Function handleError

modules/querier/http.go:384–403

(w http.ResponseWriter, err error)

}

func handleError(w http.ResponseWriter, err error) {
	if err == nil {
		return
	}

	if errors.Is(err, context.Canceled) {
		// todo: context is also canceled when we hit the query timeout. research what the behavior is
		// ignore this error. we regularly cancel context once queries are complete
		return
	}

	// TODO: better understand all errors returned from queriers and categorize more as 4XX
	// NOTE: we receive a GRPC error from the ingesters, and so we need to check the string content of error as well.
	if errors.Is(err, trace.ErrTraceTooLarge) || strings.Contains(err.Error(), trace.ErrTraceTooLarge.Error()) {
		http.Error(w, err.Error(), http.StatusUnprocessableEntity)
		return
	}

	http.Error(w, err.Error(), http.StatusInternalServerError)
}

func writeFormattedContentForRequest(w http.ResponseWriter, req *http.Request, m proto.Message, span oteltrace.Span) {
	// Check for both explicit nil and typed nil pointers (e.g., (*tempopb.SearchResponse)(nil))