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.
5 #ifndef CHROME_BROWSER_RLZ_RLZ_H_
6 #define CHROME_BROWSER_RLZ_RLZ_H_
8 #include "build/build_config.h"
10 #if defined(ENABLE_RLZ)
15 #include "base/basictypes.h"
16 #include "base/memory/singleton.h"
17 #include "base/strings/string16.h"
18 #include "base/threading/sequenced_worker_pool.h"
19 #include "base/time/time.h"
20 #include "content/public/browser/notification_observer.h"
21 #include "content/public/browser/notification_registrar.h"
22 #include "rlz/lib/rlz_lib.h"
26 class URLRequestContextGetter;
29 // RLZ is a library which is used to measure distribution scenarios.
30 // Its job is to record certain lifetime events in the registry and to send
31 // them encoded as a compact string at most twice. The sent data does
32 // not contain information that can be used to identify a user or to infer
33 // browsing habits. The API in this file is a wrapper around the open source
34 // RLZ library which can be found at http://code.google.com/p/rlz.
36 // For partner or bundled installs, the RLZ might send more information
37 // according to the terms disclosed in the EULA.
39 class RLZTracker : public content::NotificationObserver {
41 // Initializes the RLZ library services for use in chrome. Schedules a delayed
42 // task that performs the ping and registers some events when 'first-run' is
45 // When |send_ping_immediately| is true, a financial ping should be sent
46 // immediately after a first search is recorded, without waiting for |delay|.
47 // However, we only want this behaviour on first run.
49 // If the chrome brand is organic (no partners) then the pings don't occur.
50 static bool InitRlzFromProfileDelayed(Profile* profile,
52 bool send_ping_immediately,
53 base::TimeDelta delay);
55 // Records an RLZ event. Some events can be access point independent.
56 // Returns false it the event could not be recorded. Requires write access
57 // to the HKCU registry hive on windows.
58 static bool RecordProductEvent(rlz_lib::Product product,
59 rlz_lib::AccessPoint point,
60 rlz_lib::Event event_id);
62 // For the point parameter of RecordProductEvent.
63 static const rlz_lib::AccessPoint CHROME_OMNIBOX;
64 static const rlz_lib::AccessPoint CHROME_HOME_PAGE;
66 // Gets the HTTP header value that can be added to requests from the
67 // specific access point. The string returned is of the form:
69 // "X-Rlz-String: <access-point-rlz>\r\n"
71 static std::string GetAccessPointHttpHeader(rlz_lib::AccessPoint point);
73 // Gets the RLZ value of the access point.
74 // Returns false if the rlz string could not be obtained. In some cases
75 // an empty string can be returned which is not an error.
76 static bool GetAccessPointRlz(rlz_lib::AccessPoint point, string16* rlz);
78 // Invoked during shutdown to clean up any state created by RLZTracker.
79 static void CleanupRlz();
81 #if defined(OS_CHROMEOS)
82 // Clears all product state. Should be called when turning RLZ off. On other
83 // platforms, this is done by product uninstaller.
84 static void ClearRlzState();
87 // This method is public for use by the Singleton class.
88 static RLZTracker* GetInstance();
90 // Enables zero delay for InitRlzFromProfileDelayed. For testing only.
91 static void EnableZeroDelayForTesting();
93 // The following methods are made protected so that they can be used for
94 // testing purposes. Production code should never need to call these.
97 virtual ~RLZTracker();
99 // Called by InitRlzFromProfileDelayed with values taken from |profile|.
100 static bool InitRlzDelayed(bool first_run,
101 bool send_ping_immediately,
102 base::TimeDelta delay,
103 bool is_google_default_search,
104 bool is_google_homepage,
105 bool is_google_in_startpages);
107 // Performs initialization of RLZ tracker that is purposefully delayed so
108 // that it does not interfere with chrome startup time.
109 virtual void DelayedInit();
111 // content::NotificationObserver implementation:
112 virtual void Observe(int type,
113 const content::NotificationSource& source,
114 const content::NotificationDetails& details) OVERRIDE;
116 // Used by test code to override the default RLZTracker instance returned
118 void set_tracker(RLZTracker* tracker) {
122 // Sends the financial ping to the RLZ servers and invalidates the RLZ string
123 // cache since the response from the RLZ server may have changed then.
124 // Protected so that its accessible from tests.
128 friend struct DefaultSingletonTraits<RLZTracker>;
129 friend class base::RefCountedThreadSafe<RLZTracker>;
131 // Implementation called from InitRlzDelayed() static method.
132 bool Init(bool first_run,
133 bool send_ping_immediately,
134 base::TimeDelta delay,
135 bool google_default_search,
136 bool google_default_homepage,
137 bool is_google_in_startpages);
139 // Implementation called from RecordProductEvent() static method.
140 bool RecordProductEventImpl(rlz_lib::Product product,
141 rlz_lib::AccessPoint point,
142 rlz_lib::Event event_id);
144 // Records FIRST_SEARCH event. Called from Observe() on blocking task runner.
145 void RecordFirstSearch(rlz_lib::AccessPoint point);
147 // Implementation called from GetAccessPointRlz() static method.
148 bool GetAccessPointRlzImpl(rlz_lib::AccessPoint point, string16* rlz);
150 // Schedules the delayed initialization. This method is virtual to allow
151 // tests to override how the scheduling is done.
152 virtual void ScheduleDelayedInit(base::TimeDelta delay);
154 // Schedules a call to rlz_lib::RecordProductEvent(). This method is virtual
155 // to allow tests to override how the scheduling is done.
156 virtual bool ScheduleRecordProductEvent(rlz_lib::Product product,
157 rlz_lib::AccessPoint point,
158 rlz_lib::Event event_id);
160 // Schedules a call to rlz_lib::RecordFirstSearch(). This method is virtual
161 // to allow tests to override how the scheduling is done.
162 virtual bool ScheduleRecordFirstSearch(rlz_lib::AccessPoint point);
164 // Schedules a call to rlz_lib::SendFinancialPing(). This method is virtual
165 // to allow tests to override how the scheduling is done.
166 virtual void ScheduleFinancialPing();
168 // Schedules a call to GetAccessPointRlz() on the I/O thread if the current
169 // thread is not already the I/O thread, otherwise does nothing. Returns
170 // true if the call was scheduled, and false otherwise. This method is
171 // virtual to allow tests to override how the scheduling is done.
172 virtual bool ScheduleGetAccessPointRlz(rlz_lib::AccessPoint point);
174 // Sends the financial ping to the RLZ servers. This method is virtual to
175 // allow tests to override.
176 virtual bool SendFinancialPing(const std::string& brand,
177 const string16& lang,
178 const string16& referral);
180 #if defined(OS_CHROMEOS)
181 // Implementation called from ClearRlzState static method.
182 void ClearRlzStateImpl();
184 // Schedules a call to ClearRlzStateImpl(). This method is virtual
185 // to allow tests to override how the scheduling is done.
186 virtual bool ScheduleClearRlzState();
189 // Tracker used for testing purposes only. If this value is non-NULL, it
190 // will be returned from GetInstance() instead of the regular singleton.
191 static RLZTracker* tracker_;
193 // Configuation data for RLZ tracker. Set by call to Init().
195 bool send_ping_immediately_;
196 bool is_google_default_search_;
197 bool is_google_homepage_;
198 bool is_google_in_startpages_;
200 // Unique sequence token so that tasks posted by RLZTracker are executed
201 // sequentially in the blocking pool.
202 base::SequencedWorkerPool::SequenceToken worker_pool_token_;
204 // Keeps track if the RLZ tracker has already performed its delayed
208 // Keeps a cache of RLZ access point strings, since they rarely change.
209 // The cache must be protected by a lock since it may be accessed from
210 // the UI thread for reading and the IO thread for reading and/or writing.
211 base::Lock cache_lock_;
212 std::map<rlz_lib::AccessPoint, string16> rlz_cache_;
214 // Keeps track of whether the omnibox or host page have been used.
218 // Main and (optionally) reactivation brand codes, assigned on UI thread.
220 std::string reactivation_brand_;
222 content::NotificationRegistrar registrar_;
224 // Minimum delay before sending financial ping after initialization.
225 base::TimeDelta min_init_delay_;
227 DISALLOW_COPY_AND_ASSIGN(RLZTracker);
230 #endif // defined(ENABLE_RLZ)
232 #endif // CHROME_BROWSER_RLZ_RLZ_H_