/**
* 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 org.apache.camel.processor;
import java.io.File;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.LinkedList;
import java.util.List;
import java.util.Random;
import java.util.concurrent.Future;
import org.apache.camel.ContextTestSupport;
import org.apache.camel.Exchange;
import org.apache.camel.builder.RouteBuilder;
import org.apache.camel.processor.aggregate.AggregationStrategy;
import org.apache.camel.util.StopWatch;
public class SplitterParallelAggregateTest extends ContextTestSupport {
// run this test manually as it takes some time to process, but shows that parallel aggregate can
// be faster when enabled.
private boolean enabled;
@Override
protected RouteBuilder createRouteBuilder() throws Exception {
return new RouteBuilder() {
@Override
public void configure() throws Exception {
from("direct:splitSynchronizedAggregation")
.split(method(new MySplitter(), "rowIterator"), new MyAggregationStrategy())
.to("log:someSplitProcessing?groupSize=500");
from("direct:splitUnsynchronizedAggregation")
.split(method(new MySplitter(), "rowIterator"), new MyAggregationStrategy()).parallelAggregate()
.to("log:someSplitProcessing?groupSize=500");
}
};
}
public void test1() throws Exception {
if (!enabled) {
return;
}
int numberOfRequests = 1;
timeSplitRoutes(numberOfRequests);
}
public void test2() throws Exception {
if (!enabled) {
return;
}
int numberOfRequests = 2;
timeSplitRoutes(numberOfRequests);
}
public void test4() throws Exception {
if (!enabled) {
return;
}
int numberOfRequests = 4;
timeSplitRoutes(numberOfRequests);
}
protected void timeSplitRoutes(int numberOfRequests) throws Exception {
String[] endpoints = new String[]{"direct:splitSynchronizedAggregation", "direct:splitUnsynchronizedAggregation"};
List<Future<File>> futures = new ArrayList<Future<File>>();
StopWatch stopWatch = new StopWatch(false);
for (String endpoint : endpoints) {
stopWatch.restart();
for (int requestIndex = 0; requestIndex < numberOfRequests; requestIndex++) {
futures.add(template.asyncRequestBody(endpoint, null, File.class));
}
for (int i = 0; i < futures.size(); i++) {
Future<File> future = futures.get(i);
future.get();
}
stopWatch.stop();
log.info(String.format("test%d.%s=%d\n", numberOfRequests, endpoint, stopWatch.taken()));
}
}
public static class MySplitter {
public Iterator<String[]> rowIterator() {
// we would normally be reading a large file but for this test,
// we'll just manufacture a bunch of string
// arrays
LinkedList<String[]> rows = new LinkedList<String[]>();
String[] row;
for (int i = 0; i < 10000; i++) {
row = new String[10];
for (int j = 0; j < row.length; j++) {
row[j] = String.valueOf(System.nanoTime());
}
rows.add(row);
}
return rows.iterator();
}
}
public static class MyAggregationStrategy implements AggregationStrategy {
@Override
public Exchange aggregate(Exchange oldExchange, Exchange newExchange) {
// emulate some processing
Random random = new Random(System.currentTimeMillis());
for (int i = 0; i < 10000; i++) {
random.nextGaussian();
}
return newExchange;
}
}
}