Fix metricsPath error (#25)

go.sum

@@ -384,6 +384,7 @@ github.com/operator-framework/operator-registry v1.0.4/go.mod h1:hve6YwcjM2nGVls
 github.com/operator-framework/operator-registry v1.1.1/go.mod h1:7D4WEwL+EKti5npUh4/u64DQhawCBRugp8Ql20duUb4=
 github.com/operator-framework/operator-sdk v0.12.0 h1:9eAD1L8e6pPCpFCAacBUVf2eloDkRuVm29GTCOktLqQ=
 github.com/operator-framework/operator-sdk v0.12.0/go.mod h1:mW8isQxiXlLCVf2E+xqflkQAVLOTbiqjndKdkKIrR0M=
+github.com/operator-framework/operator-sdk v0.16.0 h1:+D61x7FjcITLzjVakzfzz5hqkkMDR+uEDMzXfyVZOw8=
 github.com/pborman/uuid v1.2.0/go.mod h1:X/NO0urCmaxf9VXbdlT7C2Yzkj2IKimNn4k+gtPdI/k=
 github.com/pelletier/go-toml v1.0.1/go.mod h1:5z9KED0ma1S8pY6P1sdut58dfprrGBbd/94hg7ilaic=
 github.com/pelletier/go-toml v1.2.0/go.mod h1:5z9KED0ma1S8pY6P1sdut58dfprrGBbd/94hg7ilaic=

pkg/metrics/builder.go

@@ -1,6 +1,10 @@
 package metrics
 
-import "github.com/prometheus/client_golang/prometheus"
+import (
+	"strings"
+
+	"github.com/prometheus/client_golang/prometheus"
+)
 
 // Default variables for metrics-path and metrics-port.
 const (
@@ -39,6 +43,9 @@ func (b *metricsConfigBuilder) WithPort(port string) *metricsConfigBuilder {
 
 // WithPath updates the metrics path to the value provided by the user.
 func (b *metricsConfigBuilder) WithPath(path string) *metricsConfigBuilder {
+	if !strings.HasPrefix(path, "/") {
+		path = "/" + path
+	}
 	b.config.metricsPath = path
 	return b
 }

pkg/metrics/service.go

@@ -18,6 +18,7 @@ import (
 	"context"
 	"fmt"
 	"strconv"
+	"strings"
 
 	monitoringv1 "github.com/coreos/prometheus-operator/pkg/apis/monitoring/v1"
 	routev1 "github.com/openshift/api/route/v1"
@@ -38,6 +39,11 @@ var (
 
 // GenerateService returns the static service at specified port
 func GenerateService(port int32, portName string, serviceName string) (*v1.Service, error) {
+
+	// check if portname starts with "/"
+	if strings.HasPrefix(portName, "/") {
+		portName = portName[1:]
+	}
 	operatorName, err := k8sutil.GetOperatorName()
 	if err != nil {
 		return nil, err