Workaround to get managed subnets working again

api/v1beta2/network_types.go

@@ -307,7 +307,7 @@ func (v *VPCSpec) IsIPv6Enabled() bool {
 // SubnetSpec configures an AWS Subnet.
 type SubnetSpec struct {
 	// ID defines a unique identifier to reference this resource.
-	ID string `json:"id"`
+	ID string `json:"id,omitempty"`
 
 	// CidrBlock is the CIDR block to be used when the provider creates a managed VPC.
 	CidrBlock string `json:"cidrBlock,omitempty"`
@@ -349,8 +349,6 @@ func (s *SubnetSpec) String() string {
 }
 
 // Subnets is a slice of Subnet.
-// +listType=map
-// +listMapKey=id
 type Subnets []SubnetSpec
 
 // ToMap returns a map from id to subnet.
@@ -373,10 +371,12 @@ func (s Subnets) IDs() []string {
 }
 
 // FindByID returns a single subnet matching the given id or nil.
-func (s Subnets) FindByID(id string) *SubnetSpec {
-	for _, x := range s {
+//
+// The returned pointer can be used to write back into the original slice.
+func (s *Subnets) FindByID(id string) *SubnetSpec {
+	for i, x := range *s {
 		if x.ID == id {
-			return &x
+			return &(*s)[i] // pointer to original structure
 		}
 	}
 
@@ -386,10 +386,12 @@ func (s Subnets) FindByID(id string) *SubnetSpec {
 // FindEqual returns a subnet spec that is equal to the one passed in.
 // Two subnets are defined equal to each other if their id is equal
 // or if they are in the same vpc and the cidr block is the same.
-func (s Subnets) FindEqual(spec *SubnetSpec) *SubnetSpec {
-	for _, x := range s {
+//
+// The returned pointer can be used to write back into the original slice.
+func (s *Subnets) FindEqual(spec *SubnetSpec) *SubnetSpec {
+	for i, x := range *s {
 		if (spec.ID != "" && x.ID == spec.ID) || (spec.CidrBlock == x.CidrBlock) || (spec.IPv6CidrBlock != "" && spec.IPv6CidrBlock == x.IPv6CidrBlock) {
-			return &x
+			return &(*s)[i] // pointer to original structure
 		}
 	}
 	return nil

cmd/clusterawsadm/converters/cloudformation.go

@@ -17,6 +17,8 @@ limitations under the License.
 package converters
 
 import (
+	"sort"
+
 	"github.com/awslabs/goformation/v4/cloudformation/tags"
 
 	infrav1 "sigs.k8s.io/cluster-api-provider-aws/v2/api/v1beta2"
@@ -35,5 +37,8 @@ func MapToCloudFormationTags(src infrav1.Tags) []tags.Tag {
 		cfnTags = append(cfnTags, tag)
 	}
 
+	// Sort so that unit tests can expect a stable order
+	sort.Slice(cfnTags, func(i, j int) bool { return cfnTags[i].Key < cfnTags[j].Key })
+
 	return cfnTags
 }

config/crd/bases/controlplane.cluster.x-k8s.io_awsmanagedcontrolplanes.yaml

@@ -446,13 +446,8 @@ spec:
                           description: Tags is a collection of tags describing the
                             resource.
                           type: object
-                      required:
-                      - id
                       type: object
                     type: array
-                    x-kubernetes-list-map-keys:
-                    - id
-                    x-kubernetes-list-type: map
                   vpc:
                     description: VPC configuration.
                     properties:
@@ -1802,13 +1797,8 @@ spec:
                           description: Tags is a collection of tags describing the
                             resource.
                           type: object
-                      required:
-                      - id
                       type: object
                     type: array
-                    x-kubernetes-list-map-keys:
-                    - id
-                    x-kubernetes-list-type: map
                   vpc:
                     description: VPC configuration.
                     properties:

config/crd/bases/infrastructure.cluster.x-k8s.io_awsclusters.yaml

@@ -1173,13 +1173,8 @@ spec:
                           description: Tags is a collection of tags describing the
                             resource.
                           type: object
-                      required:
-                      - id
                       type: object
                     type: array
-                    x-kubernetes-list-map-keys:
-                    - id
-                    x-kubernetes-list-type: map
                   vpc:
                     description: VPC configuration.
                     properties:

config/crd/bases/infrastructure.cluster.x-k8s.io_awsclustertemplates.yaml

@@ -777,13 +777,8 @@ spec:
                                   description: Tags is a collection of tags describing
                                     the resource.
                                   type: object
-                              required:
-                              - id
                               type: object
                             type: array
-                            x-kubernetes-list-map-keys:
-                            - id
-                            x-kubernetes-list-type: map
                           vpc:
                             description: VPC configuration.
                             properties: