/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.flink.storm.tests.operators;
import java.util.Map;
import org.apache.storm.spout.SpoutOutputCollector;
import org.apache.storm.task.TopologyContext;
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;
public class MetaDataSpout extends BaseRichSpout {
private static final long serialVersionUID = 5305870218033256376L;
public static final String STREAM_ID = "spoutMeta";
private SpoutOutputCollector collector;
private TopologyContext context;
@SuppressWarnings("rawtypes")
@Override
public void open(Map conf, TopologyContext context, SpoutOutputCollector collector) {
this.collector = collector;
this.context = context;
}
@Override
public void nextTuple() {
this.collector.emit(STREAM_ID, new Values(this.context.getThisComponentId(), STREAM_ID,
this.context.getThisTaskId()));
}
@Override
public void declareOutputFields(OutputFieldsDeclarer declarer) {
declarer.declareStream(STREAM_ID, new Fields("id", "sid", "tid"));
}
}