| /* |
| * 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.rocketmq.samples.springboot; |
| |
| import org.apache.rocketmq.client.producer.SendCallback; |
| import org.apache.rocketmq.client.producer.SendResult; |
| import org.apache.rocketmq.samples.springboot.domain.OrderPaidEvent; |
| import org.apache.rocketmq.spring.annotation.RocketMQTransactionListener; |
| import org.apache.rocketmq.spring.core.RocketMQLocalTransactionListener; |
| import org.apache.rocketmq.spring.core.RocketMQLocalTransactionState; |
| import org.apache.rocketmq.spring.core.RocketMQTemplate; |
| import org.apache.rocketmq.spring.support.RocketMQHeaders; |
| import org.springframework.beans.factory.annotation.Value; |
| import org.springframework.boot.CommandLineRunner; |
| import org.springframework.boot.SpringApplication; |
| import org.springframework.boot.autoconfigure.SpringBootApplication; |
| import org.springframework.messaging.Message; |
| import org.springframework.messaging.MessagingException; |
| import org.springframework.messaging.support.MessageBuilder; |
| |
| import javax.annotation.Resource; |
| import java.math.BigDecimal; |
| import java.util.concurrent.ConcurrentHashMap; |
| import java.util.concurrent.atomic.AtomicInteger; |
| |
| /** |
| * Producer, using RocketMQTemplate sends a variety of messages |
| */ |
| @SpringBootApplication |
| public class ProducerApplication implements CommandLineRunner { |
| private static final String TX_PGROUP_NAME = "myTxProducerGroup"; |
| @Resource |
| private RocketMQTemplate rocketMQTemplate; |
| @Value("${demo.rocketmq.transTopic}") |
| private String springTransTopic; |
| @Value("${demo.rocketmq.topic}") |
| private String springTopic; |
| @Value("${demo.rocketmq.orderTopic}") |
| private String orderPaidTopic; |
| @Value("${demo.rocketmq.msgExtTopic}") |
| private String msgExtTopic; |
| |
| public static void main(String[] args) { |
| SpringApplication.run(ProducerApplication.class, args); |
| } |
| |
| @Override |
| public void run(String... args) throws Exception { |
| // Send string |
| SendResult sendResult = rocketMQTemplate.syncSend(springTopic, "Hello, World!"); |
| System.out.printf("syncSend1 to topic %s sendResult=%s %n", springTopic, sendResult); |
| |
| // Send string with spring Message |
| sendResult = rocketMQTemplate.syncSend(springTopic, MessageBuilder.withPayload("Hello, World! I'm from spring message").build()); |
| System.out.printf("syncSend2 to topic %s sendResult=%s %n", springTopic, sendResult); |
| |
| // Send user-defined object |
| rocketMQTemplate.asyncSend(orderPaidTopic, new OrderPaidEvent("T_001", new BigDecimal("88.00")), new SendCallback() { |
| public void onSuccess(SendResult var1) { |
| System.out.printf("async onSucess SendResult=%s %n", var1); |
| } |
| |
| public void onException(Throwable var1) { |
| System.out.printf("async onException Throwable=%s %n", var1); |
| } |
| |
| }); |
| |
| // Send message with special tag |
| rocketMQTemplate.convertAndSend(msgExtTopic + ":tag0", "I'm from tag0"); // tag0 will not be consumer-selected |
| System.out.printf("syncSend topic %s tag %s %n", msgExtTopic, "tag0"); |
| rocketMQTemplate.convertAndSend(msgExtTopic + ":tag1", "I'm from tag1"); |
| System.out.printf("syncSend topic %s tag %s %n", msgExtTopic, "tag1"); |
| |
| // Send transactional messages |
| testTransaction(); |
| } |
| |
| |
| private void testTransaction() throws MessagingException { |
| String[] tags = new String[]{"TagA", "TagB", "TagC", "TagD", "TagE"}; |
| for (int i = 0; i < 10; i++) { |
| try { |
| |
| Message msg = MessageBuilder.withPayload("Hello RocketMQ " + i). |
| setHeader(RocketMQHeaders.KEYS, "KEY_" + i).build(); |
| SendResult sendResult = rocketMQTemplate.sendMessageInTransaction(TX_PGROUP_NAME, |
| springTransTopic + ":" + tags[i % tags.length], msg, null); |
| System.out.printf("------ send Transactional msg body = %s , sendResult=%s %n", |
| msg.getPayload(), sendResult.getSendStatus()); |
| |
| Thread.sleep(10); |
| } catch (Exception e) { |
| e.printStackTrace(); |
| } |
| } |
| } |
| |
| @RocketMQTransactionListener(txProducerGroup = TX_PGROUP_NAME) |
| class TransactionListenerImpl implements RocketMQLocalTransactionListener { |
| private AtomicInteger transactionIndex = new AtomicInteger(0); |
| |
| private ConcurrentHashMap<String, Integer> localTrans = new ConcurrentHashMap<String, Integer>(); |
| |
| @Override |
| public RocketMQLocalTransactionState executeLocalTransaction(Message msg, Object arg) { |
| String transId = (String)msg.getHeaders().get(RocketMQHeaders.TRANSACTION_ID); |
| System.out.printf("#### executeLocalTransaction is executed, msgTransactionId=%s %n", |
| transId); |
| int value = transactionIndex.getAndIncrement(); |
| int status = value % 3; |
| localTrans.put(transId, status); |
| if (status == 0) { |
| // Return local transaction with success(commit), in this case, |
| // this message will not be checked in checkLocalTransaction() |
| System.out.printf(" # COMMIT # Simulating msg %s related local transaction exec succeeded! ### %n", msg.getPayload()); |
| return RocketMQLocalTransactionState.COMMIT; |
| } |
| |
| if (status == 1) { |
| // Return local transaction with failure(rollback) , in this case, |
| // this message will not be checked in checkLocalTransaction() |
| System.out.printf(" # ROLLBACK # Simulating %s related local transaction exec failed! %n", msg.getPayload()); |
| return RocketMQLocalTransactionState.ROLLBACK; |
| } |
| |
| System.out.printf(" # UNKNOW # Simulating %s related local transaction exec UNKNOWN! \n"); |
| return RocketMQLocalTransactionState.UNKNOWN; |
| } |
| |
| @Override |
| public RocketMQLocalTransactionState checkLocalTransaction(Message msg) { |
| String transId = (String)msg.getHeaders().get(RocketMQHeaders.TRANSACTION_ID); |
| RocketMQLocalTransactionState retState = RocketMQLocalTransactionState.COMMIT; |
| Integer status = localTrans.get(transId); |
| if (null != status) { |
| switch (status) { |
| case 0: |
| retState = RocketMQLocalTransactionState.UNKNOWN; |
| break; |
| case 1: |
| retState = RocketMQLocalTransactionState.COMMIT; |
| break; |
| case 2: |
| retState = RocketMQLocalTransactionState.ROLLBACK; |
| break; |
| } |
| } |
| System.out.printf("------ !!! checkLocalTransaction is executed once," + |
| " msgTransactionId=%s, TransactionState=%s status=%s %n", |
| transId, retState, status); |
| return retState; |
| } |
| } |
| |
| } |