/*
* Copyright 2013, The Sporting Exchange Limited
*
* 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 com.betfair.cougar.transport.jetty;
import java.io.IOException;
import java.util.Enumeration;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.eclipse.jetty.server.Handler;
import org.eclipse.jetty.server.Request;
import org.eclipse.jetty.server.handler.AbstractHandler;
import org.eclipse.jetty.server.handler.ContextHandler;
import org.eclipse.jetty.servlets.GzipFilter;
public class GzipHandler extends AbstractHandler {
private GzipFilter gzipFilter ;
private Handler wrappedHandler;
public GzipHandler(final int bufferSize,
final int minGzipSize,
final String excludedAgents,
Handler wrappedHandler) throws ServletException {
this.wrappedHandler = wrappedHandler;
this.gzipFilter = new GzipFilter();
this.gzipFilter.init(new FilterConfig() {
@Override
public String getFilterName() {
return "gzipFilter";
}
@Override
public String getInitParameter(String name) {
if ("bufferSize".equals(name)) return Integer.toString(bufferSize);
if ("minGzipSize".equals(name)) return Integer.toString(minGzipSize);
if ("excludedAgents".equals(name)) return excludedAgents;
return null;
}
@Override
public Enumeration getInitParameterNames() {
return null;
}
@Override
public ServletContext getServletContext() {
return new ContextHandler.NoContext();
}});
}
@Override
public void handle(String target, Request baseRequest, HttpServletRequest request, HttpServletResponse response) throws IOException, ServletException {
Chain chain = new Chain(target, baseRequest, wrappedHandler);
gzipFilter.doFilter(request, response, chain);
}
private static class Chain implements FilterChain {
private Handler handler;
private Request baseRequest;
private String target;
public Chain(String target, Request baseRequest, Handler wrappedHandler) {
this.target = target;
this.baseRequest = baseRequest;
this.handler = wrappedHandler;
}
@Override
public void doFilter(ServletRequest request, ServletResponse response) throws IOException, ServletException {
handler.handle(target, baseRequest, (HttpServletRequest)request, (HttpServletResponse)response);
}
}
}