1 // 2 // ======================================================================== 3 // Copyright (c) 1995-2014 Mort Bay Consulting Pty. Ltd. 4 // ------------------------------------------------------------------------ 5 // All rights reserved. This program and the accompanying materials 6 // are made available under the terms of the Eclipse Public License v1.0 7 // and Apache License v2.0 which accompanies this distribution. 8 // 9 // The Eclipse Public License is available at 10 // http://www.eclipse.org/legal/epl-v10.html 11 // 12 // The Apache License v2.0 is available at 13 // http://www.opensource.org/licenses/apache2.0.php 14 // 15 // You may elect to redistribute this code under either of these licenses. 16 // ======================================================================== 17 // 18 19 package org.eclipse.jetty.client; 20 21 import java.io.IOException; 22 23 import org.eclipse.jetty.http.HttpFields; 24 import org.eclipse.jetty.io.Buffer; 25 26 /** 27 * An exchange that retains response status and response headers for later use. 28 */ 29 public class CachedExchange extends HttpExchange 30 { 31 private final HttpFields _responseFields; 32 private volatile int _responseStatus; 33 34 /** 35 * Creates a new CachedExchange. 36 * 37 * @param cacheHeaders true to cache response headers, false to not cache them 38 */ 39 public CachedExchange(boolean cacheHeaders) 40 { 41 _responseFields = cacheHeaders ? new HttpFields() : null; 42 } 43 44 public synchronized int getResponseStatus() 45 { 46 if (getStatus() < HttpExchange.STATUS_PARSING_HEADERS) 47 throw new IllegalStateException("Response not received yet"); 48 return _responseStatus; 49 } 50 51 public synchronized HttpFields getResponseFields() 52 { 53 if (getStatus() < HttpExchange.STATUS_PARSING_CONTENT) 54 throw new IllegalStateException("Headers not completely received yet"); 55 return _responseFields; 56 } 57 58 @Override 59 protected synchronized void onResponseStatus(Buffer version, int status, Buffer reason) throws IOException 60 { 61 _responseStatus = status; 62 super.onResponseStatus(version, status, reason); 63 } 64 65 @Override 66 protected synchronized void onResponseHeader(Buffer name, Buffer value) throws IOException 67 { 68 if (_responseFields != null) 69 { 70 _responseFields.add(name, value.asImmutableBuffer()); 71 } 72 73 super.onResponseHeader(name, value); 74 } 75 } 76
