Include HTTP status code in Prometheus error responses

rohansood10 · rohansood10 · commit 6a0096302f5a · 2026-02-19T03:11:46.000-08:00
When Prometheus returns an HTTP error (4xx/5xx), the error message now includes the status code and reason phrase. Previously, only the response body was shown, which made it difficult to diagnose issues like HTTP 403 errors caused by missing authorization policies. Fixes #1434 Signed-off-by: rohansood10 <rohansood10@users.noreply.github.com>
diff --git a/pkg/metrics/providers/prometheus.go b/pkg/metrics/providers/prometheus.go
@@ -143,7 +143,7 @@ func (p *PrometheusProvider) RunQuery(query string) (float64, error) {
 	}
 
 	if 400 <= r.StatusCode {
-		return 0, fmt.Errorf("error response: %s", string(b))
+		return 0, fmt.Errorf("error response: Status %d %s: %s", r.StatusCode, http.StatusText(r.StatusCode), string(b))
 	}
 
 	var result prometheusResponse

Original file line number	Diff line number	Diff line change
`@@ -143,7 +143,7 @@ func (p *PrometheusProvider) RunQuery(query string) (float64, error) {`
`143`	`143`	`}`
`144`	`144`
`145`	`145`	`if 400 <= r.StatusCode {`
`146`		`- return 0, fmt.Errorf("error response: %s", string(b))`
	`146`	`+ return 0, fmt.Errorf("error response: Status %d %s: %s", r.StatusCode, http.StatusText(r.StatusCode), string(b))`
`147`	`147`	`}`
`148`	`148`
`149`	`149`	`var result prometheusResponse`