Page Speed Optimization Libraries
1.7.30.1
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00001 /* 00002 * Copyright 2012 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_REQUEST_CONTEXT_H_ 00020 #define NET_INSTAWEB_HTTP_PUBLIC_REQUEST_CONTEXT_H_ 00021 00022 #include <set> 00023 00024 #include "pagespeed/kernel/base/basictypes.h" 00025 #include "pagespeed/kernel/base/ref_counted_ptr.h" 00026 #include "pagespeed/kernel/base/scoped_ptr.h" 00027 #include "pagespeed/kernel/base/string.h" 00028 #include "pagespeed/kernel/base/string_util.h" 00029 00030 namespace net_instaweb { 00031 00032 class AbstractLogRecord; 00033 class AbstractMutex; 00034 class RequestContext; 00035 class RequestTrace; 00036 class ThreadSystem; 00037 class Timer; 00038 00039 typedef RefCountedPtr<RequestContext> RequestContextPtr; 00040 00048 class RequestContext : public RefCounted<RequestContext> { 00049 public: 00051 enum SplitRequestType { 00052 SPLIT_FULL, 00053 SPLIT_ABOVE_THE_FOLD, 00054 SPLIT_BELOW_THE_FOLD, 00055 }; 00056 00062 explicit RequestContext(AbstractMutex* logging_mutex, Timer* timer); 00063 00066 static RequestContextPtr NewTestRequestContext(ThreadSystem* thread_system) { 00067 return NewTestRequestContextWithTimer(thread_system, NULL); 00068 } 00069 static RequestContextPtr NewTestRequestContextWithTimer( 00070 ThreadSystem* thread_system, Timer* timer); 00071 static RequestContextPtr NewTestRequestContext(AbstractLogRecord* log_record); 00072 00076 virtual AbstractLogRecord* NewSubordinateLogRecord( 00077 AbstractMutex* logging_mutex); 00078 00083 RequestTrace* root_trace_context() { return root_trace_context_.get(); } 00085 void set_root_trace_context(RequestTrace* x); 00086 00097 virtual RequestTrace* CreateDependentTraceContext(const StringPiece& label) { 00098 return NULL; 00099 } 00100 00112 virtual void ReleaseDependentTraceContext(RequestTrace* t); 00113 00115 virtual AbstractLogRecord* log_record(); 00116 00118 bool using_spdy() const { return using_spdy_; } 00119 void set_using_spdy(bool x) { using_spdy_ = x; } 00120 00122 SplitRequestType split_request_type() const { 00123 return split_request_type_; 00124 } 00125 void set_split_request_type(SplitRequestType type) { 00126 split_request_type_ = type; 00127 } 00128 00129 int64 request_id() const { 00130 return request_id_; 00131 } 00132 void set_request_id(int64 x) { 00133 request_id_ = x; 00134 } 00135 00143 void AddSessionAuthorizedFetchOrigin(const GoogleString& origin) { 00144 session_authorized_fetch_origins_.insert(origin); 00145 } 00146 00149 bool IsSessionAuthorizedFetchOrigin(const GoogleString& origin) const { 00150 return session_authorized_fetch_origins_.find(origin) 00151 != session_authorized_fetch_origins_.end(); 00152 } 00153 00157 void PrepareLogRecordForOutput(); 00158 00160 void WriteBackgroundRewriteLog(); 00161 00164 AbstractLogRecord* GetBackgroundRewriteLog( 00165 ThreadSystem* thread_system, 00166 bool log_urls, 00167 bool log_url_indices, 00168 int max_rewrite_info_log_size); 00169 00184 class TimingInfo { 00185 public: 00189 TimingInfo(Timer* timer, AbstractMutex* mutex); 00190 00194 void RequestStarted(); 00195 00198 void ProcessingStarted() { SetToNow(&processing_start_ts_ms_); } 00199 00201 void ParsingStarted() { SetToNow(&parsing_start_ts_ms_); } 00202 00204 void FirstByteReturned(); 00205 00207 void PropertyCacheLookupStarted() { 00208 SetToNow(&pcache_lookup_start_ts_ms_); 00209 } 00210 00212 void PropertyCacheLookupFinished() { SetToNow(&pcache_lookup_end_ts_ms_); } 00213 00216 void RequestFinished() { SetToNow(&end_ts_ms_); } 00217 00223 void FetchStarted(); 00224 void FetchHeaderReceived(); 00225 void FetchFinished(); 00226 00229 void SetHTTPCacheLatencyMs(int64 latency_ms); 00230 void SetL2HTTPCacheLatencyMs(int64 latency_ms); 00231 00233 int64 GetElapsedMs() const; 00234 00236 bool GetTimeToStartProcessingMs(int64* elapsed_ms) const { 00237 return GetTimeFromStart(processing_start_ts_ms_, elapsed_ms); 00238 } 00239 00244 bool GetProcessingElapsedMs(int64* elapsed_ms) const; 00245 00247 bool GetTimeToPropertyCacheLookupStartMs(int64* elapsed_ms) const { 00248 return GetTimeFromStart(pcache_lookup_start_ts_ms_, elapsed_ms); 00249 } 00250 00252 bool GetTimeToPropertyCacheLookupEndMs(int64* elapsed_ms) const { 00253 return GetTimeFromStart(pcache_lookup_end_ts_ms_, elapsed_ms); 00254 } 00255 00257 bool GetHTTPCacheLatencyMs(int64* latency_ms) const; 00258 bool GetL2HTTPCacheLatencyMs(int64* latency_ms) const; 00259 00261 bool GetTimeToStartFetchMs(int64* elapsed_ms) const; 00262 00264 bool GetFetchHeaderLatencyMs(int64* latency_ms) const; 00265 00267 bool GetFetchLatencyMs(int64* latency_ms) const; 00268 00271 bool GetTimeToFirstByte(int64* latency_ms) const; 00272 00274 bool GetTimeToStartParseMs(int64* elapsed_ms) const { 00275 return GetTimeFromStart(parsing_start_ts_ms_, elapsed_ms); 00276 } 00277 00278 int64 init_ts_ms() const { return init_ts_ms_; } 00279 00280 int64 start_ts_ms() const { return start_ts_ms_; } 00281 00282 private: 00283 int64 NowMs() const; 00284 00286 void SetToNow(int64* ts_ms) const; 00287 00290 bool GetTimeFromStart(int64 ts_ms, int64* elapsed_ms) const; 00291 00292 00293 Timer* timer_; 00294 00300 int64 init_ts_ms_; 00301 int64 start_ts_ms_; 00302 int64 processing_start_ts_ms_; 00303 int64 pcache_lookup_start_ts_ms_; 00304 int64 pcache_lookup_end_ts_ms_; 00305 int64 parsing_start_ts_ms_; 00306 int64 end_ts_ms_; 00307 00308 AbstractMutex* mu_; 00309 00310 int64 fetch_start_ts_ms_; 00311 int64 fetch_header_ts_ms_; 00312 int64 fetch_end_ts_ms_; 00313 int64 first_byte_ts_ms_; 00314 00316 int64 http_cache_latency_ms_; 00317 int64 l2http_cache_latency_ms_; 00318 00319 DISALLOW_COPY_AND_ASSIGN(TimingInfo); 00320 }; 00321 00322 const TimingInfo& timing_info() const { return timing_info_; } 00323 TimingInfo* mutable_timing_info() { return &timing_info_; } 00324 00325 protected: 00329 RequestContext(AbstractMutex* mutex, Timer* timer, 00330 AbstractLogRecord* log_record); 00332 virtual ~RequestContext(); 00333 REFCOUNT_FRIEND_DECLARATION(RequestContext); 00334 00335 private: 00337 scoped_ptr<AbstractLogRecord> log_record_; 00338 00339 TimingInfo timing_info_; 00340 00342 scoped_ptr<RequestTrace> root_trace_context_; 00343 00345 scoped_ptr<AbstractLogRecord> background_rewrite_log_record_; 00346 00347 StringSet session_authorized_fetch_origins_; 00348 00349 bool using_spdy_; 00350 SplitRequestType split_request_type_;; 00351 int64 request_id_; 00352 00353 DISALLOW_COPY_AND_ASSIGN(RequestContext); 00354 }; 00355 00356 } 00357 00358 #endif ///< NET_INSTAWEB_HTTP_PUBLIC_REQUEST_CONTEXT_H_