/**
 * 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");
		}
	}
}