91 lines
2.1 KiB
C++
91 lines
2.1 KiB
C++
/*
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Copyright© 2021 John Sennesael
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UsenetSearch is Free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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UsenetSearch is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with UsenetSearch. If not, see <https://www.gnu.org/licenses/>.
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*/
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#pragma once
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#include <string>
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#include <type_traits>
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#include <memory>
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#include <stdexcept>
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namespace usenetsearch {
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/**
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* Simple logging class singleton.
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*/
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class Logger
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{
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/// Holds a pointer to the singleton instance.
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static std::unique_ptr<Logger> m_instance;
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public:
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/**
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* Constructor.
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*/
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Logger();
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/**
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* Destructor.
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*/
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virtual ~Logger() = default;
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/**
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* Gets an instance to the logger.
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*/
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static Logger& get();
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/**
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* Logs a debug message.
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*
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* @param[in] msg Message to be logged.
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*/
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void debug(const std::string& msg) const;
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/**
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* Logs an info message.
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*
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* @param[in] msg Message to be logged.
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*/
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void info(const std::string& msg) const;
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/**
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* Logs an error message.
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*
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* @param[in] msg Message to be logged.
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*/
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void error(const std::string& msg) const;
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/**
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* Logs an error message and throws.
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*
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* @tparam EXCEPTION Type of exception to throw.
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* @param[in] msg Error message to be logged.
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*/
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template <typename EXCEPTION>
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inline void fatal(const std::string& msg) const
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{
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static_assert(
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std::is_base_of<std::exception, EXCEPTION>::value,
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"EXCEPTION must be an std::exception or derrived child.");
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error(msg);
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throw EXCEPTION(msg);
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};
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};
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} // namespace usenetsearch
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