/*
* Copyright 2012 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 com.facebook.presto.jdbc.internal.netty.channel.socket.oio;
import static com.facebook.presto.jdbc.internal.netty.channel.Channels.*;
import java.net.SocketAddress;
import java.util.concurrent.Executor;
import com.facebook.presto.jdbc.internal.netty.channel.ChannelEvent;
import com.facebook.presto.jdbc.internal.netty.channel.ChannelFuture;
import com.facebook.presto.jdbc.internal.netty.channel.ChannelFutureListener;
import com.facebook.presto.jdbc.internal.netty.channel.ChannelPipeline;
import com.facebook.presto.jdbc.internal.netty.channel.ChannelState;
import com.facebook.presto.jdbc.internal.netty.channel.ChannelStateEvent;
import com.facebook.presto.jdbc.internal.netty.channel.MessageEvent;
import com.facebook.presto.jdbc.internal.netty.util.ThreadNameDeterminer;
import com.facebook.presto.jdbc.internal.netty.util.ThreadRenamingRunnable;
import com.facebook.presto.jdbc.internal.netty.util.internal.DeadLockProofWorker;
class OioDatagramPipelineSink extends AbstractOioChannelSink {
private final Executor workerExecutor;
private final ThreadNameDeterminer determiner;
OioDatagramPipelineSink(Executor workerExecutor, ThreadNameDeterminer determiner) {
this.workerExecutor = workerExecutor;
this.determiner = determiner;
}
public void eventSunk(
ChannelPipeline pipeline, ChannelEvent e) throws Exception {
OioDatagramChannel channel = (OioDatagramChannel) e.getChannel();
ChannelFuture future = e.getFuture();
if (e instanceof ChannelStateEvent) {
ChannelStateEvent stateEvent = (ChannelStateEvent) e;
ChannelState state = stateEvent.getState();
Object value = stateEvent.getValue();
switch (state) {
case OPEN:
if (Boolean.FALSE.equals(value)) {
AbstractOioWorker.close(channel, future);
}
break;
case BOUND:
if (value != null) {
bind(channel, future, (SocketAddress) value);
} else {
AbstractOioWorker.close(channel, future);
}
break;
case CONNECTED:
if (value != null) {
connect(channel, future, (SocketAddress) value);
} else {
OioDatagramWorker.disconnect(channel, future);
}
break;
case INTEREST_OPS:
AbstractOioWorker.setInterestOps(channel, future, ((Integer) value).intValue());
break;
}
} else if (e instanceof MessageEvent) {
MessageEvent evt = (MessageEvent) e;
OioDatagramWorker.write(
channel, future, evt.getMessage(), evt.getRemoteAddress());
}
}
private void bind(
OioDatagramChannel channel, ChannelFuture future,
SocketAddress localAddress) {
boolean bound = false;
boolean workerStarted = false;
try {
channel.socket.bind(localAddress);
bound = true;
// Fire events
future.setSuccess();
fireChannelBound(channel, channel.getLocalAddress());
// Start the business.
DeadLockProofWorker.start(
workerExecutor,
new ThreadRenamingRunnable(
new OioDatagramWorker(channel),
"Old I/O datagram worker (" + channel + ')',
determiner));
workerStarted = true;
} catch (Throwable t) {
future.setFailure(t);
fireExceptionCaught(channel, t);
} finally {
if (bound && !workerStarted) {
AbstractOioWorker.close(channel, future);
}
}
}
private void connect(
OioDatagramChannel channel, ChannelFuture future,
SocketAddress remoteAddress) {
boolean bound = channel.isBound();
boolean connected = false;
boolean workerStarted = false;
future.addListener(ChannelFutureListener.CLOSE_ON_FAILURE);
// Clear the cached address so that the next getRemoteAddress() call
// updates the cache.
channel.remoteAddress = null;
try {
channel.socket.connect(remoteAddress);
connected = true;
// Fire events.
future.setSuccess();
if (!bound) {
fireChannelBound(channel, channel.getLocalAddress());
}
fireChannelConnected(channel, channel.getRemoteAddress());
String threadName = "Old I/O datagram worker (" + channel + ')';
if (!bound) {
// Start the business.
DeadLockProofWorker.start(
workerExecutor,
new ThreadRenamingRunnable(
new OioDatagramWorker(channel), threadName, determiner));
} else {
// Worker started by bind() - just rename.
Thread workerThread = channel.workerThread;
if (workerThread != null) {
try {
workerThread.setName(threadName);
} catch (SecurityException e) {
// Ignore.
}
}
}
workerStarted = true;
} catch (Throwable t) {
future.setFailure(t);
fireExceptionCaught(channel, t);
} finally {
if (connected && !workerStarted) {
AbstractOioWorker.close(channel, future);
}
}
}
}