package org.jboss.resteasy.plugins.server.netty;
import io.netty.bootstrap.ServerBootstrap;
import io.netty.channel.Channel;
import io.netty.channel.ChannelHandler;
import io.netty.channel.ChannelInitializer;
import io.netty.channel.ChannelOption;
import io.netty.channel.ChannelPipeline;
import io.netty.channel.EventLoopGroup;
import io.netty.channel.nio.NioEventLoopGroup;
import io.netty.channel.socket.SocketChannel;
import io.netty.channel.socket.nio.NioServerSocketChannel;
import io.netty.handler.codec.http.HttpObjectAggregator;
import io.netty.handler.codec.http.HttpRequestDecoder;
import io.netty.handler.codec.http.HttpResponseEncoder;
import io.netty.handler.ssl.SniHandler;
import io.netty.handler.ssl.SslHandler;
import io.netty.handler.timeout.IdleStateHandler;
import io.netty.util.concurrent.EventExecutor;
import org.jboss.resteasy.core.SynchronousDispatcher;
import org.jboss.resteasy.plugins.server.embedded.EmbeddedJaxrsServer;
import org.jboss.resteasy.plugins.server.embedded.SecurityDomain;
import org.jboss.resteasy.spi.ResteasyDeployment;
import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLEngine;
import java.net.InetSocketAddress;
import java.util.Collections;
import java.util.List;
import java.util.Map;
import static org.jboss.resteasy.plugins.server.netty.RestEasyHttpRequestDecoder.Protocol.HTTP;
import static org.jboss.resteasy.plugins.server.netty.RestEasyHttpRequestDecoder.Protocol.HTTPS;
/**
* An HTTP server that sends back the content of the received HTTP request
* in a pretty plaintext form.
*
* @author <a href="http://www.jboss.org/netty/">The Netty Project</a>
* @author Andy Taylor (andy.taylor@jboss.org)
* @author <a href="http://gleamynode.net/">Trustin Lee</a>
* @author Norman Maurer
* @version $Rev: 2080 $, $Date: 2010-01-26 18:04:19 +0900 (Tue, 26 Jan 2010) $
*/
public class NettyJaxrsServer implements EmbeddedJaxrsServer
{
protected ServerBootstrap bootstrap = new ServerBootstrap();
protected String hostname = null;
protected int configuredPort = 8080;
protected int runtimePort = -1;
protected ResteasyDeployment deployment = new ResteasyDeployment();
protected String root = "";
protected SecurityDomain domain;
private EventLoopGroup eventLoopGroup;
private EventLoopGroup eventExecutor;
private int ioWorkerCount = Runtime.getRuntime().availableProcessors() * 2;
private int executorThreadCount = 16;
private SSLContext sslContext;
private SniConfiguration sniConfiguration;
private int maxRequestSize = 1024 * 1024 * 10;
private int maxInitialLineLength = 4096;
private int maxHeaderSize = 8192;
private int maxChunkSize = 8192;
private int backlog = 128;
// default no idle timeout.
private int idleTimeout = -1;
private List<ChannelHandler> channelHandlers = Collections.emptyList();
private Map<ChannelOption, Object> channelOptions = Collections.emptyMap();
private Map<ChannelOption, Object> childChannelOptions = Collections.emptyMap();
private List<ChannelHandler> httpChannelHandlers = Collections.emptyList();
public void setSSLContext(SSLContext sslContext)
{
this.sslContext = sslContext;
}
public void setSniConfiguration(SniConfiguration sniConfiguration)
{
this.sniConfiguration = sniConfiguration;
}
public SniConfiguration getSniConfiguration()
{
return sniConfiguration;
}
/**
* Specify the worker count to use. For more information about this please see the javadocs of {@link EventLoopGroup}
*
* @param ioWorkerCount
*/
public void setIoWorkerCount(int ioWorkerCount)
{
this.ioWorkerCount = ioWorkerCount;
}
/**
* Set the number of threads to use for the EventExecutor. For more information please see the javadocs of {@link EventExecutor}.
* If you want to disable the use of the {@link EventExecutor} specify a value <= 0. This should only be done if you are 100% sure that you don't have any blocking
* code in there.
*
* @param executorThreadCount
*/
public void setExecutorThreadCount(int executorThreadCount)
{
this.executorThreadCount = executorThreadCount;
}
/**
* Set the max. request size in bytes. If this size is exceed we will send a "413 Request Entity Too Large" to the client.
*
* @param maxRequestSize the max request size. This is 10mb by default.
*/
public void setMaxRequestSize(int maxRequestSize) {
this.maxRequestSize = maxRequestSize;
}
public void setMaxInitialLineLength(int maxInitialLineLength) {
this.maxInitialLineLength = maxInitialLineLength;
}
public void setMaxHeaderSize(int maxHeaderSize) {
this.maxHeaderSize = maxHeaderSize;
}
public void setMaxChunkSize(int maxChunkSize) {
this.maxChunkSize = maxChunkSize;
}
public String getHostname() {
return hostname;
}
public void setHostname(String hostname) {
this.hostname = hostname;
}
public int getPort() {
return runtimePort > 0 ? runtimePort : configuredPort;
}
public void setPort(int port) {
this.configuredPort = port;
}
public void setBacklog(int backlog)
{
this.backlog = backlog;
}
public int getIdleTimeout() {
return idleTimeout;
}
/**
* Set the idle timeout.
* Set this value to turn on idle connection cleanup.
* If there is no traffic within idleTimeoutSeconds, it'll close connection.
* @param idleTimeoutSeconds - How many seconds to cleanup client connection. default value -1 meaning no idle timeout.
*/
public void setIdleTimeout(int idleTimeoutSeconds) {
this.idleTimeout = idleTimeoutSeconds;
}
/**
* Add additional {@link io.netty.channel.ChannelHandler}s to the {@link io.netty.bootstrap.ServerBootstrap}.
* <p>The additional channel handlers are being added <em>before</em> the HTTP handling.</p>
*
* @param channelHandlers the additional {@link io.netty.channel.ChannelHandler}s.
*/
public void setChannelHandlers(final List<ChannelHandler> channelHandlers) {
this.channelHandlers = channelHandlers == null ? Collections.<ChannelHandler>emptyList() : channelHandlers;
}
/**
* Add additional {@link io.netty.channel.ChannelHandler}s to the {@link io.netty.bootstrap.ServerBootstrap}.
* <p>The additional channel handlers are being added <em>after</em> the HTTP handling.</p>
*
* @param httpChannelHandlers the additional {@link io.netty.channel.ChannelHandler}s.
*/
public void setHttpChannelHandlers(final List<ChannelHandler> httpChannelHandlers) {
this.httpChannelHandlers = httpChannelHandlers == null ? Collections.<ChannelHandler>emptyList() : httpChannelHandlers;
}
/**
* Add Netty {@link io.netty.channel.ChannelOption}s to the {@link io.netty.bootstrap.ServerBootstrap}.
*
* @param channelOptions the additional {@link io.netty.channel.ChannelOption}s.
* @see io.netty.bootstrap.ServerBootstrap#option(io.netty.channel.ChannelOption, Object)
*/
public void setChannelOptions(final Map<ChannelOption, Object> channelOptions) {
this.channelOptions = channelOptions == null ? Collections.<ChannelOption, Object>emptyMap() : channelOptions;
}
/**
* Add child options to the {@link io.netty.bootstrap.ServerBootstrap}.
*
* @param channelOptions the additional child {@link io.netty.channel.ChannelOption}s.
* @see io.netty.bootstrap.ServerBootstrap#childOption(io.netty.channel.ChannelOption, Object)
*/
public void setChildChannelOptions(final Map<ChannelOption, Object> channelOptions) {
this.childChannelOptions = channelOptions == null ? Collections.<ChannelOption, Object>emptyMap() : channelOptions;
}
@Override
public void setDeployment(ResteasyDeployment deployment)
{
this.deployment = deployment;
}
@Override
public void setRootResourcePath(String rootResourcePath)
{
root = rootResourcePath;
if (root != null && root.equals("/")) root = "";
}
@Override
public ResteasyDeployment getDeployment()
{
return deployment;
}
@Override
public void setSecurityDomain(SecurityDomain sc)
{
this.domain = sc;
}
protected RequestDispatcher createRequestDispatcher()
{
return new RequestDispatcher((SynchronousDispatcher)deployment.getDispatcher(),
deployment.getProviderFactory(), domain);
}
@SuppressWarnings("unchecked")
@Override
public void start() {
eventLoopGroup = new NioEventLoopGroup(ioWorkerCount);
eventExecutor = new NioEventLoopGroup(executorThreadCount);
deployment.start();
// Configure the server.
bootstrap.group(eventLoopGroup)
.channel(NioServerSocketChannel.class)
.childHandler(createChannelInitializer())
.option(ChannelOption.SO_BACKLOG, backlog)
.childOption(ChannelOption.SO_KEEPALIVE, true);
for (Map.Entry<ChannelOption, Object> entry : channelOptions.entrySet()) {
bootstrap.option(entry.getKey(), entry.getValue());
}
for (Map.Entry<ChannelOption, Object> entry : childChannelOptions.entrySet()) {
bootstrap.childOption(entry.getKey(), entry.getValue());
}
final InetSocketAddress socketAddress;
if (null == hostname || hostname.isEmpty()) {
socketAddress = new InetSocketAddress(configuredPort);
} else {
socketAddress = new InetSocketAddress(hostname, configuredPort);
}
Channel channel = bootstrap.bind(socketAddress).syncUninterruptibly().channel();
runtimePort = ((InetSocketAddress) channel.localAddress()).getPort();
}
private ChannelInitializer<SocketChannel> createChannelInitializer() {
final RequestDispatcher dispatcher = createRequestDispatcher();
if (sslContext == null && sniConfiguration == null) {
return new ChannelInitializer<SocketChannel>() {
@Override
public void initChannel(SocketChannel ch) throws Exception {
setupHandlers(ch, dispatcher, HTTP);
}
};
} else if (sniConfiguration == null) {
return new ChannelInitializer<SocketChannel>() {
@Override
public void initChannel(SocketChannel ch) throws Exception {
SSLEngine engine = sslContext.createSSLEngine();
engine.setUseClientMode(false);
ch.pipeline().addFirst(new SslHandler(engine));
setupHandlers(ch, dispatcher, HTTPS);
}
};
} else {
return new ChannelInitializer<SocketChannel>() {
@Override
public void initChannel(SocketChannel ch) throws Exception {
ch.pipeline().addFirst(new SniHandler(sniConfiguration.buildMapping()));
setupHandlers(ch, dispatcher, HTTPS);
}
};
}
}
private void setupHandlers(SocketChannel ch, RequestDispatcher dispatcher, RestEasyHttpRequestDecoder.Protocol protocol) {
ChannelPipeline channelPipeline = ch.pipeline();
channelPipeline.addLast(channelHandlers.toArray(new ChannelHandler[channelHandlers.size()]));
channelPipeline.addLast(new HttpRequestDecoder(maxInitialLineLength, maxHeaderSize, maxChunkSize));
channelPipeline.addLast(new HttpObjectAggregator(maxRequestSize));
channelPipeline.addLast(new HttpResponseEncoder());
channelPipeline.addLast(httpChannelHandlers.toArray(new ChannelHandler[httpChannelHandlers.size()]));
channelPipeline.addLast(new RestEasyHttpRequestDecoder(dispatcher.getDispatcher(), root, protocol));
channelPipeline.addLast(new RestEasyHttpResponseEncoder());
if (idleTimeout > 0) {
channelPipeline.addLast("idleStateHandler", new IdleStateHandler(0, 0, idleTimeout));
}
channelPipeline.addLast(eventExecutor, new RequestHandler(dispatcher));
}
@Override
public void stop()
{
runtimePort = -1;
eventLoopGroup.shutdownGracefully();
eventExecutor.shutdownGracefully();
}
}