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- /*
- * Copyright Andrey Semashev 2007 - 2015.
- * Distributed under the Boost Software License, Version 1.0.
- * (See accompanying file LICENSE_1_0.txt or copy at
- * http://www.boost.org/LICENSE_1_0.txt)
- */
- #include <string>
- #include <iostream>
- #include <boost/smart_ptr/shared_ptr.hpp>
- #include <boost/smart_ptr/make_shared_object.hpp>
- #include <boost/log/core.hpp>
- #include <boost/log/expressions.hpp>
- #include <boost/log/sinks/sync_frontend.hpp>
- #include <boost/log/sinks/text_multifile_backend.hpp>
- #include <boost/log/sources/logger.hpp>
- #include <boost/log/sources/record_ostream.hpp>
- #include <boost/log/attributes/scoped_attribute.hpp>
- namespace logging = boost::log;
- namespace src = boost::log::sources;
- namespace expr = boost::log::expressions;
- namespace sinks = boost::log::sinks;
- namespace keywords = boost::log::keywords;
- //[ example_sinks_multifile
- void init_logging()
- {
- boost::shared_ptr< logging::core > core = logging::core::get();
- boost::shared_ptr< sinks::text_multifile_backend > backend =
- boost::make_shared< sinks::text_multifile_backend >();
- // Set up the file naming pattern
- backend->set_file_name_composer
- (
- sinks::file::as_file_name_composer(expr::stream << "logs/" << expr::attr< std::string >("RequestID") << ".log")
- );
- // Wrap it into the frontend and register in the core.
- // The backend requires synchronization in the frontend.
- typedef sinks::synchronous_sink< sinks::text_multifile_backend > sink_t;
- boost::shared_ptr< sink_t > sink(new sink_t(backend));
- // Set the formatter
- sink->set_formatter
- (
- expr::stream
- << "[RequestID: " << expr::attr< std::string >("RequestID")
- << "] " << expr::smessage
- );
- core->add_sink(sink);
- }
- //]
- void logging_function()
- {
- src::logger lg;
- BOOST_LOG(lg) << "Hello, world!";
- }
- int main(int, char*[])
- {
- init_logging();
- {
- BOOST_LOG_SCOPED_THREAD_TAG("RequestID", "Request1");
- logging_function();
- }
- {
- BOOST_LOG_SCOPED_THREAD_TAG("RequestID", "Request2");
- logging_function();
- }
- return 0;
- }
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