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
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.