001/**
002 * Copyright (c) 2011, 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 org.openimaj.rdf.storm.tool.topology;
031
032import org.kohsuke.args4j.Option;
033import org.openimaj.storm.tool.StormToolOptions;
034import org.slf4j.Logger;
035import org.slf4j.LoggerFactory;
036
037import backtype.storm.Config;
038import backtype.storm.LocalCluster;
039import backtype.storm.generated.StormTopology;
040import backtype.storm.utils.Utils;
041
042/**
043 * The local topology for testing. Allows the specification of sleep time etc.
044 * 
045 * @author Sina Samangooei (ss@ecs.soton.ac.uk)
046 * 
047 */
048public class LocalTopologyMode implements TopologyMode {
049        private static final int DEFAULT_SLEEP_TIME = 10000;
050        private final static Logger logger = LoggerFactory.getLogger(LocalTopologyMode.class);
051        /**
052         * Time to wait in local mode
053         */
054        @Option(
055                        name = "--sleep-time",
056                        aliases = "-st",
057                        required = false,
058                        usage = "How long the local topology should wait while processing happens, -1 waits forever",
059                        metaVar = "STRING")
060        public long sleepTime = DEFAULT_SLEEP_TIME;
061        private LocalCluster cluster;
062
063        @Override
064        public void submitTopology(StormToolOptions options) throws Exception {
065                logger.debug("Configuring topology");
066                Config conf = options.prepareConfig();
067                logger.debug("Instantiating cluster");
068                this.cluster = new LocalCluster();
069                logger.debug("Constructing topology");
070                StormTopology topology = options.constructTopology();
071                logger.debug("Submitting topology");
072                cluster.submitTopology(options.topologyName(), conf, topology);
073        }
074
075        @Override
076        public void finish(StormToolOptions options) throws Exception {
077                try {
078                        if (sleepTime < 0) {
079                                logger.debug("Waiting forever");
080                                while (true) {
081                                        Utils.sleep(DEFAULT_SLEEP_TIME);
082                                }
083                        } else {
084                                logger.debug("Waiting " + sleepTime + " milliseconds");
085                                Utils.sleep(sleepTime);
086
087                        }
088                } finally {
089                        logger.debug("Killing topology");
090                        cluster.killTopology(options.topologyName());
091                        logger.debug("Shutting down cluster");
092                        cluster.shutdown();
093                        options.topologyCleanup();
094                }
095        }
096
097}