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      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 WEBKIT_BROWSER_FILEAPI_SANDBOX_ORIGIN_DATABASE_H_
      6 #define WEBKIT_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 "webkit/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 fileapi {
     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 WEBKIT_STORAGE_BROWSER_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 fileapi
     76 
     77 #endif  // WEBKIT_BROWSER_FILEAPI_SANDBOX_ORIGIN_DATABASE_H_
     78