| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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.apache.atlas.repository.store.graph.v1; |
| |
| import org.apache.atlas.RequestContext; |
| import org.apache.atlas.repository.graphdb.AtlasGraph; |
| import org.apache.atlas.DeleteType; |
| import org.apache.atlas.tasks.TaskManagement; |
| import org.apache.atlas.type.AtlasTypeRegistry; |
| import org.apache.atlas.util.AtlasRepositoryConfiguration; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| import org.springframework.stereotype.Component; |
| |
| import javax.inject.Inject; |
| import javax.inject.Singleton; |
| |
| @Singleton |
| @Component |
| public class DeleteHandlerDelegate { |
| private static final Logger LOG = LoggerFactory.getLogger(DeleteHandlerDelegate.class); |
| |
| private final SoftDeleteHandlerV1 softDeleteHandler; |
| private final HardDeleteHandlerV1 hardDeleteHandler; |
| private final DeleteHandlerV1 defaultHandler; |
| private final AtlasGraph graph; |
| private final TaskManagement taskManagement; |
| |
| @Inject |
| public DeleteHandlerDelegate(AtlasGraph graph, AtlasTypeRegistry typeRegistry, TaskManagement taskManagement) { |
| this.graph = graph; |
| this.taskManagement = taskManagement; |
| this.softDeleteHandler = new SoftDeleteHandlerV1(graph, typeRegistry, taskManagement); |
| this.hardDeleteHandler = new HardDeleteHandlerV1(graph, typeRegistry, taskManagement); |
| this.defaultHandler = getDefaultConfiguredHandler(typeRegistry); |
| } |
| |
| public DeleteHandlerV1 getHandler() { |
| return getHandler(RequestContext.get().getDeleteType()); |
| } |
| |
| public DeleteHandlerV1 getHandler(DeleteType deleteType) { |
| if (deleteType == null) { |
| deleteType = DeleteType.DEFAULT; |
| } |
| |
| switch (deleteType) { |
| case SOFT: |
| return softDeleteHandler; |
| |
| case HARD: |
| return hardDeleteHandler; |
| |
| default: |
| return defaultHandler; |
| } |
| } |
| |
| private DeleteHandlerV1 getDefaultConfiguredHandler(AtlasTypeRegistry typeRegistry) { |
| DeleteHandlerV1 ret = null; |
| |
| try { |
| Class handlerFromProperties = AtlasRepositoryConfiguration.getDeleteHandlerV1Impl(); |
| |
| LOG.info("Default delete handler set to: {}", handlerFromProperties.getName()); |
| |
| ret = (DeleteHandlerV1) handlerFromProperties.getConstructor(AtlasGraph.class, AtlasTypeRegistry.class, TaskManagement.class) |
| .newInstance(this.graph, typeRegistry, taskManagement); |
| } catch (Exception ex) { |
| LOG.error("Error instantiating default delete handler. Defaulting to: {}", softDeleteHandler.getClass().getName(), ex); |
| |
| ret = softDeleteHandler; |
| } |
| |
| return ret; |
| } |
| } |