text: /*
   * 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.hongxi.whatsmars.rocketmq.simple;
  
  import org.apache.rocketmq.client.consumer.*;
  import org.apache.rocketmq.client.exception.MQClientException;
  import org.apache.rocketmq.common.message.MessageQueue;
  import org.apache.rocketmq.common.protocol.heartbeat.MessageModel;
  
  public class PullScheduleService {
  
      public static void main(String[] args) throws MQClientException {
          final MQPullConsumerScheduleService scheduleService = new MQPullConsumerScheduleService("pull_schedule_group");
  
          scheduleService.setMessageModel(MessageModel.CLUSTERING);
          scheduleService.registerPullTaskCallback("TopicTest", new PullTaskCallback() {
  
              @Override
              public void doPullTask(MessageQueue mq, PullTaskContext context) {
                  MQPullConsumer consumer = context.getPullConsumer();
                  try {
  
                      long offset = consumer.fetchConsumeOffset(mq, false);
                      if (offset < 0)
                          offset = 0;
  
                      PullResult pullResult = consumer.pull(mq, "*", offset, 32);
                      System.out.printf("%s%n", offset + "\t" + mq + "\t" + pullResult);
                      switch (pullResult.getPullStatus()) {
                          case FOUND:
                              break;
                          case NO_MATCHED_MSG:
                              break;
                          case NO_NEW_MSG:
                          case OFFSET_ILLEGAL:
                              break;
                          default:
                              break;
                      }
                      consumer.updateConsumeOffset(mq, pullResult.getNextBeginOffset());
  
                      context.setPullNextDelayTimeMillis(100);
                  } catch (Exception e) {
                      e.printStackTrace();
                  }
              }
          });
  
          scheduleService.start();
      }
  }
  