/*
* JBoss, Home of Professional Open Source
* Copyright 2008, Red Hat, Inc., and individual contributors
* by the @authors tag. See the copyright.txt in the distribution for a
* full listing of individual contributors.
*
* Licensed 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.jboss.weld.servlet;
import java.io.IOException;
import javax.enterprise.context.Conversation;
import javax.enterprise.context.spi.Context;
import javax.enterprise.inject.Instance;
import javax.faces.context.FacesContext;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpServletResponseWrapper;
import org.jboss.weld.Container;
import org.jboss.weld.bootstrap.api.helpers.RegistrySingletonProvider;
import org.jboss.weld.context.ConversationContext;
import org.jboss.weld.context.http.HttpConversationContext;
import org.jboss.weld.jsf.FacesUrlTransformer;
/**
* <p>
* A Filter for handling conversation propagation over redirects.
* </p>
* <p/>
* <p>
* This filter intercepts the call to
* {@link HttpServletResponse#sendRedirect(String)} and appends the conversation
* id request parameter to the URL if the conversation is long-running, but only
* if the request parameter is not already present.
* </p>
*
* @author Nicklas Karlsson
* @deprecated See also WELD-1262 and JBPAPP6-1664
*/
@Deprecated
public class ConversationPropagationFilter implements Filter {
private String contextId;
public void init(FilterConfig config) throws ServletException {
contextId = (String) config.getServletContext().getAttribute(Container.CONTEXT_ID_KEY);
if (contextId == null) {
contextId = RegistrySingletonProvider.STATIC_INSTANCE;
}
}
public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
if (request instanceof HttpServletRequest && response instanceof HttpServletResponse) {
response = wrapResponse((HttpServletResponse) response, ((HttpServletRequest) request).getContextPath());
}
chain.doFilter(request, response);
}
public void destroy() {
}
private ServletResponse wrapResponse(HttpServletResponse response, final String requestPath) {
return new HttpServletResponseWrapper(response) {
@Override
public void sendRedirect(String path) throws IOException {
FacesContext context = FacesContext.getCurrentInstance();
if (context != null) { // this is a JSF request
ConversationContext conversationContext = instance(contextId).select(HttpConversationContext.class).get();
if (conversationContext.isActive()) {
Conversation conversation = conversationContext.getCurrentConversation();
if (!conversation.isTransient()) {
path = new FacesUrlTransformer(path, context)
.toRedirectViewId()
.toActionUrl()
.appendConversationIdIfNecessary(conversationContext.getParameterName(), conversation.getId())
.encode();
}
}
}
super.sendRedirect(path);
}
};
}
private static Instance<Context> instance(String id) {
return Container.instance(id).deploymentManager().instance().select(Context.class);
}
}