| /* |
| * 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 org.apache.commons.io.IOUtils; |
| import org.apache.knox.gateway.util.MimeTypes; |
| |
| import javax.activation.MimeType; |
| import javax.servlet.http.HttpServletResponse; |
| import javax.servlet.http.HttpServletResponseWrapper; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.io.OutputStream; |
| |
| public abstract class GatewayResponseWrapper extends HttpServletResponseWrapper implements GatewayResponse { |
| |
| private static final String DEFAULT_MIME_TYPE = "*/*"; |
| |
| /** |
| * Constructs a response adaptor wrapping the given response. |
| * |
| * @param response the response object to wrap |
| * @throws IllegalArgumentException if the response is null |
| */ |
| public GatewayResponseWrapper( HttpServletResponse response ) { |
| super( response ); |
| } |
| |
| @Override |
| public MimeType getMimeType() { |
| String contentType = getContentType(); |
| if( contentType == null ) { |
| contentType = DEFAULT_MIME_TYPE; |
| } |
| return MimeTypes.create( contentType, getCharacterEncoding() ); |
| } |
| |
| @Override |
| public abstract OutputStream getRawOutputStream() throws IOException; |
| |
| @Override |
| public void streamResponse( InputStream input ) throws IOException { |
| streamResponse( input, getRawOutputStream() ); |
| } |
| |
| @Override |
| public void streamResponse( InputStream input, OutputStream output ) throws IOException { |
| IOUtils.copy(input, output); |
| output.close(); |
| } |
| } |