Re: [Boost-users] init log with BOOST_LOG_INLINE_GLOBAL_LOGGER_DEFAULT

Hi Igor, Thanks for your help! Is that to say i MUST do other initialization when i use BOOST_LOG_INLINE_GLOBAL_LOGGER_DEFAULT ? Why does it initialized by boost::log::sources::severity_logger_mt ? Best Regards, Bill On 1/14/15, Igor Mironchik wrote:

Hi. You missed this:

BOOST_LOG_ATTRIBUTE_KEYWORD( severity, "Severity", severity_level ) BOOST_LOG_ATTRIBUTE_KEYWORD(timestamp, "TimeStamp", boost::posix_time::ptime)

using namespace boost::log;

void init_logging() { auto sink = boost::log::add_file_log ( "sample.log", keywords::format = expressions::stream << expressions::format_date_time( timestamp, "%Y-%m-%d, %H:%M:%S.%f" ) << " <" << severity.or_default(normal) << "> " << expressions::message );

// The sink will perform character code conversion as needed, according to the locale set with imbue() std::locale loc = boost::locale::generator()("en_US.UTF-8"); sink->imbue(loc);

// Let's add some commonly used attributes, like timestamp and record counter. boost::log::add_common_attributes(); }

On Wed, 14 Jan 2015 14:02:49 +0300, Bill Tian wrote:

...

Hi guys, I want to define a global logger that can be used in other place. The severity level always be "info". I init the log like this:

#include <cstdlib> #include #include #include #include #include #include

// Here we define our application severity levels. enum severity_level { normal, notification, warning, error, critical };

// The formatting logic for the severity level template< typename CharT, typename TraitsT > inline std::basic_ostream< CharT, TraitsT >& operator<< (std::basic_ostream< CharT, TraitsT >& strm, severity_level lvl) { static const char* const str[] = { "normal", "notification", "warning", "error", "critical" }; if (static_caststd::size_t(lvl) < (sizeof(str) / sizeof(*str))) strm << str[lvl]; else strm << static_cast<int>(lvl); return strm; }

// Global logger declaration BOOST_LOG_INLINE_GLOBAL_LOGGER_DEFAULT(test_lg, boost::log::sources::severity_logger_mt)

void try_logging() { boost::log::sources::severity_logger_mt& lg = test_lg::get();

// TODO: // always write "info" record, Unknown reason! BOOST_LOG_SEV(lg, normal) << "This is a normal severity record"; BOOST_LOG_SEV(lg, notification) << "This is a notification severity record"; BOOST_LOG_SEV(lg, warning) << "This is a warning severity record"; BOOST_LOG_SEV(lg, error) << "This is a error severity record"; BOOST_LOG_SEV(lg, critical) << "This is a critical severity record"; }

int main(int argc, char* argv[]) { try_logging();

return EXIT_SUCCESS; }

In the log i got this: [2015-01-14 19:00:34.800935] [0x40000300] [info] This is a normal severity re cord [2015-01-14 19:00:34.805935] [0x40000300] [info] This is a notification sever ity record [2015-01-14 19:00:34.806935] [0x40000300] [info] This is a warning severity r ecord [2015-01-14 19:00:34.806935] [0x40000300] [info] This is a error severity rec ord [2015-01-14 19:00:34.806935] [0x40000300] [info] This is a critical severity record

What do i miss? Thank you!

Bill

-- Best Regards, Igor Mironchik.