Java tutorial
/* * 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.jms; import com.alibaba.rocketmq.client.ClientConfig; import com.alibaba.rocketmq.client.exception.MQClientException; import com.alibaba.rocketmq.client.producer.DefaultMQProducer; import com.alibaba.rocketmq.client.producer.SendResult; import com.alibaba.rocketmq.client.producer.SendStatus; import java.util.UUID; import javax.jms.CompletionListener; import javax.jms.Destination; import javax.jms.JMSException; import javax.jms.JMSRuntimeException; import javax.jms.Message; import javax.jms.MessageProducer; import org.apache.rocketmq.jms.msg.RocketMQMessage; import org.apache.rocketmq.jms.support.JmsHelper; import org.apache.rocketmq.jms.support.MessageConverter; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import static java.lang.String.format; import static javax.jms.Message.DEFAULT_DELIVERY_MODE; import static javax.jms.Message.DEFAULT_PRIORITY; import static javax.jms.Message.DEFAULT_TIME_TO_LIVE; import static org.apache.commons.lang.exception.ExceptionUtils.getStackTrace; import static org.apache.rocketmq.jms.Constant.DEFAULT_JMS_TYPE; import static org.apache.rocketmq.jms.Constant.JMS_DELIVERY_MODE; import static org.apache.rocketmq.jms.Constant.JMS_DESTINATION; import static org.apache.rocketmq.jms.Constant.JMS_EXPIRATION; import static org.apache.rocketmq.jms.Constant.JMS_PRIORITY; import static org.apache.rocketmq.jms.Constant.JMS_TIMESTAMP; import static org.apache.rocketmq.jms.Constant.JMS_TYPE; public class RocketMQProducer implements MessageProducer { private static final Logger log = LoggerFactory.getLogger(RocketMQProducer.class); private RocketMQSession session; private final DefaultMQProducer mqProducer; private Destination destination; public RocketMQProducer(RocketMQSession session, Destination destination) { this.session = session; this.destination = destination; this.mqProducer = new DefaultMQProducer(UUID.randomUUID().toString()); ClientConfig clientConfig = this.session.getConnection().getClientConfig(); this.mqProducer.setNamesrvAddr(clientConfig.getNamesrvAddr()); this.mqProducer.setInstanceName(clientConfig.getInstanceName()); try { this.mqProducer.start(); } catch (MQClientException e) { throw new JMSRuntimeException(format("Fail to start producer, error msg:%s", getStackTrace(e))); } } @Override public void setDisableMessageID(boolean value) throws JMSException { //todo } @Override public boolean getDisableMessageID() throws JMSException { //todo return false; } @Override public void setDisableMessageTimestamp(boolean value) throws JMSException { //todo } @Override public boolean getDisableMessageTimestamp() throws JMSException { //todo return false; } @Override public void setDeliveryMode(int deliveryMode) throws JMSException { //todo } @Override public int getDeliveryMode() throws JMSException { //todo return 0; } @Override public void setPriority(int defaultPriority) throws JMSException { //todo } @Override public int getPriority() throws JMSException { //todo return 0; } @Override public void setTimeToLive(long timeToLive) throws JMSException { //todo } @Override public long getTimeToLive() throws JMSException { //todo return 0; } @Override public void setDeliveryDelay(long deliveryDelay) throws JMSException { //todo } @Override public long getDeliveryDelay() throws JMSException { //todo return 0; } @Override public Destination getDestination() throws JMSException { //todo return null; } @Override public void close() throws JMSException { this.mqProducer.shutdown(); } @Override public void send(Message message) throws JMSException { this.send(this.destination, message); } @Override public void send(Message message, int deliveryMode, int priority, long timeToLive) throws JMSException { this.send(this.destination, message, deliveryMode, priority, timeToLive); } @Override public void send(Destination destination, Message message) throws JMSException { //todo: DEFAULT_TIME_TO_LIVE is zero which means message never expires. This feature is not supported by RMQ now. this.send(destination, message, DEFAULT_DELIVERY_MODE, DEFAULT_PRIORITY, DEFAULT_TIME_TO_LIVE); } @Override public void send(Destination destination, Message message, int deliveryMode, int priority, long timeToLive) throws JMSException { String topicName = JmsHelper.getTopicName(destination); com.alibaba.rocketmq.common.message.Message rmqMsg = createRmqMessage(message, topicName); sendSync(rmqMsg); } private void sendSync(com.alibaba.rocketmq.common.message.Message rmqMsg) throws JMSException { SendResult sendResult; try { sendResult = mqProducer.send(rmqMsg); } catch (Exception e) { throw new JMSException(format("Fail to send message. Error: %s", getStackTrace(e))); } if (sendResult != null && sendResult.getSendStatus() == SendStatus.SEND_OK) { log.debug("Success to send message[key={}]", rmqMsg.getKeys()); return; } else { throw new JMSException( format("Sending message error with result status:%s", sendResult.getSendStatus().name())); } } private void sendAsync(com.alibaba.rocketmq.common.message.Message rmqMsg, CompletionListener completionListener) throws JMSException { try { mqProducer.send(rmqMsg, new SendCompletionListener(completionListener)); } catch (Exception e) { throw new JMSException(format("Fail to send message. Error: %s", getStackTrace(e))); } } private com.alibaba.rocketmq.common.message.Message createRmqMessage(Message message, String topicName) throws JMSException { RocketMQMessage jmsMsg = (RocketMQMessage) message; initJMSHeaders(jmsMsg, destination); com.alibaba.rocketmq.common.message.Message rmqMsg = null; try { rmqMsg = MessageConverter.convert2RMQMessage(jmsMsg); } catch (Exception e) { throw new JMSException(format("Fail to convert to RocketMQ message. Error: %s", getStackTrace(e))); } return rmqMsg; } /** * Init the JmsMessage Headers. * <p/> * <P>JMS providers init message's headers. Do not allow user to set these by yourself. * * @param rmqJmsMsg message * @param destination * @throws javax.jms.JMSException * @see <CODE>Destination</CODE> */ private void initJMSHeaders(RocketMQMessage rmqJmsMsg, Destination destination) throws JMSException { //JMS_DESTINATION default:"topic:message" rmqJmsMsg.setHeader(JMS_DESTINATION, destination); //JMS_DELIVERY_MODE default : PERSISTENT rmqJmsMsg.setHeader(JMS_DELIVERY_MODE, javax.jms.Message.DEFAULT_DELIVERY_MODE); //JMS_TIMESTAMP default : current time rmqJmsMsg.setHeader(JMS_TIMESTAMP, System.currentTimeMillis()); //JMS_EXPIRATION default : 3 days //JMS_EXPIRATION = currentTime + time_to_live rmqJmsMsg.setHeader(JMS_EXPIRATION, System.currentTimeMillis() + DEFAULT_TIME_TO_LIVE); //JMS_PRIORITY default : 4 rmqJmsMsg.setHeader(JMS_PRIORITY, javax.jms.Message.DEFAULT_PRIORITY); //JMS_TYPE default : ons(open notification service) rmqJmsMsg.setHeader(JMS_TYPE, DEFAULT_JMS_TYPE); //JMS_REPLY_TO,JMS_CORRELATION_ID default : null //JMS_MESSAGE_ID is set by sendResult. //JMS_REDELIVERED is set by broker. } @Override public void send(Message message, CompletionListener completionListener) throws JMSException { this.send(this.destination, message, DEFAULT_DELIVERY_MODE, DEFAULT_PRIORITY, DEFAULT_TIME_TO_LIVE, completionListener); } @Override public void send(Message message, int deliveryMode, int priority, long timeToLive, CompletionListener completionListener) throws JMSException { this.send(this.destination, message, DEFAULT_DELIVERY_MODE, DEFAULT_PRIORITY, DEFAULT_TIME_TO_LIVE, completionListener); } @Override public void send(Destination destination, Message message, CompletionListener completionListener) throws JMSException { this.send(destination, message, DEFAULT_DELIVERY_MODE, DEFAULT_PRIORITY, DEFAULT_TIME_TO_LIVE, completionListener); } @Override public void send(Destination destination, Message message, int deliveryMode, int priority, long timeToLive, CompletionListener completionListener) throws JMSException { String topicName = JmsHelper.getTopicName(destination); com.alibaba.rocketmq.common.message.Message rmqMsg = createRmqMessage(message, topicName); sendAsync(rmqMsg, completionListener); } }