blob: a1d4fbb26943b1f4e84263f0308b4f3dbd357cb1 (
plain)
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
|
// Copyright 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CHROME_BROWSER_APPS_EPHEMERAL_APP_SERVICE_H_
#define CHROME_BROWSER_APPS_EPHEMERAL_APP_SERVICE_H_
#include <map>
#include <set>
#include "base/timer/timer.h"
#include "components/keyed_service/core/keyed_service.h"
#include "content/public/browser/notification_observer.h"
#include "content/public/browser/notification_registrar.h"
class Profile;
namespace extensions {
class Extension;
} // namespace extensions
// Performs the background garbage collection of ephemeral apps.
class EphemeralAppService : public KeyedService,
public content::NotificationObserver {
public:
// Returns the instance for the given profile. This is a convenience wrapper
// around EphemeralAppServiceFactory::GetForProfile.
static EphemeralAppService* Get(Profile* profile);
explicit EphemeralAppService(Profile* profile);
virtual ~EphemeralAppService();
// Constants exposed for testing purposes:
// The number of days of inactivity before an ephemeral app will be removed.
static const int kAppInactiveThreshold;
// If the ephemeral app has been launched within this number of days, it will
// definitely not be garbage collected.
static const int kAppKeepThreshold;
// The maximum number of ephemeral apps to keep cached. Excess may be removed.
static const int kMaxEphemeralAppsCount;
// The number of days of inactivity before the data of an already evicted
// ephemeral app will be removed.
static const int kDataInactiveThreshold;
private:
// A map used to order the ephemeral apps by their last launch time.
typedef std::multimap<base::Time, std::string> LaunchTimeAppMap;
// content::NotificationObserver implementation.
virtual void Observe(int type,
const content::NotificationSource& source,
const content::NotificationDetails& details) OVERRIDE;
void Init();
void InitEphemeralAppCount();
// Garbage collect ephemeral apps.
void TriggerGarbageCollect(const base::TimeDelta& delay);
void GarbageCollectApps();
static void GetAppsToRemove(int app_count,
const LaunchTimeAppMap& app_launch_times,
std::set<std::string>* remove_app_ids);
// Garbage collect the data of ephemeral apps that have been evicted and
// inactive for a long period of time.
void GarbageCollectData();
Profile* profile_;
content::NotificationRegistrar registrar_;
base::OneShotTimer<EphemeralAppService> garbage_collect_apps_timer_;
base::OneShotTimer<EphemeralAppService> garbage_collect_data_timer_;
// The count of cached ephemeral apps.
int ephemeral_app_count_;
friend class EphemeralAppBrowserTest;
friend class EphemeralAppServiceTest;
friend class EphemeralAppServiceBrowserTest;
DISALLOW_COPY_AND_ASSIGN(EphemeralAppService);
};
#endif // CHROME_BROWSER_APPS_EPHEMERAL_APP_SERVICE_H_
|
