111 lines
2.9 KiB
C++
111 lines
2.9 KiB
C++
/*
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* Copyright Andrey Semashev 2007 - 2015.
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* Distributed under the Boost Software License, Version 1.0.
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* (See accompanying file LICENSE_1_0.txt or copy at
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* http://www.boost.org/LICENSE_1_0.txt)
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*/
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#include <cstddef>
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#include <string>
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#include <ostream>
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#include <fstream>
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#include <boost/smart_ptr/shared_ptr.hpp>
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#include <boost/smart_ptr/make_shared_object.hpp>
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#include <boost/log/core.hpp>
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#include <boost/log/expressions.hpp>
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#include <boost/log/sources/severity_channel_logger.hpp>
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#include <boost/log/sources/record_ostream.hpp>
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#include <boost/log/sources/global_logger_storage.hpp>
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#include <boost/log/sinks/sync_frontend.hpp>
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#include <boost/log/sinks/text_ostream_backend.hpp>
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#include <boost/log/utility/setup/common_attributes.hpp>
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namespace logging = boost::log;
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namespace src = boost::log::sources;
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namespace expr = boost::log::expressions;
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namespace sinks = boost::log::sinks;
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namespace attrs = boost::log::attributes;
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namespace keywords = boost::log::keywords;
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//[ example_sources_severity_channel
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enum severity_level
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{
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normal,
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notification,
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warning,
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error,
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critical
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};
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typedef src::severity_channel_logger_mt<
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severity_level, // the type of the severity level
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std::string // the type of the channel name
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> my_logger_mt;
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BOOST_LOG_INLINE_GLOBAL_LOGGER_INIT(my_logger, my_logger_mt)
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{
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// Specify the channel name on construction, similarly as with the channel_logger
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return my_logger_mt(keywords::channel = "my_logger");
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}
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void logging_function()
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{
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// Do logging with the severity level. The record will have both
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// the severity level and the channel name attached.
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BOOST_LOG_SEV(my_logger::get(), normal) << "Hello, world!";
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}
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//]
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// The operator puts a human-friendly representation of the severity level to the stream
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std::ostream& operator<< (std::ostream& strm, severity_level level)
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{
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static const char* strings[] =
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{
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"normal",
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"notification",
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"warning",
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"error",
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"critical"
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};
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if (static_cast< std::size_t >(level) < sizeof(strings) / sizeof(*strings))
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strm << strings[level];
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else
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strm << static_cast< int >(level);
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return strm;
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}
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void init()
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{
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typedef sinks::synchronous_sink< sinks::text_ostream_backend > text_sink;
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boost::shared_ptr< text_sink > sink = boost::make_shared< text_sink >();
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sink->locked_backend()->add_stream(
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boost::make_shared< std::ofstream >("sample.log"));
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sink->set_formatter
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(
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expr::stream
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<< expr::attr< unsigned int >("LineID")
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<< ": <" << expr::attr< severity_level >("Severity")
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<< ">\t"
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<< "[" << expr::attr< std::string >("Channel") << "] "
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<< expr::smessage
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);
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logging::core::get()->add_sink(sink);
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// Add attributes
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logging::add_common_attributes();
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}
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int main(int, char*[])
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{
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init();
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logging_function();
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return 0;
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}
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