/**
* 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.cxf.transport.servlet;
import javax.servlet.ServletConfig;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.cxf.Bus;
import org.apache.cxf.BusException;
import org.apache.cxf.BusFactory;
import org.apache.cxf.resource.ResourceManager;
import org.apache.cxf.transport.DestinationFactory;
import org.apache.cxf.transport.DestinationFactoryManager;
import org.apache.cxf.transport.http.AbstractHTTPDestination;
import org.apache.cxf.transport.http.DestinationRegistry;
import org.apache.cxf.transport.http.HTTPTransportFactory;
import org.apache.cxf.transport.servlet.servicelist.ServiceListGeneratorServlet;
public class CXFNonSpringServlet extends AbstractHTTPServlet {
private DestinationRegistry destinationRegistry;
private Bus bus;
private ServletController controller;
private ClassLoader loader;
public CXFNonSpringServlet() {
}
public CXFNonSpringServlet(DestinationRegistry destinationRegistry) {
this.destinationRegistry = destinationRegistry;
}
@Override
public void init(ServletConfig sc) throws ServletException {
super.init(sc);
if (this.bus == null) {
loadBus(sc);
}
loader = bus.getExtension(ClassLoader.class);
ResourceManager resourceManager = bus.getExtension(ResourceManager.class);
resourceManager.addResourceResolver(new ServletContextResourceResolver(
sc.getServletContext()));
if (destinationRegistry == null) {
this.destinationRegistry = getDestinationRegistryFromBus(this.bus);
}
this.controller = createServletController(sc);
}
private static DestinationRegistry getDestinationRegistryFromBus(Bus bus) {
DestinationFactoryManager dfm = bus.getExtension(DestinationFactoryManager.class);
try {
DestinationFactory df = dfm
.getDestinationFactory("http://cxf.apache.org/transports/http/configuration");
if (df instanceof HTTPTransportFactory) {
HTTPTransportFactory transportFactory = (HTTPTransportFactory)df;
return transportFactory.getRegistry();
}
} catch (BusException e) {
// why are we throwing a busexception if the DF isn't found?
}
return null;
}
protected void loadBus(ServletConfig sc) {
this.bus = BusFactory.newInstance().createBus();
}
private ServletController createServletController(ServletConfig servletConfig) {
HttpServlet serviceListGeneratorServlet =
new ServiceListGeneratorServlet(destinationRegistry, bus);
ServletController newController =
new ServletController(destinationRegistry,
servletConfig,
serviceListGeneratorServlet);
return newController;
}
public Bus getBus() {
return bus;
}
public void setBus(Bus bus) {
this.bus = bus;
}
@Override
protected void invoke(HttpServletRequest request, HttpServletResponse response) throws ServletException {
ClassLoader origLoader = Thread.currentThread().getContextClassLoader();
try {
if (loader != null) {
Thread.currentThread().setContextClassLoader(loader);
}
BusFactory.setThreadDefaultBus(bus);
controller.invoke(request, response);
} finally {
BusFactory.setThreadDefaultBus(null);
Thread.currentThread().setContextClassLoader(origLoader);
}
}
public void destroy() {
for (String path : destinationRegistry.getDestinationsPaths()) {
// clean up the destination in case the destination itself can no longer access the registry later
AbstractHTTPDestination dest = destinationRegistry.getDestinationForPath(path);
synchronized (dest) {
destinationRegistry.removeDestination(path);
dest.releaseRegistry();
}
}
destinationRegistry = null;
destroyBus();
}
public void destroyBus() {
bus.shutdown(true);
}
}