content: /**
   * 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 com.jstorm.example.unittests.window;
  
  
  import backtype.storm.Config;
  import backtype.storm.topology.TopologyBuilder;
  import backtype.storm.topology.base.BaseWindowedBolt;
  import com.jstorm.example.unittests.utils.JStormUnitTestMetricValidator;
  import com.jstorm.example.unittests.utils.JStormUnitTestRunner;
  import com.jstorm.example.unittests.utils.JStormUnitTestValidator;
  import org.junit.Test;
  import static org.junit.Assert.*;
  
  import java.util.HashMap;
  import java.util.HashSet;
  import java.util.Map;
  import java.util.Set;
  
  /**
   * @author binyang.dby on 2016/7/21.
   *
   * basically the unit test of SlidingWindowTopology. I change the some of the spout to
   * check if the bolt do the correct processing. I calculate what the average value will
   * be in the spout and count them up. Then I count the actual average in the AvgBolt.
   * If the 2 values are the same, the test is passed.
   *
   * @Test pass at 2016/07/21
   */
  public class SlidingWindowTopologyTest {
      public final static int SPOUT_LIMIT = 3000;
      public final static int SUM_BOLT_WINDOW_LENGTH = 30;
      public final static int SUM_BOLT_WINDOW_SLIDE = 10;
      public final static int AVG_BOLT_WINDOW_LENGTH = 3;
  
      @Test
      public void testSlidingWindowTopology()
      {
          TopologyBuilder topologyBuilder = new TopologyBuilder();
          topologyBuilder.setSpout("spout", new SlidingWindowTestRandomSpout(SPOUT_LIMIT), 1);
          //the following bolt sums all the elements in the window. The window has length of 30 elements
          //and slide every 10 elements.
          //for example, if the spout generate 1, 2, 3, 4 ... then the SumBolt generate 55, 210, 465, 765 ...
          topologyBuilder.setBolt("sum", new SlidingWindowTestSumBolt().withWindow(new BaseWindowedBolt.Count(SUM_BOLT_WINDOW_LENGTH),
                  new BaseWindowedBolt.Count(SUM_BOLT_WINDOW_SLIDE)), 1).shuffleGrouping("spout");
          //the following bolt calculate the average value of elements in the window. The window has length
          //of 3. So it generates the average of 3 elements and then wait for another 3 elements.
          topologyBuilder.setBolt("avg", new SlidingWindowTestAvgBolt().withTumblingWindow(new BaseWindowedBolt.Count(AVG_BOLT_WINDOW_LENGTH)), 1)
                  .shuffleGrouping("sum");
  
          Set<String> userDefineMetrics = new HashSet<String>();
          userDefineMetrics.add("SlidingWindowTopologyTest.SpoutAvgSum");
          userDefineMetrics.add("SlidingWindowTopologyTest.BoltAvgSum");
  
          Map config = new HashMap();
          config.put(Config.TOPOLOGY_NAME, "SlidingWindowTopologyTest");
  
          JStormUnitTestValidator validator = new JStormUnitTestMetricValidator(userDefineMetrics) {
              @Override
              public boolean validateMetrics(Map<String, Double> metrics) {
                  int spoutAvgSum = (int) metrics.get("SlidingWindowTopologyTest.SpoutAvgSum").doubleValue();
                  int boltAvgSum = (int) metrics.get("SlidingWindowTopologyTest.BoltAvgSum").doubleValue();
                  System.out.println(spoutAvgSum + " " + boltAvgSum);
                  assertEquals(spoutAvgSum, boltAvgSum);
  
                  return true;
              }
          };
  
          JStormUnitTestRunner.submitTopology(topologyBuilder.createTopology(), config, 120, validator);
      }
  }
  