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// Copyright 2018 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_LEVELDB_PROTO_INTERNAL_UNIQUE_PROTO_DATABASE_H_
#define COMPONENTS_LEVELDB_PROTO_INTERNAL_UNIQUE_PROTO_DATABASE_H_
#include <memory>
#include <string>
#include "base/component_export.h"
#include "base/functional/bind.h"
#include "base/sequence_checker.h"
#include "base/task/sequenced_task_runner.h"
#include "components/leveldb_proto/internal/proto_leveldb_wrapper.h"
#include "components/leveldb_proto/public/proto_database.h"
namespace leveldb_proto {
// An implementation of ProtoDatabase<std::string> that manages the lifecycle of
// a unique LevelDB instance.
class COMPONENT_EXPORT(LEVELDB_PROTO) UniqueProtoDatabase {
public:
explicit UniqueProtoDatabase(
const scoped_refptr<base::SequencedTaskRunner>& task_runner);
explicit UniqueProtoDatabase(std::unique_ptr<ProtoLevelDBWrapper>);
virtual ~UniqueProtoDatabase();
UniqueProtoDatabase(
const base::FilePath& database_dir,
const leveldb_env::Options& options,
const scoped_refptr<base::SequencedTaskRunner>& task_runner);
virtual void Init(const std::string& client_name,
Callbacks::InitStatusCallback callback);
virtual void InitWithDatabase(LevelDB* database,
const base::FilePath& database_dir,
const leveldb_env::Options& options,
bool destroy_on_corruption,
Callbacks::InitStatusCallback callback);
virtual void UpdateEntries(std::unique_ptr<KeyValueVector> entries_to_save,
std::unique_ptr<KeyVector> keys_to_remove,
Callbacks::UpdateCallback callback);
virtual void UpdateEntriesWithRemoveFilter(
std::unique_ptr<KeyValueVector> entries_to_save,
const KeyFilter& delete_key_filter,
Callbacks::UpdateCallback callback);
virtual void UpdateEntriesWithRemoveFilter(
std::unique_ptr<KeyValueVector> entries_to_save,
const KeyFilter& delete_key_filter,
const std::string& target_prefix,
Callbacks::UpdateCallback callback);
virtual void LoadEntries(typename Callbacks::LoadCallback callback);
virtual void LoadEntriesWithFilter(const KeyFilter& filter,
typename Callbacks::LoadCallback callback);
virtual void LoadEntriesWithFilter(const KeyFilter& key_filter,
const leveldb::ReadOptions& options,
const std::string& target_prefix,
typename Callbacks::LoadCallback callback);
virtual void LoadKeysAndEntries(
typename Callbacks::LoadKeysAndEntriesCallback callback);
virtual void LoadKeysAndEntriesWithFilter(
const KeyFilter& filter,
typename Callbacks::LoadKeysAndEntriesCallback callback);
virtual void LoadKeysAndEntriesWithFilter(
const KeyFilter& filter,
const leveldb::ReadOptions& options,
const std::string& target_prefix,
typename Callbacks::LoadKeysAndEntriesCallback callback);
virtual void LoadKeysAndEntriesInRange(
const std::string& start,
const std::string& end,
typename Callbacks::LoadKeysAndEntriesCallback callback);
virtual void LoadKeysAndEntriesWhile(
const std::string& start,
const KeyIteratorController& controller,
typename Callbacks::LoadKeysAndEntriesCallback callback);
virtual void LoadKeys(Callbacks::LoadKeysCallback callback);
virtual void LoadKeys(const std::string& target_prefix,
Callbacks::LoadKeysCallback callback);
virtual void GetEntry(const std::string& key,
typename Callbacks::GetCallback callback);
virtual void Destroy(Callbacks::DestroyCallback callback);
void RemoveKeysForTesting(const KeyFilter& key_filter,
const std::string& target_prefix,
Callbacks::UpdateCallback callback);
bool GetApproximateMemoryUse(uint64_t* approx_mem_use);
// Sets the identifier used by the underlying LevelDB wrapper to record
// metrics.
void SetMetricsId(const std::string& id);
protected:
std::unique_ptr<ProtoLevelDBWrapper> db_wrapper_;
private:
SEQUENCE_CHECKER(sequence_checker_);
base::FilePath database_dir_;
leveldb_env::Options options_;
std::unique_ptr<LevelDB> db_;
};
} // namespace leveldb_proto
#endif // COMPONENTS_LEVELDB_PROTO_INTERNAL_UNIQUE_PROTO_DATABASE_H_
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