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
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
|
// Copyright 2022 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CHROME_BROWSER_ASH_APP_MODE_METRICS_PERIODIC_METRICS_SERVICE_H_
#define CHROME_BROWSER_ASH_APP_MODE_METRICS_PERIODIC_METRICS_SERVICE_H_
#include "base/memory/raw_ptr.h"
#include "base/timer/timer.h"
#include "components/prefs/pref_service.h"
namespace ash {
extern const char kKioskRamUsagePercentageHistogram[];
extern const char kKioskSwapUsagePercentageHistogram[];
extern const char kKioskDiskUsagePercentageHistogram[];
extern const char kKioskChromeProcessCountHistogram[];
extern const char kKioskSessionRestartInternetAccessHistogram[];
extern const char kKioskSessionRestartUserActivityHistogram[];
extern const char kKioskInternetAccessInfo[];
extern const char kKioskUserActivity[];
extern const base::TimeDelta kPeriodicMetricsInterval;
extern const base::TimeDelta kFirstIdleTimeout;
extern const base::TimeDelta kRegularIdleTimeout;
// These values are used in UMA metrics. Entries should not be renumbered and
// numeric values should never be reused. Keep in sync with respective enum in
// tools/metrics/histograms/enums.xml
enum class KioskInternetAccessInfo {
kOnlineAndAppRequiresInternet = 0,
kOnlineAndAppSupportsOffline = 1,
kOfflineAndAppRequiresInternet = 2,
kOfflineAndAppSupportsOffline = 3,
kMaxValue = kOfflineAndAppSupportsOffline,
};
// These values are used in UMA metrics. Entries should not be renumbered and
// numeric values should never be reused. Keep in sync with respective enum in
// tools/metrics/histograms/enums.xml
enum class KioskUserActivity {
kActive = 0,
kIdle = 1,
kMaxValue = kIdle,
};
class DiskSpaceCalculator;
// This class save and record kiosk UMA metrics every
// `kPeriodicMetricsInterval`.
class PeriodicMetricsService {
public:
explicit PeriodicMetricsService(PrefService* prefs);
PeriodicMetricsService(const PeriodicMetricsService&) = delete;
PeriodicMetricsService& operator=(const PeriodicMetricsService&) = delete;
~PeriodicMetricsService();
// Record metrics about the previous kiosk session. Should be called in the
// beginning of the kiosk session and before `StartRecordingPeriodicMetrics`.
void RecordPreviousSessionMetrics() const;
void StartRecordingPeriodicMetrics(bool is_offline_enabled);
private:
void RecordPeriodicMetrics(const base::TimeDelta& idle_timeout);
void RecordRamUsage() const;
void RecordSwapUsage() const;
void RecordDiskSpaceUsage() const;
void RecordChromeProcessCount() const;
void RecordPreviousInternetAccessInfo() const;
void RecordPreviousUserActivity() const;
// Save the Internet access info to record
// `kKioskSessionRestartInternetAccessHistogram` during the next kiosk session
// start.
void SaveInternetAccessInfo() const;
// Save the user activity info to record
// `kKioskSessionRestartUserActivityHistogram` during the next kiosk session
// start. The first idle timeout is `kFirstIdleTimeout`, but then when
// ChromeOS records user activity, it uses `kRegularIdleTimeout`.
void SaveUserActivity(const base::TimeDelta& idle_timeout) const;
// Invokes callback to record continuously monitored metrics. Starts when
// the kiosk session is started.
base::RepeatingTimer metrics_timer_;
bool is_offline_enabled_ = true;
raw_ptr<PrefService> prefs_;
const std::unique_ptr<DiskSpaceCalculator> disk_space_calculator_;
base::WeakPtrFactory<PeriodicMetricsService> weak_ptr_factory_{this};
};
} // namespace ash
#endif // CHROME_BROWSER_ASH_APP_MODE_METRICS_PERIODIC_METRICS_SERVICE_H_
|
