Function SendPrometheusError

lib/httpserver/prometheus.go:13–29

SendPrometheusError sends err to w in Prometheus querying API response format. See https://prometheus.io/docs/prometheus/latest/querying/api/#format-overview for more details

(w http.ResponseWriter, r *http.Request, err error)

//
// See https://prometheus.io/docs/prometheus/latest/querying/api/#format-overview for more details
func SendPrometheusError(w http.ResponseWriter, r *http.Request, err error) {
	logger.WarnfSkipframes(1, "error in %q: %s", GetRequestURI(r), err)

	w.Header().Set("Content-Type", "application/json")
	statusCode := http.StatusUnprocessableEntity
	var esc *ErrorWithStatusCode
	if errors.As(err, &esc) {
		statusCode = esc.StatusCode
	}
	w.WriteHeader(statusCode)

	var ure *UserReadableError
	if errors.As(err, &ure) {
		err = ure
	}
	WritePrometheusErrorResponse(w, statusCode, err)
}

// UserReadableError is a type of error which supposed to be returned to the user without additional context.
type UserReadableError struct {