TestSpout.java

package eu.europeana.cloud.bolts;


import org.apache.storm.spout.SpoutOutputCollector;
import org.apache.storm.task.TopologyContext;
import org.apache.storm.testing.CompletableSpout;
import org.apache.storm.topology.OutputFieldsDeclarer;
import org.apache.storm.topology.base.BaseRichSpout;
import org.apache.storm.tuple.Fields;
import org.apache.storm.tuple.Values;
import org.apache.storm.utils.Utils;

import java.util.Map;

public class TestSpout extends BaseRichSpout {

    private SpoutOutputCollector collector;


    @Override
    public void declareOutputFields(OutputFieldsDeclarer outputFieldsDeclarer) {
        outputFieldsDeclarer.declare(new Fields("str"));
    }


    @Override
    public void open(Map map, TopologyContext topologyContext, SpoutOutputCollector spoutOutputCollector) {
        collector = spoutOutputCollector;
    }


    @Override
    public void nextTuple() {
        Utils.sleep(100);
        collector.emit(new Values("test1"));

    }

    @Override
    public void close() {
        super.close();
    }

}