Boost Global Logger How to write stream to a file

[pdlarue]

I am using the BOOST_LOG_GLOBAL_LOGGER_INIT template to set up my global logger. Here is the code:

HEADER

#include <boost/log/expressions.hpp>
#include <boost/log/sources/global_logger_storage.hpp>
#include <boost/log/support/date_time.hpp>
#include <boost/log/trivial.hpp>
#include <boost/log/utility/setup.hpp>
#include <boost/log/utility/setup/file.hpp>

#define INFO  BOOST_LOG_SEV(my_logger::get(), boost::log::trivial::info)
#define WARN  BOOST_LOG_SEV(my_logger::get(), boost::log::trivial::warning)
#define ERROR BOOST_LOG_SEV(my_logger::get(), boost::log::trivial::error)

#define SYS_LOGFILE             "/var/log/example.log"
#define APP_LOGFILE             "/home/pdl/ClionProjects/WrokingLogger/example.log"

namespace attrs   = boost::log::attributes;
namespace expr    = boost::log::expressions;
namespace logging = boost::log;

//Narrow-char thread-safe logger.
typedef boost::log::sources::severity_logger_mt<boost::log::trivial::severity_level> logger_t;

//declares a global logger with a custom initialization
BOOST_LOG_GLOBAL_LOGGER(logger, logger_t)

CPP

#include "GlobalLogger.h"

//Defines a global logger initialization routine
BOOST_LOG_GLOBAL_LOGGER_INIT(logger, logger_t)
{
    logger_t lg;

    logging::add_common_attributes();

    //logging::add_file_log("sample.log");
    logging::add_file_log(
            boost::log::keywords::file_name = APP_LOGFILE,
            boost::log::keywords::format = (
                    expr::stream << expr::format_date_time<     boost::posix_time::ptime >("TimeStamp", "%Y-%m-%d %H:%M:%S")
                    << " [" << expr::attr<     boost::log::trivial::severity_level >("Severity") << "]: "
                    << expr::smessage
            )
    );

    logging::add_console_log(
            std::cout,
            boost::log::keywords::format = (
                    expr::stream << expr::format_date_time<     boost::posix_time::ptime >("TimeStamp", "%Y-%m-%d %H:%M:%S")
                    << " [" << expr::attr<     boost::log::trivial::severity_level >("Severity") << "]: "
                    << expr::smessage
            )
    );

    logging::core::get()->set_filter
            (
                    logging::trivial::severity > logging::trivial::info
            );

    return lg;
}

main.cpp

#include <iostream>

#include "GlobalLogger.h"

using namespace std;

int main() {
    boost::log::sources::severity_logger_mt<boost::log::trivial::severity_level>& lg = logger::get();

    BOOST_LOG_SEV(lg, boost::log::trivial::info) << "info";
    BOOST_LOG_SEV(lg, boost::log::trivial::warning) << "warning";
    BOOST_LOG_SEV(lg, boost::log::trivial::error) << "error";
    BOOST_LOG_SEV(lg, boost::log::trivial::fatal) << "fatal";

    return 0;
}

This code is writing to the console perfectly but it's not writing to the file. Looking at the tutorial for writing to a file shows this snippet of code:

    logging::record rec = lg.open_record();
    if (rec)
    {
        logging::record_ostream strm(rec);
        strm << "Hello, World!";
        strm.flush();
        lg.push_record(boost::move(rec));
    }

The full example code is located here: http://www.boost.org/doc/libs/1_54_0/libs/log/example/doc/tutorial_logging.cpp

My BIG question is where to I put that code? Ideally I want the stream to be set up in the BOOST_LOG_GLOBAL_LOGGER_INIT template method. Can I do this? If yes, any examples of how to do this?

[pdlarue]

Andrey:

Can you delete this post? I got it working.

Thank you.