/*
* 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.krakenapps.http.internal.dispatch;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletRequestWrapper;
import javax.servlet.ServletException;
import javax.servlet.FilterChain;
import javax.servlet.RequestDispatcher;
import org.krakenapps.http.internal.handler.FilterHandler;
import java.io.IOException;
public final class FilterPipeline
{
private final FilterHandler[] handlers;
private final ServletPipeline servletPipeline;
public FilterPipeline(FilterHandler[] handlers, ServletPipeline servletPipeline)
{
this.handlers = handlers;
this.servletPipeline = servletPipeline;
}
public void dispatch(HttpServletRequest req, HttpServletResponse res, FilterChain proceedingChain)
throws ServletException, IOException
{
FilterChain chain = new InvocationFilterChain(this.handlers, this.servletPipeline, proceedingChain);
if (this.servletPipeline.hasServletsMapped()) {
req = new RequestWrapper(req);
}
chain.doFilter(req, res);
}
private final class RequestWrapper
extends HttpServletRequestWrapper
{
public RequestWrapper(HttpServletRequest req)
{
super(req);
}
@Override
public RequestDispatcher getRequestDispatcher(String path)
{
final RequestDispatcher dispatcher = servletPipeline.getRequestDispatcher(path);
return (null != dispatcher) ? dispatcher : super.getRequestDispatcher(path);
}
}
}