/**
* Copyright 2005-2008 Noelios Technologies.
*
* The contents of this file are subject to the terms of the following open
* source licenses: LGPL 3.0 or LGPL 2.1 or CDDL 1.0 (the "Licenses"). You can
* select the license that you prefer but you may not use this file except in
* compliance with one of these Licenses.
*
* You can obtain a copy of the LGPL 3.0 license at
* http://www.gnu.org/licenses/lgpl-3.0.html
*
* You can obtain a copy of the LGPL 2.1 license at
* http://www.gnu.org/licenses/lgpl-2.1.html
*
* You can obtain a copy of the CDDL 1.0 license at
* http://www.sun.com/cddl/cddl.html
*
* See the Licenses for the specific language governing permissions and
* limitations under the Licenses.
*
* Alternatively, you can obtain a royaltee free commercial license with less
* limitations, transferable or non-transferable, directly at
* http://www.noelios.com/products/restlet-engine
*
* Restlet is a registered trademark of Noelios Technologies.
*/
package com.noelios.restlet.component;
import org.restlet.Component;
import org.restlet.Restlet;
import org.restlet.Route;
import org.restlet.Router;
import org.restlet.VirtualHost;
import org.restlet.data.Request;
import org.restlet.data.Response;
import org.restlet.data.Status;
/**
* Router that collects calls from all server connectors and dispatches them to
* the appropriate host routers. The host routers then dispatch them to the user
* applications.
*
* Concurrency note: instances of this class or its subclasses can be invoked by
* several threads at the same time and therefore must be thread-safe. You
* should be especially careful when storing state in member variables.
*
* @author Jerome Louvel
*/
public class ServerRouter extends Router {
/** The parent component. */
private volatile Component component;
/**
* Constructor.
*
* @param component
* The parent component.
*/
public ServerRouter(Component component) {
super((component == null) ? null : component.getContext()
.createChildContext());
this.component = component;
setRoutingMode(FIRST);
}
/**
* Returns the parent component.
*
* @return The parent component.
*/
private Component getComponent() {
return this.component;
}
/** Starts the Restlet. */
@Override
public synchronized void start() throws Exception {
// Attach all virtual hosts
for (final VirtualHost host : getComponent().getHosts()) {
getRoutes().add(new HostRoute(this, host));
}
// Also attach the default host if it exists
if (getComponent().getDefaultHost() != null) {
getRoutes().add(
new HostRoute(this, getComponent().getDefaultHost()));
}
// If no host matches, display and error page with a precise message
final Restlet noHostMatched = new Restlet(getComponent().getContext()
.createChildContext()) {
@Override
public void handle(Request request, Response response) {
response.setStatus(Status.CLIENT_ERROR_NOT_FOUND,
"No virtual host could handle the request");
}
};
setDefaultRoute(new Route(this, "", noHostMatched));
// Start the router
super.start();
}
@Override
public synchronized void stop() throws Exception {
getRoutes().clear();
super.stop();
}
}