manifests: Enable query log file config for Prometheus

Prometheus and via prometheus-operator, provide the ability to
log all PromQL queries to a file.

This change enables CMO to support passing through that feature
to Prometheus CR and the Prometheus pod for both platform
monitoring and UWM.

https://prometheus.io/docs/guides/query-log/

Author: philipgough

pkg/manifests/config.go

@@ -177,6 +177,7 @@ type PrometheusK8sConfig struct {
 	RemoteWrite         []RemoteWriteSpec                    `json:"remoteWrite"`
 	TelemetryMatches    []string                             `json:"-"`
 	AlertmanagerConfigs []AdditionalAlertmanagerConfig       `json:"additionalAlertmanagerConfigs"`
+	QueryLogFile        string                               `json:"queryLogFile"`
 }
 
 type AdditionalAlertmanagerConfig struct {
@@ -494,6 +495,7 @@ type PrometheusRestrictedConfig struct {
 	EnforcedSampleLimit *uint64                              `json:"enforcedSampleLimit"`
 	EnforcedTargetLimit *uint64                              `json:"enforcedTargetLimit"`
 	AlertmanagerConfigs []AdditionalAlertmanagerConfig       `json:"additionalAlertmanagerConfigs"`
+	QueryLogFile        string                               `json:"queryLogFile"`
 }
 
 func (u *UserWorkloadConfiguration) applyDefaults() {

pkg/manifests/manifests.go

@@ -1281,6 +1281,10 @@ func (f *Factory) PrometheusK8s(host string, grpcTLS *v1.Secret, trustedCABundle
 		}
 	}
 
+	if f.config.ClusterMonitoringConfiguration.PrometheusK8sConfig.QueryLogFile != "" {
+		p.Spec.QueryLogFile = f.config.ClusterMonitoringConfiguration.PrometheusK8sConfig.QueryLogFile
+	}
+
 	telemetryEnabled := f.config.ClusterMonitoringConfiguration.TelemeterClientConfig.IsEnabled()
 	if telemetryEnabled && f.config.RemoteWrite {
 
@@ -1574,6 +1578,10 @@ func (f *Factory) PrometheusUserWorkload(grpcTLS *v1.Secret) (*monv1.Prometheus,
 		p.Spec.Thanos.Image = &f.config.Images.Thanos
 	}
 
+	if f.config.UserWorkloadConfiguration.Prometheus.QueryLogFile != "" {
+		p.Spec.QueryLogFile = f.config.UserWorkloadConfiguration.Prometheus.QueryLogFile
+	}
+
 	for i, container := range p.Spec.Containers {
 		if container.Name == "kube-rbac-proxy" || container.Name == "kube-rbac-proxy-thanos" {
 			p.Spec.Containers[i].Image = f.config.Images.KubeRbacProxy
@@ -2166,21 +2174,21 @@ type GrafanaDatasources struct {
 }
 
 type SecureJSONData struct {
-	BasicAuthPassword string           `json:"basicAuthPassword"`
+	BasicAuthPassword string `json:"basicAuthPassword"`
 }
 
 type GrafanaDatasource struct {
-	Access            string           `json:"access"`
-	BasicAuth         bool             `json:"basicAuth"`
-	SecureJSONData    SecureJSONData   `json:"secureJsonData"`
-	BasicAuthUser     string           `json:"basicAuthUser"`
-	Editable          bool             `json:"editable"`
-	JsonData          *GrafanaJsonData `json:"jsonData"`
-	Name              string           `json:"name"`
-	OrgId             int              `json:"orgId"`
-	Type              string           `json:"type"`
-	Url               string           `json:"url"`
-	Version           int              `json:"version"`
+	Access         string           `json:"access"`
+	BasicAuth      bool             `json:"basicAuth"`
+	SecureJSONData SecureJSONData   `json:"secureJsonData"`
+	BasicAuthUser  string           `json:"basicAuthUser"`
+	Editable       bool             `json:"editable"`
+	JsonData       *GrafanaJsonData `json:"jsonData"`
+	Name           string           `json:"name"`
+	OrgId          int              `json:"orgId"`
+	Type           string           `json:"type"`
+	Url            string           `json:"url"`
+	Version        int              `json:"version"`
 }
 
 type GrafanaJsonData struct {

pkg/manifests/manifests_test.go

@@ -948,6 +948,7 @@ func TestPrometheusK8sConfiguration(t *testing.T) {
     datacenter: eu-west
   remoteWrite:
   - url: "https://test.remotewrite.com/api/write"
+  queryLogFile: /tmp/test
 ingress:
   baseAddress: monitoring-demo.staging.core-os.net
 `)
@@ -1053,6 +1054,10 @@ ingress:
 	if p.Spec.RemoteWrite[0].URL != "https://test.remotewrite.com/api/write" {
 		t.Fatal("Prometheus remote-write is not configured correctly")
 	}
+
+	if p.Spec.QueryLogFile != "/tmp/test" {
+		t.Fatal("Prometheus query logis not configured correctly")
+	}
 }
 
 func TestPrometheusK8sAdditionalAlertManagerConfigsSecret(t *testing.T) {