84 lines
1.9 KiB
C++
84 lines
1.9 KiB
C++
//
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// basic_logger.hpp
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// ~~~~~~~~~~~~~~~~
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//
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// Copyright (c) 2003-2019 Christopher M. Kohlhoff (chris at kohlhoff dot com)
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//
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// Distributed under the Boost Software License, Version 1.0. (See accompanying
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// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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//
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#ifndef SERVICES_BASIC_LOGGER_HPP
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#define SERVICES_BASIC_LOGGER_HPP
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#include <boost/asio.hpp>
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#include <boost/noncopyable.hpp>
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#include <string>
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namespace services {
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/// Class to provide simple logging functionality. Use the services::logger
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/// typedef.
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template <typename Service>
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class basic_logger
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: private boost::noncopyable
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{
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public:
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/// The type of the service that will be used to provide timer operations.
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typedef Service service_type;
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/// The native implementation type of the timer.
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typedef typename service_type::impl_type impl_type;
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/// Constructor.
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/**
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* This constructor creates a logger.
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*
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* @param context The execution context used to locate the logger service.
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*
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* @param identifier An identifier for this logger.
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*/
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explicit basic_logger(boost::asio::execution_context& context,
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const std::string& identifier)
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: service_(boost::asio::use_service<Service>(context)),
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impl_(service_.null())
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{
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service_.create(impl_, identifier);
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}
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/// Destructor.
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~basic_logger()
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{
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service_.destroy(impl_);
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}
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/// Get the io_context associated with the object.
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boost::asio::io_context& get_io_context()
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{
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return service_.get_io_context();
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}
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/// Set the output file for all logger instances.
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void use_file(const std::string& file)
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{
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service_.use_file(impl_, file);
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}
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/// Log a message.
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void log(const std::string& message)
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{
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service_.log(impl_, message);
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}
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private:
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/// The backend service implementation.
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service_type& service_;
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/// The underlying native implementation.
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impl_type impl_;
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};
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} // namespace services
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#endif // SERVICES_BASIC_LOGGER_HPP
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