/*
* Copyright 2010 the original author or authors.
*
* 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 org.gradle.api.internal.tasks.testing.processors;
import org.gradle.api.internal.Factory;
import org.gradle.api.internal.tasks.testing.TestClassProcessor;
import org.gradle.api.internal.tasks.testing.TestClassRunInfo;
import org.gradle.api.internal.tasks.testing.TestResultProcessor;
import org.gradle.messaging.actor.Actor;
import org.gradle.messaging.actor.ActorFactory;
import org.gradle.messaging.concurrent.CompositeStoppable;
import org.gradle.messaging.dispatch.DispatchException;
import org.gradle.util.UncheckedException;
import java.util.ArrayList;
import java.util.List;
/**
* Manages a set of parallel TestClassProcessors. Uses a simple round-robin algorithm to assign test classes to
* processors.
*/
public class MaxNParallelTestClassProcessor implements TestClassProcessor {
private final int maxProcessors;
private final Factory<? extends TestClassProcessor> factory;
private final ActorFactory actorFactory;
private TestResultProcessor resultProcessor;
private int pos;
private List<TestClassProcessor> processors = new ArrayList<TestClassProcessor>();
private List<Actor> actors = new ArrayList<Actor>();
private Actor resultProcessorActor;
public MaxNParallelTestClassProcessor(int maxProcessors, Factory<? extends TestClassProcessor> factory, ActorFactory actorFactory) {
this.maxProcessors = maxProcessors;
this.factory = factory;
this.actorFactory = actorFactory;
}
public void startProcessing(TestResultProcessor resultProcessor) {
resultProcessorActor = actorFactory.createActor(resultProcessor);
this.resultProcessor = resultProcessorActor.getProxy(TestResultProcessor.class);
}
public void processTestClass(TestClassRunInfo testClass) {
TestClassProcessor processor;
if (processors.size() < maxProcessors) {
processor = factory.create();
Actor actor = actorFactory.createActor(processor);
processor = actor.getProxy(TestClassProcessor.class);
actors.add(actor);
processors.add(processor);
processor.startProcessing(resultProcessor);
} else {
processor = processors.get(pos);
pos = (pos + 1) % processors.size();
}
processor.processTestClass(testClass);
}
public void stop() {
try {
new CompositeStoppable(processors).add(actors).add(resultProcessorActor).stop();
} catch (DispatchException e) {
throw UncheckedException.asUncheckedException(e.getCause());
}
}
}