1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
|
// Copyright 2013 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef COMPONENTS_SYNC_BASE_EXTENSIONS_ACTIVITY_H_
#define COMPONENTS_SYNC_BASE_EXTENSIONS_ACTIVITY_H_
#include <stdint.h>
#include <map>
#include <string>
#include "base/memory/ref_counted.h"
#include "base/synchronization/lock.h"
namespace syncer {
// A storage to record usage of extensions APIs to send to sync
// servers, with the ability to purge data once sync servers have
// acknowledged it (successful commit response).
class ExtensionsActivity
: public base::RefCountedThreadSafe<ExtensionsActivity> {
public:
// A data record of activity performed by extension `extension_id`.
struct Record {
// The human-readable ID identifying the extension responsible
// for the activity reported in this Record.
std::string extension_id;
// How many times the extension successfully invoked a write
// operation through the bookmarks API since the last CommitMessage.
uint32_t bookmark_write_count = 0U;
};
using Records = std::map<std::string, Record>;
ExtensionsActivity();
// Fill `buffer` with all current records and then clear the
// internal records. Called on sync thread to append records to sync commit
// message.
void GetAndClearRecords(Records* buffer);
// Merge `records` with the current set of records. Called on sync thread to
// put back records if sync commit failed.
void PutRecords(const Records& records);
// Increment write count of the specified extension.
void UpdateRecord(const std::string& extension_id);
private:
friend class base::RefCountedThreadSafe<ExtensionsActivity>;
~ExtensionsActivity();
Records records_;
mutable base::Lock records_lock_;
};
} // namespace syncer
#endif // COMPONENTS_SYNC_BASE_EXTENSIONS_ACTIVITY_H_
|
