content: /*
   * Copyright 1999-2018 Alibaba Group Holding Ltd.
   *
   * 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.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);
          producer.setNamesrvAddr(Constants.TEST_NAMESRV_ADDR);
          // 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)
              );
  
              try {
                  // Call send message to deliver message to one of brokers.
                  SendResult sendResult = producer.send(msg);
                  System.out.printf("%s%n", sendResult);
              } catch (Exception e) {
                  e.printStackTrace();
              }
          }
          // Shut down once the producer instance is not longer in use.
          producer.shutdown();
      }
  }