/**
* Copyright 2005-2011 Noelios Technologies.
*
* The contents of this file are subject to the terms of one of the following
* open source licenses: LGPL 3.0 or LGPL 2.1 or CDDL 1.0 or EPL 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.opensource.org/licenses/lgpl-3.0.html
*
* You can obtain a copy of the LGPL 2.1 license at
* http://www.opensource.org/licenses/lgpl-2.1.php
*
* You can obtain a copy of the CDDL 1.0 license at
* http://www.opensource.org/licenses/cddl1.php
*
* You can obtain a copy of the EPL 1.0 license at
* http://www.opensource.org/licenses/eclipse-1.0.php
*
* See the Licenses for the specific language governing permissions and
* limitations under the Licenses.
*
* Alternatively, you can obtain a royalty 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 org.restlet.engine.component;
import java.util.Iterator;
import org.restlet.Component;
import org.restlet.Request;
import org.restlet.Response;
import org.restlet.data.LocalReference;
import org.restlet.data.Protocol;
import org.restlet.engine.TemplateDispatcher;
import org.restlet.routing.VirtualHost;
/**
* Component client dispatcher.
*
* 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 as member variables.
*
* @author Jerome Louvel
*/
public class ComponentClientDispatcher extends TemplateDispatcher {
/**
* Constructor.
*
* @param componentContext
* The component context.
*/
public ComponentClientDispatcher(ComponentContext componentContext) {
super(componentContext);
}
@Override
protected void doHandle(Request request, Response response) {
super.doHandle(request, response);
Protocol protocol = request.getProtocol();
if (protocol.equals(Protocol.RIAP)) {
// Let's dispatch it
final LocalReference cr = new LocalReference(request
.getResourceRef());
final Component component = getComponent();
if (component != null) {
if (cr.getRiapAuthorityType() == LocalReference.RIAP_COMPONENT) {
// This causes the baseRef of the resource reference to be
// set as if it had actually arrived from a server
// connector.
request.getResourceRef().setBaseRef(
request.getResourceRef().getHostIdentifier());
// Ask the private internal route to handle the call
component.getInternalRouter().handle(request, response);
} else if (cr.getRiapAuthorityType() == LocalReference.RIAP_HOST) {
VirtualHost host = null;
VirtualHost currentHost = null;
final Integer hostHashCode = VirtualHost.getCurrent();
// Lookup the virtual host
for (final Iterator<VirtualHost> hostIter = getComponent()
.getHosts().iterator(); (host == null)
&& hostIter.hasNext();) {
currentHost = hostIter.next();
if (currentHost.hashCode() == hostHashCode) {
host = currentHost;
}
}
if ((host == null) && (component.getDefaultHost() != null)) {
if (component.getDefaultHost().hashCode() == hostHashCode) {
host = component.getDefaultHost();
}
}
if (host != null) {
// This causes the baseRef of the resource reference to
// be set as if it had actually arrived from a server
// connector.
request.getResourceRef().setBaseRef(
request.getResourceRef().getHostIdentifier());
// Ask the virtual host to handle the call
host.handle(request, response);
} else {
getLogger()
.warning(
"No virtual host is available to route the RIAP Host request.");
}
} else {
getLogger()
.warning(
"Unknown RIAP authority. Only \"component\" is supported.");
}
} else {
getLogger().warning(
"No component is available to route the RIAP request.");
}
} else {
getComponentContext().getComponentHelper().getClientRouter()
.handle(request, response);
}
}
/**
* Returns the parent component.
*
* @return The parent component.
*/
private Component getComponent() {
Component result = null;
if ((getComponentContext() != null)
&& (getComponentContext().getComponentHelper() != null)) {
result = getComponentContext().getComponentHelper().getHelped();
}
return result;
}
/**
* Returns the component context.
*
* @return The component context.
*/
private ComponentContext getComponentContext() {
return (ComponentContext) getContext();
}
}