Page Speed Optimization Libraries
1.8.31.3
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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 "base/logging.h" 00026 #include "net/instaweb/http/public/request_context.h" 00027 #include "net/instaweb/rewriter/public/output_resource_kind.h" 00028 #include "net/instaweb/rewriter/public/resource.h" 00029 #include "net/instaweb/rewriter/public/resource_namer.h" 00030 #include "net/instaweb/util/public/basictypes.h" 00031 #include "net/instaweb/util/public/ref_counted_ptr.h" 00032 #include "net/instaweb/util/public/string.h" 00033 #include "net/instaweb/util/public/string_util.h" 00034 00035 namespace net_instaweb { 00036 00037 class CachedResult; 00038 class MessageHandler; 00039 class RewriteOptions; 00040 class ServerContext; 00041 class Writer; 00042 struct ContentType; 00043 00044 class OutputResource : public Resource { 00045 public: 00054 OutputResource(ServerContext* server_context, 00055 const StringPiece& resolved_base, 00056 const StringPiece& unmapped_base, 00057 const StringPiece& original_base, 00058 const ResourceNamer& resource_id, 00059 const RewriteOptions* options, 00060 OutputResourceKind kind); 00061 00062 virtual void LoadAndCallback(NotCacheablePolicy not_cacheable_policy, 00063 const RequestContextPtr& request_context, 00064 AsyncCallback* callback); 00071 virtual GoogleString url() const; 00075 GoogleString UrlEvenIfHashNotSet(); 00076 00081 void DumpToDisk(MessageHandler* handler); 00082 00085 void UpdateCachedResultPreservingInputInfo(CachedResult* to_update) const; 00086 00100 virtual GoogleString name_key() const; 00101 00111 GoogleString HttpCacheKey() const; 00112 00114 const GoogleString& resolved_base() const { return resolved_base_; } 00115 const GoogleString& unmapped_base() const { return unmapped_base_; } 00116 const GoogleString& original_base() const { return original_base_; } 00117 const ResourceNamer& full_name() const { return full_name_; } 00118 ResourceNamer* mutable_full_name() { return &full_name_; } 00119 StringPiece name() const { return full_name_.name(); } 00120 StringPiece experiment() const { return full_name_.experiment(); } 00121 StringPiece suffix() const; 00122 StringPiece filter_prefix() const { return full_name_.id(); } 00123 StringPiece hash() const { return full_name_.hash(); } 00124 bool has_hash() const { return !hash().empty(); } 00125 void clear_hash() { 00126 full_name_.ClearHash(); 00127 computed_url_.clear(); 00128 } 00129 00139 GoogleString decoded_base() const; 00140 00148 bool IsWritten() const { return writing_complete_; } 00149 00151 virtual void SetType(const ContentType* type); 00152 00165 const CachedResult* cached_result() const { return cached_result_; } 00166 00174 CachedResult* EnsureCachedResultCreated(); 00175 00176 void clear_cached_result(); 00177 00180 void set_cached_result(CachedResult* cached_result) { 00181 clear_cached_result(); 00182 cached_result_ = cached_result; 00183 } 00184 00185 OutputResourceKind kind() const { return kind_; } 00186 00188 void SetWritten(bool written) { writing_complete_ = true; } 00189 00190 virtual const RewriteOptions* rewrite_options() const { 00191 return rewrite_options_; 00192 } 00193 00197 Writer* BeginWrite(MessageHandler* message_handler); 00198 void EndWrite(MessageHandler* message_handler); 00199 00200 virtual bool UseHttpCache() const { return true; } 00201 00205 const GoogleString& cache_control_suffix() const { 00206 return cache_control_suffix_; 00207 } 00208 void set_cache_control_suffix(const GoogleString& x) { 00209 DCHECK(cache_control_suffix_.empty()); 00210 cache_control_suffix_ = x; 00211 } 00212 00213 protected: 00214 virtual ~OutputResource(); 00215 REFCOUNT_FRIEND_DECLARATION(OutputResource); 00216 00217 private: 00218 friend class RewriteDriver; 00219 friend class ServerContext; 00220 friend class ServerContextTest; 00221 00222 void SetHash(const StringPiece& hash); 00223 StringPiece extension() const { return full_name_.ext(); } 00224 00226 GoogleString DumpFileName() const; 00227 00228 bool writing_complete_; 00229 00236 bool cached_result_owned_; 00237 CachedResult* cached_result_; 00238 00257 GoogleString resolved_base_; 00258 GoogleString unmapped_base_; 00259 GoogleString original_base_; 00260 00261 GoogleString cache_control_suffix_; 00262 00263 ResourceNamer full_name_; 00264 00266 mutable GoogleString computed_url_; 00267 00268 const RewriteOptions* rewrite_options_; 00269 00272 OutputResourceKind kind_; 00273 00274 DISALLOW_COPY_AND_ASSIGN(OutputResource); 00275 }; 00276 00277 } 00278 00279 #endif ///< NET_INSTAWEB_REWRITER_PUBLIC_OUTPUT_RESOURCE_H_