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log.go
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/
log.go
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package m2mplog
import (
"flag"
"fmt"
logging "github.com/op/go-logging"
"log"
"os"
)
var Level int
var NoColor bool
var logger *logging.Logger
const LOG_FLAGS = log.Ldate | log.Ltime | log.Lmicroseconds | log.Lshortfile
func GetLogger() *logging.Logger {
if logger == nil {
logging.SetFormatter(logging.MustStringFormatter("▶ %{level:.1s} 0x%{id:x} %{message}"))
stdoutBackend := logging.NewLogBackend(os.Stdout, "", LOG_FLAGS)
stdoutBackend.Color = !NoColor
stdoutBackendLeveled := logging.AddModuleLevel(stdoutBackend)
stdoutBackendLeveled.SetLevel(logging.Level(Level), "")
logger = logging.MustGetLogger("m2log")
logging.SetBackend(stdoutBackendLeveled)
log.SetFlags(LOG_FLAGS)
}
return logger
}
func GetLoggerAgain() *logging.Logger {
logger = nil
return GetLogger()
}
func init() {
flag.BoolVar(&NoColor, "log-nocolor", false, "Do not use color for stdout logging")
flag.IntVar(&Level, "log-level", int(logging.INFO), fmt.Sprintf("Log level (NOTICE=%d, INFO=%d, DEBUG=%d)", logging.NOTICE, logging.INFO, logging.DEBUG))
logger = nil
}