blob: 9d16dd4ce1e6cd3df458f9d966f03509956cf9e6 [file] [log] [blame]
/*
*
* Copyright (c) 2021-2022 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.
*/
#pragma once
#include <lib/core/CHIPPersistentStorageDelegate.h>
#include <platform/CHIPDeviceLayer.h>
#include <slist.h>
#include "CYW30739Config.h"
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:
CHIP_ERROR Init(void);
// 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:
using Config = Internal::CYW30739Config;
static constexpr uint8_t mMaxEntryCount = 128;
struct KeyStorage
{
KeyStorage(const char * key = nullptr);
constexpr size_t GetSize() const { return sizeof(mValueSize) + strlen(mKey); }
bool IsMatchKey(const char * key) const;
uint16_t mValueSize;
char mKey[PersistentStorageDelegate::kKeyLengthMax + 1];
};
struct KeyConfigIdEntry : public slist_node_t
{
KeyConfigIdEntry(uint8_t configID, const KeyStorage & keyStorage) : mStorage(keyStorage), mConfigID(configID) {}
constexpr Config::Key GetValueConfigKey() const
{
return Internal::CYW30739ConfigKey(Config::kChipKvsValue_KeyBase, mConfigID);
}
constexpr Config::Key GetKeyConfigKey() const
{
return Internal::CYW30739ConfigKey(Config::kChipKvsKey_KeyBase, mConfigID);
}
constexpr KeyConfigIdEntry * Next() const { return static_cast<KeyConfigIdEntry *>(next); }
constexpr uint8_t NextConfigID() const { return mConfigID + 1; }
constexpr uint16_t GetValueSize() const { return mStorage.mValueSize; }
constexpr void SetValueSize(uint16_t valueSize) { mStorage.mValueSize = valueSize; }
KeyStorage mStorage;
uint8_t mConfigID;
};
KeyConfigIdEntry * AllocateEntry(const char * key);
KeyConfigIdEntry * FindEntry(const char * key, Optional<uint8_t> * freeConfigID = nullptr);
// ===== Members for internal use by the following friends.
friend KeyValueStoreManager & KeyValueStoreMgr();
friend KeyValueStoreManagerImpl & KeyValueStoreMgrImpl();
static KeyValueStoreManagerImpl sInstance;
slist_node_t mKeyConfigIdList;
};
/**
* 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