rocketmq-sentinel/src/main/java/com/alibaba/csp/sentinel/demo/rocketmq/SyncProducer.java

/*
 * 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 com.alibaba.csp.sentinel.demo.rocketmq;

import org.apache.rocketmq.client.producer.DefaultMQProducer;
import org.apache.rocketmq.client.producer.SendResult;
import org.apache.rocketmq.common.message.Message;
import org.apache.rocketmq.remoting.common.RemotingHelper;

public class SyncProducer {

    public static void main(String[] args) throws Exception {
        // Instantiate with a producer group name.
        DefaultMQProducer producer = new
            DefaultMQProducer(Constants.TEST_GROUP_NAME);
        // Launch the instance.
        producer.start();
        for (int i = 0; i < 1000; i++) {
            // Create a message instance, specifying topic, tag and message body.
            Message msg = new Message(Constants.TEST_TOPIC_NAME, "TagA",
                ("Hello RocketMQ From Sentinel " + i).getBytes(RemotingHelper.DEFAULT_CHARSET)
            );
            // Call send message to deliver message to one of brokers.
            SendResult sendResult = producer.send(msg);
            System.out.printf("%s%n", sendResult);
        }
        // Shut down once the producer instance is not longer in use.
        producer.shutdown();
    }
}