Page Speed Optimization Libraries
1.2.24.1
|
00001 /* 00002 * Copyright 2011 Google Inc. 00003 * 00004 * Licensed under the Apache License, Version 2.0 (the "License"); 00005 * you may not use this file except in compliance with the License. 00006 * You may obtain a copy of the License at 00007 * 00008 * http:///www.apache.org/licenses/LICENSE-2.0 00009 * 00010 * Unless required by applicable law or agreed to in writing, software 00011 * distributed under the License is distributed on an "AS IS" BASIS, 00012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 00013 * See the License for the specific language governing permissions and 00014 * limitations under the License. 00015 */ 00016 00018 00019 #ifndef NET_INSTAWEB_HTTP_PUBLIC_CACHE_URL_ASYNC_FETCHER_H_ 00020 #define NET_INSTAWEB_HTTP_PUBLIC_CACHE_URL_ASYNC_FETCHER_H_ 00021 00022 #include "net/instaweb/http/public/url_async_fetcher.h" 00023 #include "net/instaweb/util/public/basictypes.h" 00024 #include "net/instaweb/util/public/string.h" 00025 00026 namespace net_instaweb { 00027 00028 class AsyncFetch; 00029 class Histogram; 00030 class HTTPCache; 00031 class MessageHandler; 00032 class Variable; 00033 00046 class CacheUrlAsyncFetcher : public UrlAsyncFetcher { 00047 public: 00048 CacheUrlAsyncFetcher(HTTPCache* cache, UrlAsyncFetcher* fetcher) 00049 : http_cache_(cache), 00050 fetcher_(fetcher), 00051 backend_first_byte_latency_(NULL), 00052 fallback_responses_served_(NULL), 00053 num_conditional_refreshes_(NULL), 00054 respect_vary_(false), 00055 ignore_recent_fetch_failed_(false), 00056 serve_stale_if_fetch_error_(false), 00057 default_cache_html_(false) { 00058 } 00059 virtual ~CacheUrlAsyncFetcher(); 00060 00061 virtual bool SupportsHttps() const { return fetcher_->SupportsHttps(); } 00062 00063 virtual void Fetch(const GoogleString& url, 00064 MessageHandler* message_handler, 00065 AsyncFetch* base_fetch); 00066 00067 HTTPCache* http_cache() const { return http_cache_; } 00068 UrlAsyncFetcher* fetcher() const { return fetcher_; } 00069 00070 void set_backend_first_byte_latency_histogram(Histogram* x) { 00071 backend_first_byte_latency_ = x; 00072 } 00073 00074 Histogram* backend_first_byte_latency_histogram() const { 00075 return backend_first_byte_latency_; 00076 } 00077 00078 void set_fallback_responses_served(Variable* x) { 00079 fallback_responses_served_ = x; 00080 } 00081 00082 Variable* fallback_responses_served() const { 00083 return fallback_responses_served_; 00084 } 00085 00086 void set_num_conditional_refreshes(Variable* x) { 00087 num_conditional_refreshes_ = x; 00088 } 00089 00090 Variable* num_conditional_refreshes() const { 00091 return num_conditional_refreshes_; 00092 } 00093 00094 void set_respect_vary(bool x) { respect_vary_ = x; } 00095 bool respect_vary() const { return respect_vary_; } 00096 00097 void set_ignore_recent_fetch_failed(bool x) { 00098 ignore_recent_fetch_failed_ = x; 00099 } 00100 bool ignore_recent_fetch_failed() const { 00101 return ignore_recent_fetch_failed_; 00102 } 00103 00104 void set_serve_stale_if_fetch_error(bool x) { 00105 serve_stale_if_fetch_error_ = x; 00106 } 00107 00108 bool serve_stale_if_fetch_error() const { 00109 return serve_stale_if_fetch_error_; 00110 } 00111 00112 void set_default_cache_html(bool x) { default_cache_html_ = x; } 00113 bool default_cache_html() const { return default_cache_html_; } 00114 00115 private: 00117 HTTPCache* http_cache_; 00118 UrlAsyncFetcher* fetcher_; 00119 00120 Histogram* backend_first_byte_latency_; 00121 Variable* fallback_responses_served_; 00122 Variable* num_conditional_refreshes_; 00123 00124 bool respect_vary_; 00125 bool ignore_recent_fetch_failed_; 00126 bool serve_stale_if_fetch_error_; 00127 bool default_cache_html_; 00128 00129 DISALLOW_COPY_AND_ASSIGN(CacheUrlAsyncFetcher); 00130 }; 00131 00132 } 00133 00134 #endif ///< NET_INSTAWEB_HTTP_PUBLIC_CACHE_URL_ASYNC_FETCHER_H_