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/*
* SPDX-FileCopyrightText: 2015-2023 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
#ifndef NVS_HANDLE_LOCKED_HPP_
#define NVS_HANDLE_LOCKED_HPP_
#include "nvs_handle_simple.hpp"
namespace nvs {
/**
* @brief A class which behaves the same as NVSHandleSimple, except that all public member functions are locked.
*
* This class follows the decorator design pattern. The reason why we don't want locks in NVSHandleSimple is that
* NVSHandleSimple can also be used by the C-API which locks its public functions already.
* Thus, we avoid double-locking.
*
* @note this class becomes responsible for its internal NVSHandleSimple object, i.e. it deletes the handle object on
* destruction
*/
class NVSHandleLocked : public NVSHandle {
public:
/**
* @param handle The NVSHandleSimple instance which this class "decorates" (see Decorator design pattern).
*
* @note Lock::init() MUST be called BEFORE an instance of this class is used.
*/
NVSHandleLocked(NVSHandleSimple *handle);
virtual ~NVSHandleLocked();
esp_err_t set_string(const char *key, const char* str) override;
esp_err_t set_blob(const char *key, const void* blob, size_t len) override;
esp_err_t get_string(const char *key, char* out_str, size_t len) override;
esp_err_t get_blob(const char *key, void* out_blob, size_t len) override;
esp_err_t get_item_size(ItemType datatype, const char *key, size_t &size) override;
esp_err_t find_key(const char* key, nvs_type_t &nvstype) override;
esp_err_t erase_item(const char* key) override;
esp_err_t erase_all() override;
esp_err_t commit() override;
esp_err_t get_used_entry_count(size_t& usedEntries) override;
protected:
esp_err_t set_typed_item(ItemType datatype, const char *key, const void* data, size_t dataSize) override;
esp_err_t get_typed_item(ItemType datatype, const char *key, void* data, size_t dataSize) override;
private:
NVSHandleSimple *handle;
};
} // namespace nvs
#endif // NVS_HANDLE_LOCKED_HPP_
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