introduced AlarmCommentSubType enum

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

@@ -30,6 +30,8 @@ import org.thingsboard.server.common.data.exception.ThingsboardException;
 import org.thingsboard.server.dao.alarm.AlarmCommentService;
 import org.thingsboard.server.service.entitiy.AbstractTbEntityService;
 
+import static org.thingsboard.server.common.data.alarm.AlarmCommentSubType.COMMENT_DELETED;
+
 @Service
 @AllArgsConstructor
 public class DefaultTbAlarmCommentService extends AbstractTbEntityService implements TbAlarmCommentService {
@@ -59,10 +61,10 @@ public class DefaultTbAlarmCommentService extends AbstractTbEntityService implem
         if (alarmComment.getType() == AlarmCommentType.OTHER) {
             alarmComment.setType(AlarmCommentType.SYSTEM);
             alarmComment.setUserId(null);
-            alarmComment.setComment(JacksonUtil.newObjectNode().put("text",
-                    String.format("User %s deleted his comment",
-                            (user.getFirstName() == null || user.getLastName() == null) ? user.getName() : user.getFirstName() + " " + user.getLastName()))
-                    .put("subtype", "deleted"));
+            alarmComment.setComment(JacksonUtil.newObjectNode()
+                    .put("text", String.format(COMMENT_DELETED.getText(), user.getTitle()))
+                    .put("subtype", COMMENT_DELETED.name())
+                    .put("userName", user.getTitle()));
             AlarmComment savedAlarmComment = checkNotNull(alarmCommentService.saveAlarmComment(alarm.getTenantId(), alarmComment));
             logEntityActionService.logEntityAction(alarm.getTenantId(), alarm.getId(), alarm, alarm.getCustomerId(), ActionType.DELETED_COMMENT, user, savedAlarmComment);
         } else {

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

@@ -27,6 +27,7 @@ import org.thingsboard.server.common.data.alarm.Alarm;
 import org.thingsboard.server.common.data.alarm.AlarmApiCallResult;
 import org.thingsboard.server.common.data.alarm.AlarmAssignee;
 import org.thingsboard.server.common.data.alarm.AlarmComment;
+import org.thingsboard.server.common.data.alarm.AlarmCommentSubType;
 import org.thingsboard.server.common.data.alarm.AlarmCommentType;
 import org.thingsboard.server.common.data.alarm.AlarmCreateOrUpdateActiveRequest;
 import org.thingsboard.server.common.data.alarm.AlarmInfo;
@@ -39,9 +40,17 @@ import org.thingsboard.server.common.data.id.TenantId;
 import org.thingsboard.server.common.data.id.UserId;
 import org.thingsboard.server.service.entitiy.AbstractTbEntityService;
 
+import java.util.LinkedHashMap;
 import java.util.List;
+import java.util.Map;
 import java.util.UUID;
 
+import static org.thingsboard.server.common.data.alarm.AlarmCommentSubType.ACKED_BY_USER;
+import static org.thingsboard.server.common.data.alarm.AlarmCommentSubType.ASSIGNED_TO_USER;
+import static org.thingsboard.server.common.data.alarm.AlarmCommentSubType.CLEARED_BY_USER;
+import static org.thingsboard.server.common.data.alarm.AlarmCommentSubType.UNASSIGNED_BY_USER;
+import static org.thingsboard.server.common.data.alarm.AlarmCommentSubType.UNASSIGNED_FROM_DELETED_USER;
+
 @Service
 @AllArgsConstructor
 @Slf4j
@@ -102,8 +111,7 @@ public class DefaultTbAlarmService extends AbstractTbEntityService implements Tb
         }
         AlarmInfo alarmInfo = result.getAlarm();
         if (result.isModified()) {
-            String systemComment = String.format("Alarm was acknowledged by user %s", user.getTitle());
-            addSystemAlarmComment(alarmInfo, user, "ACK", systemComment);
+            addSystemAlarmComment(alarmInfo, user, ACKED_BY_USER,"userName", user.getTitle());
             logEntityActionService.logEntityAction(alarm.getTenantId(), alarm.getOriginator(), alarmInfo,
                     alarmInfo.getCustomerId(), ActionType.ALARM_ACK, user);
         } else {
@@ -125,8 +133,7 @@ public class DefaultTbAlarmService extends AbstractTbEntityService implements Tb
         }
         AlarmInfo alarmInfo = result.getAlarm();
         if (result.isCleared()) {
-            String systemComment = String.format("Alarm was cleared by user %s", user.getTitle());
-            addSystemAlarmComment(alarmInfo, user, "CLEAR", systemComment);
+            addSystemAlarmComment(alarmInfo, user, CLEARED_BY_USER, "userName", user.getTitle());
             logEntityActionService.logEntityAction(alarm.getTenantId(), alarm.getOriginator(), alarmInfo,
                     alarmInfo.getCustomerId(), ActionType.ALARM_CLEAR, user);
         } else {
@@ -144,8 +151,7 @@ public class DefaultTbAlarmService extends AbstractTbEntityService implements Tb
         AlarmInfo alarmInfo = result.getAlarm();
         if (result.isModified()) {
             AlarmAssignee assignee = alarmInfo.getAssignee();
-            String systemComment = String.format("Alarm was assigned by user %s to user %s", user.getTitle(), assignee.getTitle());
-            addSystemAlarmComment(alarmInfo, user, "ASSIGN", systemComment, assignee.getId());
+            addSystemAlarmComment(alarmInfo, user, ASSIGNED_TO_USER,"userName", user.getTitle(), "assigneeName", assignee.getTitle());
             logEntityActionService.logEntityAction(alarm.getTenantId(), alarm.getOriginator(), alarmInfo,
                     alarmInfo.getCustomerId(), ActionType.ALARM_ASSIGNED, user);
         } else {
@@ -162,8 +168,7 @@ public class DefaultTbAlarmService extends AbstractTbEntityService implements Tb
         }
         AlarmInfo alarmInfo = result.getAlarm();
         if (result.isModified()) {
-            String systemComment = String.format("Alarm was unassigned by user %s", user.getTitle());
-            addSystemAlarmComment(alarmInfo, user, "ASSIGN", systemComment);
+            addSystemAlarmComment(alarmInfo, user, UNASSIGNED_BY_USER, "userName", user.getTitle());
             logEntityActionService.logEntityAction(alarm.getTenantId(), alarm.getOriginator(), alarmInfo,
                     alarmInfo.getCustomerId(), ActionType.ALARM_UNASSIGNED, user);
         } else {
@@ -182,8 +187,7 @@ public class DefaultTbAlarmService extends AbstractTbEntityService implements Tb
                 continue;
             }
             if (result.isModified()) {
-                String comment = String.format("Alarm was unassigned because user %s - was deleted", userTitle);
-                addSystemAlarmComment(result.getAlarm(), null, "ASSIGN", comment);
+                addSystemAlarmComment(result.getAlarm(), null, UNASSIGNED_FROM_DELETED_USER, "userName", userTitle);
                 logEntityActionService.logEntityAction(result.getAlarm().getTenantId(), result.getAlarm().getOriginator(), result.getAlarm(), result.getAlarm().getCustomerId(), ActionType.ALARM_UNASSIGNED, null);
             }
         }
@@ -214,20 +218,24 @@ public class DefaultTbAlarmService extends AbstractTbEntityService implements Tb
         return ts > 0 ? ts : System.currentTimeMillis();
     }
 
-    private void addSystemAlarmComment(Alarm alarm, User user, String subType, String commentText) {
-        addSystemAlarmComment(alarm, user, subType, commentText, null);
+    private void addSystemAlarmComment(Alarm alarm, User user, AlarmCommentSubType subType, String param, String value) {
+        Map<String, String> params = new LinkedHashMap<>();
+        params.put(param, value);
+        addSystemAlarmComment(alarm, user, subType, params);
+    }
+
+    private void addSystemAlarmComment(Alarm alarm, User user, AlarmCommentSubType subType, String param, String value, String param2, String value2) {
+        Map<String, String> params = new LinkedHashMap<>();
+        params.put(param, value);
+        params.put(param2, value2);
+        addSystemAlarmComment(alarm, user, subType, params);
     }
 
-    private void addSystemAlarmComment(Alarm alarm, User user, String subType, String commentText, UserId assigneeId) {
+    private void addSystemAlarmComment(Alarm alarm, User user, AlarmCommentSubType subType, Map<String, String> params) {
         ObjectNode commentNode = JacksonUtil.newObjectNode();
-        commentNode.put("text", commentText)
-                .put("subtype", subType);
-        if (user != null) {
-            commentNode.put("userId", user.getId().getId().toString());
-        }
-        if (assigneeId != null) {
-            commentNode.put("assigneeId", assigneeId.getId().toString());
-        }
+        commentNode.put("text", String.format(subType.getText(), params.values()))
+                .put("subtype", subType.name());
+        params.forEach(commentNode::put);
         AlarmComment alarmComment = AlarmComment.builder()
                 .alarmId(alarm.getId())
                 .type(AlarmCommentType.SYSTEM)

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

@@ -61,6 +61,8 @@ import org.thingsboard.server.service.subscription.TbSubscriptionUtils;
 
 import java.util.Collection;
 
+import static org.thingsboard.server.common.data.alarm.AlarmCommentSubType.SEVERITY_CHANGED;
+
 /**
  * Created by ashvayka on 27.03.18.
  */
@@ -251,9 +253,9 @@ public class DefaultAlarmSubscriptionService extends AbstractSubscriptionService
                 AlarmComment.AlarmCommentBuilder alarmComment = AlarmComment.builder()
                         .alarmId(alarm.getId())
                         .type(AlarmCommentType.SYSTEM)
-                        .comment(JacksonUtil.newObjectNode().put("text",
-                                String.format("Alarm severity was updated from %s to %s", result.getOldSeverity(), alarm.getSeverity()))
-                                .put("subtype", "severityChanged")
+                        .comment(JacksonUtil.newObjectNode()
+                                .put("text", String.format(SEVERITY_CHANGED.getText(), result.getOldSeverity(), alarm.getSeverity()))
+                                .put("subtype", SEVERITY_CHANGED.name())
                                 .put("oldSeverity", result.getOldSeverity().name())
                                 .put("newSeverity", alarm.getSeverity().name()));
                 if (request != null && request.getUserId() != null) {

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

@@ -48,6 +48,7 @@ import java.util.List;
 import static org.hamcrest.Matchers.containsString;
 import static org.hamcrest.Matchers.equalTo;
 import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.status;
+import static org.thingsboard.server.common.data.alarm.AlarmCommentSubType.COMMENT_DELETED;
 
 @Slf4j
 @ContextConfiguration(classes = {AlarmCommentControllerTest.Config.class})
@@ -207,8 +208,10 @@ public class AlarmCommentControllerTest extends AbstractControllerTest {
         AlarmComment expectedAlarmComment = AlarmComment.builder()
                 .alarmId(alarm.getId())
                 .type(AlarmCommentType.SYSTEM)
-                .comment(JacksonUtil.newObjectNode().put("text", String.format("User %s deleted his comment",
-                        CUSTOMER_USER_EMAIL)))
+                .comment(JacksonUtil.newObjectNode()
+                        .put("text", String.format(COMMENT_DELETED.getText(), CUSTOMER_USER_EMAIL))
+                        .put("subtype", COMMENT_DELETED.name())
+                        .put("userName", CUSTOMER_USER_EMAIL))
                 .build();
         testLogEntityActionEntityEqClass(alarm, alarm.getId(), tenantId, customerId, customerUserId, CUSTOMER_USER_EMAIL, ActionType.DELETED_COMMENT, 1, expectedAlarmComment);
     }
@@ -226,8 +229,10 @@ public class AlarmCommentControllerTest extends AbstractControllerTest {
         AlarmComment expectedAlarmComment = AlarmComment.builder()
                 .alarmId(alarm.getId())
                 .type(AlarmCommentType.SYSTEM)
-                .comment(JacksonUtil.newObjectNode().put("text", String.format("User %s deleted his comment",
-                        TENANT_ADMIN_EMAIL)))
+                .comment(JacksonUtil.newObjectNode()
+                        .put("text", String.format(COMMENT_DELETED.getText(), TENANT_ADMIN_EMAIL))
+                        .put("subtype", COMMENT_DELETED.name())
+                        .put("userName", TENANT_ADMIN_EMAIL))
                 .build();
         testLogEntityActionEntityEqClass(alarm, alarm.getId(), tenantId, customerId, tenantAdminUserId, TENANT_ADMIN_EMAIL, ActionType.DELETED_COMMENT, 1, expectedAlarmComment);
     }

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

@@ -0,0 +1,36 @@
+/**
+ * Copyright © 2016-2025 The Thingsboard Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.thingsboard.server.common.data.alarm;
+
+import lombok.Getter;
+
+public enum AlarmCommentSubType {
+
+    ACKED_BY_USER("Alarm was acknowledged by user %s"),
+    CLEARED_BY_USER("Alarm was cleared by user %s"),
+    ASSIGNED_TO_USER("Alarm was assigned by user %s to user %s"),
+    UNASSIGNED_BY_USER("Alarm was unassigned by user %s"),
+    UNASSIGNED_FROM_DELETED_USER("Alarm was unassigned because user %s - was deleted"),
+    COMMENT_DELETED("User %s deleted his comment"),
+    SEVERITY_CHANGED("Alarm severity was changed by user %s from %s to %s");
+
+    @Getter
+    private final String text;
+
+    AlarmCommentSubType(String text) {
+        this.text = text;
+    }
+}