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.alibaba.jstorm.topology;
  
  import junit.framework.Assert;
  
  import static org.junit.Assert.assertNotSame;
  
  import java.util.concurrent.atomic.AtomicInteger;
  
  import org.junit.Test;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  import backtype.storm.Config;
  import backtype.storm.LocalCluster;
  import backtype.storm.testing.FeederSpout;
  import backtype.storm.topology.TopologyBuilder;
  import backtype.storm.tuple.Fields;
  import backtype.storm.tuple.Values;
  
  import com.alibaba.jstorm.utils.JStormUtils;
  
  public class SingleJoinTest {
  	private static Logger LOG = LoggerFactory.getLogger(SingleJoinTest.class);
  
  	public static AtomicInteger receiveCounter = new AtomicInteger(0);
  
  	@Test
  	public void test_single_join() {
  		receiveCounter.set(0);
  		try {
  			FeederSpout genderSpout = new FeederSpout(new Fields("id", "gender"));
  			FeederSpout ageSpout = new FeederSpout(new Fields("id", "age"));
  
  			TopologyBuilder builder = new TopologyBuilder();
  			builder.setSpout("gender", genderSpout);
  			builder.setSpout("age", ageSpout);
  			builder.setBolt("join", new SingleJoinBolt(new Fields("gender", "age")))
  					.fieldsGrouping("gender", new Fields("id")).fieldsGrouping("age", new Fields("id"));
  
  			Config conf = new Config();
  			conf.setDebug(true);
  
  			LocalCluster cluster = new LocalCluster();
  			cluster.submitTopology("join-example", conf, builder.createTopology());
  
  			for (int i = 0; i < 10; i++) {
  				String gender;
  				if (i % 2 == 0) {
  					gender = "male";
  				} else {
  					gender = "female";
  				}
  				genderSpout.feed(new Values(i, gender));
  			}
  
  			for (int i = 9; i >= 0; i--) {
  				ageSpout.feed(new Values(i, i + 20));
  			}
  
  			JStormUtils.sleepMs(60 * 1000);
  
  			assertNotSame(0, receiveCounter.get());
  
  			cluster.shutdown();
  		} catch (Exception e) {
  			Assert.fail("Failed to run SingleJoinExample");
  		}
  	}
  }
  