/*
* Copyright (C) 2015 SoftIndex LLC.
*
* Licensed 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 io.datakernel.stream.benchmarks;
import com.google.common.base.Functions;
import io.datakernel.eventloop.Eventloop;
import io.datakernel.stream.StreamProducer;
import io.datakernel.stream.StreamProducers;
import io.datakernel.stream.TestStreamConsumers;
import io.datakernel.stream.processor.Sharder;
import io.datakernel.stream.processor.StreamSharder;
import java.util.ArrayList;
import static io.datakernel.eventloop.FatalErrorHandlers.rethrowOnAnyError;
public class StreamSharderBenchmark implements Runnable {
private long bestTime;
private long worstTime;
private int benchmarkRounds;
private long avgTime;
public long getBestTime() {
return bestTime;
}
public long getWorstTime() {
return worstTime;
}
public long getAvgTime() {
return avgTime;
}
public StreamSharderBenchmark(int benchmarkRounds) {
this.benchmarkRounds = benchmarkRounds;
}
@SuppressWarnings("unchecked")
private void setUp(Eventloop eventloop) {
final Sharder<Integer> SHARDER = new Sharder<Integer>() {
@Override
public int shard(Integer object) {
return object % 5;
}
};
StreamSharder<Integer, Integer> streamSharder = StreamSharder.create(eventloop, SHARDER, Functions.<Integer>identity());
ArrayList testList = new ArrayList();
for (int i = 0; i < 10000000; i++) {
testList.add(i);
}
StreamProducer<Integer> source = StreamProducers.ofIterable(eventloop, testList);
TestStreamConsumers.TestConsumerToList<Integer> consumer1 = TestStreamConsumers.toListRandomlySuspending(eventloop);
TestStreamConsumers.TestConsumerToList<Integer> consumer2 = TestStreamConsumers.toListRandomlySuspending(eventloop);
TestStreamConsumers.TestConsumerToList<Integer> consumer3 = TestStreamConsumers.toListRandomlySuspending(eventloop);
TestStreamConsumers.TestConsumerToList<Integer> consumer4 = TestStreamConsumers.toListRandomlySuspending(eventloop);
TestStreamConsumers.TestConsumerToList<Integer> consumer5 = TestStreamConsumers.toListRandomlySuspending(eventloop);
source.streamTo(streamSharder.getInput());
streamSharder.newOutput().streamTo(consumer1);
streamSharder.newOutput().streamTo(consumer2);
streamSharder.newOutput().streamTo(consumer3);
streamSharder.newOutput().streamTo(consumer4);
streamSharder.newOutput().streamTo(consumer5);
}
@Override
public void run() {
System.out.println("Benchmark running...");
long time = 0;
this.bestTime = -1;
this.worstTime = -1;
Eventloop eventloop = Eventloop.create().withFatalErrorHandler(rethrowOnAnyError());
for (int i = 0; i < this.benchmarkRounds; i++) {
setUp(eventloop);
long roundTime = System.currentTimeMillis();
eventloop.run();
roundTime = System.currentTimeMillis() - roundTime;
time += roundTime;
if (this.bestTime == -1 || roundTime < this.bestTime) {
this.bestTime = roundTime;
}
if (this.worstTime == -1 || roundTime > this.worstTime) {
this.worstTime = roundTime;
}
System.out.println("round:" + i + ", time:" + roundTime);
}
avgTime = time / benchmarkRounds;
System.out.println("best time: " + getBestTime());
System.out.println("worst time: " + getWorstTime());
System.out.println("Avg time: " + getAvgTime());
}
public static void main(String[] args) {
StreamSharderBenchmark benchmark = new StreamSharderBenchmark(10);
benchmark.run();
}
}