Page Speed Optimization Libraries
1.8.31.2
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00001 /* 00002 * Copyright 2010 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 00021 00022 #ifndef NET_INSTAWEB_REWRITER_PUBLIC_OUTPUT_RESOURCE_H_ 00023 #define NET_INSTAWEB_REWRITER_PUBLIC_OUTPUT_RESOURCE_H_ 00024 00025 #include "net/instaweb/http/public/request_context.h" 00026 #include "net/instaweb/rewriter/public/output_resource_kind.h" 00027 #include "net/instaweb/rewriter/public/resource.h" 00028 #include "net/instaweb/rewriter/public/resource_namer.h" 00029 #include "net/instaweb/util/public/basictypes.h" 00030 #include "net/instaweb/util/public/ref_counted_ptr.h" 00031 #include "net/instaweb/util/public/string.h" 00032 #include "net/instaweb/util/public/string_util.h" 00033 00034 namespace net_instaweb { 00035 00036 class CachedResult; 00037 class MessageHandler; 00038 class RewriteOptions; 00039 class ServerContext; 00040 class Writer; 00041 struct ContentType; 00042 00043 class OutputResource : public Resource { 00044 public: 00053 OutputResource(ServerContext* server_context, 00054 const StringPiece& resolved_base, 00055 const StringPiece& unmapped_base, 00056 const StringPiece& original_base, 00057 const ResourceNamer& resource_id, 00058 const RewriteOptions* options, 00059 OutputResourceKind kind); 00060 00061 virtual void LoadAndCallback(NotCacheablePolicy not_cacheable_policy, 00062 const RequestContextPtr& request_context, 00063 AsyncCallback* callback); 00070 virtual GoogleString url() const; 00074 GoogleString UrlEvenIfHashNotSet(); 00075 00080 void DumpToDisk(MessageHandler* handler); 00081 00084 void UpdateCachedResultPreservingInputInfo(CachedResult* to_update) const; 00085 00099 virtual GoogleString name_key() const; 00100 00110 GoogleString HttpCacheKey() const; 00111 00113 const GoogleString& resolved_base() const { return resolved_base_; } 00114 const GoogleString& unmapped_base() const { return unmapped_base_; } 00115 const GoogleString& original_base() const { return original_base_; } 00116 const ResourceNamer& full_name() const { return full_name_; } 00117 ResourceNamer* mutable_full_name() { return &full_name_; } 00118 StringPiece name() const { return full_name_.name(); } 00119 StringPiece experiment() const { return full_name_.experiment(); } 00120 StringPiece suffix() const; 00121 StringPiece filter_prefix() const { return full_name_.id(); } 00122 StringPiece hash() const { return full_name_.hash(); } 00123 bool has_hash() const { return !hash().empty(); } 00124 void clear_hash() { 00125 full_name_.ClearHash(); 00126 computed_url_.clear(); 00127 } 00128 00138 GoogleString decoded_base() const; 00139 00147 bool IsWritten() const { return writing_complete_; } 00148 00150 virtual void SetType(const ContentType* type); 00151 00164 const CachedResult* cached_result() const { return cached_result_; } 00165 00173 CachedResult* EnsureCachedResultCreated(); 00174 00175 void clear_cached_result(); 00176 00179 void set_cached_result(CachedResult* cached_result) { 00180 clear_cached_result(); 00181 cached_result_ = cached_result; 00182 } 00183 00184 OutputResourceKind kind() const { return kind_; } 00185 00187 void SetWritten(bool written) { writing_complete_ = true; } 00188 00189 virtual const RewriteOptions* rewrite_options() const { 00190 return rewrite_options_; 00191 } 00192 00196 Writer* BeginWrite(MessageHandler* message_handler); 00197 void EndWrite(MessageHandler* message_handler); 00198 00199 virtual bool UseHttpCache() const { return true; } 00200 00201 protected: 00202 virtual ~OutputResource(); 00203 REFCOUNT_FRIEND_DECLARATION(OutputResource); 00204 00205 private: 00206 friend class RewriteDriver; 00207 friend class ServerContext; 00208 friend class ServerContextTest; 00209 00210 void SetHash(const StringPiece& hash); 00211 StringPiece extension() const { return full_name_.ext(); } 00212 00214 GoogleString DumpFileName() const; 00215 00216 bool writing_complete_; 00217 00224 bool cached_result_owned_; 00225 CachedResult* cached_result_; 00226 00245 GoogleString resolved_base_; 00246 GoogleString unmapped_base_; 00247 GoogleString original_base_; 00248 00249 ResourceNamer full_name_; 00250 00252 mutable GoogleString computed_url_; 00253 00254 const RewriteOptions* rewrite_options_; 00255 00258 OutputResourceKind kind_; 00259 00260 DISALLOW_COPY_AND_ASSIGN(OutputResource); 00261 }; 00262 00263 } 00264 00265 #endif ///< NET_INSTAWEB_REWRITER_PUBLIC_OUTPUT_RESOURCE_H_