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.alipay.dw.jstorm.example.sequence.bolt;
  
  import backtype.storm.task.OutputCollector;
  import backtype.storm.task.TopologyContext;
  import backtype.storm.topology.IRichBolt;
  import backtype.storm.topology.OutputFieldsDeclarer;
  import backtype.storm.tuple.Fields;
  import backtype.storm.tuple.Tuple;
  import backtype.storm.tuple.Values;
  
  import com.alibaba.starter.utils.TpsCounter;
  import com.alipay.dw.jstorm.example.sequence.SequenceTopologyDef;
  import com.alipay.dw.jstorm.example.sequence.bean.Pair;
  import com.alipay.dw.jstorm.example.sequence.bean.TradeCustomer;
  import java.util.HashMap;
  import java.util.Map;
  import java.util.concurrent.atomic.AtomicLong;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  public class MergeRecord implements IRichBolt {
      private static final long serialVersionUID = -5984311734042330577L;
      
      public static Logger LOG = LoggerFactory.getLogger(MergeRecord.class);
      
      private Map<Long, Tuple> tradeMap    = new HashMap<Long, Tuple>();
      private Map<Long, Tuple> customerMap = new HashMap<Long, Tuple>();
      
      private TpsCounter      tpsCounter;
      private OutputCollector collector;
      
      @Override
      public void prepare(Map stormConf, TopologyContext context, OutputCollector collector) {
          this.collector = collector;
          
          tpsCounter = new TpsCounter(context.getThisComponentId() + ":" + context.getThisTaskId());
          
          LOG.info("Finished preparation");
      }
      
      private AtomicLong tradeSum    = new AtomicLong(0);
      private AtomicLong customerSum = new AtomicLong(0);
      
      @Override
      public void execute(Tuple input) {
          
          tpsCounter.count();
          
          Long tupleId = input.getLong(0);
          Pair pair = (Pair) input.getValue(1);
          
          Pair trade = null;
          Pair customer = null;
          
          Tuple tradeTuple = null;
          Tuple customerTuple = null;
          
          if (input.getSourceComponent().equals(SequenceTopologyDef.CUSTOMER_BOLT_NAME)) {
              customer = pair;
              customerTuple = input;
              
              tradeTuple = tradeMap.remove(tupleId);
              if (tradeTuple == null) {
                  customerMap.put(tupleId, input);
                  return;
              }
              
              trade = (Pair) tradeTuple.getValue(1);
              
          } else if (input.getSourceComponent().equals(SequenceTopologyDef.TRADE_BOLT_NAME)) {
              trade = pair;
              tradeTuple = input;
              
              customerTuple = customerMap.remove(tupleId);
              if (customerTuple == null) {
                  tradeMap.put(tupleId, input);
                  return;
              }
              
              customer = (Pair) customerTuple.getValue(1);
          } else {
              LOG.info("Unknow source component: " + input.getSourceComponent());
              collector.fail(input);
              return;
          }
          
          tradeSum.addAndGet(trade.getValue());
          customerSum.addAndGet(customer.getValue());
          
          collector.ack(tradeTuple);
          collector.ack(customerTuple);
          
          TradeCustomer tradeCustomer = new TradeCustomer();
          tradeCustomer.setTrade(trade);
          tradeCustomer.setCustomer(customer);
          collector.emit(new Values(tupleId, tradeCustomer));
      }
      
      public void cleanup() {
          tpsCounter.cleanup();
          LOG.info("tradeSum:" + tradeSum + ",cumsterSum" + customerSum);
          LOG.info("Finish cleanup");
      }
      
      public void declareOutputFields(OutputFieldsDeclarer declarer) {
          declarer.declare(new Fields("ID", "RECORD"));
      }
      
      public Map<String, Object> getComponentConfiguration() {
          return null;
      }
  }
  