storage/browser/fileapi/sandbox_quota_observer.h

   1 // Copyright (c) 2012 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_FILEAPI_SANDBOX_QUOTA_OBSERVER_H_
   6 #define STORAGE_BROWSER_FILEAPI_SANDBOX_QUOTA_OBSERVER_H_
   7
   8 #include <map>
   9
  10 #include "base/basictypes.h"
  11 #include "base/compiler_specific.h"
  12 #include "base/files/file_path.h"
  13 #include "base/memory/ref_counted.h"
  14 #include "base/memory/scoped_ptr.h"
  15 #include "base/memory/weak_ptr.h"
  16 #include "storage/browser/fileapi/file_observers.h"
  17 #include "storage/browser/fileapi/file_system_url.h"
  18
  19 namespace base {
  20 class SequencedTaskRunner;
  21 }
  22
  23 namespace storage {
  24 class QuotaManagerProxy;
  25 }
  26
  27 namespace storage {
  28
  29 class FileSystemUsageCache;
  30 class FileSystemURL;
  31 class TimedTaskHelper;
  32 class ObfuscatedFileUtil;
  33
  34 class SandboxQuotaObserver
  35     : public FileUpdateObserver,
  36       public FileAccessObserver {
  37  public:
  38   typedef std::map<base::FilePath, int64> PendingUpdateNotificationMap;
  39
  40   SandboxQuotaObserver(storage::QuotaManagerProxy* quota_manager_proxy,
  41                        base::SequencedTaskRunner* update_notify_runner,
  42                        ObfuscatedFileUtil* sandbox_file_util,
  43                        FileSystemUsageCache* file_system_usage_cache_);
  44   ~SandboxQuotaObserver() override;
  45
  46   // FileUpdateObserver overrides.
  47   void OnStartUpdate(const FileSystemURL& url) override;
  48   void OnUpdate(const FileSystemURL& url, int64 delta) override;
  49   void OnEndUpdate(const FileSystemURL& url) override;
  50
  51   // FileAccessObserver overrides.
  52   void OnAccess(const FileSystemURL& url) override;
  53
  54   void SetUsageCacheEnabled(const GURL& origin,
  55                             FileSystemType type,
  56                             bool enabled);
  57
  58  private:
  59   void ApplyPendingUsageUpdate();
  60   void UpdateUsageCacheFile(const base::FilePath& usage_file_path, int64 delta);
  61
  62   base::FilePath GetUsageCachePath(const FileSystemURL& url);
  63
  64   scoped_refptr<storage::QuotaManagerProxy> quota_manager_proxy_;
  65   scoped_refptr<base::SequencedTaskRunner> update_notify_runner_;
  66
  67   // Not owned; sandbox_file_util_ should have identical lifetime with this.
  68   ObfuscatedFileUtil* sandbox_file_util_;
  69
  70   // Not owned; file_system_usage_cache_ should have longer lifetime than this.
  71   FileSystemUsageCache* file_system_usage_cache_;
  72
  73   PendingUpdateNotificationMap pending_update_notification_;
  74   scoped_ptr<TimedTaskHelper> delayed_cache_update_helper_;
  75
  76   DISALLOW_COPY_AND_ASSIGN(SandboxQuotaObserver);
  77 };
  78
  79 }  // namespace storage
  80
  81 #endif  // STORAGE_BROWSER_FILEAPI_SANDBOX_QUOTA_OBSERVER_H_