package com.alipay.dw.jstorm.example.sequence.bolt;
import java.util.Map;
import java.util.concurrent.atomic.AtomicLong;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
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.alipay.dw.jstorm.example.TpsCounter;
import com.alipay.dw.jstorm.example.sequence.bean.Pair;
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() {
// TODO Auto-generated method stub
return null;
}
}