Fix expected queries after upgrading Prometheus

This changes mostly the `sum by(grouping)` to `sum by (grouping)`.

Author: metalmatze

kubernetes/controllers/servicelevelobjective_test.go

@@ -89,7 +89,7 @@ func Test_makePrometheusRule(t *testing.T) {
 							Rules: []monitoringv1.Rule{
 								{
 									Record: "http_requests:increase4w",
-									Expr:   intstr.FromString(`sum by(status) (increase(http_requests_total{job="app"}[4w]))`),
+									Expr:   intstr.FromString(`sum by (status) (increase(http_requests_total{job="app"}[4w]))`),
 									Labels: map[string]string{
 										"job":  "app",
 										"slo":  "http",
@@ -200,7 +200,7 @@ func Test_makeConfigMap(t *testing.T) {
 - interval: 2m30s
   name: http-increase
   rules:
-  - expr: sum by(status) (increase(http_requests_total{job="app"}[4w]))
+  - expr: sum by (status) (increase(http_requests_total{job="app"}[4w]))
     labels:
       job: app
       slo: http

slo/promql.go

@@ -85,7 +85,7 @@ func (o Objective) QueryErrors(window model.Duration) string {
 	}
 
 	if o.Indicator.Latency != nil && o.Indicator.Latency.Total.Name != "" {
-		expr, err := parser.ParseExpr(`sum by(grouping) (metric{matchers="total"}) - sum by(grouping) (errorMetric{matchers="errors"})`)
+		expr, err := parser.ParseExpr(`sum by (grouping) (metric{matchers="total"}) - sum by (grouping) (errorMetric{matchers="errors"})`)
 		if err != nil {
 			return ""
 		}
@@ -394,7 +394,7 @@ func (r objectiveReplacer) replace(node parser.Node) {
 
 func (o Objective) RequestRange(timerange time.Duration) string {
 	if o.Indicator.Ratio != nil && o.Indicator.Ratio.Total.Name != "" {
-		expr, err := parser.ParseExpr(`sum by(group) (rate(metric{}[1s])) > 0`)
+		expr, err := parser.ParseExpr(`sum by (group) (rate(metric{}[1s])) > 0`)
 		if err != nil {
 			return err.Error()
 		}
@@ -433,7 +433,7 @@ func (o Objective) RequestRange(timerange time.Duration) string {
 
 func (o Objective) ErrorsRange(timerange time.Duration) string {
 	if o.Indicator.Ratio != nil && o.Indicator.Ratio.Total.Name != "" {
-		expr, err := parser.ParseExpr(`sum by(group) (rate(errorMetric{matchers="errors"}[1s])) / scalar(sum(rate(metric{matchers="total"}[1s]))) > 0`)
+		expr, err := parser.ParseExpr(`sum by (group) (rate(errorMetric{matchers="errors"}[1s])) / scalar(sum(rate(metric{matchers="total"}[1s]))) > 0`)
 		if err != nil {
 			return err.Error()
 		}
@@ -477,7 +477,7 @@ func (o Objective) DurationRange(timerange time.Duration, percentile float64) st
 	}
 
 	if o.Indicator.Latency != nil && o.Indicator.Latency.Total.Name != "" {
-		expr, err := parser.ParseExpr(`histogram_quantile(0.420, sum by(le) (rate(errorMetric{matchers="errors"}[1s])))`)
+		expr, err := parser.ParseExpr(`histogram_quantile(0.420, sum by (le) (rate(errorMetric{matchers="errors"}[1s])))`)
 		if err != nil {
 			return err.Error()
 		}