/*
* Copyright 2013 The Netty Project
*
* The Netty Project 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 io.netty.channel;
import io.netty.channel.embedded.EmbeddedChannel;
import io.netty.channel.group.ChannelGroup;
import io.netty.channel.group.DefaultChannelGroup;
import io.netty.util.concurrent.DefaultExecutorServiceFactory;
import io.netty.util.concurrent.DefaultPromise;
import io.netty.util.concurrent.EventExecutor;
import io.netty.util.concurrent.GlobalEventExecutor;
import io.netty.util.concurrent.Promise;
import io.netty.util.concurrent.SingleThreadEventExecutor;
import org.junit.Test;
import java.lang.reflect.Field;
import java.util.concurrent.TimeUnit;
import static org.junit.Assert.*;
public class ThreadPerChannelEventLoopGroupTest {
private static final ChannelHandler NOOP_HANDLER = new ChannelHandlerAdapter() {
@Override
public boolean isSharable() {
return true;
}
};
@Test
public void testTerminationFutureSuccessInLog() throws Exception {
for (int i = 0; i < 2; i++) {
ThreadPerChannelEventLoopGroup loopGroup = new ThreadPerChannelEventLoopGroup(64);
runTest(loopGroup);
}
}
@Test
public void testTerminationFutureSuccessReflectively() throws Exception {
Field terminationFutureField =
ThreadPerChannelEventLoopGroup.class.getDeclaredField("terminationFuture");
terminationFutureField.setAccessible(true);
final Exception[] exceptionHolder = new Exception[1];
for (int i = 0; i < 2; i++) {
ThreadPerChannelEventLoopGroup loopGroup = new ThreadPerChannelEventLoopGroup(64);
Promise<?> promise = new DefaultPromise<Void>(GlobalEventExecutor.INSTANCE) {
@Override
public Promise<Void> setSuccess(Void result) {
try {
return super.setSuccess(result);
} catch (IllegalStateException e) {
exceptionHolder[0] = e;
throw e;
}
}
};
terminationFutureField.set(loopGroup, promise);
runTest(loopGroup);
}
// The global event executor will not terminate, but this will give the test a chance to fail.
GlobalEventExecutor.INSTANCE.awaitTermination(100, TimeUnit.MILLISECONDS);
assertNull(exceptionHolder[0]);
}
private static void runTest(ThreadPerChannelEventLoopGroup loopGroup) throws InterruptedException {
int taskCount = 100;
EventExecutor testExecutor = new TestEventExecutor();
ChannelGroup channelGroup = new DefaultChannelGroup(testExecutor);
while (taskCount-- > 0) {
Channel channel = new EmbeddedChannel(NOOP_HANDLER);
loopGroup.register(channel, new DefaultChannelPromise(channel, testExecutor));
channelGroup.add(channel);
}
channelGroup.close().sync();
loopGroup.shutdownGracefully(100, 200, TimeUnit.MILLISECONDS).sync();
assertTrue(loopGroup.isTerminated());
}
private static final class TestEventExecutor extends SingleThreadEventExecutor {
TestEventExecutor() {
super(null, new DefaultExecutorServiceFactory(TestEventExecutor.class).newExecutorService(1), false);
}
@Override
protected void run() {
Runnable task = takeTask();
if (task != null) {
task.run();
updateLastExecutionTime();
}
if (confirmShutdown()) {
cleanupAndTerminate(true);
} else {
scheduleExecution();
}
}
}
}