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// Copyright 2017 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef COMPONENTS_DOWNLOAD_INTERNAL_BACKGROUND_SERVICE_DOWNLOAD_STORE_H_
#define COMPONENTS_DOWNLOAD_INTERNAL_BACKGROUND_SERVICE_DOWNLOAD_STORE_H_
#include <string>
#include <vector>
#include "base/memory/weak_ptr.h"
#include "components/download/internal/background_service/store.h"
#include "components/leveldb_proto/public/proto_database.h"
namespace protodb {
class Entry;
} // namespace protodb
namespace download {
// DownloadStore provides a layer around a LevelDB proto database that persists
// the download request, scheduling params and metadata to the disk. The data is
// read during initialization and presented to the caller after converting to
// Entry entries.
class DownloadStore : public Store {
public:
DownloadStore(
std::unique_ptr<leveldb_proto::ProtoDatabase<protodb::Entry>> db);
DownloadStore(const DownloadStore&) = delete;
DownloadStore& operator=(const DownloadStore&) = delete;
~DownloadStore() override;
// Store implementation.
bool IsInitialized() override;
void Initialize(InitCallback callback) override;
void HardRecover(StoreCallback callback) override;
void Update(const Entry& entry, StoreCallback callback) override;
void Remove(const std::string& guid, StoreCallback callback) override;
private:
void OnDatabaseInited(InitCallback callback,
leveldb_proto::Enums::InitStatus status);
void OnDatabaseLoaded(InitCallback callback,
bool success,
std::unique_ptr<std::vector<protodb::Entry>> protos);
void OnDatabaseDestroyed(StoreCallback callback, bool success);
void OnDatabaseInitedAfterDestroy(StoreCallback callback,
leveldb_proto::Enums::InitStatus status);
std::unique_ptr<leveldb_proto::ProtoDatabase<protodb::Entry>> db_;
bool is_initialized_;
base::WeakPtrFactory<DownloadStore> weak_factory_{this};
};
} // namespace download
#endif // COMPONENTS_DOWNLOAD_INTERNAL_BACKGROUND_SERVICE_DOWNLOAD_STORE_H_
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