content: /*
   * Copyright 2013-2023 the original author or 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
   *
   *      https://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 com.alibaba.cloud.examples.tx;
  
  import org.apache.rocketmq.client.producer.LocalTransactionState;
  import org.apache.rocketmq.client.producer.TransactionListener;
  import org.apache.rocketmq.common.message.Message;
  import org.apache.rocketmq.common.message.MessageExt;
  
  import org.springframework.stereotype.Component;
  
  /**
   * @author <a href="mailto:fangjian0423@gmail.com">Jim</a>
   */
  @Component("myTransactionListener")
  public class TransactionListenerImpl implements TransactionListener {
  
  	/**
  	 * Execute local transaction.
  	 * @param msg messages
  	 * @param arg message args
  	 * @return Transaction state
  	 */
  	@Override
  	public LocalTransactionState executeLocalTransaction(Message msg, Object arg) {
  		Object num = msg.getProperty("test");
  
  		if ("1".equals(num)) {
  			System.out.println("executer: " + new String(msg.getBody()) + " unknown");
  			return LocalTransactionState.UNKNOW;
  		}
  		else if ("2".equals(num)) {
  			System.out.println("executer: " + new String(msg.getBody()) + " rollback");
  			return LocalTransactionState.ROLLBACK_MESSAGE;
  		}
  		System.out.println("executer: " + new String(msg.getBody()) + " commit");
  		return LocalTransactionState.COMMIT_MESSAGE;
  	}
  
  	/**
  	 * MQ check back local transaction states.
  	 * @param msg messages
  	 * @return Transaction state
  	 */
  	@Override
  	public LocalTransactionState checkLocalTransaction(MessageExt msg) {
  		System.out.println("check: " + new String(msg.getBody()));
  		return LocalTransactionState.COMMIT_MESSAGE;
  	}
  
  }
  