143 lines
4.5 KiB
C++
143 lines
4.5 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 <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/attributes/constant.hpp>
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#include <boost/log/attributes/scoped_attribute.hpp>
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#include <boost/log/sources/channel_logger.hpp>
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#include <boost/log/sources/record_ostream.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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#include <boost/log/utility/manipulators/add_value.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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BOOST_LOG_ATTRIBUTE_KEYWORD(line_id, "LineID", unsigned int)
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BOOST_LOG_ATTRIBUTE_KEYWORD(channel, "Channel", std::string)
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BOOST_LOG_ATTRIBUTE_KEYWORD(remote_address, "RemoteAddress", std::string)
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BOOST_LOG_ATTRIBUTE_KEYWORD(received_size, "ReceivedSize", std::size_t)
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BOOST_LOG_ATTRIBUTE_KEYWORD(sent_size, "SentSize", std::size_t)
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//[ example_sources_network_connection_channels
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class network_connection
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{
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src::channel_logger< > m_net, m_stat;
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logging::attribute_set::iterator m_net_remote_addr, m_stat_remote_addr;
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public:
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network_connection() :
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// We can dump network-related messages through this logger
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// and be able to filter them later
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m_net(keywords::channel = "net"),
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// We also can separate statistic records in a different channel
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// in order to route them to a different sink
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m_stat(keywords::channel = "stat")
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{
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}
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void on_connected(std::string const& remote_addr)
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{
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// Add the remote address to both channels
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attrs::constant< std::string > addr(remote_addr);
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m_net_remote_addr = m_net.add_attribute("RemoteAddress", addr).first;
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m_stat_remote_addr = m_stat.add_attribute("RemoteAddress", addr).first;
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// Put message to the "net" channel
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BOOST_LOG(m_net) << "Connection established";
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}
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void on_disconnected()
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{
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// Put message to the "net" channel
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BOOST_LOG(m_net) << "Connection shut down";
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// Remove the attribute with the remote address
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m_net.remove_attribute(m_net_remote_addr);
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m_stat.remove_attribute(m_stat_remote_addr);
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}
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void on_data_received(std::size_t size)
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{
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BOOST_LOG(m_stat) << logging::add_value("ReceivedSize", size) << "Some data received";
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}
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void on_data_sent(std::size_t size)
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{
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BOOST_LOG(m_stat) << logging::add_value("SentSize", size) << "Some data sent";
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}
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};
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//]
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int main(int, char*[])
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{
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// Construct the sink for the "net" channel
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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 >("net.log"));
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sink->set_formatter
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(
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expr::stream << line_id << ": [" << remote_address << "] " << expr::smessage
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);
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sink->set_filter(channel == "net");
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logging::core::get()->add_sink(sink);
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// Construct the sink for the "stat" channel
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sink = boost::make_shared< text_sink >();
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sink->locked_backend()->add_stream(
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boost::make_shared< std::ofstream >("stat.log"));
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sink->set_formatter
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(
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expr::stream
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<< remote_address
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<< expr::if_(expr::has_attr(received_size))
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[
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expr::stream << " -> " << received_size << " bytes: "
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]
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<< expr::if_(expr::has_attr(sent_size))
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[
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expr::stream << " <- " << sent_size << " bytes: "
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]
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<< expr::smessage
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);
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sink->set_filter(channel == "stat");
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logging::core::get()->add_sink(sink);
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// Register other common attributes, such as time stamp and record counter
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logging::add_common_attributes();
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// Emulate network activity
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network_connection conn;
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conn.on_connected("11.22.33.44");
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conn.on_data_received(123);
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conn.on_data_sent(321);
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conn.on_disconnected();
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return 0;
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}
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