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.trident;
  
  import backtype.storm.Config;
  import backtype.storm.LocalDRPC;
  import backtype.storm.tuple.Fields;
  import com.jstorm.example.unittests.utils.JStormUnitTestDRPCValidator;
  import com.jstorm.example.unittests.utils.JStormUnitTestRunner;
  import org.apache.storm.starter.trident.TridentReach;
  import org.junit.Test;
  import static org.junit.Assert.*;
  import storm.trident.TridentState;
  import storm.trident.TridentTopology;
  import storm.trident.operation.builtin.MapGet;
  import storm.trident.operation.builtin.Sum;
  
  import java.util.Arrays;
  import java.util.HashMap;
  import java.util.List;
  import java.util.Map;
  
  /**
   * @author binyang.dby on 2016/7/22.
   */
  public class TridentReachTest {
      public static Map<String, List<String>> TWEETERS = new HashMap<String, List<String>>() {
          {
              put("foo.com/blog/1", Arrays.asList("sally", "bob", "tim", "george", "nathan"));
              put("engineering.twitter.com/blog/5", Arrays.asList("adam", "david", "sally", "nathan"));
              put("tech.backtype.com/blog/123", Arrays.asList("tim", "mike", "john"));
          }
      };
  
      public static Map<String, List<String>> FOLLOWERS = new HashMap<String, List<String>>() {
          {
              put("sally", Arrays.asList("bob", "tim", "alice", "adam", "jim", "chris", "jai"));
              put("bob", Arrays.asList("sally", "nathan", "jim", "mary", "david", "vivian"));
              put("tim", Arrays.asList("alex"));
              put("nathan", Arrays.asList("sally", "bob", "adam", "harry", "chris", "vivian", "emily", "jordan"));
              put("adam", Arrays.asList("david", "carissa"));
              put("mike", Arrays.asList("john", "bob"));
              put("john", Arrays.asList("alice", "nathan", "jim", "mike", "bob"));
          }
      };
  
      @Test
      public void testTridentReach()
      {
          TridentTopology tridentTopology = new TridentTopology();
          TridentState urlToTweeters = tridentTopology.newStaticState(new TridentReach.StaticSingleKeyMapState.Factory(TWEETERS));
          TridentState tweetersToFollowers = tridentTopology.newStaticState(new TridentReach.StaticSingleKeyMapState.Factory(FOLLOWERS));
  
          LocalDRPC localDRPC = new LocalDRPC();
  
          tridentTopology.newDRPCStream("reach", localDRPC)
                  .stateQuery(urlToTweeters, new Fields("args"), new MapGet(), new Fields("tweeters"))
                  .each(new Fields("tweeters"), new TridentReach.ExpandList(), new Fields("tweeter")).shuffle()
                  .stateQuery(tweetersToFollowers, new Fields("tweeter"), new MapGet(), new Fields("followers"))
                  .each(new Fields("followers"), new TridentReach.ExpandList(), new Fields("follower")).groupBy(new Fields("follower"))
                  .aggregate(new TridentReach.One(), new Fields("one")).aggregate(new Fields("one"), new Sum(), new Fields("reach"));
  
          Map config = new HashMap();
          config.put(Config.TOPOLOGY_NAME, "TridentReachTest");
  
          JStormUnitTestDRPCValidator validator = new JStormUnitTestDRPCValidator(localDRPC) {
              @Override
              public boolean validate(Map config) {
                  String query = executeLocalDRPC("reach", "aaa");
                  assertEquals("[[0]]", query);
  
                  query = executeLocalDRPC("reach", "foo.com/blog/1");
                  assertEquals("[[16]]", query);
  
                  query = executeLocalDRPC("reach", "engineering.twitter.com/blog/5");
                  assertEquals("[[14]]", query);
                  return true;
              }
          };
  
          try {
              JStormUnitTestRunner.submitTopology(tridentTopology.build(), config, 120, validator);
          }
          finally {
              localDRPC.shutdown();
          }
      }
  }
  