001/**
002 * Copyright (c) 2012, The University of Southampton and the individual contributors.
003 * All rights reserved.
004 *
005 * Redistribution and use in source and binary forms, with or without modification,
006 * are permitted provided that the following conditions are met:
007 *
008 *   *  Redistributions of source code must retain the above copyright notice,
009 *      this list of conditions and the following disclaimer.
010 *
011 *   *  Redistributions in binary form must reproduce the above copyright notice,
012 *      this list of conditions and the following disclaimer in the documentation
013 *      and/or other materials provided with the distribution.
014 *
015 *   *  Neither the name of the University of Southampton nor the names of its
016 *      contributors may be used to endorse or promote products derived from this
017 *      software without specific prior written permission.
018 *
019 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
020 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
021 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
022 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
023 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
024 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
025 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
026 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
027 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
028 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
029 */
030package backtype.storm.spout;
031
032import java.util.Map;
033
034import backtype.storm.Config;
035import backtype.storm.LocalCluster;
036import backtype.storm.scheme.StringScheme;
037import backtype.storm.task.OutputCollector;
038import backtype.storm.task.TopologyContext;
039import backtype.storm.topology.OutputFieldsDeclarer;
040import backtype.storm.topology.TopologyBuilder;
041import backtype.storm.topology.base.BaseRichBolt;
042import backtype.storm.tuple.Tuple;
043
044@SuppressWarnings({ "rawtypes", "serial" })
045public class TestTopology {
046        public static class FailEveryOther extends BaseRichBolt {
047
048                OutputCollector _collector;
049                int i = 0;
050
051                @Override
052                public void prepare(Map map, TopologyContext tc, OutputCollector collector) {
053                        _collector = collector;
054                }
055
056                @Override
057                public void execute(Tuple tuple) {
058                        i++;
059                        if (i % 2 == 0) {
060                                _collector.fail(tuple);
061                        } else {
062                                _collector.ack(tuple);
063                        }
064                }
065
066                @Override
067                public void declareOutputFields(OutputFieldsDeclarer declarer) {
068                }
069        }
070
071        public static void main(String[] args) throws Exception {
072                final TopologyBuilder builder = new TopologyBuilder();
073                final KestrelThriftSpout spout = new KestrelThriftSpout("localhost", 2229, "test", new StringScheme());
074                builder.setSpout("spout", spout).setDebug(true);
075                builder.setBolt("bolt", new FailEveryOther())
076                                .shuffleGrouping("spout");
077
078                final LocalCluster cluster = new LocalCluster();
079                final Config conf = new Config();
080                cluster.submitTopology("test", conf, builder.createTopology());
081
082                Thread.sleep(600000);
083        }
084}