LogContext.h

/*
 * Copyright (C) 2019-2024 HERE Europe B.V.
 *
 * 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.
 *
 * SPDX-License-Identifier: Apache-2.0
 * License-Filename: LICENSE
 */
 
#pragma once
 
#include <olp/core/CoreApi.h>
 
#include <functional>
#include <memory>
#include <string>
#include <unordered_map>
 
namespace olp {
namespace logging {
using LogContext = std::unordered_map<std::string, std::string>;
 
using LogContextSetter = std::function<void(std::shared_ptr<const LogContext>)>;
 
using LogContextGetter = std::function<std::shared_ptr<const LogContext>()>;
 
CORE_API void SetLogContextGetterSetter(LogContextGetter getter,
                                        LogContextSetter setter);
 
CORE_API std::shared_ptr<const LogContext> GetContext();
 
CORE_API const std::string& GetContextValue(const std::string& key);
 
class CORE_API ScopedLogContext final {
 public:
  ScopedLogContext(const std::shared_ptr<const LogContext>& context);
  ~ScopedLogContext();
 
 private:
  std::shared_ptr<const LogContext> context_;
  std::shared_ptr<const LogContext> prev_context_;
};
}  // namespace logging
}  // namespace olp