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.aloha.meta.example;
  
  import java.util.Map;
  
  import org.apache.log4j.Logger;
  
  import backtype.storm.task.OutputCollector;
  import backtype.storm.task.TopologyContext;
  import backtype.storm.topology.IRichBolt;
  import backtype.storm.topology.OutputFieldsDeclarer;
  import backtype.storm.tuple.Tuple;
  
  import com.alibaba.aloha.meta.MetaTuple;
  
  
  public class WriterBolt implements IRichBolt {
  
      private static final long serialVersionUID = 2495121976857546346L;
      
      private static final Logger LOG              = Logger.getLogger(WriterBolt.class);
  
      protected OutputCollector      collector;
      
      public void prepare(Map stormConf, TopologyContext context,
              OutputCollector collector) {
          this.collector = collector;
          
      }
      
      public void execute(Tuple tuple) {
          // TODO Auto-generated method stub
          MetaTuple metaTuple = (MetaTuple)tuple.getValue(0);
          
          try {
              LOG.info("Messages:" + metaTuple);
              
          } catch (Exception e) {
              collector.fail(tuple);
              return ;
              //throw new FailedException(e);
          }
          
          collector.ack(tuple);
      }
      
      public void cleanup() {
          // TODO Auto-generated method stub
      }
      
      public void declareOutputFields(OutputFieldsDeclarer declarer) {
          // TODO Auto-generated method stub
          
      }
      
      public Map<String, Object> getComponentConfiguration() {
          // TODO Auto-generated method stub
          return null;
      }
  }
  