OCM-1308 | fix: filter empty subnet id

cmd/create/cluster/cmd.go

@@ -2058,9 +2058,9 @@ func run(cmd *cobra.Command, _ []string) {
 	}
 
 	// Subnet IDs
-	subnetIDs := args.subnetIDs
+	subnetIDs := helper.FilterEmptyStrings(args.subnetIDs)
 	subnetsProvided := len(subnetIDs) > 0
-	r.Reporter.Debugf("Received the following subnetIDs: %v", args.subnetIDs)
+	r.Reporter.Debugf("Received the following subnetIDs: %v", subnetIDs)
 	// If the user has set the availability zones (allowed for non-BYOVPC clusters), don't prompt the BYOVPC message
 	if !useExistingVPC && !subnetsProvided && !isAvailabilityZonesSet && interactive.Enabled() {
 		existingVPCHelp := "To install into an existing VPC you need to ensure that your VPC is configured " +
@@ -2092,7 +2092,7 @@ func run(cmd *cobra.Command, _ []string) {
 	var subnets []ec2types.Subnet
 	mapSubnetIDToSubnet := make(map[string]aws.Subnet)
 	if useExistingVPC || subnetsProvided {
-		initialSubnets, err := getInitialValidSubnets(awsClient, args.subnetIDs, r.Reporter)
+		initialSubnets, err := getInitialValidSubnets(awsClient, subnetIDs, r.Reporter)
 		if err != nil {
 			r.Reporter.Errorf("Failed to get the list of subnets: %s", err)
 			os.Exit(1)
@@ -2205,7 +2205,7 @@ func run(cmd *cobra.Command, _ []string) {
 			}
 		}
 
-		// Validate subnets in the case the user has provided them using the `args.subnets`
+		// Validate subnets in the case the user has provided them using the `args.subnetIDs`
 		if useExistingVPC || subnetsProvided {
 			if !isHostedCP {
 				err = ocm.ValidateSubnetsCount(multiAZ, privateLink, len(subnetIDs))

pkg/helper/helpers.go

@@ -258,3 +258,13 @@ func ChunkSlice[T any](slice []T, chunkSize int) [][]T {
 func IsBYOVPC(cluster *cmv1.Cluster) bool {
 	return len(cluster.AWS().SubnetIDs()) > 0
 }
+
+func FilterEmptyStrings(strings []string) []string {
+	var filteredResult []string
+	for _, str := range strings {
+		if str != "" {
+			filteredResult = append(filteredResult, str)
+		}
+	}
+	return filteredResult
+}

pkg/helper/helpers_test.go

@@ -157,5 +157,13 @@ var _ = Describe("Helper", func() {
 				Entry("Uses the first 27 characters of the cluster name when the cluster name is > 27 chars",
 					strings.Repeat("a", 54), strings.Repeat("a", 27)))
 		})
+
+		var _ = Context("FilterEmptyStrings()", func() {
+			It("OK: get filters subnets", func() {
+				subnets := []string{"test1", "test2", ""}
+				filteredSubnets := FilterEmptyStrings(subnets)
+				Expect(filteredSubnets).To(Equal([]string{"test1", "test2"}))
+			})
+		})
 	})
 })