1 // Copyright 2013 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 #ifndef STORAGE_BROWSER_FILE_SYSTEM_QUOTA_QUOTA_BACKEND_IMPL_H_
6 #define STORAGE_BROWSER_FILE_SYSTEM_QUOTA_QUOTA_BACKEND_IMPL_H_
7
8 #include <stdint.h>
9
10 #include "base/component_export.h"
11 #include "base/macros.h"
12 #include "base/memory/ref_counted.h"
13 #include "base/memory/weak_ptr.h"
14 #include "storage/browser/file_system/quota/quota_reservation_manager.h"
15 #include "storage/browser/file_system/sandbox_file_system_backend_delegate.h"
16 #include "third_party/blink/public/mojom/quota/quota_types.mojom.h"
17 #include "url/origin.h"
18
19 namespace base {
20 class SequencedTaskRunner;
21 }
22
23 namespace storage {
24
25 class FileSystemUsageCache;
26 class ObfuscatedFileUtil;
27 class QuotaManagerProxy;
28
29 // An instance of this class is owned by QuotaReservationManager.
COMPONENT_EXPORT(STORAGE_BROWSER)30 class COMPONENT_EXPORT(STORAGE_BROWSER) QuotaBackendImpl
31 : public QuotaReservationManager::QuotaBackend {
32 public:
33 using ReserveQuotaCallback = QuotaReservationManager::ReserveQuotaCallback;
34
35 QuotaBackendImpl(base::SequencedTaskRunner* file_task_runner,
36 ObfuscatedFileUtil* obfuscated_file_util,
37 FileSystemUsageCache* file_system_usage_cache,
38 QuotaManagerProxy* quota_manager_proxy);
39 ~QuotaBackendImpl() override;
40
41 // QuotaReservationManager::QuotaBackend overrides.
42 void ReserveQuota(const url::Origin& origin,
43 FileSystemType type,
44 int64_t delta,
45 ReserveQuotaCallback callback) override;
46 void ReleaseReservedQuota(const url::Origin& origin,
47 FileSystemType type,
48 int64_t size) override;
49 void CommitQuotaUsage(const url::Origin& origin,
50 FileSystemType type,
51 int64_t delta) override;
52 void IncrementDirtyCount(const url::Origin& origin,
53 FileSystemType type) override;
54 void DecrementDirtyCount(const url::Origin& origin,
55 FileSystemType type) override;
56
57 private:
58 friend class QuotaBackendImplTest;
59
60 struct QuotaReservationInfo {
61 QuotaReservationInfo(const url::Origin& origin,
62 FileSystemType type,
63 int64_t delta);
64 ~QuotaReservationInfo();
65
66 url::Origin origin;
67 FileSystemType type;
68 int64_t delta;
69 };
70
71 void DidGetUsageAndQuotaForReserveQuota(const QuotaReservationInfo& info,
72 ReserveQuotaCallback callback,
73 blink::mojom::QuotaStatusCode status,
74 int64_t usage,
75 int64_t quota);
76
77 void ReserveQuotaInternal(const QuotaReservationInfo& info);
78 base::File::Error GetUsageCachePath(const url::Origin& origin,
79 FileSystemType type,
80 base::FilePath* usage_file_path);
81
82 scoped_refptr<base::SequencedTaskRunner> file_task_runner_;
83
84 // Owned by SandboxFileSystemBackendDelegate.
85 ObfuscatedFileUtil* obfuscated_file_util_;
86 FileSystemUsageCache* file_system_usage_cache_;
87
88 scoped_refptr<QuotaManagerProxy> quota_manager_proxy_;
89
90 base::WeakPtrFactory<QuotaBackendImpl> weak_ptr_factory_{this};
91
92 DISALLOW_COPY_AND_ASSIGN(QuotaBackendImpl);
93 };
94
95 } // namespace storage
96
97 #endif // STORAGE_BROWSER_FILE_SYSTEM_QUOTA_QUOTA_BACKEND_IMPL_H_
98