/*
* 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.mod_cluster.undertow;
import io.undertow.servlet.api.Deployment;
import java.security.AccessController;
import java.util.concurrent.Executors;
import java.util.concurrent.ScheduledExecutorService;
import java.util.concurrent.ThreadFactory;
import java.util.concurrent.TimeUnit;
import org.jboss.logging.Logger;
import org.jboss.modcluster.container.Connector;
import org.jboss.modcluster.container.ContainerEventHandler;
import org.jboss.modcluster.container.Context;
import org.jboss.modcluster.container.Engine;
import org.jboss.modcluster.container.Server;
import org.jboss.msc.service.Service;
import org.jboss.msc.service.StartContext;
import org.jboss.msc.service.StopContext;
import org.jboss.msc.value.Value;
import org.jboss.threads.JBossThreadFactory;
import org.wildfly.extension.undertow.ListenerService;
import org.wildfly.extension.undertow.Host;
import org.wildfly.extension.undertow.UndertowEventListener;
import org.wildfly.extension.undertow.UndertowService;
import org.wildfly.security.manager.action.GetAccessControlContextAction;
/**
* Service exposing an Undertow subsystem adapter to mod_cluster's ContainerEventHandler.
*
* @author Paul Ferraro
*/
public class UndertowEventHandlerAdapter implements UndertowEventListener, Service<Void>, Runnable {
private static final Logger log = Logger.getLogger(UndertowEventHandlerAdapter.class);
@SuppressWarnings("rawtypes")
private final Value<ListenerService> listener;
private final Value<UndertowService> service;
private final Value<ContainerEventHandler> eventHandler;
private volatile ScheduledExecutorService executor;
private volatile Server server;
private volatile Connector connector;
private int statusInterval;
public UndertowEventHandlerAdapter(Value<ContainerEventHandler> eventHandler, Value<UndertowService> service, @SuppressWarnings("rawtypes") Value<ListenerService> listener, int statusInterval) {
this.eventHandler = eventHandler;
this.service = service;
this.listener = listener;
this.statusInterval = statusInterval;
}
@Override
public Void getValue() {
return null;
}
@Override
public void start(StartContext context) {
UndertowService service = this.service.getValue();
ContainerEventHandler eventHandler = this.eventHandler.getValue();
this.connector = new UndertowConnector(this.listener.getValue());
this.server = new UndertowServer(service, connector);
// Register ourselves as a listener to the container events
service.registerListener(this);
// Initialize mod_cluster and start it now
eventHandler.init(this.server);
eventHandler.start(this.server);
// Start the periodic STATUS thread
ThreadGroup group = new ThreadGroup(UndertowEventHandlerAdapter.class.getSimpleName());
ThreadFactory factory = new JBossThreadFactory(group, Boolean.FALSE, null, "%G - %t", null, null, AccessController.doPrivileged(GetAccessControlContextAction.getInstance()));
this.executor = Executors.newScheduledThreadPool(1, factory);
this.executor.scheduleWithFixedDelay(this, 0, statusInterval, TimeUnit.SECONDS);
}
@Override
public void stop(StopContext context) {
this.service.getValue().unregisterListener(this);
this.executor.shutdown();
ContainerEventHandler eventHandler = this.eventHandler.getValue();
eventHandler.stop(this.server);
}
private Context createContext(Deployment deployment, Host host) {
return new UndertowContext(deployment, new UndertowHost(host, new UndertowEngine(host.getServer().getValue(), this.service.getValue(), this.connector)));
}
@Override
public void onDeploymentStart(Deployment deployment, Host host) {
Context context = this.createContext(deployment, host);
this.eventHandler.getValue().add(context);
// TODO break into onDeploymentAdd once implemented in Undertow
this.eventHandler.getValue().start(context);
}
@Override
public void onDeploymentStop(Deployment deployment, Host host) {
Context context = this.createContext(deployment, host);
this.eventHandler.getValue().stop(context);
// TODO break into onDeploymentRemove once implemented in Undertow
this.eventHandler.getValue().remove(context);
}
@Override
public void onShutdown() {
// Do nothing
}
@Override
public void onHostStart(Host host) {
// Do nothing
}
@Override
public void onHostStop(Host host) {
// Do nothing
}
@Override
public void onServerStart(org.wildfly.extension.undertow.Server server) {
// Do nothing
}
@Override
public void onServerStop(org.wildfly.extension.undertow.Server server) {
// Do nothing
}
@Override
public void run() {
try {
for (Engine engine : this.server.getEngines()) {
this.eventHandler.getValue().status(engine);
}
} catch (Throwable e) {
log.error(e.getMessage(), e);
}
}
}