| /* |
| * 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; |
| |
| import com.google.inject.Inject; |
| import com.thinkaurelius.titan.core.TitanGraph; |
| import org.aopalliance.intercept.MethodInterceptor; |
| import org.aopalliance.intercept.MethodInvocation; |
| import org.apache.atlas.repository.graph.GraphProvider; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| public class GraphTransactionInterceptor implements MethodInterceptor { |
| private static final Logger LOG = LoggerFactory.getLogger(GraphTransactionInterceptor.class); |
| private TitanGraph titanGraph; |
| |
| @Inject |
| GraphProvider<TitanGraph> graphProvider; |
| |
| public Object invoke(MethodInvocation invocation) throws Throwable { |
| if (titanGraph == null) { |
| titanGraph = graphProvider.get(); |
| } |
| |
| try { |
| Object response = invocation.proceed(); |
| titanGraph.commit(); |
| LOG.debug("graph commit"); |
| return response; |
| } catch (Throwable t) { |
| titanGraph.rollback(); |
| LOG.error("graph rollback due to exception ", t); |
| throw t; |
| } |
| } |
| } |