Refactoring and fixes for CF lifecycle events handling

application/src/main/java/org/thingsboard/server/actors/app/AppActor.java

@@ -116,7 +116,6 @@ public class AppActor extends ContextAwareActor {
             case CF_INIT_MSG:
             case CF_LINK_INIT_MSG:
             case CF_STATE_RESTORE_MSG:
-            case CF_ENTITY_LIFECYCLE_MSG:
                 //TODO: use priority from the message body. For example, messages about CF lifecycle are important and Device lifecycle are not.
                 //      same for the Linked telemetry.
                 onToCalculatedFieldSystemActorMsg((ToCalculatedFieldSystemMsg) msg, true);

application/src/main/java/org/thingsboard/server/actors/calculatedField/CalculatedFieldManagerMessageProcessor.java

@@ -196,7 +196,7 @@ public class CalculatedFieldManagerMessageProcessor extends AbstractContextAware
     }
 
     private void onEntityUpdated(ComponentLifecycleMsg msg, TbCallback callback) {
-        if (msg.getOldProfileId() != null && msg.getOldProfileId() != msg.getProfileId()) {
+        if (msg.getOldProfileId() != null && !msg.getOldProfileId().equals(msg.getProfileId())) {
             cfEntityCache.update(tenantId, msg.getOldProfileId(), msg.getProfileId(), msg.getEntityId());
             if (!isMyPartition(msg.getEntityId(), callback)) {
                 return;

application/src/main/java/org/thingsboard/server/actors/tenant/TenantActor.java

@@ -49,6 +49,7 @@ import org.thingsboard.server.common.msg.TbMsg;
 import org.thingsboard.server.common.msg.ToCalculatedFieldSystemMsg;
 import org.thingsboard.server.common.msg.aware.DeviceAwareMsg;
 import org.thingsboard.server.common.msg.aware.RuleChainAwareMsg;
+import org.thingsboard.server.common.msg.cf.CalculatedFieldEntityLifecycleMsg;
 import org.thingsboard.server.common.msg.plugin.ComponentLifecycleMsg;
 import org.thingsboard.server.common.msg.queue.PartitionChangeMsg;
 import org.thingsboard.server.common.msg.queue.QueueToRuleEngineMsg;
@@ -175,7 +176,6 @@ public class TenantActor extends RuleChainManagerActor {
             case CF_LINK_INIT_MSG:
             case CF_STATE_RESTORE_MSG:
             case CF_PARTITIONS_CHANGE_MSG:
-            case CF_ENTITY_LIFECYCLE_MSG:
                 onToCalculatedFieldSystemActorMsg((ToCalculatedFieldSystemMsg) msg, true);
                 break;
             case CF_TELEMETRY_MSG:
@@ -315,19 +315,26 @@ public class TenantActor extends RuleChainManagerActor {
             onToDeviceActorMsg(new DeviceDeleteMsg(tenantId, deviceId), true);
             deletedDevices.add(deviceId);
         }
-        if (isRuleEngine && ruleChainsInitialized) {
-            TbActorRef target = getEntityActorRef(msg.getEntityId());
-            if (target != null) {
-                if (msg.getEntityId().getEntityType() == EntityType.RULE_CHAIN) {
-                    RuleChain ruleChain = systemContext.getRuleChainService().
-                            findRuleChainById(tenantId, new RuleChainId(msg.getEntityId().getId()));
-                    if (ruleChain != null && RuleChainType.CORE.equals(ruleChain.getType())) {
-                        visit(ruleChain, target);
+        if (isRuleEngine) {
+            if (ruleChainsInitialized) {
+                TbActorRef target = getEntityActorRef(msg.getEntityId());
+                if (target != null) {
+                    if (msg.getEntityId().getEntityType() == EntityType.RULE_CHAIN) {
+                        RuleChain ruleChain = systemContext.getRuleChainService().
+                                findRuleChainById(tenantId, new RuleChainId(msg.getEntityId().getId()));
+                        if (ruleChain != null && RuleChainType.CORE.equals(ruleChain.getType())) {
+                            visit(ruleChain, target);
+                        }
                     }
+                    target.tellWithHighPriority(msg);
+                } else {
+                    log.debug("[{}] Invalid component lifecycle msg: {}", tenantId, msg);
+                }
+            }
+            if (cfActor != null) {
+                if (msg.getEntityId().getEntityType().isOneOf(EntityType.CALCULATED_FIELD, EntityType.DEVICE, EntityType.ASSET)) {
+                    cfActor.tellWithHighPriority(new CalculatedFieldEntityLifecycleMsg(tenantId, msg));
                 }
-                target.tellWithHighPriority(msg);
-            } else {
-                log.debug("[{}] Invalid component lifecycle msg: {}", tenantId, msg);
             }
         }
     }

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

@@ -28,15 +28,12 @@ import org.thingsboard.server.common.data.DataConstants;
 import org.thingsboard.server.common.data.id.EntityIdFactory;
 import org.thingsboard.server.common.data.id.TenantId;
 import org.thingsboard.server.common.data.queue.QueueConfig;
-import org.thingsboard.server.common.msg.cf.CalculatedFieldEntityLifecycleMsg;
 import org.thingsboard.server.common.msg.cf.CalculatedFieldPartitionChangeMsg;
 import org.thingsboard.server.common.msg.queue.ServiceType;
 import org.thingsboard.server.common.msg.queue.TbCallback;
-import org.thingsboard.server.common.util.ProtoUtils;
 import org.thingsboard.server.dao.tenant.TbTenantProfileCache;
 import org.thingsboard.server.gen.transport.TransportProtos.CalculatedFieldLinkedTelemetryMsgProto;
 import org.thingsboard.server.gen.transport.TransportProtos.CalculatedFieldTelemetryMsgProto;
-import org.thingsboard.server.gen.transport.TransportProtos.ComponentLifecycleMsgProto;
 import org.thingsboard.server.gen.transport.TransportProtos.ToCalculatedFieldMsg;
 import org.thingsboard.server.gen.transport.TransportProtos.ToCalculatedFieldNotificationMsg;
 import org.thingsboard.server.queue.TbQueueConsumer;
@@ -65,8 +62,6 @@ import java.util.concurrent.Future;
 import java.util.concurrent.TimeUnit;
 import java.util.stream.Collectors;
 
-import static org.thingsboard.server.common.util.ProtoUtils.fromProto;
-
 @Service
 @TbRuleEngineComponent
 @Slf4j
@@ -164,9 +159,6 @@ public class DefaultTbCalculatedFieldConsumerService extends AbstractConsumerSer
                         forwardToActorSystem(toCfMsg.getTelemetryMsg(), callback);
                     } else if (toCfMsg.hasLinkedTelemetryMsg()) {
                         forwardToActorSystem(toCfMsg.getLinkedTelemetryMsg(), callback);
-                    } else if (toCfMsg.hasComponentLifecycleMsg()) {
-                        log.trace("[{}] Forwarding component lifecycle message for processing {}", id, toCfMsg.getComponentLifecycleMsg());
-                        forwardToActorSystem(toCfMsg.getComponentLifecycleMsg(), callback);
                     }
                 } catch (Throwable e) {
                     log.warn("[{}] Failed to process message: {}", id, msg, e);
@@ -215,11 +207,7 @@ public class DefaultTbCalculatedFieldConsumerService extends AbstractConsumerSer
     @Override
     protected void handleNotification(UUID id, TbProtoQueueMsg<ToCalculatedFieldNotificationMsg> msg, TbCallback callback) {
         ToCalculatedFieldNotificationMsg toCfNotification = msg.getValue();
-        if (toCfNotification.hasComponentLifecycleMsg()) {
-            handleComponentLifecycleMsg(id, ProtoUtils.fromProto(toCfNotification.getComponentLifecycleMsg()));
-            log.trace("[{}] Forwarding component lifecycle message for processing {}", id, toCfNotification.getComponentLifecycleMsg());
-            forwardToActorSystem(toCfNotification.getComponentLifecycleMsg(), callback);
-        } else if (toCfNotification.hasLinkedTelemetryMsg()) {
+        if (toCfNotification.hasLinkedTelemetryMsg()) {
             forwardToActorSystem(toCfNotification.getLinkedTelemetryMsg(), callback);
         }
     }
@@ -237,11 +225,6 @@ public class DefaultTbCalculatedFieldConsumerService extends AbstractConsumerSer
         actorContext.tell(new CalculatedFieldLinkedTelemetryMsg(tenantId, entityId, linkedMsg, callback));
     }
 
-    private void forwardToActorSystem(ComponentLifecycleMsgProto proto, TbCallback callback) {
-        var msg = fromProto(proto);
-        actorContext.tell(new CalculatedFieldEntityLifecycleMsg(msg.getTenantId(), msg, callback));
-    }
-
     private TenantId toTenantId(long tenantIdMSB, long tenantIdLSB) {
         return TenantId.fromUUID(new UUID(tenantIdMSB, tenantIdLSB));
     }

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

@@ -94,10 +94,8 @@ import org.thingsboard.server.queue.common.MultipleTbQueueCallbackWrapper;
 import org.thingsboard.server.queue.common.TbProtoQueueMsg;
 import org.thingsboard.server.queue.common.TbRuleEngineProducerService;
 import org.thingsboard.server.queue.discovery.PartitionService;
-import org.thingsboard.server.queue.discovery.QueueKey;
 import org.thingsboard.server.queue.discovery.TopicService;
 import org.thingsboard.server.queue.provider.TbQueueProducerProvider;
-import org.thingsboard.server.service.cf.CalculatedFieldProcessingService;
 import org.thingsboard.server.service.gateway_device.GatewayNotificationsService;
 import org.thingsboard.server.service.ota.OtaPackageStateService;
 import org.thingsboard.server.service.profile.TbAssetProfileCache;
@@ -146,10 +144,6 @@ public class DefaultTbClusterService implements TbClusterService {
     @Lazy
     private OtaPackageStateService otaPackageStateService;
 
-    @Autowired
-    @Lazy
-    private CalculatedFieldProcessingService calculatedFieldProcessingService;
-
     private final TopicService topicService;
     private final TbDeviceProfileCache deviceProfileCache;
     private final TbAssetProfileCache assetProfileCache;
@@ -369,13 +363,6 @@ public class DefaultTbClusterService implements TbClusterService {
         toRuleEngineMsgs.incrementAndGet(); // TODO: add separate counter when we will have new ServiceType.CALCULATED_FIELDS
     }
 
-    @Override
-    public void pushNotificationToCalculatedFields(TenantId tenantId, EntityId entityId, ToCalculatedFieldNotificationMsg msg, TbQueueCallback callback) {
-        TopicPartitionInfo tpi = partitionService.resolve(ServiceType.TB_RULE_ENGINE, DataConstants.CF_QUEUE_NAME, tenantId, entityId);
-        producerProvider.getCalculatedFieldsNotificationsMsgProducer().send(tpi, new TbProtoQueueMsg<>(UUID.randomUUID(), msg), callback);
-        toRuleEngineNfs.incrementAndGet();
-    }
-
     @Override
     public void broadcastEntityStateChangeEvent(TenantId tenantId, EntityId entityId, ComponentLifecycleEvent state) {
         log.trace("[{}] Processing {} state change event: {}", tenantId, entityId.getEntityType(), state);
@@ -431,7 +418,6 @@ public class DefaultTbClusterService implements TbClusterService {
     public void onDeviceDeleted(TenantId tenantId, Device device, TbQueueCallback callback) {
         DeviceId deviceId = device.getId();
         gatewayNotificationsService.onDeviceDeleted(device);
-        handleCalculatedFieldEntityDeleted(tenantId, deviceId);
         broadcastEntityDeleteToTransport(tenantId, deviceId, device.getName(), callback);
         sendDeviceStateServiceEvent(tenantId, deviceId, false, false, true);
         broadcastEntityStateChangeEvent(tenantId, deviceId, ComponentLifecycleEvent.DELETED);
@@ -440,7 +426,6 @@ public class DefaultTbClusterService implements TbClusterService {
     @Override
     public void onAssetDeleted(TenantId tenantId, Asset asset, TbQueueCallback callback) {
         AssetId assetId = asset.getId();
-        handleCalculatedFieldEntityDeleted(tenantId, assetId);
         broadcastEntityStateChangeEvent(tenantId, assetId, ComponentLifecycleEvent.DELETED);
     }
 
@@ -604,6 +589,7 @@ public class DefaultTbClusterService implements TbClusterService {
                 || (entityType.equals(EntityType.DEVICE) && msg.getEvent() == ComponentLifecycleEvent.UPDATED)
                 || entityType.equals(EntityType.ENTITY_VIEW)
                 || entityType.equals(EntityType.NOTIFICATION_RULE)
+                || entityType.equals(EntityType.CALCULATED_FIELD)
         ) {
             TbQueueProducer<TbProtoQueueMsg<ToCoreNotificationMsg>> toCoreNfProducer = producerProvider.getTbCoreNotificationsMsgProducer();
             Set<String> tbCoreServices = partitionService.getAllServiceIds(ServiceType.TB_CORE);
@@ -658,38 +644,28 @@ public class DefaultTbClusterService implements TbClusterService {
     public void onDeviceUpdated(Device entity, Device old) {
         var created = old == null;
         broadcastEntityChangeToTransport(entity.getTenantId(), entity.getId(), entity, null);
-        if (old != null) {
+
+        var msg = ComponentLifecycleMsg.builder()
+                .tenantId(entity.getTenantId())
+                .entityId(entity.getId())
+                .profileId(entity.getDeviceProfileId())
+                .name(entity.getName());
+        if (created) {
+            msg.event(ComponentLifecycleEvent.CREATED);
+        } else {
             boolean deviceNameChanged = !entity.getName().equals(old.getName());
             if (deviceNameChanged) {
                 gatewayNotificationsService.onDeviceUpdated(entity, old);
             }
             boolean deviceProfileChanged = !entity.getDeviceProfileId().equals(old.getDeviceProfileId());
-            if (deviceProfileChanged) {
-                ComponentLifecycleMsg msg = ComponentLifecycleMsg.builder()
-                        .tenantId(entity.getTenantId())
-                        .entityId(entity.getId())
-                        .event(ComponentLifecycleEvent.UPDATED)
-                        .oldProfileId(old.getDeviceProfileId())
-                        .profileId(entity.getDeviceProfileId())
-                        .oldName(old.getName())
-                        .name(entity.getName())
-                        .build();
-                broadcastToCalculatedFields(ToCalculatedFieldNotificationMsg.newBuilder().setComponentLifecycleMsg(toProto(msg)).build(), TbQueueCallback.EMPTY);
-            }
             if (deviceNameChanged || deviceProfileChanged) {
                 pushMsgToCore(new DeviceNameOrTypeUpdateMsg(entity.getTenantId(), entity.getId(), entity.getName(), entity.getType()), null);
             }
-        } else {
-            ComponentLifecycleMsg msg = ComponentLifecycleMsg.builder()
-                    .tenantId(entity.getTenantId())
-                    .entityId(entity.getId())
-                    .event(ComponentLifecycleEvent.CREATED)
-                    .profileId(entity.getDeviceProfileId())
-                    .name(entity.getName())
-                    .build();
-            broadcastToCalculatedFields(ToCalculatedFieldNotificationMsg.newBuilder().setComponentLifecycleMsg(toProto(msg)).build(), TbQueueCallback.EMPTY);
+            msg.event(ComponentLifecycleEvent.UPDATED)
+                    .oldProfileId(old.getDeviceProfileId())
+                    .oldName(old.getName());
         }
-        broadcastEntityStateChangeEvent(entity.getTenantId(), entity.getId(), created ? ComponentLifecycleEvent.CREATED : ComponentLifecycleEvent.UPDATED);
+        broadcast(msg.build());
         sendDeviceStateServiceEvent(entity.getTenantId(), entity.getId(), created, !created, false);
         otaPackageStateService.update(entity, old);
     }
@@ -697,48 +673,29 @@ public class DefaultTbClusterService implements TbClusterService {
     @Override
     public void onAssetUpdated(Asset entity, Asset old) {
         var created = old == null;
-        if (old != null) {
-            boolean assetTypeChanged = !entity.getAssetProfileId().equals(old.getAssetProfileId());
-            if (assetTypeChanged) {
-                ComponentLifecycleMsg msg = ComponentLifecycleMsg.builder()
-                        .tenantId(entity.getTenantId())
-                        .entityId(entity.getId())
-                        .event(ComponentLifecycleEvent.UPDATED)
-                        .oldProfileId(old.getAssetProfileId())
-                        .profileId(entity.getAssetProfileId())
-                        .oldName(old.getName())
-                        .name(entity.getName())
-                        .build();
-                broadcastToCalculatedFields(ToCalculatedFieldNotificationMsg.newBuilder().setComponentLifecycleMsg(toProto(msg)).build(), TbQueueCallback.EMPTY);
-            }
+        var msg = ComponentLifecycleMsg.builder()
+                .tenantId(entity.getTenantId())
+                .entityId(entity.getId())
+                .profileId(entity.getAssetProfileId())
+                .name(entity.getName());
+        if (created) {
+            msg.event(ComponentLifecycleEvent.CREATED);
         } else {
-            ComponentLifecycleMsg msg = ComponentLifecycleMsg.builder()
-                    .tenantId(entity.getTenantId())
-                    .entityId(entity.getId())
-                    .event(ComponentLifecycleEvent.CREATED)
-                    .profileId(entity.getAssetProfileId())
-                    .name(entity.getName())
-                    .build();
-            broadcastToCalculatedFields(ToCalculatedFieldNotificationMsg.newBuilder().setComponentLifecycleMsg(toProto(msg)).build(), TbQueueCallback.EMPTY);
+            msg.event(ComponentLifecycleEvent.UPDATED)
+                    .oldProfileId(old.getAssetProfileId())
+                    .oldName(old.getName());
         }
-        broadcastEntityStateChangeEvent(entity.getTenantId(), entity.getId(), created ? ComponentLifecycleEvent.CREATED : ComponentLifecycleEvent.UPDATED);
+        broadcast(msg.build());
     }
 
     @Override
     public void onCalculatedFieldUpdated(CalculatedField calculatedField, CalculatedField oldCalculatedField, TbQueueCallback callback) {
-        var msg = toProto(new ComponentLifecycleMsg(calculatedField.getTenantId(), calculatedField.getId(), oldCalculatedField == null ? ComponentLifecycleEvent.CREATED : ComponentLifecycleEvent.UPDATED));
-        onCalculatedFieldLifecycleMsg(msg, callback);
+        broadcastEntityStateChangeEvent(calculatedField.getTenantId(), calculatedField.getId(), oldCalculatedField == null ? ComponentLifecycleEvent.CREATED : ComponentLifecycleEvent.UPDATED);
     }
 
     @Override
     public void onCalculatedFieldDeleted(CalculatedField calculatedField, TbQueueCallback callback) {
-        var msg = toProto(new ComponentLifecycleMsg(calculatedField.getTenantId(), calculatedField.getId(), ComponentLifecycleEvent.DELETED));
-        onCalculatedFieldLifecycleMsg(msg, callback);
-    }
-
-    private void onCalculatedFieldLifecycleMsg(ComponentLifecycleMsgProto msg, TbQueueCallback callback) {
-        broadcastToCalculatedFields(ToCalculatedFieldNotificationMsg.newBuilder().setComponentLifecycleMsg(msg).build(), callback);
-        broadcastToCore(ToCoreNotificationMsg.newBuilder().setComponentLifecycle(msg).build());
+        broadcastEntityStateChangeEvent(calculatedField.getTenantId(), calculatedField.getId(), ComponentLifecycleEvent.DELETED);
     }
 
     @Override
@@ -868,8 +825,4 @@ public class DefaultTbClusterService implements TbClusterService {
         }
     }
 
-    private void handleCalculatedFieldEntityDeleted(TenantId tenantId, EntityId entityId) {
-        ComponentLifecycleMsg msg = new ComponentLifecycleMsg(tenantId, entityId, ComponentLifecycleEvent.DELETED);
-        broadcastToCalculatedFields(ToCalculatedFieldNotificationMsg.newBuilder().setComponentLifecycleMsg(toProto(msg)).build(), TbQueueCallback.EMPTY);
-    }
 }

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

@@ -29,7 +29,6 @@ import org.thingsboard.server.common.data.id.TenantId;
 import org.thingsboard.server.common.data.plugin.ComponentLifecycleEvent;
 import org.thingsboard.server.common.data.queue.Queue;
 import org.thingsboard.server.common.data.rpc.RpcError;
-import org.thingsboard.server.common.data.util.CollectionsUtil;
 import org.thingsboard.server.common.msg.plugin.ComponentLifecycleMsg;
 import org.thingsboard.server.common.msg.queue.ServiceType;
 import org.thingsboard.server.common.msg.queue.TbCallback;
@@ -234,7 +233,7 @@ public class DefaultTbRuleEngineConsumerService extends AbstractConsumerService<
             if (event.getEvent() == ComponentLifecycleEvent.DELETED) {
                 List<QueueKey> toRemove = consumers.keySet().stream()
                         .filter(queueKey -> queueKey.getTenantId().equals(event.getTenantId()))
-                        .collect(Collectors.toList());
+                        .toList();
                 toRemove.forEach(queueKey -> {
                     removeConsumer(queueKey).ifPresent(consumer -> consumer.delete(false));
                 });

common/cluster-api/src/main/java/org/thingsboard/server/cluster/TbClusterService.java

@@ -85,8 +85,6 @@ public interface TbClusterService extends TbQueueClusterService {
 
     void pushMsgToCalculatedFields(TopicPartitionInfo tpi, UUID msgId, ToCalculatedFieldMsg msg, TbQueueCallback callback);
 
-    void pushNotificationToCalculatedFields(TenantId tenantId, EntityId entityId, TransportProtos.ToCalculatedFieldNotificationMsg msg, TbQueueCallback callback);
-
     void broadcastEntityStateChangeEvent(TenantId tenantId, EntityId entityId, ComponentLifecycleEvent state);
 
     void onDeviceProfileChange(DeviceProfile deviceProfile, DeviceProfile oldDeviceProfile, TbQueueCallback callback);

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

@@ -86,4 +86,15 @@ public enum EntityType {
         this.tableName = tableName;
     }
 
+    public boolean isOneOf(EntityType... types) {
+        if (types == null) {
+            return false;
+        }
+        for (EntityType type : types) {
+            if (this == type) {
+                return true;
+            }
+        }
+        return false;
+    }
 }

common/message/src/main/java/org/thingsboard/server/common/msg/cf/CalculatedFieldEntityLifecycleMsg.java

@@ -16,19 +16,16 @@
 package org.thingsboard.server.common.msg.cf;
 
 import lombok.Data;
-import org.thingsboard.server.common.data.cf.CalculatedField;
 import org.thingsboard.server.common.data.id.TenantId;
 import org.thingsboard.server.common.msg.MsgType;
 import org.thingsboard.server.common.msg.ToCalculatedFieldSystemMsg;
 import org.thingsboard.server.common.msg.plugin.ComponentLifecycleMsg;
-import org.thingsboard.server.common.msg.queue.TbCallback;
 
 @Data
 public class CalculatedFieldEntityLifecycleMsg implements ToCalculatedFieldSystemMsg {
 
     private final TenantId tenantId;
     private final ComponentLifecycleMsg data;
-    private final TbCallback callback;
 
     @Override
     public MsgType getMsgType() {

common/proto/src/main/proto/queue.proto

@@ -1674,14 +1674,12 @@ message ToEdgeEventNotificationMsg {
 }
 
 message ToCalculatedFieldMsg {
-  ComponentLifecycleMsgProto componentLifecycleMsg = 1;
-  CalculatedFieldTelemetryMsgProto telemetryMsg = 2;
-  CalculatedFieldLinkedTelemetryMsgProto linkedTelemetryMsg = 3;
+  CalculatedFieldTelemetryMsgProto telemetryMsg = 1;
+  CalculatedFieldLinkedTelemetryMsgProto linkedTelemetryMsg = 2;
 }
 
 message ToCalculatedFieldNotificationMsg {
-  ComponentLifecycleMsgProto componentLifecycleMsg = 1;
-  CalculatedFieldLinkedTelemetryMsgProto linkedTelemetryMsg = 2;
+  CalculatedFieldLinkedTelemetryMsgProto linkedTelemetryMsg = 1;
 }
 
 /* Messages that are handled by ThingsBoard RuleEngine Service */

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

@@ -24,7 +24,6 @@ import org.thingsboard.server.queue.discovery.QueueKey;
 
 import java.io.Serial;
 import java.util.Collection;
-import java.util.Collections;
 import java.util.Map;
 import java.util.Set;
 import java.util.stream.Collectors;