/*
* Copyright (C) 2012-2013 Facebook, Inc.
*
* 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 com.facebook.nifty.client;
import com.facebook.nifty.client.socks.Socks4ClientBootstrap;
import com.facebook.nifty.core.ShutdownUtil;
import com.google.common.util.concurrent.AbstractFuture;
import com.google.common.util.concurrent.ListenableFuture;
import io.airlift.units.Duration;
import org.apache.thrift.transport.TTransportException;
import org.jboss.netty.bootstrap.ClientBootstrap;
import org.jboss.netty.channel.Channel;
import org.jboss.netty.channel.ChannelFuture;
import org.jboss.netty.channel.ChannelFutureListener;
import org.jboss.netty.channel.group.ChannelGroup;
import org.jboss.netty.channel.group.DefaultChannelGroup;
import org.jboss.netty.channel.socket.nio.NioClientBossPool;
import org.jboss.netty.channel.socket.nio.NioClientSocketChannelFactory;
import org.jboss.netty.channel.socket.nio.NioWorkerPool;
import org.jboss.netty.util.ThreadNameDeterminer;
import org.jboss.netty.util.Timer;
import javax.annotation.Nullable;
import java.io.Closeable;
import java.net.InetSocketAddress;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.TimeUnit;
import static com.google.common.base.Preconditions.checkNotNull;
public class NiftyClient implements Closeable
{
public static final Duration DEFAULT_CONNECT_TIMEOUT = new Duration(2, TimeUnit.SECONDS);
public static final Duration DEFAULT_RECEIVE_TIMEOUT = new Duration(2, TimeUnit.SECONDS);
public static final Duration DEFAULT_READ_TIMEOUT = new Duration(2, TimeUnit.SECONDS);
private static final Duration DEFAULT_SEND_TIMEOUT = new Duration(2, TimeUnit.SECONDS);
private static final int DEFAULT_MAX_FRAME_SIZE = 16777216;
private final NettyClientConfig nettyClientConfig;
private final ExecutorService bossExecutor;
private final ExecutorService workerExecutor;
private final NioClientSocketChannelFactory channelFactory;
private final InetSocketAddress defaultSocksProxyAddress;
private final ChannelGroup allChannels = new DefaultChannelGroup();
private final Timer timer;
/**
* Creates a new NiftyClient with defaults: cachedThreadPool for bossExecutor and workerExecutor
*/
public NiftyClient()
{
this(NettyClientConfig.newBuilder().build());
}
public NiftyClient(NettyClientConfig nettyClientConfig)
{
this.nettyClientConfig = nettyClientConfig;
this.timer = nettyClientConfig.getTimer();
this.bossExecutor = nettyClientConfig.getBossExecutor();
this.workerExecutor = nettyClientConfig.getWorkerExecutor();
this.defaultSocksProxyAddress = nettyClientConfig.getDefaultSocksProxyAddress();
int bossThreadCount = nettyClientConfig.getBossThreadCount();
int workerThreadCount = nettyClientConfig.getWorkerThreadCount();
NioWorkerPool workerPool = new NioWorkerPool(workerExecutor, workerThreadCount, ThreadNameDeterminer.CURRENT);
NioClientBossPool bossPool = new NioClientBossPool(bossExecutor, bossThreadCount, timer, ThreadNameDeterminer.CURRENT);
this.channelFactory = new NioClientSocketChannelFactory(bossPool, workerPool);
}
public <T extends NiftyClientChannel> ListenableFuture<T> connectAsync(
NiftyClientConnector<T> clientChannelConnector)
{
return connectAsync(clientChannelConnector,
DEFAULT_CONNECT_TIMEOUT,
DEFAULT_RECEIVE_TIMEOUT,
DEFAULT_READ_TIMEOUT,
DEFAULT_SEND_TIMEOUT,
DEFAULT_MAX_FRAME_SIZE,
defaultSocksProxyAddress);
}
/**
* @deprecated Use {@link NiftyClient#connectAsync(NiftyClientConnector, Duration, Duration, Duration, Duration, int)}.
*/
@Deprecated
public <T extends NiftyClientChannel> ListenableFuture<T> connectAsync(
NiftyClientConnector<T> clientChannelConnector,
@Nullable Duration connectTimeout,
@Nullable Duration receiveTimeout,
@Nullable Duration sendTimeout,
int maxFrameSize)
{
return connectAsync(clientChannelConnector,
connectTimeout,
receiveTimeout,
receiveTimeout,
sendTimeout,
maxFrameSize);
}
public <T extends NiftyClientChannel> ListenableFuture<T> connectAsync(
NiftyClientConnector<T> clientChannelConnector,
@Nullable Duration connectTimeout,
@Nullable Duration receiveTimeout,
@Nullable Duration readTimeout,
@Nullable Duration sendTimeout,
int maxFrameSize)
{
return connectAsync(clientChannelConnector,
connectTimeout,
receiveTimeout,
readTimeout,
sendTimeout,
maxFrameSize,
defaultSocksProxyAddress);
}
/**
* @deprecated Use {@link NiftyClient#connectAsync(NiftyClientConnector, Duration, Duration, Duration, Duration, int, InetSocketAddress)}.
*/
@Deprecated
public <T extends NiftyClientChannel> ListenableFuture<T> connectAsync(
NiftyClientConnector<T> clientChannelConnector,
@Nullable Duration connectTimeout,
@Nullable Duration receiveTimeout,
@Nullable Duration sendTimeout,
int maxFrameSize,
@Nullable InetSocketAddress socksProxyAddress)
{
return connectAsync(clientChannelConnector,
connectTimeout,
receiveTimeout,
receiveTimeout,
sendTimeout,
maxFrameSize,
socksProxyAddress);
}
public <T extends NiftyClientChannel> ListenableFuture<T> connectAsync(
NiftyClientConnector<T> clientChannelConnector,
@Nullable Duration connectTimeout,
@Nullable Duration receiveTimeout,
@Nullable Duration readTimeout,
@Nullable Duration sendTimeout,
int maxFrameSize,
@Nullable InetSocketAddress socksProxyAddress)
{
checkNotNull(clientChannelConnector, "clientChannelConnector is null");
ClientBootstrap bootstrap = createClientBootstrap(socksProxyAddress);
bootstrap.setOptions(nettyClientConfig.getBootstrapOptions());
if (connectTimeout != null) {
bootstrap.setOption("connectTimeoutMillis", connectTimeout.toMillis());
}
bootstrap.setPipelineFactory(clientChannelConnector.newChannelPipelineFactory(maxFrameSize));
ChannelFuture nettyChannelFuture = clientChannelConnector.connect(bootstrap);
nettyChannelFuture.addListener(new ChannelFutureListener() {
@Override
public void operationComplete(ChannelFuture future) throws Exception {
Channel channel = future.getChannel();
if (channel != null && channel.isOpen()) {
allChannels.add(channel);
}
}
});
return new TNiftyFuture<>(clientChannelConnector,
receiveTimeout,
sendTimeout,
nettyChannelFuture);
}
// trying to mirror the synchronous nature of TSocket as much as possible here.
public TNiftyClientTransport connectSync(InetSocketAddress addr)
throws TTransportException, InterruptedException
{
return connectSync(addr, DEFAULT_CONNECT_TIMEOUT, DEFAULT_RECEIVE_TIMEOUT, DEFAULT_SEND_TIMEOUT, DEFAULT_MAX_FRAME_SIZE);
}
public TNiftyClientTransport connectSync(
InetSocketAddress addr,
@Nullable Duration connectTimeout,
@Nullable Duration receiveTimeout,
@Nullable Duration sendTimeout,
int maxFrameSize)
throws TTransportException, InterruptedException
{
return connectSync(addr, connectTimeout, receiveTimeout, sendTimeout, maxFrameSize, defaultSocksProxyAddress);
}
public TNiftyClientTransport connectSync(
InetSocketAddress addr,
@Nullable Duration connectTimeout,
@Nullable Duration receiveTimeout,
@Nullable Duration sendTimeout,
int maxFrameSize,
@Nullable InetSocketAddress socksProxyAddress)
throws TTransportException, InterruptedException
{
// TODO: implement send timeout for sync client
ClientBootstrap bootstrap = createClientBootstrap(socksProxyAddress);
bootstrap.setOptions(nettyClientConfig.getBootstrapOptions());
if (connectTimeout != null) {
bootstrap.setOption("connectTimeoutMillis", connectTimeout.toMillis());
}
bootstrap.setPipelineFactory(new NiftyClientChannelPipelineFactory(maxFrameSize));
ChannelFuture f = bootstrap.connect(addr);
f.await();
Channel channel = f.getChannel();
if (f.getCause() != null) {
String message = String.format("unable to connect to %s:%d %s",
addr.getHostName(),
addr.getPort(),
socksProxyAddress == null ? "" : "via socks proxy at " + socksProxyAddress);
throw new TTransportException(message, f.getCause());
}
if (f.isSuccess() && channel != null) {
if (channel.isOpen()) {
allChannels.add(channel);
}
TNiftyClientTransport transport = new TNiftyClientTransport(channel, receiveTimeout);
channel.getPipeline().addLast("thrift", transport);
return transport;
}
throw new TTransportException(String.format(
"unknown error connecting to %s:%d %s",
addr.getHostName(),
addr.getPort(),
socksProxyAddress == null ? "" : "via socks proxy at " + socksProxyAddress
));
}
@Override
public void close()
{
// Stop the timer thread first, so no timeouts can fire during the rest of the
// shutdown process
timer.stop();
ShutdownUtil.shutdownChannelFactory(channelFactory,
bossExecutor,
workerExecutor,
allChannels);
}
private ClientBootstrap createClientBootstrap(@Nullable InetSocketAddress socksProxyAddress)
{
if (socksProxyAddress != null) {
return new Socks4ClientBootstrap(channelFactory, socksProxyAddress);
}
else {
return new ClientBootstrap(channelFactory);
}
}
private class TNiftyFuture<T extends NiftyClientChannel> extends AbstractFuture<T>
{
private TNiftyFuture(final NiftyClientConnector<T> clientChannelConnector,
@Nullable final Duration receiveTimeout,
@Nullable final Duration sendTimeout,
final ChannelFuture channelFuture)
{
channelFuture.addListener(new ChannelFutureListener()
{
@Override
public void operationComplete(ChannelFuture future)
throws Exception
{
try {
if (future.isSuccess()) {
Channel nettyChannel = future.getChannel();
T channel = clientChannelConnector.newThriftClientChannel(nettyChannel,
timer);
channel.setReceiveTimeout(receiveTimeout);
channel.setSendTimeout(sendTimeout);
set(channel);
}
else if (future.isCancelled()) {
if (!cancel(true)) {
setException(new TTransportException("Unable to cancel client channel connection"));
}
}
else {
throw future.getCause();
}
}
catch (Throwable t) {
setException(new TTransportException("Failed to connect client channel", t));
}
}
});
}
}
}