/*
* Copyright 2000-2015 JetBrains s.r.o.
*
* 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 org.jetbrains.io;
import com.intellij.ide.XmlRpcServer;
import com.intellij.openapi.Disposable;
import com.intellij.openapi.diagnostic.Logger;
import com.intellij.openapi.util.Disposer;
import com.intellij.util.net.NetUtils;
import io.netty.bootstrap.ServerBootstrap;
import io.netty.channel.Channel;
import io.netty.channel.ChannelHandler;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.ChannelInitializer;
import io.netty.handler.codec.http.FullHttpRequest;
import io.netty.handler.codec.http.HttpMethod;
import io.netty.handler.codec.http.QueryStringDecoder;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.ide.CustomPortServerManager;
import java.net.InetSocketAddress;
import java.util.Map;
import static com.intellij.util.io.NettyKt.serverBootstrap;
public final class SubServer implements CustomPortServerManager.CustomPortService, Disposable {
private ChannelRegistrar channelRegistrar;
private final CustomPortServerManager user;
private final BuiltInServer server;
public SubServer(@NotNull CustomPortServerManager user, @NotNull BuiltInServer server) {
this.user = user;
this.server = server;
user.setManager(this);
}
public boolean bind(int port) {
if (port == server.getPort() || port == -1) {
return true;
}
if (channelRegistrar == null) {
Disposer.register(server, this);
channelRegistrar = new ChannelRegistrar();
}
ServerBootstrap bootstrap = serverBootstrap(server.getEventLoopGroup());
Map<String, Object> xmlRpcHandlers = user.createXmlRpcHandlers();
if (xmlRpcHandlers == null) {
BuiltInServer.configureChildHandler(bootstrap, channelRegistrar, null);
}
else {
final XmlRpcDelegatingHttpRequestHandler handler = new XmlRpcDelegatingHttpRequestHandler(xmlRpcHandlers);
bootstrap.childHandler(new ChannelInitializer() {
@Override
protected void initChannel(Channel channel) throws Exception {
channel.pipeline().addLast(channelRegistrar);
NettyUtil.addHttpServerCodec(channel.pipeline());
channel.pipeline().addLast(handler);
}
});
}
try {
bootstrap.localAddress(user.isAvailableExternally() ? new InetSocketAddress(port) : NetUtils.loopbackSocketAddress(port));
channelRegistrar.setServerChannel(bootstrap.bind().syncUninterruptibly().channel(), false);
return true;
}
catch (Exception e) {
try {
NettyUtil.log(e, Logger.getInstance(BuiltInServer.class));
}
finally {
user.cannotBind(e, port);
}
return false;
}
}
@Override
public boolean isBound() {
return channelRegistrar != null && !channelRegistrar.isEmpty();
}
private void stop() {
if (channelRegistrar != null) {
channelRegistrar.close();
}
}
@Override
public boolean rebind() {
stop();
return bind(user.getPort());
}
@Override
public void dispose() {
stop();
user.setManager(null);
}
@ChannelHandler.Sharable
private static final class XmlRpcDelegatingHttpRequestHandler extends DelegatingHttpRequestHandlerBase {
private final Map<String, Object> handlers;
public XmlRpcDelegatingHttpRequestHandler(Map<String, Object> handlers) {
this.handlers = handlers;
}
@Override
protected boolean process(@NotNull ChannelHandlerContext context, @NotNull FullHttpRequest request, @NotNull QueryStringDecoder urlDecoder) {
if (handlers.isEmpty()) {
// not yet initialized, for example, P2PTransport could add handlers after we bound.
return false;
}
return request.method() == HttpMethod.POST && XmlRpcServer.SERVICE.getInstance().process(urlDecoder.path(), request, context, handlers);
}
}
}