| /* |
| * 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.knox.gateway.filter; |
| |
| 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 org.apache.knox.gateway.i18n.GatewaySpiMessages; |
| import org.apache.knox.gateway.i18n.messages.MessagesFactory; |
| |
| import java.io.IOException; |
| |
| public abstract class AbstractGatewayFilter implements Filter { |
| |
| public static final String SOURCE_REQUEST_URL_ATTRIBUTE_NAME = "sourceRequestUrl"; |
| public static final String TARGET_REQUEST_URL_ATTRIBUTE_NAME = "targetRequestUrl"; |
| public static final String SOURCE_REQUEST_CONTEXT_URL_ATTRIBUTE_NAME = "sourceRequestContextUrl"; |
| public static final String TARGET_SERVICE_ROLE = "targetServiceRole"; |
| // public static final String RESPONSE_STREAMER_ATTRIBUTE_NAME = "responseStreamer"; |
| private static final GatewaySpiMessages LOG = MessagesFactory.get( GatewaySpiMessages.class ); |
| |
| private FilterConfig config; |
| |
| @Override |
| public void init( FilterConfig filterConfig ) throws ServletException { |
| this.config = filterConfig; |
| } |
| |
| protected FilterConfig getConfig() { |
| return config; |
| } |
| |
| @Override |
| public void doFilter( ServletRequest request, ServletResponse response, FilterChain chain ) |
| throws IOException, ServletException { |
| try { |
| doFilter( (HttpServletRequest)request, (HttpServletResponse)response, chain ); |
| } catch( IOException | ServletException e ) { |
| LOG.failedToExecuteFilter( e ); |
| throw e; |
| } catch( Throwable t ) { |
| LOG.failedToExecuteFilter( t ); |
| throw new ServletException( t ); |
| } |
| } |
| |
| protected abstract void doFilter( HttpServletRequest request, HttpServletResponse response, FilterChain chain ) |
| throws IOException, ServletException; |
| |
| @Override |
| public void destroy() { |
| } |
| |
| //KAM:2013014[ Removing due to dependency issues. This class isn't used anyway |
| // protected boolean isUserAuthenticated( HttpServletRequest request ) { |
| // return( getAuthenticatedUser( request ) != null ); |
| // } |
| // |
| // protected Subject getAuthenticatedUser( HttpServletRequest request ) { |
| // return Subject.getSubject( AccessController.getContext() ); |
| // } |
| // |
| // protected Credentials getUserCredentials( HttpServletRequest request ) { |
| // return (Credentials)request.getAttribute( CREDENTIALS_ATTRIBUTE ); |
| // } |
| // |
| // public void setUserCredentials( HttpServletRequest request, Credentials credentials ) { |
| // request.setAttribute( CREDENTIALS_ATTRIBUTE, credentials ); |
| // } |
| //] |
| |
| } |