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
105
106
107
108
109
110
111
|
// Copyright 2015 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 COMPONENTS_COMPONENT_UPDATER_COMPONENT_UPDATER_SERVICE_INTERNAL_H_
#define COMPONENTS_COMPONENT_UPDATER_COMPONENT_UPDATER_SERVICE_INTERNAL_H_
#include <map>
#include <string>
#include <vector>
#include "base/memory/ref_counted.h"
#include "base/memory/scoped_ptr.h"
#include "base/sequenced_task_runner.h"
#include "base/single_thread_task_runner.h"
#include "base/threading/thread_checker.h"
#include "components/component_updater/timer.h"
namespace component_updater {
class OnDemandUpdater;
using CrxInstaller = update_client::CrxInstaller;
using UpdateClient = update_client::UpdateClient;
class CrxUpdateService : public ComponentUpdateService,
public ComponentUpdateService::Observer,
public OnDemandUpdater {
using Observer = ComponentUpdateService::Observer;
public:
CrxUpdateService(const scoped_refptr<Configurator>& config,
const scoped_refptr<UpdateClient>& update_client);
~CrxUpdateService() override;
// Overrides for ComponentUpdateService.
void AddObserver(Observer* observer) override;
void RemoveObserver(Observer* observer) override;
bool RegisterComponent(const CrxComponent& component) override;
bool UnregisterComponent(const std::string& id) override;
std::vector<std::string> GetComponentIDs() const override;
OnDemandUpdater& GetOnDemandUpdater() override;
void MaybeThrottle(const std::string& id,
const base::Closure& callback) override;
scoped_refptr<base::SequencedTaskRunner> GetSequencedTaskRunner() override;
bool OnDemandUpdate(const std::string& id) override;
bool GetComponentDetails(const std::string& id,
CrxUpdateItem* item) const override;
// Overrides for Observer.
void OnEvent(Events event, const std::string& id) override;
private:
void Start();
void Stop();
bool CheckForUpdates();
bool OnDemandUpdateInternal(const std::string& id);
bool OnDemandUpdateWithCooldown(const std::string& id);
bool DoUnregisterComponent(const CrxComponent& component);
const CrxComponent* GetComponent(const std::string& id) const;
const CrxUpdateItem* GetComponentState(const std::string& id) const;
void OnUpdate(const std::vector<std::string>& ids,
std::vector<CrxComponent>* components);
void OnUpdateComplete(int error);
base::ThreadChecker thread_checker_;
scoped_refptr<Configurator> config_;
scoped_refptr<UpdateClient> update_client_;
Timer timer_;
// A collection of every registered component.
using Components = std::map<std::string, CrxComponent>;
Components components_;
// Maintains the order in which components have been registered. The position
// of a component id in this sequence indicates the priority of the component.
// The sooner the component gets registered, the higher its priority, and
// the closer this component is to the beginning of the vector.
std::vector<std::string> components_order_;
// Contains the components pending unregistration. If a component is not
// busy installing or updating, it can be unregistered right away. Otherwise,
// the component will be lazily unregistered after the its operations have
// completed.
std::vector<std::string> components_pending_unregistration_;
// Contains the active resource throttles associated with a given component.
using ResourceThrottleCallbacks = std::multimap<std::string, base::Closure>;
ResourceThrottleCallbacks ready_callbacks_;
// Contains the state of the component.
using ComponentStates = std::map<std::string, CrxUpdateItem>;
ComponentStates component_states_;
scoped_refptr<base::SequencedTaskRunner> blocking_task_runner_;
DISALLOW_COPY_AND_ASSIGN(CrxUpdateService);
};
} // namespace component_updater
#endif // COMPONENTS_COMPONENT_UPDATER_COMPONENT_UPDATER_SERVICE_INTERNAL_H_
|