Page Speed Optimization Libraries  1.3.25.1
net/instaweb/automatic/public/blink_flow_critical_line.h
Go to the documentation of this file.
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_AUTOMATIC_PUBLIC_BLINK_FLOW_CRITICAL_LINE_H_
00020 #define NET_INSTAWEB_AUTOMATIC_PUBLIC_BLINK_FLOW_CRITICAL_LINE_H_
00021 
00022 #include "net/instaweb/util/public/basictypes.h"
00023 #include "net/instaweb/util/public/google_url.h"
00024 #include "net/instaweb/util/public/scoped_ptr.h"
00025 #include "net/instaweb/util/public/string.h"
00026 #include "net/instaweb/util/public/string_util.h"
00027 
00028 namespace net_instaweb {
00029 
00030 class AsyncFetch;
00031 class BlinkCriticalLineData;
00032 class BlinkCriticalLineDataFinder;
00033 class LogRecord;
00034 class PropertyPage;
00035 class ProxyFetchPropertyCallbackCollector;
00036 class ProxyFetchFactory;
00037 class ServerContext;
00038 class RewriteOptions;
00039 class Statistics;
00040 class TimedVariable;
00041 
00045 class BlinkFlowCriticalLine {
00046  public:
00049   static const char kBackgroundComputationDone[];
00050   static const char kUpdateResponseCodeDone[];
00051 
00052   static void Start(const GoogleString& url,
00053                     AsyncFetch* base_fetch,
00054                     RewriteOptions* options,
00055                     ProxyFetchFactory* factory,
00056                     ServerContext* manager,
00057                     ProxyFetchPropertyCallbackCollector* property_callback);
00058 
00059   virtual ~BlinkFlowCriticalLine();
00060 
00061   static void InitStats(Statistics* statistics);
00062 
00063   static const char kNumBlinkHtmlCacheHits[];
00064   static const char kNumBlinkHtmlCacheMisses[];
00065   static const char kNumBlinkSharedFetchesStarted[];
00066   static const char kNumBlinkSharedFetchesCompleted[];
00067   static const char kNumComputeBlinkCriticalLineDataCalls[];
00068   static const char kNumBlinkHtmlMatches[];
00069   static const char kNumBlinkHtmlMismatches[];
00070   static const char kNumBlinkHtmlMismatchesCacheDeletes[];
00071   static const char kNumBlinkHtmlSmartdiffMatches[];
00072   static const char kNumBlinkHtmlSmartdiffMismatches[];
00073 
00074  private:
00075   BlinkFlowCriticalLine(const GoogleString& url,
00076                         AsyncFetch* base_fetch,
00077                         RewriteOptions* options,
00078                         ProxyFetchFactory* factory,
00079                         ServerContext* manager,
00080                         ProxyFetchPropertyCallbackCollector* property_callback);
00081 
00083   void SetStartRequestTimings();
00084 
00086   void SetResponseStartTime();
00087 
00091   void BlinkCriticalLineDataLookupDone(
00092       ProxyFetchPropertyCallbackCollector* collector);
00093 
00096   void BlinkCriticalLineDataHit();
00097 
00100   void BlinkCriticalLineDataMiss();
00101 
00106   void TriggerProxyFetch(bool critical_line_data_found,
00107                          bool serve_non_critical);
00108 
00109   void WriteResponseStartAndLookUpTimings();
00110 
00114   void ServeAllPanelContents();
00115 
00119   void ServeCriticalPanelContents();
00120 
00122   void SendCriticalHtml(const GoogleString& critical_json_str);
00123 
00125   void SendInlineImagesJson(const GoogleString& pushed_images_str);
00126 
00128   void SendNonCriticalJson(GoogleString* non_critical_json_str);
00129 
00131   void SendLazyloadImagesJs();
00132 
00133   void WriteString(const StringPiece& str);
00134 
00135   int64 GetTimeElapsedFromStartRequest();
00136 
00137   GoogleString GetAddTimingScriptString(const GoogleString& timing_str,
00138                                         int64 time_ms);
00139 
00140   void Flush();
00141 
00144   void SetFilterOptions(RewriteOptions* options) const;
00145 
00147   bool IsLastResponseCodeInvalid(PropertyPage* page);
00148 
00151   LogRecord* log_record();
00152 
00153   GoogleString url_;
00154   GoogleUrl google_url_;
00155   GoogleString critical_html_;
00156   AsyncFetch* base_fetch_;
00157   RewriteOptions* options_;
00158   ProxyFetchFactory* factory_;
00159   ServerContext* manager_;
00160   ProxyFetchPropertyCallbackCollector* property_callback_;
00161   scoped_ptr<BlinkCriticalLineData> blink_critical_line_data_;
00162   BlinkCriticalLineDataFinder* finder_;
00163   int64 request_start_time_ms_;
00164   int64 time_to_start_blink_flow_critical_line_ms_;
00165   int64 time_to_critical_line_data_look_up_done_ms_;
00166 
00167   TimedVariable* num_blink_html_cache_hits_;
00168   TimedVariable* num_blink_shared_fetches_started_;
00169 
00170   DISALLOW_COPY_AND_ASSIGN(BlinkFlowCriticalLine);
00171 };
00172 
00173 }  
00174 
00175 #endif  ///< NET_INSTAWEB_AUTOMATIC_PUBLIC_BLINK_FLOW_CRITICAL_LINE_H_
 All Classes Namespaces Files Functions Variables Typedefs Enumerations Enumerator Friends Defines