RichShellSpout.java

package backtype.storm.clojure;

import backtype.storm.generated.StreamInfo;
import backtype.storm.spout.ShellSpout;
import backtype.storm.topology.IRichSpout;
import backtype.storm.topology.OutputFieldsDeclarer;
import backtype.storm.tuple.Fields;
import java.util.Map;

public class RichShellSpout extends ShellSpout implements IRichSpout {
	private Map<String, StreamInfo> _outputs;

	public RichShellSpout(String[] command, Map<String, StreamInfo> outputs) {
		super(command);
		_outputs = outputs;
	}

	@Override
	public void declareOutputFields(OutputFieldsDeclarer declarer) {
		for (String stream : _outputs.keySet()) {
			StreamInfo def = _outputs.get(stream);
			if (def.is_direct()) {
				declarer.declareStream(stream, true,
						new Fields(def.get_output_fields()));
			} else {
				declarer.declareStream(stream,
						new Fields(def.get_output_fields()));
			}
		}
	}

	@Override
	public Map<String, Object> getComponentConfiguration() {
		return null;
	}
}