(created, new Alarm(alarms.getData().get(0)));
 
         // Check not existing relation
         alarms = alarmService.findAlarms(tenantId, AlarmQuery.builder()
@@ -211,6 +217,50 @@ public abstract class BaseAlarmServiceTest extends AbstractServiceTest {
                 ).build()).get();
         Assert.assertNotNull(alarms.getData());
         Assert.assertEquals(1, alarms.getData().size());
+        Assert.assertEquals(created, new Alarm(alarms.getData().get(0)));
+    }
+
+    @Test
+    public void testFindAssignedAlarm() throws ExecutionException, InterruptedException {
+
+        AssetId parentId = new AssetId(Uuids.timeBased());
+        AssetId childId = new AssetId(Uuids.timeBased());
+
+        EntityRelation relation = new EntityRelation(parentId, childId, EntityRelation.CONTAINS_TYPE);
+
+        Assert.assertTrue(relationService.saveRelationAsync(tenantId, relation).get());
+
+        long ts = System.currentTimeMillis();
+        Alarm alarm = Alarm.builder().tenantId(tenantId).originator(childId)
+                .type(TEST_ALARM)
+                .propagate(false)
+                .severity(AlarmSeverity.CRITICAL).status(AlarmStatus.ACTIVE_UNACK)
+                .startTs(ts).build();
+
+        AlarmOperationResult result = alarmService.createOrUpdateAlarm(alarm);
+        Alarm created = new Alarm(result.getAlarmInfo());
+
+        User tenantUser = new User();
+        tenantUser.setTenantId(tenantId);
+        tenantUser.setAuthority(Authority.TENANT_ADMIN);
+        tenantUser.setEmail(TEST_TENANT_EMAIL);
+        tenantUser.setFirstName(TEST_TENANT_FIRST_NAME);
+        tenantUser.setLastName(TEST_TENANT_LAST_NAME);
+        tenantUser = userService.saveUser(tenantUser);
+
+        Assert.assertNotNull(tenantUser);
+
+        AlarmOperationResult assignmentResult = alarmService.assignAlarm(tenantId, created.getId(), tenantUser.getId(), ts);
+        created = assignmentResult.getAlarmInfo();
+
+        PageData<AlarmInfo> alarms = alarmService.findAlarms(tenantId, AlarmQuery.builder()
+                .assigneeId(tenantUser.getId())
+                .fetchOriginator(true)
+                .pageLink(new TimePageLink(1, 0, "",
+                        new SortOrder("createdTime", SortOrder.Direction.DESC), 0L, System.currentTimeMillis())
+                ).build()).get();
+        Assert.assertNotNull(alarms.getData());
+        Assert.assertEquals(1, alarms.getData().size());
         Assert.assertEquals(created, alarms.getData().get(0));
     }
 
@@ -242,7 +292,7 @@ public abstract class BaseAlarmServiceTest extends AbstractServiceTest {
                 .severity(AlarmSeverity.CRITICAL).status(AlarmStatus.ACTIVE_UNACK)
                 .startTs(ts).build();
         AlarmOperationResult result = alarmService.createOrUpdateAlarm(tenantAlarm);
-        tenantAlarm = result.getAlarm();
+        tenantAlarm = new Alarm(result.getAlarmInfo());
 
         Alarm deviceAlarm = Alarm.builder().tenantId(tenantId)
                 .originator(customerDevice.getId())
@@ -251,7 +301,7 @@ public abstract class BaseAlarmServiceTest extends AbstractServiceTest {
                 .severity(AlarmSeverity.CRITICAL).status(AlarmStatus.ACTIVE_UNACK)
                 .startTs(ts).build();
         result = alarmService.createOrUpdateAlarm(deviceAlarm);
-        deviceAlarm = result.getAlarm();
+        deviceAlarm = new Alarm(result.getAlarmInfo());
 
         AlarmDataPageLink pageLink = new AlarmDataPageLink();
         pageLink.setPage(0);
@@ -279,7 +329,7 @@ public abstract class BaseAlarmServiceTest extends AbstractServiceTest {
                 ).build()).get();
         Assert.assertNotNull(alarms.getData());
         Assert.assertEquals(1, alarms.getData().size());
-        Assert.assertEquals(tenantAlarm, alarms.getData().get(0));
+        Assert.assertEquals(tenantAlarm, new Alarm(alarms.getData().get(0)));
     }
 
     @Test
@@ -318,7 +368,7 @@ public abstract class BaseAlarmServiceTest extends AbstractServiceTest {
                 .severity(AlarmSeverity.CRITICAL).status(AlarmStatus.ACTIVE_UNACK)
                 .startTs(ts).build();
         AlarmOperationResult result = alarmService.createOrUpdateAlarm(tenantAlarm);
-        tenantAlarm = result.getAlarm();
+        tenantAlarm = new Alarm(result.getAlarmInfo());
 
         Alarm customerAlarm = Alarm.builder().tenantId(tenantId)
                 .originator(tenantDevice.getId())
@@ -327,7 +377,7 @@ public abstract class BaseAlarmServiceTest extends AbstractServiceTest {
                 .severity(AlarmSeverity.CRITICAL).status(AlarmStatus.ACTIVE_UNACK)
                 .startTs(ts).build();
         result = alarmService.createOrUpdateAlarm(customerAlarm);
-        customerAlarm = result.getAlarm();
+        customerAlarm = new Alarm(result.getAlarmInfo());
 
         AlarmDataPageLink pageLink = new AlarmDataPageLink();
         pageLink.setPage(0);
@@ -368,7 +418,7 @@ public abstract class BaseAlarmServiceTest extends AbstractServiceTest {
                 .severity(AlarmSeverity.CRITICAL).status(AlarmStatus.ACTIVE_UNACK)
                 .startTs(ts).build();
         AlarmOperationResult result = alarmService.createOrUpdateAlarm(tenantAlarm);
-        tenantAlarm = result.getAlarm();
+        tenantAlarm = new Alarm(result.getAlarmInfo());
 
         Alarm customerAlarm = Alarm.builder().tenantId(tenantId)
                 .originator(device.getId())
@@ -378,7 +428,7 @@ public abstract class BaseAlarmServiceTest extends AbstractServiceTest {
                 .severity(AlarmSeverity.CRITICAL).status(AlarmStatus.ACTIVE_UNACK)
                 .startTs(ts).build();
         result = alarmService.createOrUpdateAlarm(customerAlarm);
-        customerAlarm = result.getAlarm();
+        customerAlarm = new Alarm(result.getAlarmInfo());
 
         AlarmDataPageLink pageLink = new AlarmDataPageLink();
         pageLink.setPage(0);
@@ -402,11 +452,11 @@ public abstract class BaseAlarmServiceTest extends AbstractServiceTest {
         Assert.assertEquals(customerAlarm, customerAlarms.getData().get(0));
     }
 
-    private AlarmDataQuery toQuery(AlarmDataPageLink pageLink){
+    private AlarmDataQuery toQuery(AlarmDataPageLink pageLink) {
         return toQuery(pageLink, Collections.emptyList());
     }
 
-    private AlarmDataQuery toQuery(AlarmDataPageLink pageLink, List<EntityKey> alarmFields){
+    private AlarmDataQuery toQuery(AlarmDataPageLink pageLink, List<EntityKey> alarmFields) {
         return new AlarmDataQuery(new DeviceTypeFilter(), pageLink, null, null, null, alarmFields);
     }
 
@@ -425,7 +475,7 @@ public abstract class BaseAlarmServiceTest extends AbstractServiceTest {
         customerDevice = deviceService.saveDevice(customerDevice);
 
         // no one alarms was created
-        Assert.assertNull(alarmService.findHighestAlarmSeverity(tenantId, customerDevice.getId(), null, null));
+        Assert.assertNull(alarmService.findHighestAlarmSeverity(tenantId, customerDevice.getId(), null, null, null));
 
         Alarm alarm1 = Alarm.builder()
                 .tenantId(tenantId)
@@ -435,7 +485,7 @@ public abstract class BaseAlarmServiceTest extends AbstractServiceTest {
                 .status(AlarmStatus.ACTIVE_UNACK)
                 .startTs(System.currentTimeMillis())
                 .build();
-        alarm1 = alarmService.createOrUpdateAlarm(alarm1).getAlarm();
+        alarm1 = alarmService.createOrUpdateAlarm(alarm1).getAlarmInfo();
         alarmService.clearAlarm(tenantId, alarm1.getId(), null, System.currentTimeMillis()).get();
 
         Alarm alarm2 = Alarm.builder()
@@ -446,7 +496,7 @@ public abstract class BaseAlarmServiceTest extends AbstractServiceTest {
                 .status(AlarmStatus.ACTIVE_ACK)
                 .startTs(System.currentTimeMillis())
                 .build();
-        alarm2 = alarmService.createOrUpdateAlarm(alarm2).getAlarm();
+        alarm2 = alarmService.createOrUpdateAlarm(alarm2).getAlarmInfo();
         alarmService.clearAlarm(tenantId, alarm2.getId(), null, System.currentTimeMillis()).get();
 
         Alarm alarm3 = Alarm.builder()
@@ -457,13 +507,13 @@ public abstract class BaseAlarmServiceTest extends AbstractServiceTest {
                 .status(AlarmStatus.ACTIVE_ACK)
                 .startTs(System.currentTimeMillis())
                 .build();
-        alarm3 = alarmService.createOrUpdateAlarm(alarm3).getAlarm();
+        alarm3 = alarmService.createOrUpdateAlarm(alarm3).getAlarmInfo();
 
-        Assert.assertEquals(AlarmSeverity.MAJOR, alarmService.findHighestAlarmSeverity(tenantId, customerDevice.getId(), AlarmSearchStatus.UNACK, null));
+        Assert.assertEquals(AlarmSeverity.MAJOR, alarmService.findHighestAlarmSeverity(tenantId, customerDevice.getId(), AlarmSearchStatus.UNACK, null, null));
-        Assert.assertEquals(AlarmSeverity.CRITICAL, alarmService.findHighestAlarmSeverity(tenantId, customerDevice.getId(), null, null));
+        Assert.assertEquals(AlarmSeverity.CRITICAL, alarmService.findHighestAlarmSeverity(tenantId, customerDevice.getId(), null, null, null));
-        Assert.assertEquals(AlarmSeverity.MAJOR, alarmService.findHighestAlarmSeverity(tenantId, customerDevice.getId(), null, AlarmStatus.CLEARED_UNACK));
+        Assert.assertEquals(AlarmSeverity.MAJOR, alarmService.findHighestAlarmSeverity(tenantId, customerDevice.getId(), null, AlarmStatus.CLEARED_UNACK, null));
-        Assert.assertEquals(AlarmSeverity.CRITICAL, alarmService.findHighestAlarmSeverity(tenantId, customerDevice.getId(), AlarmSearchStatus.ACTIVE, null));
+        Assert.assertEquals(AlarmSeverity.CRITICAL, alarmService.findHighestAlarmSeverity(tenantId, customerDevice.getId(), AlarmSearchStatus.ACTIVE, null, null));
-        Assert.assertEquals(AlarmSeverity.MINOR, alarmService.findHighestAlarmSeverity(tenantId, customerDevice.getId(), null, AlarmStatus.CLEARED_ACK));
+        Assert.assertEquals(AlarmSeverity.MINOR, alarmService.findHighestAlarmSeverity(tenantId, customerDevice.getId(), null, AlarmStatus.CLEARED_ACK, null));
     }
 
     @Test
@@ -487,7 +537,7 @@ public abstract class BaseAlarmServiceTest extends AbstractServiceTest {
                 .startTs(ts).build();
 
         AlarmOperationResult result = alarmService.createOrUpdateAlarm(alarm);
-        Alarm created = result.getAlarm();
+        Alarm created = new Alarm(result.getAlarmInfo());
 
         AlarmDataPageLink pageLink = new AlarmDataPageLink();
         pageLink.setPage(0);
@@ -504,7 +554,7 @@ public abstract class BaseAlarmServiceTest extends AbstractServiceTest {
 
         Assert.assertNotNull(alarms.getData());
         Assert.assertEquals(1, alarms.getData().size());
-        Assert.assertEquals(created, alarms.getData().get(0));
+        Assert.assertEquals(created, new Alarm(alarms.getData().get(0)));
 
         pageLink.setPage(0);
         pageLink.setPageSize(10);
@@ -530,7 +580,7 @@ public abstract class BaseAlarmServiceTest extends AbstractServiceTest {
         // Check child relation
         created.setPropagate(true);
         result = alarmService.createOrUpdateAlarm(created);
-        created = result.getAlarm();
+        created = new Alarm(result.getAlarmInfo());
 
         // Check child relation
         pageLink.setPage(0);
@@ -546,7 +596,7 @@ public abstract class BaseAlarmServiceTest extends AbstractServiceTest {
         alarms = alarmService.findAlarmDataByQueryForEntities(tenantId, toQuery(pageLink), Collections.singletonList(childId));
         Assert.assertNotNull(alarms.getData());
         Assert.assertEquals(1, alarms.getData().size());
-        Assert.assertEquals(created, alarms.getData().get(0));
+        Assert.assertEquals(created, new Alarm(alarms.getData().get(0)));
 
         // Check parent relation
         pageLink.setPage(0);
@@ -562,7 +612,7 @@ public abstract class BaseAlarmServiceTest extends AbstractServiceTest {
         alarms = alarmService.findAlarmDataByQueryForEntities(tenantId, toQuery(pageLink), Collections.singletonList(parentId));
         Assert.assertNotNull(alarms.getData());
         Assert.assertEquals(1, alarms.getData().size());
-        Assert.assertEquals(created, alarms.getData().get(0));
+        Assert.assertEquals(created, new Alarm(alarms.getData().get(0)));
 
         PageData<AlarmInfo> alarmsInfoData = alarmService.findAlarms(tenantId, AlarmQuery.builder()
                 .affectedEntityId(childId)
@@ -607,7 +657,7 @@ public abstract class BaseAlarmServiceTest extends AbstractServiceTest {
         alarms = alarmService.findAlarmDataByQueryForEntities(tenantId, toQuery(pageLink), Collections.singletonList(parentId));
         Assert.assertNotNull(alarms.getData());
         Assert.assertEquals(1, alarms.getData().size());
-        Assert.assertEquals(created, alarms.getData().get(0));
+        Assert.assertEquals(created, new Alarm(alarms.getData().get(0)));
 
         alarmService.ackAlarm(tenantId, created.getId(), System.currentTimeMillis()).get();
         created = alarmService.findAlarmByIdAsync(tenantId, created.getId()).get();
@@ -625,7 +675,7 @@ public abstract class BaseAlarmServiceTest extends AbstractServiceTest {
         alarms = alarmService.findAlarmDataByQueryForEntities(tenantId, toQuery(pageLink), Collections.singletonList(childId));
         Assert.assertNotNull(alarms.getData());
         Assert.assertEquals(1, alarms.getData().size());
-        Assert.assertEquals(created, alarms.getData().get(0));
+        Assert.assertEquals(created, new Alarm(alarms.getData().get(0)));
     }
 
     @Test
@@ -645,7 +695,7 @@ public abstract class BaseAlarmServiceTest extends AbstractServiceTest {
                 .startTs(ts).build();
 
         AlarmOperationResult result = alarmService.createOrUpdateAlarm(alarm);
-        Alarm created = result.getAlarm();
+        Alarm created = new Alarm(result.getAlarmInfo());
 
         PageData<AlarmInfo> alarms = alarmService.findAlarms(tenantId, AlarmQuery.builder()
                 .affectedEntityId(childId)
@@ -655,7 +705,7 @@ public abstract class BaseAlarmServiceTest extends AbstractServiceTest {
                 ).build()).get();
         Assert.assertNotNull(alarms.getData());
         Assert.assertEquals(1, alarms.getData().size());
-        Assert.assertEquals(created, alarms.getData().get(0));
+        Assert.assertEquals(created, new Alarm(alarms.getData().get(0)));
 
         // Check parent relation
         alarms = alarmService.findAlarms(tenantId, AlarmQuery.builder()
@@ -666,7 +716,7 @@ public abstract class BaseAlarmServiceTest extends AbstractServiceTest {
                 ).build()).get();
         Assert.assertNotNull(alarms.getData());
         Assert.assertEquals(1, alarms.getData().size());
-        Assert.assertEquals(created, alarms.getData().get(0));
+        Assert.assertEquals(created, new Alarm(alarms.getData().get(0)));
 
         Assert.assertTrue("Alarm was not deleted when expected", alarmService.deleteAlarm(tenantId, created.getId()).isSuccessful());
 

rest-client/src/main/java/org/thingsboard/rest/client/RestClient.java

@@ -415,6 +415,14 @@ public class RestClient implements ClientHttpRequestInterceptor, Closeable {
         restTemplate.postForLocation(baseURL + "/api/alarm/{alarmId}/clear", null, alarmId.getId());
     }
 
+    public void assignAlarm(AlarmId alarmId, UserId userId) {
+        restTemplate.postForLocation(baseURL + "/api/alarm/{alarmId}/assign/{userId}", null, alarmId.getId(), userId.getId());
+    }
+
+    public void unassignAlarm(AlarmId alarmId) {
+        restTemplate.delete(baseURL + "/api/alarm/{alarmId}/assign", alarmId.getId());
+    }
+
     public PageData<AlarmInfo> getAlarms(EntityId entityId, AlarmSearchStatus searchStatus, AlarmStatus status, TimePageLink pageLink, Boolean fetchOriginator) {
         String urlSecondPart = "/api/alarm/{entityType}/{entityId}?fetchOriginator={fetchOriginator}";
         Map<String, String> params = new HashMap<>();

rule-engine/rule-engine-api/src/main/java/org/thingsboard/rule/engine/api/RuleEngineAlarmService.java

@@ -27,6 +27,7 @@ import org.thingsboard.server.common.data.id.AlarmId;
 import org.thingsboard.server.common.data.id.CustomerId;
 import org.thingsboard.server.common.data.id.EntityId;
 import org.thingsboard.server.common.data.id.TenantId;
+import org.thingsboard.server.common.data.id.UserId;
 import org.thingsboard.server.common.data.page.PageData;
 import org.thingsboard.server.common.data.query.AlarmData;
 import org.thingsboard.server.common.data.query.AlarmDataQuery;
@@ -39,7 +40,7 @@ import java.util.Collection;
  */
 public interface RuleEngineAlarmService {
 
-    Alarm createOrUpdateAlarm(Alarm alarm);
+    AlarmInfo createOrUpdateAlarm(Alarm alarm);
 
     Boolean deleteAlarm(TenantId tenantId, AlarmId alarmId);
 
@@ -49,6 +50,10 @@ public interface RuleEngineAlarmService {
 
     ListenableFuture<AlarmOperationResult> clearAlarmForResult(TenantId tenantId, AlarmId alarmId, JsonNode details, long clearTs);
 
+    AlarmInfo assignAlarm(TenantId tenantId, AlarmId alarmId, UserId assigneeId, long assignTs);
+
+    AlarmInfo unassignAlarm(TenantId tenantId, AlarmId alarmId, long assignTs);
+
     ListenableFuture<Alarm> findAlarmByIdAsync(TenantId tenantId, AlarmId alarmId);
 
     Alarm findAlarmById(TenantId tenantId, AlarmId alarmId);
@@ -61,7 +66,7 @@ public interface RuleEngineAlarmService {
 
     ListenableFuture<PageData<AlarmInfo>> findCustomerAlarms(TenantId tenantId, CustomerId customerId, AlarmQuery query);
 
-    AlarmSeverity findHighestAlarmSeverity(TenantId tenantId, EntityId entityId, AlarmSearchStatus alarmSearchStatus, AlarmStatus alarmStatus);
+    AlarmSeverity findHighestAlarmSeverity(TenantId tenantId, EntityId entityId, AlarmSearchStatus alarmSearchStatus, AlarmStatus alarmStatus, String assigneeId);
 
     PageData<AlarmData> findAlarmDataByQueryForEntities(TenantId tenantId, AlarmDataQuery query, Collection<EntityId> orderedEntityIds);
 }

rule-engine/rule-engine-components/src/main/java/org/thingsboard/rule/engine/profile/AlarmState.java

@@ -132,7 +132,7 @@ class AlarmState {
                 );
                 DonAsynchron.withCallback(alarmClearOperationResult,
                         result -> {
-                            pushMsg(ctx, msg, new TbAlarmResult(false, false, true, result.getAlarm()), clearState);
+                            pushMsg(ctx, msg, new TbAlarmResult(false, false, true, result.getAlarmInfo()), clearState);
                         },
                         throwable -> {
                             throw new RuntimeException(throwable);

ui-ngx/src/app/modules/home/components/alarm/alarm-details-dialog.component.ts

@@ -84,10 +84,15 @@ export class AlarmDetailsDialogComponent extends DialogComponent<AlarmDetailsDia
       {
         createdTime: [''],
         originatorName: [''],
+        assigneeFirstName: [''],
+        assigneeLastName: [''],
+        assigneeEmail: [''],
+        assigneeId: [''],
         startTime: [''],
         endTime: [''],
         ackTime: [''],
         clearTime: [''],
+        assignTime: [''],
         type: [''],
         alarmSeverity: [''],
         alarmStatus: [''],
@@ -115,6 +120,22 @@ export class AlarmDetailsDialogComponent extends DialogComponent<AlarmDetailsDia
       .patchValue(this.datePipe.transform(alarm.createdTime, 'yyyy-MM-dd HH:mm:ss'));
     this.alarmFormGroup.get('originatorName')
       .patchValue(alarm.originatorName);
+    if(alarm.assigneeFirstName) {
+      this.alarmFormGroup.get('assigneeFirstName')
+        .patchValue(alarm.assigneeFirstName);
+    }
+    if(alarm.assigneeLastName) {
+      this.alarmFormGroup.get('assigneeLastName')
+        .patchValue(alarm.assigneeLastName);
+    }
+    if(alarm.assigneeEmail) {
+      this.alarmFormGroup.get('assigneeEmail')
+        .patchValue(alarm.assigneeEmail);
+    }
+    if(alarm.assigneeId) {
+      this.alarmFormGroup.get('assigneeId')
+        .patchValue(alarm.assigneeId.id);
+    }
     if (alarm.startTs) {
       this.alarmFormGroup.get('startTime')
         .patchValue(this.datePipe.transform(alarm.startTs, 'yyyy-MM-dd HH:mm:ss'));
@@ -131,6 +152,10 @@ export class AlarmDetailsDialogComponent extends DialogComponent<AlarmDetailsDia
       this.alarmFormGroup.get('clearTime')
         .patchValue(this.datePipe.transform(alarm.clearTs, 'yyyy-MM-dd HH:mm:ss'));
     }
+    if (alarm.assignTs) {
+      this.alarmFormGroup.get('assignTime')
+        .patchValue(this.datePipe.transform(alarm.assignTs, 'yyyy-MM-dd HH:mm:ss'));
+    }
     this.alarmFormGroup.get('type').patchValue(alarm.type);
     this.alarmFormGroup.get('alarmSeverity')
       .patchValue(this.translate.instant(alarmSeverityTranslations.get(alarm.severity)));

ui-ngx/src/app/modules/home/components/alarm/alarm-table-config.ts

@@ -116,7 +116,7 @@ export class AlarmTableConfig extends EntityTableConfig<AlarmInfo, TimePageLink>
   }
 
   fetchAlarms(pageLink: TimePageLink): Observable<PageData<AlarmInfo>> {
-    const query = new AlarmQuery(this.entityId, pageLink, this.searchStatus, null, true);
+    const query = new AlarmQuery(this.entityId, pageLink, this.searchStatus, null, null, true);
     return this.alarmService.getAlarms(query);
   }
 

ui-ngx/src/app/modules/home/models/widget-component.models.ts

@@ -89,6 +89,7 @@ import { TbPopoverComponent } from '@shared/components/popover.component';
 import { EntityId } from '@shared/models/id/entity-id';
 import { AlarmQuery, AlarmSearchStatus, AlarmStatus} from '@app/shared/models/alarm.models';
 import { MillisecondsToTimeStringPipe, TelemetrySubscriber } from '@app/shared/public-api';
+import { UserId } from '@shared/models/id/user-id';
 
 export interface IWidgetAction {
   name: string;
@@ -415,8 +416,8 @@ export class WidgetContext {
     return new TimePageLink(pageSize, page, textSearch, sortOrder, startTime, endTime);
   }
 
-  alarmQuery(entityId: EntityId, pageLink: TimePageLink, searchStatus: AlarmSearchStatus, status: AlarmStatus, fetchOriginator: boolean) {
+  alarmQuery(entityId: EntityId, pageLink: TimePageLink, searchStatus: AlarmSearchStatus, status: AlarmStatus, assigneeId: UserId, fetchOriginator: boolean) {
-    return new AlarmQuery(entityId, pageLink, searchStatus, status, fetchOriginator);
+    return new AlarmQuery(entityId, pageLink, searchStatus, status, assigneeId, fetchOriginator);
   }
 }
 

ui-ngx/src/app/shared/models/alarm.models.ts

@@ -23,6 +23,7 @@ import { NULL_UUID } from '@shared/models/id/has-uuid';
 import { EntityType } from '@shared/models/entity-type.models';
 import { CustomerId } from '@shared/models/id/customer-id';
 import { TableCellButtonActionDescriptor } from '@home/components/widget/lib/table-widget.models';
+import { UserId } from "@shared/models/id/user-id";
 
 export enum AlarmSeverity {
   CRITICAL = 'CRITICAL',
@@ -89,6 +90,7 @@ export const alarmSeverityColors = new Map<AlarmSeverity, string>(
 export interface Alarm extends BaseData<AlarmId> {
   tenantId: TenantId;
   customerId: CustomerId;
+  assigneeId: UserId;
   type: string;
   originator: EntityId;
   severity: AlarmSeverity;
@@ -97,12 +99,17 @@ export interface Alarm extends BaseData<AlarmId> {
   endTs: number;
   ackTs: number;
   clearTs: number;
+  assignTs: number;
   propagate: boolean;
   details?: any;
 }
 
 export interface AlarmInfo extends Alarm {
   originatorName: string;
+  originatorLabel: string;
+  assigneeFirstName: string;
+  assigneeLastName: string;
+  assigneeEmail: string;
 }
 
 export interface AlarmDataInfo extends AlarmInfo {
@@ -115,12 +122,18 @@ export const simulatedAlarm: AlarmInfo = {
   id: new AlarmId(NULL_UUID),
   tenantId: new TenantId(NULL_UUID),
   customerId: new CustomerId(NULL_UUID),
+  assigneeId: new UserId(NULL_UUID),
   createdTime: new Date().getTime(),
   startTs: new Date().getTime(),
   endTs: 0,
   ackTs: 0,
   clearTs: 0,
+  assignTs: 0,
   originatorName: 'Simulated',
+  originatorLabel: 'Simulated',
+  assigneeFirstName: "",
+  assigneeLastName: "",
+  assigneeEmail: "test@example.com",
   originator: {
     entityType: EntityType.DEVICE,
     id: '1'
@@ -172,11 +185,22 @@ export const alarmFields: {[fieldName: string]: AlarmField} = {
     name: 'alarm.clear-time',
     time: true
   },
+  assignTime: {
+    keyName: 'assignTime',
+    value: 'assignTs',
+    name: 'alarm.assign-time',
+    time: true
+  },
   originator: {
     keyName: 'originator',
     value: 'originatorName',
     name: 'alarm.originator'
   },
+  originatorLabel: {
+    keyName: 'originatorLabel',
+    value: 'originatorLabel',
+    name: 'alarm.originator-label'
+  },
   originatorType: {
     keyName: 'originatorType',
     value: 'originator.entityType',
@@ -196,6 +220,26 @@ export const alarmFields: {[fieldName: string]: AlarmField} = {
     keyName: 'status',
     value: 'status',
     name: 'alarm.status'
+  },
+  assigneeId: {
+    keyName: 'assigneeId',
+    value: 'assigneeId.id',
+    name: 'alarm.assignee-id'
+  },
+  assigneeFirstName: {
+    keyName: 'assigneeFirstName',
+    value: 'assigneeFirstName',
+    name: 'alarm.assignee-first-name'
+  },
+  assigneeLastName: {
+    keyName: 'assigneeLastName',
+    value: 'assigneeLastName',
+    name: 'alarm.assignee-last-name'
+  },
+  assigneeEmail: {
+    keyName: 'assigneeEmail',
+    value: 'assigneeEmail',
+    name: 'alarm.assignee-email'
   }
 };
 
@@ -205,15 +249,17 @@ export class AlarmQuery {
   pageLink: TimePageLink;
   searchStatus: AlarmSearchStatus;
   status: AlarmStatus;
+  assigneeId: UserId;
   fetchOriginator: boolean;
 
   constructor(entityId: EntityId, pageLink: TimePageLink,
               searchStatus: AlarmSearchStatus, status: AlarmStatus,
-              fetchOriginator: boolean) {
+              assigneeId: UserId, fetchOriginator: boolean) {
     this.affectedEntityId = entityId;
     this.pageLink = pageLink;
     this.searchStatus = searchStatus;
     this.status = status;
+    this.assigneeId = assigneeId;
     this.fetchOriginator = fetchOriginator;
   }
 
@@ -224,6 +270,8 @@ export class AlarmQuery {
       query += `&searchStatus=${this.searchStatus}`;
     } else if (this.status) {
       query += `&status=${this.status}`;
+    } else if (this.assigneeId) {
+      query += `&assigneeId=${this.assigneeId.id}`;
     }
     if (typeof this.fetchOriginator !== 'undefined' && this.fetchOriginator !== null) {
       query += `&fetchOriginator=${this.fetchOriginator}`;

ui-ngx/src/app/shared/models/audit-log.models.ts

@@ -47,6 +47,8 @@ export enum ActionType {
   RELATIONS_DELETED = 'RELATIONS_DELETED',
   ALARM_ACK = 'ALARM_ACK',
   ALARM_CLEAR = 'ALARM_CLEAR',
+  ALARM_ASSIGN = 'ALARM_ASSIGN',
+  ALARM_UNASSIGN = 'ALARM_UNASSIGN',
   ADDED_COMMENT = 'ADDED_COMMENT',
   UPDATED_COMMENT = 'UPDATED_COMMENT',
   DELETED_COMMENT = 'DELETED_COMMENT',
@@ -88,6 +90,8 @@ export const actionTypeTranslations = new Map<ActionType, string>(
     [ActionType.RELATIONS_DELETED, 'audit-log.type-relations-delete'],
     [ActionType.ALARM_ACK, 'audit-log.type-alarm-ack'],
     [ActionType.ALARM_CLEAR, 'audit-log.type-alarm-clear'],
+    [ActionType.ALARM_ASSIGN, 'audit-log.type-alarm-assign'],
+    [ActionType.ALARM_UNASSIGN, 'audit-log.type-alarm-unassign'],
     [ActionType.ADDED_COMMENT, 'audit-log.type-added-comment'],
     [ActionType.UPDATED_COMMENT, 'audit-log.type-updated-comment'],
     [ActionType.DELETED_COMMENT, 'audit-log.type-deleted-comment'],

ui-ngx/src/assets/locale/locale.constant-en_US.json

@@ -433,7 +433,12 @@
         "type": "Type",
         "severity": "Severity",
         "originator": "Originator",
+        "originator-label": "Originator label",
         "originator-type": "Originator type",
+        "assignee-id": "Assignee id",
+        "assignee-first-name": "Assignee first name",
+        "assignee-last-name": "Assignee last name",
+        "assignee-email": "Assignee email",
         "details": "Details",
         "status": "Status",
         "alarm-details": "Alarm details",
@@ -441,6 +446,7 @@
         "end-time": "End time",
         "ack-time": "Acknowledged time",
         "clear-time": "Cleared time",
+        "assign-time": "Assign time",
         "alarm-severity-list": "Alarm severity list",
         "any-severity": "Any severity",
         "severity-critical": "Critical",
@@ -728,6 +734,8 @@
         "type-relations-delete": "All relation deleted",
         "type-alarm-ack": "Acknowledged",
         "type-alarm-clear": "Cleared",
+        "type-alarm-assign": "Assigned",
+        "type-alarm-unassign": "Unassigned",
         "type-added-comment": "Added comment",
         "type-updated-comment": "Updated comment",
         "type-deleted-comment": "Deleted comment",