/*
* JBoss, Home of Professional Open Source.
* Copyright 2013, Red Hat, Inc., and individual contributors
* as indicated by the @author tags. See the copyright.txt file in the
* distribution for a full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.wildfly.extension.undertow;
import java.io.IOException;
import java.net.InetSocketAddress;
import java.util.ArrayList;
import java.util.List;
import io.undertow.server.HandlerWrapper;
import io.undertow.server.HttpHandler;
import io.undertow.server.OpenListener;
import org.jboss.as.network.ManagedBinding;
import org.jboss.as.network.SocketBinding;
import org.jboss.msc.service.Service;
import org.jboss.msc.service.StartContext;
import org.jboss.msc.service.StartException;
import org.jboss.msc.service.StopContext;
import org.jboss.msc.value.InjectedValue;
import org.xnio.ByteBufferSlicePool;
import org.xnio.ChannelListener;
import org.xnio.ChannelListeners;
import org.xnio.OptionMap;
import org.xnio.Options;
import org.xnio.Pool;
import org.xnio.StreamConnection;
import org.xnio.XnioWorker;
import org.xnio.channels.AcceptingChannel;
/**
* @author Tomaz Cerar
*/
public abstract class ListenerService<T> implements Service<T> {
protected static final OptionMap commonOptions = OptionMap.builder()
.set(Options.TCP_NODELAY, true)
.set(Options.REUSE_ADDRESSES, true)
.set(Options.BALANCING_TOKENS, 1)
.set(Options.BALANCING_CONNECTIONS, 2)
.getMap();
protected final InjectedValue<XnioWorker> worker = new InjectedValue<>();
protected final InjectedValue<SocketBinding> binding = new InjectedValue<>();
protected final InjectedValue<SocketBinding> redirectSocket = new InjectedValue<>();
@SuppressWarnings("rawtypes")
protected final InjectedValue<Pool> bufferPool = new InjectedValue<>();
protected final InjectedValue<Server> serverService = new InjectedValue<>();
private final List<HandlerWrapper> listenerHandlerWrappers = new ArrayList<>();
private final String name;
protected final OptionMap listenerOptions;
protected final OptionMap socketOptions;
protected volatile OpenListener openListener;
protected ListenerService(String name, OptionMap listenerOptions, OptionMap socketOptions) {
this.name = name;
this.listenerOptions = listenerOptions;
this.socketOptions = socketOptions;
}
public InjectedValue<XnioWorker> getWorker() {
return worker;
}
public InjectedValue<SocketBinding> getBinding() {
return binding;
}
public InjectedValue<SocketBinding> getRedirectSocket() {
return redirectSocket;
}
@SuppressWarnings("rawtypes")
public InjectedValue<Pool> getBufferPool() {
return bufferPool;
}
public InjectedValue<Server> getServerService() {
return serverService;
}
protected UndertowService getUndertowService() {
return serverService.getValue().getUndertowService();
}
protected int getBufferSize() {
//not sure if this is best possible solution
if (bufferPool.getValue() instanceof ByteBufferSlicePool){
ByteBufferSlicePool pool =(ByteBufferSlicePool)bufferPool.getValue();
return pool.getBufferSize();
}
return 8192;
}
public String getName() {
return name;
}
public abstract boolean isSecure();
protected void registerBinding() {
binding.getValue().getSocketBindings().getNamedRegistry().registerBinding(new ListenerBinding(binding.getValue()));
}
protected void unregisterBinding() {
final SocketBinding binding = this.binding.getValue();
binding.getSocketBindings().getNamedRegistry().unregisterBinding(binding.getName());
}
protected abstract void preStart(StartContext context);
@Override
public void start(StartContext context) throws StartException {
preStart(context);
serverService.getValue().registerListener(this);
try {
final InetSocketAddress socketAddress = binding.getValue().getSocketAddress();
openListener = createOpenListener();
final ChannelListener<AcceptingChannel<StreamConnection>> acceptListener = ChannelListeners.openListenerAdapter(openListener);
HttpHandler handler = serverService.getValue().getRoot();
for(HandlerWrapper wrapper : listenerHandlerWrappers) {
handler = wrapper.wrap(handler);
}
openListener.setRootHandler(handler);
startListening(worker.getValue(), socketAddress, acceptListener);
registerBinding();
} catch (IOException e) {
throw new StartException("Could not start http listener", e);
}
}
@Override
public void stop(StopContext context) {
serverService.getValue().unregisterListener(this);
stopListening();
unregisterBinding();
}
void addWrapperHandler(HandlerWrapper wrapper){
listenerHandlerWrappers.add(wrapper);
}
public OpenListener getOpenListener() {
return openListener;
}
protected abstract OpenListener createOpenListener();
abstract void startListening(XnioWorker worker, InetSocketAddress socketAddress, ChannelListener<AcceptingChannel<StreamConnection>> acceptListener) throws IOException;
abstract void stopListening();
protected abstract String getProtocol();
private static class ListenerBinding implements ManagedBinding {
private final SocketBinding binding;
private ListenerBinding(final SocketBinding binding) {
this.binding = binding;
}
@Override
public String getSocketBindingName() {
return binding.getName();
}
@Override
public InetSocketAddress getBindAddress() {
return binding.getSocketAddress();
}
@Override
public void close() throws IOException {
}
}
}