to use, write in main:

defer xlog.Flush()
xlog.Init(tmConfig.GetString("xlog_dir"), tmConfig.GetInt("ann_logger_level"))
xlog.Info("start...")

default logfiles are:

xlog.Info -> annlog.log
xlog.Dbg -> annlog.dbg
xlog.Err -> annlog.err

err dump dup to *.log

view running log:

tail -f ./<xlog_dir>/annlog.log