src/jvm/backtype/storm/testing/TestWordSpout.java

package backtype.storm.testing;

import backtype.storm.topology.OutputFieldsDeclarer;
import java.util.Map;
import backtype.storm.spout.SpoutOutputCollector;
import backtype.storm.task.TopologyContext;
import backtype.storm.topology.IRichSpout;
import backtype.storm.tuple.Fields;
import backtype.storm.tuple.Values;
import backtype.storm.utils.Utils;
import java.util.Random;
import org.apache.log4j.Logger;


public class TestWordSpout implements IRichSpout {
    public static Logger LOG = Logger.getLogger(TestWordSpout.class);
    boolean _isDistributed;
    SpoutOutputCollector _collector;

    public TestWordSpout() {
        this(true);
    }

    public TestWordSpout(boolean isDistributed) {
        _isDistributed = isDistributed;
    }
    
    public boolean isDistributed() {
        return _isDistributed;
    }
    
    public void open(Map conf, TopologyContext context, SpoutOutputCollector collector) {
        _collector = collector;
    }
    
    public void close() {
        
    }
        
    public void nextTuple() {
        Utils.sleep(100);
        final String[] words = new String[] {"nathan", "mike", "jackson", "golda", "bertels"};
        final Random rand = new Random();
        final String word = words[rand.nextInt(words.length)];
        _collector.emit(new Values(word));
    }
    
    public void ack(Object msgId) {

    }

    public void fail(Object msgId) {
        
    }
    
    public void declareOutputFields(OutputFieldsDeclarer declarer) {
        declarer.declare(new Fields("word"));
    }
}