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/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.apache.tuscany.sca.binding.rest.provider;
import java.net.URI;
import java.util.ArrayList;
import java.util.List;
import org.apache.tuscany.sca.binding.rest.RESTBinding;
import org.apache.tuscany.sca.host.http.ServletHost;
import org.apache.tuscany.sca.interfacedef.Interface;
import org.apache.tuscany.sca.interfacedef.InterfaceContract;
import org.apache.tuscany.sca.interfacedef.java.JavaInterface;
import org.apache.tuscany.sca.provider.ServiceBindingProvider;
import org.apache.tuscany.sca.runtime.RuntimeComponent;
import org.apache.tuscany.sca.runtime.RuntimeComponentService;
/**
* Implementation of the REST Binding Provider for Services
*
* @version $Rev: 683451 $ $Date: 2008-08-07 00:59:24 +0100 (Thu, 07 Aug 2008) $
*/
public class RESTServiceBindingProvider implements ServiceBindingProvider {
private RuntimeComponent component;
private RuntimeComponentService service;
private InterfaceContract serviceContract;
private RESTBinding binding;
private ServletHost servletHost;
private List<String> servletMappings = new ArrayList<String>();
public RESTServiceBindingProvider(RuntimeComponent component,
RuntimeComponentService service,
RESTBinding binding,
ServletHost servletHost) {
this.component = component;
this.service = service;
this.binding = binding;
this.servletHost = servletHost;
//clone the service contract to avoid databinding issues
try {
this.serviceContract = (InterfaceContract)service.getInterfaceContract().clone();
} catch(CloneNotSupportedException e) {
this.serviceContract = service.getInterfaceContract();
}
}
public InterfaceContract getBindingInterfaceContract() {
return service.getInterfaceContract();
}
public boolean supportsOneWayInvocation() {
return false;
}
public void start() {
// Determine the service business interface
Class<?> serviceInterface = getTargetJavaClass(serviceContract.getInterface());
// Create a Java proxy to the target service
//ProxyFactory proxyFactory = new JDKProxyFactory();
Object proxy = component.getComponentContext().createSelfReference(serviceInterface, service).getService();
//Object proxy = proxyFactory.createProxy(serviceInterface, service.getRuntimeWire(binding));
// Create and register a servlet for this service
RESTServiceServlet serviceServlet =
new RESTServiceServlet(binding, service, serviceContract, serviceInterface, proxy);
//Prateek: to add 'rest/' before the name of the service so that it could be added to url-pattern for the filter
// String tempURI = binding.getURI();
// binding.setURI("rest" + tempURI);
String mapping = binding.getURI();
if (!mapping.endsWith("/")) {
mapping += "/";
}
if (!mapping.endsWith("*")) {
mapping += "*";
}
servletHost.addServletMapping(mapping, serviceServlet);
servletMappings.add(mapping);
servletHost.addServletMapping(binding.getURI(), serviceServlet);
servletMappings.add(binding.getURI());
//Prateek: add /rest for reverse-compatibility
servletHost.addServletMapping("/rest" + mapping, serviceServlet);
servletMappings.add("/rest" + mapping);
servletHost.addServletMapping("/rest" + binding.getURI(), serviceServlet);
servletMappings.add("/rest" + binding.getURI());
// Save the actual binding URI
binding.setURI(servletHost.getURLMapping(binding.getURI()).toString());
// Register service to scaDomain.js
int port;
URI uri = URI.create(binding.getURI());
port = uri.getPort();
if (port == -1) {
port = servletHost.getDefaultPort();
}
}
public void stop() {
// Remove the servlet mappings we've added
for (String mapping: servletMappings) {
servletHost.removeServletMapping(mapping);
//Prateek: for /rest
servletHost.removeServletMapping("/rest" + mapping);
}
}
private Class<?> getTargetJavaClass(Interface targetInterface) {
// TODO: right now assume that the target is always a Java
// Implementation. Need to figure out how to generate Java
// Interface in cases where the target is not a Java Implementation
return ((JavaInterface)targetInterface).getJavaClass();
}
}
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