package com.jstorm.example.unittests.order;
import backtype.storm.spout.SpoutOutputCollector;
import backtype.storm.task.TopologyContext;
import backtype.storm.topology.OutputFieldsDeclarer;
import backtype.storm.topology.base.BaseRichSpout;
import backtype.storm.tuple.Fields;
import backtype.storm.tuple.Values;
import com.alibaba.jstorm.common.metric.AsmCounter;
import com.alibaba.jstorm.common.metric.AsmMetric;
import com.alibaba.jstorm.metric.MetricClient;
import com.alibaba.jstorm.utils.JStormUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.util.Map;
/**
* @author binyang.dby
*/
public class InOrderTestSpout extends BaseRichSpout
{
private Logger LOG = LoggerFactory.getLogger(InOrderTestSpout.class);
private long limit;
private transient SpoutOutputCollector collector;
private int task;
private int content;
private transient MetricClient metricClient;
private transient AsmCounter emitCounter;
public InOrderTestSpout(long limit) {
this.limit = limit;
}
@Override
public void declareOutputFields(OutputFieldsDeclarer declarer) {
declarer.declare(new Fields("c1", "c2"));
}
@Override
public void open(Map conf, TopologyContext context, SpoutOutputCollector collector) {
this.collector = collector;
this.task = context.getThisTaskIndex();
this.metricClient = new MetricClient(context);
this.emitCounter = metricClient.registerCounter(InOrderTestMetricsDef.METRIC_SPOUT_EMIT);
this.emitCounter.setOp(AsmMetric.MetricOp.LOG & AsmMetric.MetricOp.REPORT);
LOG.info("open. task = " + task);
}
@Override
public void nextTuple() {
if(content >= limit) {
JStormUtils.sleepMs(1000);
return;
}
Values values = new Values(task, content);
collector.emit(values, "msg");
content++;
emitCounter.inc();
LOG.info("nextTuple. task = " + task + " content = " + content);
}
}