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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef WEBKIT_FILEAPI_FILE_SYSTEM_ORIGIN_DATABASE_H_
#define WEBKIT_FILEAPI_FILE_SYSTEM_ORIGIN_DATABASE_H_
#include <string>
#include <utility>
#include <vector>
#include "base/file_path.h"
#include "base/memory/scoped_ptr.h"
#include "base/time.h"
#include "webkit/storage/webkit_storage_export.h"
namespace leveldb {
class DB;
class Status;
}
namespace tracked_objects {
class Location;
}
namespace fileapi {
// All methods of this class other than the constructor may be used only from
// the browser's FILE thread. The constructor may be used on any thread.
class WEBKIT_STORAGE_EXPORT_PRIVATE FileSystemOriginDatabase {
public:
struct WEBKIT_STORAGE_EXPORT_PRIVATE OriginRecord {
std::string origin;
FilePath path;
OriginRecord();
OriginRecord(const std::string& origin, const FilePath& path);
~OriginRecord();
};
// Only one instance of FileSystemOriginDatabase should exist for a given path
// at a given time.
explicit FileSystemOriginDatabase(const FilePath& file_system_directory);
~FileSystemOriginDatabase();
bool HasOriginPath(const std::string& origin);
// This will produce a unique path and add it to its database, if it's not
// already present.
bool GetPathForOrigin(const std::string& origin, FilePath* directory);
// Also returns success if the origin is not found.
bool RemovePathForOrigin(const std::string& origin);
bool ListAllOrigins(std::vector<OriginRecord>* origins);
// This will release all database resources in use; call it to save memory.
void DropDatabase();
private:
enum RecoveryOption {
REPAIR_ON_CORRUPTION,
DELETE_ON_CORRUPTION,
FAIL_ON_CORRUPTION,
};
bool Init(RecoveryOption recovery_option);
bool RepairDatabase(const std::string& db_path);
void HandleError(const tracked_objects::Location& from_here,
const leveldb::Status& status);
void ReportInitStatus(const leveldb::Status& status);
bool GetLastPathNumber(int* number);
FilePath file_system_directory_;
scoped_ptr<leveldb::DB> db_;
base::Time last_reported_time_;
DISALLOW_COPY_AND_ASSIGN(FileSystemOriginDatabase);
};
} // namespace fileapi
#endif // WEBKIT_FILEAPI_FILE_SYSTEM_ORIGIN_DATABASE_H_
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