func (l *Logger) Initialize(logOut string, lvl interface{}) error {
var (
level log.Lvl
err error
)
if l.Context == "" {
r := rand.New(rand.NewSource(time.Now().UnixNano()))
randInt := r.Int()
t := time.Now()
l.Context = fmt.Sprintf("%s#%d", t.Format(time.RFC3339), randInt)
}
if str, ok := lvl.(string); ok {
level, err = log.LvlFromString(str)
if err != nil {
return err
}
} else {
level = lvl.(log.Lvl)
}
l.Logger = log.New(log.Ctx{"context": l.Context})
l.Level = level
if logOut == "STDOUT" {
normalHandler := log.LvlFilterHandler(level, log.StdoutHandler)
errorHandler := log.LvlFilterHandler(level, log.CallerStackHandler("%+v", log.StdoutHandler))
handler := errorMultiHandler(normalHandler, errorHandler)
l.SetHandler(handler)
} else if logOut == "NONE" {
l.SetHandler(log.DiscardHandler())
} else {
fileHandler := log.Must.FileHandler(logOut, log.LogfmtFormat())
normalHandler := log.LvlFilterHandler(level, fileHandler)
errorHandler := log.LvlFilterHandler(level, log.CallerStackHandler("%+v", fileHandler))
handler := errorMultiHandler(normalHandler, errorHandler)
l.SetHandler(handler)
}
return nil
}
func setSettings(level int, filename string) {
logFilename = filename
debug = level
filehandler := log.Must.FileHandler(filename, log.LogfmtFormat())
handler := log.MultiHandler(
filehandler,
log.StreamHandler(os.Stderr, log.TerminalFormat()))
if debug > 1 {
handler = log.CallerStackHandler("%+v", handler)
} else {
handler = log.CallerFileHandler(handler)
}
if debug < 1 {
handler = log.LvlFilterHandler(log.LvlInfo, handler)
}
log.Root().SetHandler(handler)
log.Info("Logging started", "level", debug, "log_file", logFilename)
}