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1 // Copyright 2013 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 SYNC_UTIL_EXTENSIONS_ACTIVITY_H_ | |
6 #define SYNC_UTIL_EXTENSIONS_ACTIVITY_H_ | |
7 | |
8 #include <stdint.h> | |
9 | |
10 #include <map> | |
11 #include <string> | |
12 | |
13 #include "base/memory/ref_counted.h" | |
14 #include "base/synchronization/lock.h" | |
15 #include "sync/base/sync_export.h" | |
16 | |
17 namespace syncer { | |
18 | |
19 // A storage to record usage of extensions APIs to send to sync | |
20 // servers, with the ability to purge data once sync servers have | |
21 // acknowledged it (successful commit response). | |
22 class SYNC_EXPORT ExtensionsActivity | |
23 : public base::RefCountedThreadSafe<ExtensionsActivity> { | |
24 public: | |
25 // A data record of activity performed by extension |extension_id|. | |
26 struct SYNC_EXPORT Record { | |
27 Record(); | |
28 ~Record(); | |
29 | |
30 // The human-readable ID identifying the extension responsible | |
31 // for the activity reported in this Record. | |
32 std::string extension_id; | |
33 | |
34 // How many times the extension successfully invoked a write | |
35 // operation through the bookmarks API since the last CommitMessage. | |
36 uint32_t bookmark_write_count; | |
37 }; | |
38 | |
39 typedef std::map<std::string, Record> Records; | |
40 | |
41 ExtensionsActivity(); | |
42 | |
43 // Fill |buffer| with all current records and then clear the | |
44 // internal records. Called on sync thread to append records to sync commit | |
45 // message. | |
46 void GetAndClearRecords(Records* buffer); | |
47 | |
48 // Merge |records| with the current set of records. Called on sync thread to | |
49 // put back records if sync commit failed. | |
50 void PutRecords(const Records& records); | |
51 | |
52 // Increment write count of the specified extension. | |
53 void UpdateRecord(const std::string& extension_id); | |
54 | |
55 private: | |
56 friend class base::RefCountedThreadSafe<ExtensionsActivity>; | |
57 ~ExtensionsActivity(); | |
58 | |
59 Records records_; | |
60 mutable base::Lock records_lock_; | |
61 }; | |
62 | |
63 } // namespace syncer | |
64 | |
65 #endif // SYNC_UTIL_EXTENSIONS_ACTIVITY_H_ | |
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