storage/browser/fileapi/sandbox_origin_database.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_ORIGIN_DATABASE_H_
   6 #define STORAGE_BROWSER_FILEAPI_SANDBOX_ORIGIN_DATABASE_H_
   7
   8 #include <string>
   9 #include <vector>
  10
  11 #include "base/memory/scoped_ptr.h"
  12 #include "base/time/time.h"
  13 #include "storage/browser/fileapi/sandbox_origin_database_interface.h"
  14
  15 namespace leveldb {
  16 class DB;
  17 class Env;
  18 class Status;
  19 }
  20
  21 namespace tracked_objects {
  22 class Location;
  23 }
  24
  25 namespace storage {
  26
  27 // All methods of this class other than the constructor may be used only from
  28 // the browser's FILE thread.  The constructor may be used on any thread.
  29 class STORAGE_EXPORT_PRIVATE SandboxOriginDatabase
  30     : public SandboxOriginDatabaseInterface {
  31  public:
  32   // Only one instance of SandboxOriginDatabase should exist for a given path
  33   // at a given time.
  34   SandboxOriginDatabase(const base::FilePath& file_system_directory,
  35                         leveldb::Env* env_override);
  36   virtual ~SandboxOriginDatabase();
  37
  38   // SandboxOriginDatabaseInterface overrides.
  39   virtual bool HasOriginPath(const std::string& origin) OVERRIDE;
  40   virtual bool GetPathForOrigin(const std::string& origin,
  41                                 base::FilePath* directory) OVERRIDE;
  42   virtual bool RemovePathForOrigin(const std::string& origin) OVERRIDE;
  43   virtual bool ListAllOrigins(std::vector<OriginRecord>* origins) OVERRIDE;
  44   virtual void DropDatabase() OVERRIDE;
  45
  46   base::FilePath GetDatabasePath() const;
  47   void RemoveDatabase();
  48
  49  private:
  50   enum RecoveryOption {
  51     REPAIR_ON_CORRUPTION,
  52     DELETE_ON_CORRUPTION,
  53     FAIL_ON_CORRUPTION,
  54   };
  55
  56   enum InitOption {
  57     CREATE_IF_NONEXISTENT,
  58     FAIL_IF_NONEXISTENT,
  59   };
  60
  61   bool Init(InitOption init_option, RecoveryOption recovery_option);
  62   bool RepairDatabase(const std::string& db_path);
  63   void HandleError(const tracked_objects::Location& from_here,
  64                    const leveldb::Status& status);
  65   void ReportInitStatus(const leveldb::Status& status);
  66   bool GetLastPathNumber(int* number);
  67
  68   base::FilePath file_system_directory_;
  69   leveldb::Env* env_override_;
  70   scoped_ptr<leveldb::DB> db_;
  71   base::Time last_reported_time_;
  72   DISALLOW_COPY_AND_ASSIGN(SandboxOriginDatabase);
  73 };
  74
  75 }  // namespace storage
  76
  77 #endif  // STORAGE_BROWSER_FILEAPI_SANDBOX_ORIGIN_DATABASE_H_