content: /**
   * 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.jstorm.utils;
  
  import backtype.storm.utils.DisruptorQueue;
  import com.alibaba.jstorm.callback.AsyncLoopRunnable;
  import com.alibaba.jstorm.callback.RunnableCallback;
  import com.lmax.disruptor.EventHandler;
  import java.util.concurrent.atomic.AtomicBoolean;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  /**
   * Disruptor Consumer thread
   *
   * @author yannian
   */
  public abstract class DisruptorRunable extends RunnableCallback implements EventHandler {
      private final static Logger LOG = LoggerFactory.getLogger(DisruptorRunable.class);
  
      protected DisruptorQueue queue;
      protected String idStr;
      protected AtomicBoolean shutdown = AsyncLoopRunnable.getShutdown();
  
      public DisruptorRunable(DisruptorQueue queue, String idStr) {
          this.queue = queue;
          this.idStr = idStr;
      }
  
      public abstract void handleEvent(Object event, boolean endOfBatch) throws Exception;
  
      /**
       * This function need to be implements
       *
       * @see com.lmax.disruptor.EventHandler#onEvent(java.lang.Object, long, boolean)
       */
      @Override
      public void onEvent(Object event, long sequence, boolean endOfBatch) throws Exception {
          if (event == null) {
              return;
          }
          handleEvent(event, endOfBatch);
      }
  
      @Override
      public void run() {
          LOG.info("Successfully start thread " + idStr);
          //queue.consumerStarted();
  
          while (!shutdown.get()) {
              queue.consumeBatchWhenAvailable(this);
          }
          LOG.info("Successfully exit thread " + idStr);
      }
  
      @Override
      public void shutdown() {
      }
  
  }
  