SOLBolt.java

/*
 * Copyright (c) 2013 Yahoo! Inc. All Rights Reserved.
 *
 * Licensed 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. See accompanying LICENSE file.
 */

package com.yahoo.storm.perftest;

import java.util.Map;

import backtype.storm.task.OutputCollector;
import backtype.storm.task.TopologyContext;
import backtype.storm.topology.OutputFieldsDeclarer;
import backtype.storm.topology.base.BaseRichBolt;
import backtype.storm.tuple.Tuple;
import backtype.storm.tuple.Fields;
import backtype.storm.tuple.Values;

public class SOLBolt extends BaseRichBolt {
  private OutputCollector _collector;

  public SOLBolt() {
    //Empty
  }

  @Override
  public void prepare(Map conf, TopologyContext context, OutputCollector collector) {
    _collector = collector;
  }

  @Override
  public void execute(Tuple tuple) {
    _collector.emit(tuple, new Values(tuple.getString(0)));
    _collector.ack(tuple);
  }

  @Override
  public void cleanup() {
  }

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