| 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.utils.Utils; |
| import java.util.List; |
| import java.util.HashMap; |
| import java.util.UUID; |
| import java.util.concurrent.LinkedBlockingQueue; |
| |
| |
| public class FeederSpout implements IRichSpout { |
| |
| public transient static Map<String, LinkedBlockingQueue<List<Object>>> _feeds = new HashMap<String, LinkedBlockingQueue<List<Object>>>(); |
| |
| private String _id; |
| private Fields _outFields; |
| private SpoutOutputCollector _collector; |
| private AckFailDelegate _ackFailDelegate; |
| |
| public FeederSpout(Fields outFields) { |
| _id = UUID.randomUUID().toString(); |
| _feeds.put(_id, new LinkedBlockingQueue<List<Object>>()); |
| _outFields = outFields; |
| } |
| |
| public void setAckFailDelegate(AckFailDelegate d) { |
| _ackFailDelegate = d; |
| } |
| |
| public void feed(List<Object> tuple) { |
| _feeds.get(_id).add(tuple); |
| } |
| |
| public boolean isDistributed() { |
| return true; |
| } |
| |
| public void open(Map conf, TopologyContext context, SpoutOutputCollector collector) { |
| _collector = collector; |
| } |
| |
| public void close() { |
| |
| } |
| |
| public void nextTuple() { |
| List<Object> tuple = _feeds.get(_id).poll(); |
| if(tuple!=null) { |
| _collector.emit(tuple, UUID.randomUUID().toString()); |
| } else { |
| Utils.sleep(100); |
| } |
| } |
| |
| public void ack(Object msgId){ |
| if(_ackFailDelegate!=null) { |
| _ackFailDelegate.ack(msgId); |
| } |
| } |
| |
| public void fail(Object msgId){ |
| if(_ackFailDelegate!=null) { |
| _ackFailDelegate.fail(msgId); |
| } |
| } |
| |
| public void declareOutputFields(OutputFieldsDeclarer declarer) { |
| declarer.declare(_outFields); |
| } |
| } |