// SetupLogging will initialize the logger backend and set the flags.
func SetupLogging(w io.Writer) {
if w != nil {
Underlying.Out = io.MultiWriter(os.Stderr, w)
}
if runtime.GOOS == "windows" { // colored ttys are rare on windows...
Underlying.Formatter = &logrus.TextFormatter{DisableColors: true}
}
if lvl := os.Getenv("CRYPTIX_LOGLVL"); lvl != "" {
l, err := logrus.ParseLevel(lvl)
if err != nil {
logrus.Errorf("logging: could not parse lvl from env, defaulting to debug: %s", err)
l = logrus.DebugLevel
}
Underlying.Level = l
}
}
// CheckFatal exits the process if err != nil
func CheckFatal(err error) {
if err != nil {
pc, file, line, ok := runtime.Caller(1)
if !ok {
file = "?"
line = 0
}
fn := runtime.FuncForPC(pc)
var fnName string
if fn == nil {
fnName = "?()"
} else {
dotName := filepath.Ext(fn.Name())
fnName = strings.TrimLeft(dotName, ".") + "()"
}
logrus.Errorf("%s:%d %s", file, line, fnName)
logrus.Error("Fatal Error:", errgo.Details(err))
if closeChan != nil {
logrus.Warn("Sending close message")
closeChan <- os.Interrupt
}
os.Exit(1)
}
}