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
|
// Copyright 2019 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_PRINTING_HISTORY_PRINT_JOB_DATABASE_IMPL_H_
#define CHROME_BROWSER_ASH_PRINTING_HISTORY_PRINT_JOB_DATABASE_IMPL_H_
#include <queue>
#include <unordered_map>
#include "base/memory/weak_ptr.h"
#include "chrome/browser/ash/printing/history/print_job_database.h"
#include "components/leveldb_proto/public/proto_database.h"
namespace base {
class FilePath;
} // namespace base
namespace leveldb_proto {
class ProtoDatabaseProvider;
} // namespace leveldb_proto
namespace ash {
class PrintJobDatabaseImpl : public PrintJobDatabase {
public:
PrintJobDatabaseImpl(leveldb_proto::ProtoDatabaseProvider* database_provider,
base::FilePath profile_path);
PrintJobDatabaseImpl(const PrintJobDatabaseImpl&) = delete;
PrintJobDatabaseImpl& operator=(const PrintJobDatabaseImpl&) = delete;
~PrintJobDatabaseImpl() override;
// PrintJobDatabase:
void Initialize(InitializeCallback callback) override;
bool IsInitialized() override;
void SavePrintJob(const printing::proto::PrintJobInfo& print_job_info,
SavePrintJobCallback callback) override;
void DeletePrintJobs(const std::vector<std::string>& ids,
DeletePrintJobsCallback callback) override;
void Clear(DeletePrintJobsCallback callback) override;
void GetPrintJobs(GetPrintJobsCallback callback) override;
private:
friend class PrintJobDatabaseImplTest;
enum class InitStatus { UNINITIALIZED, PENDING, INITIALIZED, FAILED };
void OnInitialized(InitializeCallback callback,
leveldb_proto::Enums::InitStatus status);
void OnKeysAndEntriesLoaded(
InitializeCallback callback,
bool success,
std::unique_ptr<std::map<std::string, printing::proto::PrintJobInfo>>
entries);
void FinishInitialization(InitializeCallback callback, bool success);
void OnPrintJobSaved(const printing::proto::PrintJobInfo& print_job_info,
SavePrintJobCallback callback,
bool success);
void OnPrintJobsDeleted(const std::vector<std::string>& ids,
DeletePrintJobsCallback callback,
bool success);
void GetPrintJobsFromProtoDatabase(
GetPrintJobsFromProtoDatabaseCallback callback);
void OnPrintJobsRetrieved(GetPrintJobsCallback callback,
bool success,
std::vector<printing::proto::PrintJobInfo> entries);
void OnPrintJobRetrievedFromDatabase(
GetPrintJobsFromProtoDatabaseCallback callback,
bool success,
std::unique_ptr<std::vector<printing::proto::PrintJobInfo>> entries);
// The persistent ProtoDatabase for storing print job information.
std::unique_ptr<leveldb_proto::ProtoDatabase<printing::proto::PrintJobInfo>>
database_;
// Cached PrintJobInfo entries.
std::unordered_map<std::string, printing::proto::PrintJobInfo> cache_;
// Indicates the status of database initialization.
InitStatus init_status_;
// Number of initialize attempts.
int initialize_attempts_ = 0;
// Stores callbacks for delayed execution once database is initialized.
std::queue<base::OnceClosure> deferred_callbacks_;
base::WeakPtrFactory<PrintJobDatabaseImpl> weak_ptr_factory_{this};
};
} // namespace ash
#endif // CHROME_BROWSER_ASH_PRINTING_HISTORY_PRINT_JOB_DATABASE_IMPL_H_
|
