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* distributed with this work for additional information
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* 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
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package com.jstorm.example.unittests.tick;
import backtype.storm.Config;
import backtype.storm.topology.TopologyBuilder;
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 org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;
import static org.junit.Assert.*;
/**
* @author binyang.dby on 2016/7/21.
*
* This test is to check if the tick works correctly with the cycle which
* is set by the user.
*/
public class TickTupleTest{
//note that it is a cycle but not a frequency, it means you will receive a tick tuple every 2 seconds
public final static int TICK_TUPLE_CYCLE = 2;
public final static int TICK_TUPLE_BOLT_PARALLELISM = 5;
private static Logger LOG = LoggerFactory.getLogger(TickTupleTest.class);
@Test
public void testTickTuple()
{
TopologyBuilder topologyBuilder = new TopologyBuilder();
//the spout is useless in this case, all the methods are empty
topologyBuilder.setSpout("spout", new TickTupleTestSpout());
//note that there is no grouping here, the bolt should not receive any tuple from spout
//I increase the parallelism of the bolt to check if it is correct when we have a
//parallelism greater than 1.
topologyBuilder.setBolt("bolt", new TickTupleTestBolt(), TICK_TUPLE_BOLT_PARALLELISM)
.addConfiguration(Config.TOPOLOGY_TICK_TUPLE_FREQ_SECS, TICK_TUPLE_CYCLE);
Set<String> userDefineMetrics = new HashSet<String>();
userDefineMetrics.add("TickTupleTest.TickMeter");
userDefineMetrics.add("TickTupleTest.NonTickCounter");
JStormUnitTestValidator validator = new JStormUnitTestMetricValidator(userDefineMetrics) {
@Override
public boolean validateMetrics(Map<String, Double> metrics) {
//there is $TICK_TUPLE_BOLT_PARALLELISM bolts, so the TickMeter need divided by $TICK_TUPLE_BOLT_PARALLELISM
double cycle = 1 / (metrics.get("TickTupleTest.TickMeter") / TICK_TUPLE_BOLT_PARALLELISM);
LOG.info("TickTupleTest.TickMeter = " + metrics.get("TickTupleTest.TickMeter"));
LOG.info("Tick cycle = " + cycle);
assertTrue("The tick cycle should be in range of 0.8*TICK_TUPLE_CYCLE and 1.2*TICK_TUPLE_CYCLE",
cycle > 0.9f*TICK_TUPLE_CYCLE && cycle < 1.1f*TICK_TUPLE_CYCLE);
assertEquals(0, (int)(metrics.get("TickTupleTest.NonTickCounter").doubleValue()));
return true;
}
};
Config config = new Config();
config.put(Config.TOPOLOGY_NAME, "TickTupleTest");
JStormUnitTestRunner.submitTopology(topologyBuilder.createTopology(), config, 120, validator);
}
}