src/webkit/browser/fileapi/quota/quota_backend_impl.h

   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 WEBKIT_BROWSER_FILEAPI_QUOTA_QUOTA_BACKEND_IMPL_H_
   6 #define WEBKIT_BROWSER_FILEAPI_QUOTA_QUOTA_BACKEND_IMPL_H_
   7
   8 #include "base/memory/ref_counted.h"
   9 #include "base/memory/weak_ptr.h"
  10 #include "webkit/browser/fileapi/quota/quota_reservation_manager.h"
  11 #include "webkit/browser/fileapi/sandbox_file_system_backend_delegate.h"
  12 #include "webkit/browser/webkit_storage_browser_export.h"
  13 #include "webkit/common/quota/quota_status_code.h"
  14
  15 namespace base {
  16 class SequencedTaskRunner;
  17 }
  18
  19 namespace content {
  20 class QuotaBackendImplTest;
  21 }
  22
  23 namespace quota {
  24 class QuotaManagerProxy;
  25 }
  26
  27 namespace fileapi {
  28
  29 class FileSystemUsageCache;
  30 class ObfuscatedFileUtil;
  31
  32 // An instance of this class is owned by QuotaReservationManager.
  33 class WEBKIT_STORAGE_BROWSER_EXPORT QuotaBackendImpl
  34     : public QuotaReservationManager::QuotaBackend {
  35  public:
  36   typedef QuotaReservationManager::ReserveQuotaCallback
  37       ReserveQuotaCallback;
  38
  39   QuotaBackendImpl(base::SequencedTaskRunner* file_task_runner,
  40                    ObfuscatedFileUtil* obfuscated_file_util,
  41                    FileSystemUsageCache* file_system_usage_cache,
  42                    quota::QuotaManagerProxy* quota_manager_proxy);
  43   virtual ~QuotaBackendImpl();
  44
  45   // QuotaReservationManager::QuotaBackend overrides.
  46   virtual void ReserveQuota(
  47       const GURL& origin,
  48       FileSystemType type,
  49       int64 delta,
  50       const ReserveQuotaCallback& callback) OVERRIDE;
  51   virtual void ReleaseReservedQuota(
  52       const GURL& origin,
  53       FileSystemType type,
  54       int64 size) OVERRIDE;
  55   virtual void CommitQuotaUsage(
  56       const GURL& origin,
  57       FileSystemType type,
  58       int64 delta) OVERRIDE;
  59   virtual void IncrementDirtyCount(
  60       const GURL& origin,
  61       FileSystemType type) OVERRIDE;
  62   virtual void DecrementDirtyCount(
  63       const GURL& origin,
  64       FileSystemType type) OVERRIDE;
  65
  66  private:
  67   friend class content::QuotaBackendImplTest;
  68
  69   struct QuotaReservationInfo {
  70     QuotaReservationInfo(const GURL& origin, FileSystemType type, int64 delta);
  71     ~QuotaReservationInfo();
  72
  73     GURL origin;
  74     FileSystemType type;
  75     int64 delta;
  76   };
  77
  78   void DidGetUsageAndQuotaForReserveQuota(
  79       const QuotaReservationInfo& info,
  80       const ReserveQuotaCallback& callback,
  81       quota::QuotaStatusCode status,
  82       int64 usage,
  83       int64 quota);
  84
  85   void ReserveQuotaInternal(
  86       const QuotaReservationInfo& info);
  87   base::File::Error GetUsageCachePath(
  88       const GURL& origin,
  89       FileSystemType type,
  90       base::FilePath* usage_file_path);
  91
  92   scoped_refptr<base::SequencedTaskRunner> file_task_runner_;
  93
  94   // Owned by SandboxFileSystemBackendDelegate.
  95   ObfuscatedFileUtil* obfuscated_file_util_;
  96   FileSystemUsageCache* file_system_usage_cache_;
  97
  98   scoped_refptr<quota::QuotaManagerProxy> quota_manager_proxy_;
  99
 100   base::WeakPtrFactory<QuotaBackendImpl> weak_ptr_factory_;
 101
 102   DISALLOW_COPY_AND_ASSIGN(QuotaBackendImpl);
 103 };
 104
 105 }  // namespace fileapi
 106
 107 #endif  // WEBKIT_BROWSER_FILEAPI_QUOTA_QUOTA_BACKEND_IMPL_H_