org.glassfish.jersey.netty.httpserver.JerseyServerInitializer Maven / Gradle / Ivy
/*
* Copyright (c) 2016, 2019 Oracle and/or its affiliates. All rights reserved.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v. 2.0, which is available at
* http://www.eclipse.org/legal/epl-2.0.
*
* This Source Code may also be made available under the following Secondary
* Licenses when the conditions for such availability set forth in the
* Eclipse Public License v. 2.0 are satisfied: GNU General Public License,
* version 2 with the GNU Classpath Exception, which is available at
* https://www.gnu.org/software/classpath/license.html.
*
* SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
*/
package org.glassfish.jersey.netty.httpserver;
import java.net.URI;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.ChannelInitializer;
import io.netty.channel.ChannelPipeline;
import io.netty.channel.SimpleChannelInboundHandler;
import io.netty.channel.socket.SocketChannel;
import io.netty.handler.codec.http.HttpMessage;
import io.netty.handler.codec.http.HttpServerCodec;
import io.netty.handler.codec.http.HttpServerUpgradeHandler;
import io.netty.handler.codec.http2.Http2CodecUtil;
import io.netty.handler.codec.http2.Http2MultiplexCodecBuilder;
import io.netty.handler.codec.http2.Http2ServerUpgradeCodec;
import io.netty.handler.ssl.SslContext;
import io.netty.handler.stream.ChunkedWriteHandler;
import io.netty.util.AsciiString;
import org.glassfish.jersey.server.ResourceConfig;
/**
* Jersey {@link ChannelInitializer}.
*
* Adds {@link HttpServerCodec}, {@link ChunkedWriteHandler} and {@link JerseyServerHandler} to the channels pipeline.
*
* @author Pavel Bucek
*/
class JerseyServerInitializer extends ChannelInitializer {
private final URI baseUri;
private final SslContext sslCtx;
private final NettyHttpContainer container;
private final boolean http2;
private final ResourceConfig resourceConfig;
/**
* Constructor.
*
* @param baseUri base {@link URI} of the container (includes context path, if any).
* @param sslCtx SSL context.
* @param container Netty container implementation.
* @param resourceConfig the application {@link ResourceConfig}
*/
public JerseyServerInitializer(URI baseUri, SslContext sslCtx, NettyHttpContainer container, ResourceConfig resourceConfig) {
this(baseUri, sslCtx, container, resourceConfig, false);
}
/**
* Constructor.
*
* @param baseUri base {@link URI} of the container (includes context path, if any).
* @param sslCtx SSL context.
* @param container Netty container implementation.
* @param resourceConfig the application {@link ResourceConfig}
* @param http2 Http/2 protocol support.
*/
public JerseyServerInitializer(URI baseUri, SslContext sslCtx, NettyHttpContainer container, ResourceConfig resourceConfig,
boolean http2) {
this.baseUri = baseUri;
this.sslCtx = sslCtx;
this.container = container;
this.resourceConfig = resourceConfig;
this.http2 = http2;
}
@Override
public void initChannel(SocketChannel ch) {
if (http2) {
if (sslCtx != null) {
configureSsl(ch);
} else {
configureClearText(ch);
}
} else {
ChannelPipeline p = ch.pipeline();
if (sslCtx != null) {
p.addLast(sslCtx.newHandler(ch.alloc()));
}
p.addLast(new HttpServerCodec());
p.addLast(new ChunkedWriteHandler());
p.addLast(new JerseyServerHandler(baseUri, container, resourceConfig));
}
}
/**
* Configure the pipeline for TLS NPN negotiation to HTTP/2.
*/
private void configureSsl(SocketChannel ch) {
ch.pipeline().addLast(sslCtx.newHandler(ch.alloc()), new HttpVersionChooser(baseUri, container, resourceConfig));
}
/**
* Configure the pipeline for a cleartext upgrade from HTTP to HTTP/2.
*/
private void configureClearText(SocketChannel ch) {
final ChannelPipeline p = ch.pipeline();
final HttpServerCodec sourceCodec = new HttpServerCodec();
p.addLast(sourceCodec);
p.addLast(new HttpServerUpgradeHandler(sourceCodec, new HttpServerUpgradeHandler.UpgradeCodecFactory() {
@Override
public HttpServerUpgradeHandler.UpgradeCodec newUpgradeCodec(CharSequence protocol) {
if (AsciiString.contentEquals(Http2CodecUtil.HTTP_UPGRADE_PROTOCOL_NAME, protocol)) {
return new Http2ServerUpgradeCodec(Http2MultiplexCodecBuilder.forServer(
new JerseyHttp2ServerHandler(baseUri, container, resourceConfig)).build());
} else {
return null;
}
}
}));
p.addLast(new SimpleChannelInboundHandler() {
@Override
protected void channelRead0(ChannelHandlerContext ctx, HttpMessage msg) throws Exception {
// If this handler is hit then no upgrade has been attempted and the client is just talking HTTP.
// "Directly talking: " + msg.protocolVersion() + " (no upgrade was attempted)");
ChannelPipeline pipeline = ctx.pipeline();
ChannelHandlerContext thisCtx = pipeline.context(this);
pipeline.addAfter(thisCtx.name(), null, new JerseyServerHandler(baseUri, container, resourceConfig));
pipeline.replace(this, null, new ChunkedWriteHandler());
ctx.fireChannelRead(msg);
}
});
}
}