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| 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #ifndef CHROME_BROWSER_PRERENDER_PRERENDER_LOCAL_PREDICTOR_H_ | |
| 6 #define CHROME_BROWSER_PRERENDER_PRERENDER_LOCAL_PREDICTOR_H_ | |
| 7 | |
| 8 #include <map> | |
| 9 #include <vector> | |
| 10 | |
| 11 #include "base/containers/hash_tables.h" | |
| 12 #include "base/memory/scoped_vector.h" | |
| 13 #include "base/memory/weak_ptr.h" | |
| 14 #include "base/scoped_observer.h" | |
| 15 #include "base/task/cancelable_task_tracker.h" | |
| 16 #include "base/timer/timer.h" | |
| 17 #include "components/history/core/browser/history_service_observer.h" | |
| 18 #include "components/history/core/browser/visit_database.h" | |
| 19 #include "net/url_request/url_fetcher_delegate.h" | |
| 20 #include "url/gurl.h" | |
| 21 | |
| 22 namespace base { | |
| 23 class DictionaryValue; | |
| 24 } | |
| 25 | |
| 26 namespace content { | |
| 27 class WebContents; | |
| 28 } | |
| 29 | |
| 30 namespace gfx { | |
| 31 class Size; | |
| 32 } | |
| 33 | |
| 34 namespace history { | |
| 35 class HistoryService; | |
| 36 } | |
| 37 | |
| 38 namespace prerender { | |
| 39 | |
| 40 class PrerenderHandle; | |
| 41 class PrerenderManager; | |
| 42 | |
| 43 // PrerenderLocalPredictor maintains local browsing history to make prerender | |
| 44 // predictions. | |
| 45 // At this point, the class is not actually creating prerenders, but just | |
| 46 // recording timing stats about the effect prerendering would have. | |
| 47 // | |
| 48 // TODO(davidben): Prune this class down to only what it's still being used for. | |
| 49 class PrerenderLocalPredictor : public history::HistoryServiceObserver, | |
| 50 public net::URLFetcherDelegate { | |
| 51 public: | |
| 52 struct LocalPredictorURLInfo; | |
| 53 struct CandidatePrerenderInfo; | |
| 54 // A class simulating a set of URLs prefetched, for statistical purposes. | |
| 55 class PrefetchList; | |
| 56 enum Event { | |
| 57 EVENT_CONSTRUCTED = 0, | |
| 58 EVENT_INIT_SCHEDULED = 1, | |
| 59 EVENT_INIT_STARTED = 2, | |
| 60 EVENT_INIT_FAILED_NO_HISTORY = 3, | |
| 61 EVENT_INIT_SUCCEEDED = 4, | |
| 62 EVENT_ADD_VISIT = 5, | |
| 63 EVENT_ADD_VISIT_INITIALIZED = 6, | |
| 64 EVENT_ADD_VISIT_PRERENDER_IDENTIFIED = 7, | |
| 65 EVENT_ADD_VISIT_RELEVANT_TRANSITION = 8, | |
| 66 EVENT_ADD_VISIT_IDENTIFIED_PRERENDER_CANDIDATE = 9, | |
| 67 EVENT_ADD_VISIT_PRERENDERING = 10, | |
| 68 // Obsolete: EVENT_GOT_PRERENDER_URL = 11, | |
| 69 EVENT_ERROR_NO_PRERENDER_URL_FOR_PLT = 12, | |
| 70 EVENT_ADD_VISIT_PRERENDERING_EXTENDED = 13, | |
| 71 EVENT_PRERENDER_URL_LOOKUP_RESULT = 14, | |
| 72 EVENT_PRERENDER_URL_LOOKUP_RESULT_ROOT_PAGE = 15, | |
| 73 EVENT_PRERENDER_URL_LOOKUP_RESULT_IS_HTTP = 16, | |
| 74 EVENT_PRERENDER_URL_LOOKUP_RESULT_HAS_QUERY_STRING = 17, | |
| 75 EVENT_PRERENDER_URL_LOOKUP_RESULT_CONTAINS_LOGOUT = 18, | |
| 76 EVENT_PRERENDER_URL_LOOKUP_RESULT_CONTAINS_LOGIN = 19, | |
| 77 EVENT_START_URL_LOOKUP = 20, | |
| 78 // Obsolete: EVENT_ADD_VISIT_NOT_ROOTPAGE = 21, | |
| 79 EVENT_URL_WHITELIST_ERROR = 22, | |
| 80 EVENT_URL_WHITELIST_OK = 23, | |
| 81 EVENT_PRERENDER_URL_LOOKUP_RESULT_ON_WHITELIST = 24, | |
| 82 EVENT_PRERENDER_URL_LOOKUP_RESULT_ON_WHITELIST_ROOT_PAGE = 25, | |
| 83 EVENT_PRERENDER_URL_LOOKUP_RESULT_EXTENDED_ROOT_PAGE = 26, | |
| 84 EVENT_PRERENDER_URL_LOOKUP_RESULT_ROOT_PAGE_HTTP = 27, | |
| 85 EVENT_PRERENDER_URL_LOOKUP_FAILED = 28, | |
| 86 EVENT_PRERENDER_URL_LOOKUP_NO_SOURCE_WEBCONTENTS_FOUND = 29, | |
| 87 EVENT_PRERENDER_URL_LOOKUP_NO_LOGGED_IN_TABLE_FOUND = 30, | |
| 88 EVENT_PRERENDER_URL_LOOKUP_ISSUING_LOGGED_IN_LOOKUP = 31, | |
| 89 EVENT_CONTINUE_PRERENDER_CHECK_STARTED = 32, | |
| 90 EVENT_CONTINUE_PRERENDER_CHECK_NO_URL = 33, | |
| 91 EVENT_CONTINUE_PRERENDER_CHECK_PRIORITY_TOO_LOW = 34, | |
| 92 EVENT_CONTINUE_PRERENDER_CHECK_URLS_IDENTICAL_BUT_FRAGMENT = 35, | |
| 93 EVENT_CONTINUE_PRERENDER_CHECK_HTTPS = 36, | |
| 94 EVENT_CONTINUE_PRERENDER_CHECK_ROOT_PAGE = 37, | |
| 95 EVENT_CONTINUE_PRERENDER_CHECK_LOGOUT_URL = 38, | |
| 96 EVENT_CONTINUE_PRERENDER_CHECK_LOGIN_URL = 39, | |
| 97 EVENT_CONTINUE_PRERENDER_CHECK_NOT_LOGGED_IN = 40, | |
| 98 EVENT_CONTINUE_PRERENDER_CHECK_FALLTHROUGH_NOT_PRERENDERING = 41, | |
| 99 EVENT_CONTINUE_PRERENDER_CHECK_ISSUING_PRERENDER = 42, | |
| 100 EVENT_ISSUING_PRERENDER = 43, | |
| 101 EVENT_NO_PRERENDER_CANDIDATES = 44, | |
| 102 EVENT_GOT_HISTORY_ISSUING_LOOKUP = 45, | |
| 103 EVENT_TAB_HELPER_URL_SEEN = 46, | |
| 104 EVENT_TAB_HELPER_URL_SEEN_MATCH = 47, | |
| 105 EVENT_TAB_HELPER_URL_SEEN_NAMESPACE_MATCH = 48, | |
| 106 EVENT_PRERENDER_URL_LOOKUP_MULTIPLE_SOURCE_WEBCONTENTS_FOUND = 49, | |
| 107 EVENT_CONTINUE_PRERENDER_CHECK_ON_SIDE_EFFECT_FREE_WHITELIST = 50, | |
| 108 EVENT_CONTINUE_PRERENDER_CHECK_EXAMINE_NEXT_URL = 51, | |
| 109 EVENT_ISSUE_PRERENDER_ALREADY_PRERENDERING = 52, | |
| 110 EVENT_ISSUE_PRERENDER_NEW_PRERENDER = 53, | |
| 111 EVENT_ISSUE_PRERENDER_CANCELLED_OLD_PRERENDER = 54, | |
| 112 EVENT_CONTINUE_PRERENDER_CHECK_FALLTHROUGH_PRERENDERING = 55, | |
| 113 EVENT_PRERENDER_URL_LOOKUP_SUCCESS = 56, | |
| 114 EVENT_PRERENDER_SERVICE_DISABLED = 57, | |
| 115 EVENT_PRERENDER_SERVICE_ISSUED_LOOKUP = 58, | |
| 116 EVENT_PRERENDER_SERVICE_LOOKUP_TIMED_OUT = 59, | |
| 117 EVENT_PRERENDER_SERVICE_RECEIVED_RESULT = 60, | |
| 118 EVENT_PRERENDER_SERVICE_NO_RECORD_FOR_RESULT = 61, | |
| 119 EVENT_PRERENDER_SERVICE_PARSED_CORRECTLY = 62, | |
| 120 EVENT_PRERENDER_SERVICE_PARSE_ERROR = 63, | |
| 121 EVENT_PRERENDER_SERVICE_PARSE_ERROR_INCORRECT_JSON = 64, | |
| 122 EVENT_PRERENDER_SERVICE_HINTING_TIMED_OUT = 65, | |
| 123 EVENT_PRERENDER_SERVICE_HINTING_URL_LOOKUP_TIMED_OUT = 66, | |
| 124 EVENT_PRERENDER_SERVICE_CANDIDATE_URL_LOOKUP_TIMED_OUT = 67, | |
| 125 EVENT_CONTINUE_PRERENDER_CHECK_ON_SERVICE_WHITELIST = 68, | |
| 126 EVENT_CONTINUE_PRERENDER_CHECK_EXAMINE_NEXT_URL_LOCAL = 69, | |
| 127 EVENT_CONTINUE_PRERENDER_CHECK_EXAMINE_NEXT_URL_SERVICE = 70, | |
| 128 EVENT_ADD_VISIT_RELEVANT_TRANSITION_REPEAT_URL = 71, | |
| 129 EVENT_ADD_VISIT_RELEVANT_TRANSITION_NEW_URL = 72, | |
| 130 // Obsolete: EVENT_TAB_HELPER_URL_SEEN_NAMESPACE_MISMATCH_NO_NAMESPACE = 73, | |
| 131 // Obsolete: EVENT_TAB_HELPER_URL_SEEN_NAMESPACE_MISMATCH_MERGE_ISSUED = 74, | |
| 132 // Obsolete: EVENT_NAMESPACE_MISMATCH_MERGE_RESULT_RECEIVED = 75, | |
| 133 // Obsolete: EVENT_NAMESPACE_MISMATCH_MERGE_RESULT_NAMESPACE_NOT_FOUND = 76, | |
| 134 // Obsolete: EVENT_NAMESPACE_MISMATCH_MERGE_RESULT_NOT_LOGGING = 77, | |
| 135 // Obsolete: EVENT_NAMESPACE_MISMATCH_MERGE_RESULT_NO_TRANSACTIONS = 78, | |
| 136 // Obsolete: EVENT_NAMESPACE_MISMATCH_MERGE_RESULT_TOO_MANY_TRANSACTIONS = 7
9, | |
| 137 // Obsolete: EVENT_NAMESPACE_MISMATCH_MERGE_RESULT_NOT_MERGEABLE = 80, | |
| 138 // Obsolete: EVENT_NAMESPACE_MISMATCH_MERGE_RESULT_MERGEABLE = 81, | |
| 139 EVENT_INIT_FAILED_UNENCRYPTED_SYNC_NOT_ENABLED = 82, | |
| 140 EVENT_CONTINUE_PRERENDER_CHECK_EXAMINE_NEXT_URL_NOT_SKIPPED = 83, | |
| 141 EVENT_PRERENDER_SERVICE_RETURNED_HINTING_CANDIDATES = 84, | |
| 142 // Obsolete: EVENT_NAMESPACE_MISMATCH_MERGE_RESULT_NAMESPACE_NOT_ALIAS = 85, | |
| 143 EVENT_TAB_HELPER_URL_SEEN_MATCH_ENTRY = 86, | |
| 144 EVENT_TAB_HELPER_URL_SEEN_MATCH_BROWSER_NAVIGATE = 87, | |
| 145 EVENT_TAB_HELPER_URL_SEEN_NAMESPACE_MATCH_ENTRY = 88, | |
| 146 EVENT_TAB_HELPER_URL_SEEN_NAMESPACE_MATCH_BROWSER_NAVIGATE = 89, | |
| 147 EVENT_PREFETCH_LIST_ADDED = 90, | |
| 148 EVENT_PREFETCH_LIST_SEEN_TABCONTENTS = 91, | |
| 149 EVENT_PREFETCH_LIST_SEEN_HISTORY = 92, | |
| 150 EVENT_ISSUE_PRERENDER_CALLED = 93, | |
| 151 EVENT_ISSUE_PRERENDER_PREFETCH_ENABLED = 94, | |
| 152 EVENT_ISSUE_PRERENDER_PREFETCH_ISSUED = 95, | |
| 153 EVENT_MAX_VALUE | |
| 154 }; | |
| 155 | |
| 156 // A PrerenderLocalPredictor is owned by the PrerenderManager specified | |
| 157 // in the constructor. It will be destoryed at the time its owning | |
| 158 // PrerenderManager is destroyed. | |
| 159 explicit PrerenderLocalPredictor(PrerenderManager* prerender_manager); | |
| 160 ~PrerenderLocalPredictor() override; | |
| 161 | |
| 162 void Shutdown(); | |
| 163 | |
| 164 // history::HistoryServiceObserver: | |
| 165 void OnAddVisit(history::HistoryService* history_service, | |
| 166 const history::BriefVisitInfo& info) override; | |
| 167 | |
| 168 void OnGetInitialVisitHistory( | |
| 169 scoped_ptr<std::vector<history::BriefVisitInfo> > visit_history); | |
| 170 | |
| 171 void OnPLTEventForURL(const GURL& url, base::TimeDelta page_load_time); | |
| 172 | |
| 173 void OnTabHelperURLSeen(const GURL& url, content::WebContents* web_contents); | |
| 174 | |
| 175 // net::URLFetcherDelegate implementation: | |
| 176 void OnURLFetchComplete(const net::URLFetcher* source) override; | |
| 177 | |
| 178 private: | |
| 179 struct PrerenderProperties; | |
| 180 history::HistoryService* GetHistoryIfExists() const; | |
| 181 void Init(); | |
| 182 bool IsPrerenderStillValid(PrerenderProperties* prerender) const; | |
| 183 bool DoesPrerenderMatchPLTRecord(PrerenderProperties* prerender, | |
| 184 const GURL& url, | |
| 185 base::TimeDelta plt) const; | |
| 186 void RecordEvent(Event event) const; | |
| 187 | |
| 188 void OnLookupURL(scoped_ptr<CandidatePrerenderInfo> info); | |
| 189 | |
| 190 // Lookup the prerender candidate in the Prerender Service (if applicable). | |
| 191 void DoPrerenderServiceCheck(scoped_ptr<CandidatePrerenderInfo> info); | |
| 192 | |
| 193 // Lookup the prerender candidate in the LoggedIn Predictor. | |
| 194 void DoLoggedInLookup(scoped_ptr<CandidatePrerenderInfo> info); | |
| 195 | |
| 196 // Returns an element of issued_prerenders_, which should be replaced | |
| 197 // by a new prerender of the priority indicated, or NULL, if the priority | |
| 198 // is too low (or if the URL requested is already prerendering). | |
| 199 PrerenderProperties* GetIssuedPrerenderSlotForPriority(const GURL& url, | |
| 200 double priority); | |
| 201 | |
| 202 void ContinuePrerenderCheck(scoped_ptr<CandidatePrerenderInfo> info); | |
| 203 void LogCandidateURLStats(const GURL& url) const; | |
| 204 void IssuePrerender(CandidatePrerenderInfo* info, | |
| 205 LocalPredictorURLInfo* url_info); | |
| 206 void MaybeCancelURLFetcher(net::URLFetcher* fetcher); | |
| 207 // Returns true if the parsed response is semantically correct and could | |
| 208 // be fully applied. | |
| 209 bool ApplyParsedPrerenderServiceResponse( | |
| 210 base::DictionaryValue* dict, | |
| 211 CandidatePrerenderInfo* info, | |
| 212 bool* hinting_timed_out, | |
| 213 bool* hinting_url_lookup_timed_out, | |
| 214 bool* candidate_url_lookup_timed_out); | |
| 215 typedef std::map<net::URLFetcher*, CandidatePrerenderInfo*> | |
| 216 OutstandingFetchers; | |
| 217 OutstandingFetchers outstanding_prerender_service_requests_; | |
| 218 PrerenderManager* prerender_manager_; | |
| 219 base::OneShotTimer<PrerenderLocalPredictor> timer_; | |
| 220 | |
| 221 // Delay after which to initialize, to avoid putting to much load on the | |
| 222 // database thread early on when Chrome is starting up. | |
| 223 static const int kInitDelayMs = 5 * 1000; | |
| 224 | |
| 225 base::CancelableTaskTracker history_db_tracker_; | |
| 226 | |
| 227 scoped_ptr<std::vector<history::BriefVisitInfo> > visit_history_; | |
| 228 | |
| 229 scoped_ptr<PrerenderProperties> current_prerender_; | |
| 230 scoped_ptr<PrerenderProperties> last_swapped_in_prerender_; | |
| 231 | |
| 232 ScopedVector<PrerenderProperties> issued_prerenders_; | |
| 233 | |
| 234 base::hash_set<int64> url_whitelist_; | |
| 235 | |
| 236 scoped_ptr<PrefetchList> prefetch_list_; | |
| 237 | |
| 238 ScopedObserver<history::HistoryService, history::HistoryServiceObserver> | |
| 239 history_service_observer_; | |
| 240 | |
| 241 base::WeakPtrFactory<PrerenderLocalPredictor> weak_factory_; | |
| 242 | |
| 243 DISALLOW_COPY_AND_ASSIGN(PrerenderLocalPredictor); | |
| 244 }; | |
| 245 | |
| 246 } // namespace prerender | |
| 247 | |
| 248 #endif // CHROME_BROWSER_PRERENDER_PRERENDER_LOCAL_PREDICTOR_H_ | |
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Chromium Code Reviews
Issue 1077433002:
Remove PrerenderLocalPredictor, part 1. (Closed)
Base URL: https://chromium.googlesource.com/chromium/src.git@master