examples/storm-starter/src/jvm/org/apache/storm/starter/SlidingTupleTsTopology.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.storm.starter;

import java.util.concurrent.TimeUnit;
import org.apache.storm.Config;
import org.apache.storm.StormSubmitter;
import org.apache.storm.starter.bolt.PrinterBolt;
import org.apache.storm.starter.bolt.SlidingWindowSumBolt;
import org.apache.storm.starter.spout.RandomIntegerSpout;
import org.apache.storm.topology.TopologyBuilder;
import org.apache.storm.topology.base.BaseWindowedBolt;
import org.apache.storm.topology.base.BaseWindowedBolt.Duration;

/**
 * Windowing based on tuple timestamp (e.g. the time when tuple is generated
 * rather than when its processed).
 */
public class SlidingTupleTsTopology {
    public static void main(String[] args) throws Exception {
        TopologyBuilder builder = new TopologyBuilder();
        BaseWindowedBolt bolt = new SlidingWindowSumBolt()
            .withWindow(new Duration(5, TimeUnit.SECONDS), new Duration(3, TimeUnit.SECONDS))
            .withTimestampField("ts")
            .withLag(new Duration(5, TimeUnit.SECONDS));
        builder.setSpout("integer", new RandomIntegerSpout(), 1);
        builder.setBolt("slidingsum", bolt, 1).shuffleGrouping("integer");
        builder.setBolt("printer", new PrinterBolt(), 1).shuffleGrouping("slidingsum");
        Config conf = new Config();
        conf.setDebug(true);
        String topoName = "test";

        if (args != null && args.length > 0) {
            topoName = args[0];
        }

        conf.setNumWorkers(1);
        StormSubmitter.submitTopologyWithProgressBar(topoName, conf, builder.createTopology());
    }
}