getEntityDataInfo API call

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

@@ -40,6 +40,7 @@ import org.thingsboard.server.common.data.id.TenantId;
 import org.thingsboard.server.common.data.page.PageData;
 import org.thingsboard.server.common.data.page.PageLink;
 import org.thingsboard.server.common.data.sync.vc.EntityDataDiff;
+import org.thingsboard.server.common.data.sync.vc.EntityDataInfo;
 import org.thingsboard.server.common.data.sync.vc.EntityVersion;
 import org.thingsboard.server.common.data.sync.vc.VersionCreationResult;
 import org.thingsboard.server.common.data.sync.vc.VersionLoadResult;
@@ -237,6 +238,18 @@ public class EntitiesVersionControlController extends BaseController {
         }
     }
 
+    @GetMapping("/info/{versionId}/{entityType}/{internalEntityUuid}")
+    public DeferredResult<EntityDataInfo> getEntityDataInfo(@PathVariable String versionId,
+                                                            @PathVariable EntityType entityType,
+                                                            @PathVariable UUID internalEntityUuid) throws ThingsboardException {
+        try {
+            EntityId entityId = EntityIdFactory.getByTypeAndUuid(entityType, internalEntityUuid);
+            return wrapFuture(versionControlService.getEntityDataInfo(getCurrentUser(), entityId, versionId));
+        } catch (Exception e) {
+            throw handleException(e);
+        }
+    }
+
     @GetMapping("/diff/{branch}/{entityType}/{internalEntityUuid}")
     public DeferredResult<EntityDataDiff> compareEntityDataToVersion(@PathVariable String branch,
                                                                      @PathVariable EntityType entityType,

application/src/main/java/org/thingsboard/server/service/sync/vc/DefaultEntitiesVersionControlService.java

@@ -44,6 +44,7 @@ import org.thingsboard.server.common.data.sync.ie.EntityExportData;
 import org.thingsboard.server.common.data.sync.ie.EntityExportSettings;
 import org.thingsboard.server.common.data.sync.ie.EntityImportResult;
 import org.thingsboard.server.common.data.sync.ie.EntityImportSettings;
+import org.thingsboard.server.common.data.sync.vc.EntityDataInfo;
 import org.thingsboard.server.common.data.sync.vc.RepositorySettings;
 import org.thingsboard.server.common.data.sync.vc.EntityDataDiff;
 import org.thingsboard.server.common.data.sync.vc.EntityVersion;
@@ -341,6 +342,13 @@ public class DefaultEntitiesVersionControlService implements EntitiesVersionCont
                 }, MoreExecutors.directExecutor());
     }
 
+    @Override
+    public ListenableFuture<EntityDataInfo> getEntityDataInfo(SecurityUser user, EntityId entityId, String versionId) {
+        return Futures.transform(gitServiceQueue.getEntity(user.getTenantId(), versionId, entityId),
+                entity -> new EntityDataInfo(entity.getRelations() != null, entity.getAttributes() != null), MoreExecutors.directExecutor());
+    }
+
+
     @Override
     public ListenableFuture<List<String>> listBranches(TenantId tenantId) throws Exception {
         return gitServiceQueue.listBranches(tenantId);

application/src/main/java/org/thingsboard/server/service/sync/vc/EntitiesVersionControlService.java

@@ -22,6 +22,7 @@ import org.thingsboard.server.common.data.id.TenantId;
 import org.thingsboard.server.common.data.page.PageData;
 import org.thingsboard.server.common.data.page.PageLink;
 import org.thingsboard.server.common.data.sync.vc.EntityDataDiff;
+import org.thingsboard.server.common.data.sync.vc.EntityDataInfo;
 import org.thingsboard.server.service.security.model.SecurityUser;
 import org.thingsboard.server.common.data.sync.vc.RepositorySettings;
 import org.thingsboard.server.common.data.sync.vc.EntityVersion;
@@ -62,4 +63,6 @@ public interface EntitiesVersionControlService {
     ListenableFuture<Void> checkVersionControlAccess(TenantId tenantId, RepositorySettings settings) throws Exception;
 
     ListenableFuture<VersionCreationResult> autoCommit(SecurityUser user, EntityId entityId) throws Exception;
+
+    ListenableFuture<EntityDataInfo> getEntityDataInfo(SecurityUser user, EntityId entityId, String versionId);
 }

common/data/src/main/java/org/thingsboard/server/common/data/sync/vc/EntityDataInfo.java

@@ -0,0 +1,28 @@
+/**
+ * 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.sync.vc;
+
+import lombok.AllArgsConstructor;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+@Data
+@AllArgsConstructor
+@NoArgsConstructor
+public class EntityDataInfo {
+    boolean hasRelations;
+    boolean hasAttributes;
+}