Single PartitionChangeEvent after recalculatePartitions

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

@@ -121,7 +121,7 @@ public class DefaultActorService extends TbApplicationEventListener<PartitionCha
     @Override
     protected void onTbApplicationEvent(PartitionChangeEvent event) {
         log.info("Received partition change event.");
-        this.appActor.tellWithHighPriority(new PartitionChangeMsg(event.getQueueKey().getType(), event.getPartitions()));
+        this.appActor.tellWithHighPriority(new PartitionChangeMsg(event.getServiceType()));
     }
 
     @PreDestroy

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

@@ -183,19 +183,21 @@ public class DefaultTbRuleEngineConsumerService extends AbstractConsumerService<
     @Override
     protected void onTbApplicationEvent(PartitionChangeEvent event) {
         if (event.getServiceType().equals(getServiceType())) {
-            String serviceQueue = event.getQueueKey().getQueueName();
-            log.info("[{}] Subscribing to partitions: {}", serviceQueue, event.getPartitions());
-            Queue configuration = consumerConfigurations.get(event.getQueueKey());
-            if (configuration == null) {
-                log.warn("Received invalid partition change event for {} that is not managed by this service", event.getQueueKey());
-                return;
-            }
-            if (!configuration.isConsumerPerPartition()) {
-                consumers.get(event.getQueueKey()).subscribe(event.getPartitions());
-            } else {
-                log.info("[{}] Subscribing consumer per partition: {}", serviceQueue, event.getPartitions());
-                subscribeConsumerPerPartition(event.getQueueKey(), event.getPartitions());
-            }
+            event.getPartitionsMap().forEach((queueKey, partitions) -> {
+                String serviceQueue = queueKey.getQueueName();
+                log.info("[{}] Subscribing to partitions: {}", serviceQueue, partitions);
+                Queue configuration = consumerConfigurations.get(queueKey);
+                if (configuration == null) {
+                    log.warn("Received invalid partition change event for {} that is not managed by this service", queueKey);
+                    return;
+                }
+                if (!configuration.isConsumerPerPartition()) {
+                    consumers.get(queueKey).subscribe(partitions);
+                } else {
+                    log.info("[{}] Subscribing consumer per partition: {}", serviceQueue, partitions);
+                    subscribeConsumerPerPartition(queueKey, partitions);
+                }
+            });
         }
     }
 

application/src/test/java/org/thingsboard/server/queue/discovery/HashPartitionServiceTest.java

@@ -286,10 +286,8 @@ public class HashPartitionServiceTest {
         HashPartitionService partitionService_common = createPartitionService();
         partitionService_common.recalculatePartitions(commonRuleEngine, List.of(dedicatedRuleEngine));
         verifyPartitionChangeEvent(event -> {
-            return event.getQueueKey().getTenantId().isSysTenantId() &&
-                    event.getQueueKey().getQueueName().equals(DataConstants.MAIN_QUEUE_NAME) &&
-                    event.getPartitions().stream().map(TopicPartitionInfo::getPartition).collect(Collectors.toSet())
-                            .size() == systemQueue.getPartitions();
+            QueueKey queueKey = new QueueKey(ServiceType.TB_RULE_ENGINE, DataConstants.MAIN_QUEUE_NAME, TenantId.SYS_TENANT_ID);
+            return event.getPartitionsMap().get(queueKey).size() == systemQueue.getPartitions();
         });
 
         Mockito.reset(applicationEventPublisher);
@@ -316,18 +314,15 @@ public class HashPartitionServiceTest {
         partitionService_common.recalculatePartitions(commonRuleEngine, List.of(dedicatedRuleEngine));
         // expecting event about no partitions for isolated queue key
         verifyPartitionChangeEvent(event -> {
-            return event.getQueueKey().getTenantId().equals(tenantId) &&
-                    event.getQueueKey().getQueueName().equals(DataConstants.MAIN_QUEUE_NAME) &&
-                    event.getPartitions().isEmpty();
+            QueueKey queueKey = new QueueKey(ServiceType.TB_RULE_ENGINE, DataConstants.MAIN_QUEUE_NAME, tenantId);
+            return event.getPartitionsMap().get(queueKey).isEmpty();
         });
 
         partitionService_dedicated.updateQueue(queueUpdateMsg);
         partitionService_dedicated.recalculatePartitions(dedicatedRuleEngine, List.of(commonRuleEngine));
         verifyPartitionChangeEvent(event -> {
-            return event.getQueueKey().getTenantId().equals(tenantId) &&
-                    event.getQueueKey().getQueueName().equals(DataConstants.MAIN_QUEUE_NAME) &&
-                    event.getPartitions().stream().map(TopicPartitionInfo::getPartition).collect(Collectors.toSet())
-                            .size() == isolatedQueue.getPartitions();
+            QueueKey queueKey = new QueueKey(ServiceType.TB_RULE_ENGINE, DataConstants.MAIN_QUEUE_NAME, tenantId);
+            return event.getPartitionsMap().get(queueKey).size() == isolatedQueue.getPartitions();
         });
 
 
@@ -345,9 +340,8 @@ public class HashPartitionServiceTest {
         partitionService_dedicated.removeQueue(queueDeleteMsg);
         partitionService_dedicated.recalculatePartitions(dedicatedRuleEngine, List.of(commonRuleEngine));
         verifyPartitionChangeEvent(event -> {
-            return event.getQueueKey().getTenantId().equals(tenantId) &&
-                    event.getQueueKey().getQueueName().equals(DataConstants.MAIN_QUEUE_NAME) &&
-                    event.getPartitions().isEmpty();
+            QueueKey queueKey = new QueueKey(ServiceType.TB_RULE_ENGINE, DataConstants.MAIN_QUEUE_NAME, tenantId);
+            return event.getPartitionsMap().get(queueKey).isEmpty();
         });
     }
 

application/src/test/java/org/thingsboard/server/service/state/DefaultDeviceStateServiceTest.java

@@ -160,7 +160,9 @@ public class DefaultDeviceStateServiceTest {
         Mockito.reset(service, telemetrySubscriptionService);
         ReflectionTestUtils.setField(service, "defaultInactivityTimeoutMs", timeout);
         service.init();
-        PartitionChangeEvent event = new PartitionChangeEvent(this, new QueueKey(ServiceType.TB_CORE), Collections.singleton(tpi));
+        PartitionChangeEvent event = new PartitionChangeEvent(this, ServiceType.TB_CORE, Map.of(
+                new QueueKey(ServiceType.TB_CORE), Collections.singleton(tpi)
+        ));
         service.onApplicationEvent(event);
         Thread.sleep(100);
     }

common/message/src/main/java/org/thingsboard/server/common/msg/queue/PartitionChangeMsg.java

@@ -20,8 +20,6 @@ import lombok.Getter;
 import org.thingsboard.server.common.msg.MsgType;
 import org.thingsboard.server.common.msg.TbActorMsg;
 
-import java.util.Set;
-
 /**
  * @author Andrew Shvayka
  */
@@ -30,8 +28,6 @@ public final class PartitionChangeMsg implements TbActorMsg {
 
     @Getter
     private final ServiceType serviceType;
-    @Getter
-    private final Set<TopicPartitionInfo> partitions;
 
     @Override
     public MsgType getMsgType() {

common/queue/src/main/java/org/thingsboard/server/queue/discovery/HashPartitionService.java

@@ -271,6 +271,8 @@ public class HashPartitionService implements PartitionService {
         final ConcurrentMap<QueueKey, List<Integer>> oldPartitions = myPartitions;
         myPartitions = newPartitions;
 
+        Map<QueueKey, Set<TopicPartitionInfo>> changedPartitionsMap = new HashMap<>();
+
         Set<QueueKey> removed = new HashSet<>();
         oldPartitions.forEach((queueKey, partitions) -> {
             if (!newPartitions.containsKey(queueKey)) {
@@ -286,7 +288,7 @@ public class HashPartitionService implements PartitionService {
         }
         removed.forEach(queueKey -> {
             log.info("[{}] NO MORE PARTITIONS FOR CURRENT KEY", queueKey);
-            applicationEventPublisher.publishEvent(new PartitionChangeEvent(this, queueKey, Collections.emptySet()));
+            changedPartitionsMap.put(queueKey, Collections.emptySet());
         });
 
         myPartitions.forEach((queueKey, partitions) -> {
@@ -295,9 +297,19 @@ public class HashPartitionService implements PartitionService {
                 Set<TopicPartitionInfo> tpiList = partitions.stream()
                         .map(partition -> buildTopicPartitionInfo(queueKey, partition))
                         .collect(Collectors.toSet());
-                applicationEventPublisher.publishEvent(new PartitionChangeEvent(this, queueKey, tpiList));
+                changedPartitionsMap.put(queueKey, tpiList);
             }
         });
+        if (!changedPartitionsMap.isEmpty()) {
+            Map<ServiceType, Map<QueueKey, Set<TopicPartitionInfo>>> partitionsByServiceType = new HashMap<>();
+            changedPartitionsMap.forEach((queueKey, partitions) -> {
+                partitionsByServiceType.computeIfAbsent(queueKey.getType(), serviceType -> new HashMap<>())
+                        .put(queueKey, partitions);
+            });
+            partitionsByServiceType.forEach((serviceType, partitionsMap) -> {
+                applicationEventPublisher.publishEvent(new PartitionChangeEvent(this, serviceType, partitionsMap));
+            });
+        }
 
         if (currentOtherServices == null) {
             currentOtherServices = new ArrayList<>(otherServices);

common/queue/src/main/java/org/thingsboard/server/queue/discovery/event/PartitionChangeEvent.java

@@ -21,6 +21,8 @@ import org.thingsboard.server.common.msg.queue.ServiceType;
 import org.thingsboard.server.common.msg.queue.TopicPartitionInfo;
 import org.thingsboard.server.queue.discovery.QueueKey;
 
+import java.util.Collections;
+import java.util.Map;
 import java.util.Set;
 
 @ToString(callSuper = true)
@@ -29,17 +31,19 @@ public class PartitionChangeEvent extends TbApplicationEvent {
     private static final long serialVersionUID = -8731788167026510559L;
 
     @Getter
-    private final QueueKey queueKey;
+    private final ServiceType serviceType;
     @Getter
-    private final Set<TopicPartitionInfo> partitions;
+    private final Map<QueueKey, Set<TopicPartitionInfo>> partitionsMap;
 
-    public PartitionChangeEvent(Object source, QueueKey queueKey, Set<TopicPartitionInfo> partitions) {
+    public PartitionChangeEvent(Object source, ServiceType serviceType, Map<QueueKey, Set<TopicPartitionInfo>> partitionsMap) {
         super(source);
-        this.queueKey = queueKey;
-        this.partitions = partitions;
+        this.serviceType = serviceType;
+        this.partitionsMap = partitionsMap;
     }
 
-    public ServiceType getServiceType() {
-        return queueKey.getType();
+    // only for service types that have single QueueKey
+    public Set<TopicPartitionInfo> getPartitions() {
+        return partitionsMap.values().stream().findAny().orElse(Collections.emptySet());
     }
+
 }