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              : #include <app/StorageDelegateWrapper.h>
      17              : 
      18              : #include <lib/support/SafeInt.h>
      19              : 
      20              : namespace chip {
      21              : namespace app {
      22              : 
      23           65 : CHIP_ERROR StorageDelegateWrapper::WriteValue(const StorageKeyName & aKey, const ByteSpan & aValue)
      24              : {
      25           65 :     VerifyOrReturnError(mStorage != nullptr, CHIP_ERROR_INCORRECT_STATE);
      26              : 
      27              :     // TODO: we may want to have a small cache for values that change a lot, so
      28              :     //  we only write them once a bunch of changes happen or on timer or
      29              :     //  shutdown.
      30           65 :     if (!CanCastTo<uint16_t>(aValue.size()))
      31              :     {
      32            0 :         return CHIP_ERROR_BUFFER_TOO_SMALL;
      33              :     }
      34           65 :     return mStorage->SyncSetKeyValue(aKey.KeyName(), aValue.data(), static_cast<uint16_t>(aValue.size()));
      35              : }
      36              : 
      37           72 : CHIP_ERROR StorageDelegateWrapper::ReadValue(const StorageKeyName & aKey, MutableByteSpan & aValue)
      38              : {
      39           72 :     VerifyOrReturnError(mStorage != nullptr, CHIP_ERROR_INCORRECT_STATE);
      40              : 
      41           72 :     uint16_t size = static_cast<uint16_t>(std::min(aValue.size(), static_cast<size_t>(UINT16_MAX)));
      42           72 :     ReturnErrorOnFailure(mStorage->SyncGetKeyValue(aKey.KeyName(), aValue.data(), size));
      43           66 :     aValue.reduce_size(size);
      44           66 :     return CHIP_NO_ERROR;
      45              : }
      46              : 
      47              : } // namespace app
      48              : } // namespace chip