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/*
*
* Copyright (c) 2021 Project CHIP Authors
* All rights reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/**
* @file
* Platform-specific key value storage implementation for ESP32.
*/
#pragma once
namespace chip {
namespace DeviceLayer {
namespace PersistedStorage {
class KeyValueStoreManagerImpl final : public KeyValueStoreManager
{
// Allow the KeyValueStoreManager interface class to delegate method calls to
// the implementation methods provided by this class.
friend class KeyValueStoreManager;
public:
// NOTE: Currently this platform does not support partial and offset reads
// these will return CHIP_ERROR_NOT_IMPLEMENTED.
CHIP_ERROR _Get(const char * key, void * value, size_t value_size, size_t * read_bytes_size = nullptr, size_t offset = 0);
CHIP_ERROR _Delete(const char * key);
CHIP_ERROR _Put(const char * key, const void * value, size_t value_size);
CHIP_ERROR EraseAll(void);
private:
const char * kNamespace = "CHIP_KVS";
// ===== Members for internal use by the following friends.
friend KeyValueStoreManager & KeyValueStoreMgr();
friend KeyValueStoreManagerImpl & KeyValueStoreMgrImpl();
static KeyValueStoreManagerImpl sInstance;
};
/**
* Returns the public interface of the KeyValueStoreManager singleton object.
*
* Chip applications should use this to access features of the KeyValueStoreManager object
* that are common to all platforms.
*/
inline KeyValueStoreManager & KeyValueStoreMgr(void)
{
return KeyValueStoreManagerImpl::sInstance;
}
/**
* Returns the platform-specific implementation of the KeyValueStoreManager singleton object.
*
* Chip applications can use this to gain access to features of the KeyValueStoreManager
* that are specific to the ESP32 platform.
*/
inline KeyValueStoreManagerImpl & KeyValueStoreMgrImpl(void)
{
return KeyValueStoreManagerImpl::sInstance;
}
} // namespace PersistedStorage
} // namespace DeviceLayer
} // namespace chip