| /* |
| * 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.seatunnel.connectors.seatunnel.jdbc.internal.xa; |
| |
| import org.apache.seatunnel.api.common.JobContext; |
| import org.apache.seatunnel.api.sink.SinkWriter; |
| |
| import javax.transaction.xa.Xid; |
| |
| import java.io.Serializable; |
| import java.security.SecureRandom; |
| |
| /** |
| * {@link Xid} generator. |
| */ |
| public interface XidGenerator |
| extends Serializable, AutoCloseable { |
| |
| Xid generateXid(JobContext context, SinkWriter.Context sinkContext, long checkpointId); |
| |
| default void open() {} |
| |
| /** |
| * @return true if the provided transaction belongs to this subtask |
| */ |
| boolean belongsToSubtask(Xid xid, JobContext context, SinkWriter.Context sinkContext); |
| |
| @Override |
| default void close() {} |
| |
| /** |
| * Creates a {@link XidGenerator} that generates {@link Xid xids} from: |
| * |
| * <ol> |
| * <li>job id |
| * <li>subtask index |
| * <li>checkpoint id |
| * <li>four random bytes generated using {@link SecureRandom}) |
| * </ol> |
| * |
| * <p>Each created {@link XidGenerator} instance MUST be used for only one Sink instance |
| * (otherwise Xids could collide). |
| */ |
| static XidGenerator semanticXidGenerator() { |
| return new SemanticXidGenerator(); |
| } |
| } |