eco-storm-examples/src/java/org/apache/heron/examples/eco/LogInfoBolt.java

/**
 * 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.heron.examples.eco;


import java.util.logging.Logger;

import org.apache.storm.topology.BasicOutputCollector;
import org.apache.storm.topology.OutputFieldsDeclarer;
import org.apache.storm.topology.base.BaseBasicBolt;
import org.apache.storm.tuple.Tuple;

/**
 * Simple bolt that does nothing other than LOG.info() every tuple received.
 *
 */
@SuppressWarnings("serial")
public class LogInfoBolt extends BaseBasicBolt {
  private static final Logger LOG = Logger.getLogger(LogInfoBolt.class.getName());

  @Override
  public void execute(Tuple tuple, BasicOutputCollector basicOutputCollector) {
    LOG.info("{ }" + tuple);
  }

  @Override
  public void declareOutputFields(OutputFieldsDeclarer outputFieldsDeclarer) {

  }
}