external: fix ipv6 monitoring endpoint reconcile

currently the extraction ipv6 was not correct
used the net package to extract the host ip from
the ipadress

Signed-off-by: parth-gr <partharora1010@gmail.com>
(cherry picked from commit e1873cb2e7)

pkg/operator/ceph/controller/spec.go

@@ -21,6 +21,7 @@ import (
 	"context"
 	"encoding/binary"
 	"fmt"
+	"net"
 	"os"
 	"path"
 	"reflect"
@@ -954,7 +955,12 @@ func ConfigureExternalMetricsEndpoint(ctx *clusterd.Context, monitoringSpec ceph
 }
 
 func extractMgrIP(rawActiveAddr string) string {
-	return strings.Split(rawActiveAddr, ":")[0]
+	host, _, err := net.SplitHostPort(rawActiveAddr)
+	if err != nil {
+		// If there's no port, return as is
+		return rawActiveAddr
+	}
+	return host
 }
 
 func GetContainerImagePullPolicy(containerImagePullPolicy v1.PullPolicy) v1.PullPolicy {

pkg/operator/ceph/controller/spec_test.go

@@ -259,6 +259,22 @@ func TestExtractMgrIP(t *testing.T) {
 	activeMgrRaw := "172.17.0.12:6801/2535462469"
 	ip := extractMgrIP(activeMgrRaw)
 	assert.Equal(t, "172.17.0.12", ip)
+
+	activeMgrRaw = "[2001:db8::1]:6801/2535462469"
+	ip = extractMgrIP(activeMgrRaw)
+	assert.Equal(t, "2001:db8::1", ip)
+
+	activeMgrRaw = "invalid-address"
+	ip = extractMgrIP(activeMgrRaw)
+	assert.Equal(t, activeMgrRaw, ip)
+
+	activeMgrRaw = ""
+	ip = extractMgrIP(activeMgrRaw)
+	assert.Equal(t, "", ip)
+
+	activeMgrRaw = "172.17.0.12"
+	ip = extractMgrIP(activeMgrRaw)
+	assert.Equal(t, activeMgrRaw, ip)
 }
 
 func TestConfigureExternalMetricsEndpoint(t *testing.T) {