add flag for lowercase resourceids

Signed-off-by: Markus Blaschke <[email protected]>

config/opts.go

@@ -24,6 +24,10 @@ type (
 			ResourceTags  []string `long:"azure.resource-tag"      env:"AZURE_RESOURCE_TAG"        env-delim:" "  description:"Azure Resource tags"                              default:"owner"`
 		}
 
+		Metrics struct {
+			ResourceIdLowercase bool `long:"metrics.resourceid.lowercase"   env:"METRIC_RESOURCEID_LOWERCASE"       description:"Publish lowercase Azure Resoruce ID in metrics"`
+		}
+
 		// scrape times
 		Scrape struct {
 			Time time.Duration `long:"scrape.time"                    env:"SCRAPE_TIME"                    description:"Default scrape time (time.duration)"                      default:"5m"`

metrics_keyvault.go

@@ -11,6 +11,7 @@ import (
 	"github.com/prometheus/client_golang/prometheus"
 	log "github.com/sirupsen/logrus"
 	prometheusCommon "github.com/webdevops/go-prometheus-common"
+	"strings"
 	"sync"
 	"time"
 )
@@ -260,7 +261,11 @@ func (m *MetricsCollectorKeyvault) collectKeyvault(ctx context.Context, logger *
 	vaultCertificateStatusMetrics := prometheusCommon.NewMetricsList()
 
 	vaultUrl := to.String(vault.Properties.VaultURI)
+
 	vaultResourceId := to.String(vault.ID)
+	if opts.Metrics.ResourceIdLowercase {
+		vaultResourceId = strings.ToLower(vaultResourceId)
+	}
 	vaultName := to.String(vault.Name)
 
 	entrySecretsCount := float64(0)