/**
* Copyright (C) 2010-2013 Alibaba Group Holding Limited
*
* 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
*
* 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 com.alibaba.rocketmq.example.ordermessage;
import java.util.List;
import com.alibaba.rocketmq.client.exception.MQBrokerException;
import com.alibaba.rocketmq.client.exception.MQClientException;
import com.alibaba.rocketmq.client.producer.DefaultMQProducer;
import com.alibaba.rocketmq.client.producer.MQProducer;
import com.alibaba.rocketmq.client.producer.MessageQueueSelector;
import com.alibaba.rocketmq.client.producer.SendResult;
import com.alibaba.rocketmq.common.message.Message;
import com.alibaba.rocketmq.common.message.MessageQueue;
import com.alibaba.rocketmq.remoting.exception.RemotingException;
/**
* Producer，发送顺序消息
*/
public class Producer {
public static void main(String[] args) {
try {
MQProducer producer = new DefaultMQProducer("please_rename_unique_group_name");
producer.start();
String[] tags = new String[] { "TagA", "TagB", "TagC", "TagD", "TagE" };
for (int i = 0; i < 100; i++) {
// 订单ID相同的消息要有序
int orderId = i % 10;
Message msg =
new Message("TopicTest", tags[i % tags.length], "KEY" + i,
("Hello RocketMQ " + i).getBytes());
SendResult sendResult = producer.send(msg, new MessageQueueSelector() {
@Override
public MessageQueue select(List<MessageQueue> mqs, Message msg, Object arg) {
Integer id = (Integer) arg;
int index = id % mqs.size();
return mqs.get(index);
}
}, orderId);
System.out.println(sendResult);
}
producer.shutdown();
}
catch (MQClientException e) {
e.printStackTrace();
}
catch (RemotingException e) {
e.printStackTrace();
}
catch (MQBrokerException e) {
e.printStackTrace();
}
catch (InterruptedException e) {
e.printStackTrace();
}
}
}