/**
 * 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.TopologyContext;
import backtype.storm.topology.BasicOutputCollector;
import backtype.storm.topology.IBasicBolt;
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.bean.Pair;
import java.util.Map;
import java.util.concurrent.atomic.AtomicLong;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class PairCount implements IBasicBolt {
    private static final long serialVersionUID = 7346295981904929419L;
    
    public static final Logger LOG = LoggerFactory.getLogger(PairCount.class);
    
    private AtomicLong sum = new AtomicLong(0);
    private TpsCounter tpsCounter;
    
    public void prepare(Map conf, TopologyContext context) {
        tpsCounter = new TpsCounter(context.getThisComponentId() + ":" + context.getThisTaskId());
        LOG.info("Successfully do parepare " + context.getThisComponentId());
    }
    
    public void execute(Tuple tuple, BasicOutputCollector collector) {
        tpsCounter.count();
        
        Long tupleId = tuple.getLong(0);
        Pair pair = (Pair) tuple.getValue(1);
        
        sum.addAndGet(pair.getValue());
        
        collector.emit(new Values(tupleId, pair));
    }
    
    public void cleanup() {
        tpsCounter.cleanup();
        LOG.info("Total receive value :" + sum);
    }
    
    public void declareOutputFields(OutputFieldsDeclarer declarer) {
        declarer.declare(new Fields("ID", "PAIR"));
    }
    
    public Map<String, Object> getComponentConfiguration() {
        return null;
    }
}