9e29c39daa
Motivation: In next major version of netty users should use ChannelHandler everywhere. We should ensure we do the same Modifications: Replace usage of deprecated classes / interfaces with ChannelHandler Result: Use non-deprecated code
393 lines
14 KiB
Java
393 lines
14 KiB
Java
/*
|
|
* Copyright 2014 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.buffer.ByteBuf;
|
|
import io.netty.buffer.Unpooled;
|
|
import io.netty.channel.embedded.EmbeddedChannel;
|
|
import io.netty.util.CharsetUtil;
|
|
import org.junit.Ignore;
|
|
import org.junit.Test;
|
|
|
|
import java.util.ArrayList;
|
|
import java.util.Collections;
|
|
import java.util.List;
|
|
import java.util.concurrent.atomic.AtomicReference;
|
|
|
|
import static org.hamcrest.Matchers.*;
|
|
import static org.junit.Assert.*;
|
|
|
|
public class PendingWriteQueueTest {
|
|
|
|
@Test
|
|
public void testRemoveAndWrite() {
|
|
assertWrite(new TestHandler() {
|
|
@Override
|
|
public void flush(ChannelHandlerContext ctx) throws Exception {
|
|
assertFalse("Should not be writable anymore", ctx.channel().isWritable());
|
|
|
|
ChannelFuture future = queue.removeAndWrite();
|
|
future.addListener((ChannelFutureListener) future1 -> assertQueueEmpty(queue));
|
|
super.flush(ctx);
|
|
}
|
|
}, 1);
|
|
}
|
|
|
|
@Test
|
|
public void testRemoveAndWriteAll() {
|
|
assertWrite(new TestHandler() {
|
|
@Override
|
|
public void flush(ChannelHandlerContext ctx) throws Exception {
|
|
assertFalse("Should not be writable anymore", ctx.channel().isWritable());
|
|
|
|
ChannelFuture future = queue.removeAndWriteAll();
|
|
future.addListener((ChannelFutureListener) future1 -> assertQueueEmpty(queue));
|
|
super.flush(ctx);
|
|
}
|
|
}, 3);
|
|
}
|
|
|
|
@Test
|
|
public void testRemoveAndFail() {
|
|
assertWriteFails(new TestHandler() {
|
|
|
|
@Override
|
|
public void flush(ChannelHandlerContext ctx) throws Exception {
|
|
queue.removeAndFail(new TestException());
|
|
super.flush(ctx);
|
|
}
|
|
}, 1);
|
|
}
|
|
|
|
@Test
|
|
public void testRemoveAndFailAll() {
|
|
assertWriteFails(new TestHandler() {
|
|
@Override
|
|
public void flush(ChannelHandlerContext ctx) throws Exception {
|
|
queue.removeAndFailAll(new TestException());
|
|
super.flush(ctx);
|
|
}
|
|
}, 3);
|
|
}
|
|
|
|
@Test
|
|
public void shouldFireChannelWritabilityChangedAfterRemoval() {
|
|
final AtomicReference<ChannelHandlerContext> ctxRef = new AtomicReference<>();
|
|
final AtomicReference<PendingWriteQueue> queueRef = new AtomicReference<>();
|
|
final ByteBuf msg = Unpooled.copiedBuffer("test", CharsetUtil.US_ASCII);
|
|
|
|
final EmbeddedChannel channel = new EmbeddedChannel(new ChannelHandler() {
|
|
@Override
|
|
public void handlerAdded(ChannelHandlerContext ctx) throws Exception {
|
|
ctxRef.set(ctx);
|
|
queueRef.set(new PendingWriteQueue(ctx));
|
|
}
|
|
|
|
@Override
|
|
public void channelWritabilityChanged(ChannelHandlerContext ctx) throws Exception {
|
|
final PendingWriteQueue queue = queueRef.get();
|
|
|
|
final ByteBuf msg = (ByteBuf) queue.current();
|
|
if (msg == null) {
|
|
return;
|
|
}
|
|
|
|
assertThat(msg.refCnt(), is(1));
|
|
|
|
// This call will trigger another channelWritabilityChanged() event because the number of
|
|
// pending bytes will go below the low watermark.
|
|
//
|
|
// If PendingWriteQueue.remove() did not remove the current entry before triggering
|
|
// channelWritabilityChanged() event, we will end up with attempting to remove the same
|
|
// element twice, resulting in the double release.
|
|
queue.remove();
|
|
|
|
assertThat(msg.refCnt(), is(0));
|
|
}
|
|
});
|
|
|
|
channel.config().setWriteBufferLowWaterMark(1);
|
|
channel.config().setWriteBufferHighWaterMark(3);
|
|
|
|
final PendingWriteQueue queue = queueRef.get();
|
|
|
|
channel.eventLoop().execute(() -> {
|
|
// Trigger channelWritabilityChanged() by adding a message that's larger than the high watermark.
|
|
queue.add(msg, channel.newPromise());
|
|
});
|
|
|
|
channel.finish();
|
|
|
|
assertThat(msg.refCnt(), is(0));
|
|
}
|
|
|
|
private static void assertWrite(ChannelHandler handler, int count) {
|
|
final ByteBuf buffer = Unpooled.copiedBuffer("Test", CharsetUtil.US_ASCII);
|
|
final EmbeddedChannel channel = new EmbeddedChannel(handler);
|
|
channel.config().setWriteBufferLowWaterMark(1);
|
|
channel.config().setWriteBufferHighWaterMark(3);
|
|
|
|
ByteBuf[] buffers = new ByteBuf[count];
|
|
for (int i = 0; i < buffers.length; i++) {
|
|
buffers[i] = buffer.retainedDuplicate();
|
|
}
|
|
assertTrue(channel.writeOutbound(buffers));
|
|
assertTrue(channel.finish());
|
|
channel.closeFuture().syncUninterruptibly();
|
|
|
|
for (int i = 0; i < buffers.length; i++) {
|
|
assertBuffer(channel, buffer);
|
|
}
|
|
buffer.release();
|
|
assertNull(channel.readOutbound());
|
|
}
|
|
|
|
private static void assertBuffer(EmbeddedChannel channel, ByteBuf buffer) {
|
|
ByteBuf written = channel.readOutbound();
|
|
assertEquals(buffer, written);
|
|
written.release();
|
|
}
|
|
|
|
private static void assertQueueEmpty(PendingWriteQueue queue) {
|
|
assertTrue(queue.isEmpty());
|
|
assertEquals(0, queue.size());
|
|
assertEquals(0, queue.bytes());
|
|
assertNull(queue.current());
|
|
assertNull(queue.removeAndWrite());
|
|
assertNull(queue.removeAndWriteAll());
|
|
}
|
|
|
|
private static void assertWriteFails(ChannelHandler handler, int count) {
|
|
final ByteBuf buffer = Unpooled.copiedBuffer("Test", CharsetUtil.US_ASCII);
|
|
final EmbeddedChannel channel = new EmbeddedChannel(handler);
|
|
ByteBuf[] buffers = new ByteBuf[count];
|
|
for (int i = 0; i < buffers.length; i++) {
|
|
buffers[i] = buffer.retainedDuplicate();
|
|
}
|
|
try {
|
|
assertFalse(channel.writeOutbound(buffers));
|
|
fail();
|
|
} catch (Exception e) {
|
|
assertTrue(e instanceof TestException);
|
|
}
|
|
assertFalse(channel.finish());
|
|
channel.closeFuture().syncUninterruptibly();
|
|
|
|
buffer.release();
|
|
assertNull(channel.readOutbound());
|
|
}
|
|
|
|
private static EmbeddedChannel newChannel() {
|
|
// Add a handler so we can access a ChannelHandlerContext via the ChannelPipeline.
|
|
return new EmbeddedChannel(new ChannelHandler() { });
|
|
}
|
|
|
|
@Test
|
|
public void testRemoveAndFailAllReentrantFailAll() {
|
|
EmbeddedChannel channel = newChannel();
|
|
final PendingWriteQueue queue = new PendingWriteQueue(channel.pipeline().firstContext());
|
|
|
|
ChannelPromise promise = channel.newPromise();
|
|
promise.addListener((ChannelFutureListener) future -> queue.removeAndFailAll(new IllegalStateException()));
|
|
ChannelPromise promise2 = channel.newPromise();
|
|
|
|
channel.eventLoop().execute(() -> {
|
|
queue.add(1L, promise);
|
|
queue.add(2L, promise2);
|
|
queue.removeAndFailAll(new Exception());
|
|
});
|
|
|
|
assertTrue(promise.isDone());
|
|
assertFalse(promise.isSuccess());
|
|
assertTrue(promise2.isDone());
|
|
assertFalse(promise2.isSuccess());
|
|
assertFalse(channel.finish());
|
|
}
|
|
|
|
@Test
|
|
public void testRemoveAndWriteAllReentrantWrite() {
|
|
EmbeddedChannel channel = new EmbeddedChannel(new ChannelHandler() {
|
|
@Override
|
|
public void write(ChannelHandlerContext ctx, Object msg, ChannelPromise promise) {
|
|
// Convert to writeAndFlush(...) so the promise will be notified by the transport.
|
|
ctx.writeAndFlush(msg, promise);
|
|
}
|
|
}, new ChannelHandler() { });
|
|
|
|
final PendingWriteQueue queue = new PendingWriteQueue(channel.pipeline().lastContext());
|
|
|
|
ChannelPromise promise = channel.newPromise();
|
|
final ChannelPromise promise3 = channel.newPromise();
|
|
promise.addListener((ChannelFutureListener) future -> queue.add(3L, promise3));
|
|
ChannelPromise promise2 = channel.newPromise();
|
|
|
|
channel.eventLoop().execute(() -> {
|
|
queue.add(1L, promise);
|
|
queue.add(2L, promise2);
|
|
queue.removeAndWriteAll();
|
|
});
|
|
|
|
assertTrue(promise.isDone());
|
|
assertTrue(promise.isSuccess());
|
|
assertTrue(promise2.isDone());
|
|
assertTrue(promise2.isSuccess());
|
|
assertTrue(promise3.isDone());
|
|
assertTrue(promise3.isSuccess());
|
|
assertTrue(channel.finish());
|
|
assertEquals(1L, (long) channel.readOutbound());
|
|
assertEquals(2L, (long) channel.readOutbound());
|
|
assertEquals(3L, (long) channel.readOutbound());
|
|
}
|
|
|
|
@Test
|
|
public void testRemoveAndWriteAllWithVoidPromise() {
|
|
EmbeddedChannel channel = new EmbeddedChannel(new ChannelHandler() {
|
|
@Override
|
|
public void write(ChannelHandlerContext ctx, Object msg, ChannelPromise promise) {
|
|
// Convert to writeAndFlush(...) so the promise will be notified by the transport.
|
|
ctx.writeAndFlush(msg, promise);
|
|
}
|
|
}, new ChannelHandler() { });
|
|
|
|
final PendingWriteQueue queue = new PendingWriteQueue(channel.pipeline().lastContext());
|
|
|
|
ChannelPromise promise = channel.newPromise();
|
|
channel.eventLoop().execute(() -> {
|
|
queue.add(1L, promise);
|
|
queue.add(2L, channel.voidPromise());
|
|
queue.removeAndWriteAll();
|
|
});
|
|
|
|
assertTrue(channel.finish());
|
|
assertTrue(promise.isDone());
|
|
assertTrue(promise.isSuccess());
|
|
assertEquals(1L, (long) channel.readOutbound());
|
|
assertEquals(2L, (long) channel.readOutbound());
|
|
}
|
|
|
|
@Ignore("Need to verify and think about if the assumptions made by this test are valid at all.")
|
|
@Test
|
|
public void testRemoveAndFailAllReentrantWrite() {
|
|
final List<Integer> failOrder = Collections.synchronizedList(new ArrayList<>());
|
|
EmbeddedChannel channel = newChannel();
|
|
final PendingWriteQueue queue = new PendingWriteQueue(channel.pipeline().firstContext());
|
|
|
|
ChannelPromise promise = channel.newPromise();
|
|
final ChannelPromise promise3 = channel.newPromise();
|
|
promise3.addListener((ChannelFutureListener) future -> failOrder.add(3));
|
|
promise.addListener((ChannelFutureListener) future -> {
|
|
failOrder.add(1);
|
|
queue.add(3L, promise3);
|
|
});
|
|
ChannelPromise promise2 = channel.newPromise();
|
|
promise2.addListener((ChannelFutureListener) future -> failOrder.add(2));
|
|
channel.eventLoop().execute(new Runnable() {
|
|
@Override
|
|
public void run() {
|
|
queue.add(1L, promise);
|
|
queue.add(2L, promise2);
|
|
queue.removeAndFailAll(new Exception());
|
|
}
|
|
});
|
|
|
|
assertTrue(promise.isDone());
|
|
assertFalse(promise.isSuccess());
|
|
assertTrue(promise2.isDone());
|
|
assertFalse(promise2.isSuccess());
|
|
assertTrue(promise3.isDone());
|
|
assertFalse(promise3.isSuccess());
|
|
assertFalse(channel.finish());
|
|
assertEquals(1, (int) failOrder.get(0));
|
|
assertEquals(2, (int) failOrder.get(1));
|
|
assertEquals(3, (int) failOrder.get(2));
|
|
}
|
|
|
|
@Test
|
|
public void testRemoveAndWriteAllReentrance() {
|
|
EmbeddedChannel channel = newChannel();
|
|
final PendingWriteQueue queue = new PendingWriteQueue(channel.pipeline().firstContext());
|
|
|
|
ChannelPromise promise = channel.newPromise();
|
|
promise.addListener((ChannelFutureListener) future -> queue.removeAndWriteAll());
|
|
ChannelPromise promise2 = channel.newPromise();
|
|
|
|
channel.eventLoop().execute(() -> {
|
|
queue.add(1L, promise);
|
|
|
|
queue.add(2L, promise2);
|
|
queue.removeAndWriteAll();
|
|
});
|
|
|
|
channel.flush();
|
|
assertTrue(promise.isSuccess());
|
|
assertTrue(promise2.isSuccess());
|
|
assertTrue(channel.finish());
|
|
|
|
assertEquals(1L, (long) channel.readOutbound());
|
|
assertEquals(2L, (long) channel.readOutbound());
|
|
assertNull(channel.readOutbound());
|
|
assertNull(channel.readInbound());
|
|
}
|
|
|
|
// See https://github.com/netty/netty/issues/3967
|
|
@Test
|
|
public void testCloseChannelOnCreation() {
|
|
EmbeddedChannel channel = newChannel();
|
|
ChannelHandlerContext context = channel.pipeline().firstContext();
|
|
channel.close().syncUninterruptibly();
|
|
|
|
final PendingWriteQueue queue = new PendingWriteQueue(context);
|
|
|
|
IllegalStateException ex = new IllegalStateException();
|
|
ChannelPromise promise = channel.newPromise();
|
|
channel.eventLoop().execute(() -> {
|
|
queue.add(1L, promise);
|
|
queue.removeAndFailAll(ex);
|
|
});
|
|
assertSame(ex, promise.cause());
|
|
}
|
|
|
|
private static class TestHandler implements ChannelHandler {
|
|
protected PendingWriteQueue queue;
|
|
private int expectedSize;
|
|
|
|
@Override
|
|
public void channelActive(ChannelHandlerContext ctx) throws Exception {
|
|
ctx.fireChannelActive();
|
|
assertQueueEmpty(queue);
|
|
assertTrue("Should be writable", ctx.channel().isWritable());
|
|
}
|
|
|
|
@Override
|
|
public void write(ChannelHandlerContext ctx, Object msg, ChannelPromise promise) throws Exception {
|
|
queue.add(msg, promise);
|
|
assertFalse(queue.isEmpty());
|
|
assertEquals(++expectedSize, queue.size());
|
|
assertNotNull(queue.current());
|
|
}
|
|
|
|
@Override
|
|
public void handlerAdded(ChannelHandlerContext ctx) throws Exception {
|
|
queue = new PendingWriteQueue(ctx);
|
|
}
|
|
}
|
|
|
|
private static final class TestException extends Exception {
|
|
private static final long serialVersionUID = -9018570103039458401L;
|
|
}
|
|
}
|