/*
 *
 *    Copyright (c) 2021 Project CHIP Authors
 *
 *    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
 *          Implements a getter and setter for a singleton DiagnosticDataProvider object.
 */

#include <lib/support/CodeUtils.h>
#include <platform/DiagnosticDataProvider.h>

namespace chip {
namespace DeviceLayer {

class DiagnosticDataProvider;

namespace {

/** Singleton pointer to the DiagnosticDataProvider implementation.
 */
DiagnosticDataProvider * gInstance = nullptr;

} // namespace

DiagnosticDataProvider & GetDiagnosticDataProvider()
{
    if (gInstance != nullptr)
    {
        return *gInstance;
    }

    return GetDiagnosticDataProviderImpl();
}

void SetDiagnosticDataProvider(DiagnosticDataProvider * diagnosticDataProvider)
{
    if (diagnosticDataProvider != nullptr)
    {
        gInstance = diagnosticDataProvider;
    }
}

} // namespace DeviceLayer
} // namespace chip
