Line data    Source code

       1              : /*
       2              :  *    Copyright (c) 2024 Project CHIP Authors
       3              :  *
       4              :  *    Licensed under the Apache License, Version 2.0 (the "License");
       5              :  *    you may not use this file except in compliance with the License.
       6              :  *    You may obtain a copy of the License at
       7              :  *
       8              :  *        http://www.apache.org/licenses/LICENSE-2.0
       9              :  *
      10              :  *    Unless required by applicable law or agreed to in writing, software
      11              :  *    distributed under the License is distributed on an "AS IS" BASIS,
      12              :  *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
      13              :  *    See the License for the specific language governing permissions and
      14              :  *    limitations under the License.
      15              :  */
      16              : #pragma once
      17              : 
      18              : #include <lib/core/CHIPPersistentStorageDelegate.h>
      19              : #include <lib/support/CodeUtils.h>
      20              : #include <lib/support/DefaultStorageKeyAllocator.h>
      21              : 
      22              : namespace chip {
      23              : namespace app {
      24              : 
      25              : /**
      26              :  * Wraps around a PersistentStorageDelegate to perform ByteSpan I/O over StorageKey
      27              :  */
      28              : class StorageDelegateWrapper
      29              : {
      30              : public:
      31              :     StorageDelegateWrapper() = default;
      32              : 
      33              :     // Passed-in storage must outlive this object.
      34            8 :     CHIP_ERROR Init(PersistentStorageDelegate * storage)
      35              :     {
      36            8 :         VerifyOrReturnError(storage != nullptr, CHIP_ERROR_INVALID_ARGUMENT);
      37            8 :         mStorage = storage;
      38            8 :         return CHIP_NO_ERROR;
      39              :     }
      40              : 
      41              :     CHIP_ERROR WriteValue(const StorageKeyName & aKey, const ByteSpan & aValue);
      42              :     CHIP_ERROR ReadValue(const StorageKeyName & aKey, MutableByteSpan & aValue);
      43              : 
      44              : private:
      45              :     PersistentStorageDelegate * mStorage;
      46              : };
      47              : 
      48              : } // namespace app
      49              : } // namespace chip