| /* |
| * 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.hudi.integ.testsuite.dag.nodes; |
| |
| import org.apache.hudi.common.table.HoodieTableMetaClient; |
| import org.apache.hudi.common.table.timeline.HoodieInstant; |
| import org.apache.hudi.common.util.Option; |
| import org.apache.hudi.integ.testsuite.configuration.DeltaConfig.Config; |
| import org.apache.hudi.integ.testsuite.dag.ExecutionContext; |
| |
| /** |
| * A rollback node in the DAG helps to perform rollback operations. |
| */ |
| public class RollbackNode extends DagNode<Option<HoodieInstant>> { |
| |
| public RollbackNode(Config config) { |
| this.config = config; |
| } |
| |
| /** |
| * Method helps to rollback the last commit instant in the timeline, if it has one. |
| * |
| * @param executionContext Execution context to perform this rollback |
| * @throws Exception will be thrown if any error occurred |
| */ |
| @Override |
| public void execute(ExecutionContext executionContext) throws Exception { |
| log.info("Executing rollback node {}", this.getName()); |
| // Can only be done with an instantiation of a new WriteClient hence cannot be done during DeltaStreamer |
| // testing for now |
| HoodieTableMetaClient metaClient = new HoodieTableMetaClient(executionContext.getHoodieTestSuiteWriter().getConfiguration(), |
| executionContext.getHoodieTestSuiteWriter().getCfg().targetBasePath); |
| Option<HoodieInstant> lastInstant = metaClient.getActiveTimeline().getCommitsTimeline().lastInstant(); |
| if (lastInstant.isPresent()) { |
| log.info("Rolling back last instant {}", lastInstant.get()); |
| executionContext.getHoodieTestSuiteWriter().getWriteClient(this).rollback(lastInstant.get().getTimestamp()); |
| this.result = lastInstant; |
| } |
| } |
| |
| } |