logging_mixin.h

Go to the documentation of this file.

/*
 * Copyright 2022 MusicScience37 (Kenta Kabashima)
 *
 * 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.
 */
#pragma once
 
#include "num_collect/logging/log_tag_view.h"
#include "num_collect/logging/logger.h"
 
namespace num_collect::logging {
 
class logging_mixin {
public:
    explicit logging_mixin(log_tag_view tag) : logger_(tag) {}
 
    [[nodiscard]] auto logger() const noexcept
        -> const num_collect::logging::logger& {
        return logger_;
    }
 
    [[nodiscard]] auto logger() noexcept -> num_collect::logging::logger& {
        return logger_;
    }
 
    template <typename Child>
    void configure_child_algorithm_logger_if_exists(Child& child) {
        if constexpr (requires(Child& obj) { obj.logger(); }) {
            this->logger().initialize_child_algorithm_logger(child.logger());
        }
    }
 
private:
    num_collect::logging::logger logger_;
};
 
}  // namespace num_collect::logging