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// Copyright 2016 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 COMPONENTS_LEVELDB_LEVELDB_SERVICE_IMPL_H_
#define COMPONENTS_LEVELDB_LEVELDB_SERVICE_IMPL_H_
#include "base/memory/ref_counted.h"
#include "components/leveldb/leveldb_mojo_proxy.h"
#include "components/leveldb/public/interfaces/leveldb.mojom.h"
#include "mojo/public/cpp/bindings/binding_set.h"
namespace leveldb {
// Creates LevelDBDatabases based scoped to a |directory|/|dbname|.
class LevelDBServiceImpl : public mojom::LevelDBService {
public:
// The |file_task_runner| is used to run tasks to interact with the
// file_service. Specifically this task runner must NOT be the same as the
// task runner this implementation runs on, or deadlock might occur.
LevelDBServiceImpl(
scoped_refptr<base::SingleThreadTaskRunner> file_task_runner);
~LevelDBServiceImpl() override;
// Overridden from LevelDBService:
void SetEnvironmentName(const std::string& name) override;
void Open(filesystem::mojom::DirectoryPtr directory,
const std::string& dbname,
leveldb::mojom::LevelDBDatabaseAssociatedRequest database,
const OpenCallback& callback) override;
void OpenWithOptions(
leveldb::mojom::OpenOptionsPtr open_options,
filesystem::mojom::DirectoryPtr directory,
const std::string& dbname,
leveldb::mojom::LevelDBDatabaseAssociatedRequest database,
const OpenCallback& callback) override;
void OpenInMemory(leveldb::mojom::LevelDBDatabaseAssociatedRequest database,
const OpenInMemoryCallback& callback) override;
void Destroy(filesystem::mojom::DirectoryPtr directory,
const std::string& dbname,
const DestroyCallback& callback) override;
private:
// Thread to own the mojo message pipe. Because leveldb spawns multiple
// threads that want to call file stuff, we create a dedicated thread to send
// and receive mojo message calls.
scoped_refptr<LevelDBMojoProxy> thread_;
std::string environment_name_;
DISALLOW_COPY_AND_ASSIGN(LevelDBServiceImpl);
};
} // namespace leveldb
#endif // COMPONENTS_LEVELDB_LEVELDB_SERVICE_IMPL_H_
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