feat: add support for MachinePool

Dockerfile

@@ -15,6 +15,8 @@ COPY main.go main.go
 COPY api/ api/
 COPY controllers/ controllers/
 COPY cloud/ cloud/
+COPY exp/ exp/
+COPY feature/ feature/
 COPY vendor/ vendor/
 
 # Build

Makefile

@@ -54,6 +54,9 @@ IMG ?= controller:latest
 # Produce CRDs that work back to Kubernetes 1.11 (no version conversion)
 CRD_OPTIONS ?= "crd"
 
+# enable machine pool feature
+EXP_MACHINE_POOL ?= false
+
 # Set build time variables including version details
 LDFLAGS := $(shell source ./hack/version.sh; version::ldflags)
 
@@ -91,10 +94,14 @@ help: ## Display this help.
 ##@ Development
 
 manifests: controller-gen ## Generate WebhookConfiguration, ClusterRole and CustomResourceDefinition objects.
-	$(CONTROLLER_GEN) $(CRD_OPTIONS) rbac:roleName=manager-role webhook paths="./api/..." output:crd:artifacts:config=config/crd/bases
+	$(CONTROLLER_GEN) $(CRD_OPTIONS) \
+		rbac:roleName=manager-role webhook \
+		paths="./api/..." \
+		paths="./exp/api/..." \
+		output:crd:artifacts:config=config/crd/bases
 
 generate: controller-gen ## Generate code containing DeepCopy, DeepCopyInto, and DeepCopyObject method implementations.
-	$(CONTROLLER_GEN) object:headerFile="hack/boilerplate.go.txt" paths="./api/..."
+	$(CONTROLLER_GEN) object:headerFile="hack/boilerplate.go.txt" paths="./api/..." paths="./exp/api/..."
 
 fmt: ## Run go fmt against code.
 	go fmt ./...
@@ -115,7 +122,7 @@ build: generate fmt vet ## Build manager binary.
 	CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build -ldflags "${LDFLAGS} -extldflags '-static'" -o bin/manager .
 
 run: manifests generate fmt vet ## Run a controller from your host.
-	go run ./main.go
+	go run ./main.go --feature-gates=MachinePool=${EXP_MACHINE_POOL}
 
 ## --------------------------------------
 ## Linting

api/v1beta1/ocicluster_types.go

@@ -71,6 +71,11 @@ type OCIClusterStatus struct {
 	// +optional
 	FailureDomains clusterv1.FailureDomains `json:"failureDomains,omitempty"`
 
+	// AvailabilityDomains encapsulates the clusters Availability Domain (AD) information in a map
+	// where the map key is the AD name and the struct is details about the AD.
+	// +optional
+	AvailabilityDomains map[string]OCIAvailabilityDomain `json:"availabilityDomains,omitempty"`
+
 	// +optional
 	Ready bool `json:"ready"`
 	// NetworkSpec encapsulates all things related to OCI network.
@@ -99,6 +104,16 @@ type OCIClusterList struct {
 	Items           []OCICluster `json:"items"`
 }
 
+// OCIAvailabilityDomain contains information about an Availability Domain (AD).
+type OCIAvailabilityDomain struct {
+
+	// Name is the AD's full name. Example: Uocm:PHX-AD-1
+	Name string `json:"name,omitempty"`
+
+	// FaultDomains a list of fault domain (FD) names. Example: ["FAULT-DOMAIN-1"]
+	FaultDomains []string `json:"faultDomains,omitempty"`
+}
+
 // GetConditions returns the list of conditions for an OCICluster API object.
 func (c *OCICluster) GetConditions() clusterv1.Conditions {
 	return c.Status.Conditions

cloud/ociutil/ociutil.go

@@ -103,6 +103,16 @@ func GetBaseLineOcpuOptimizationEnum(baseLineOcpuOptmimizationString string) (co
 	return "", errors.New("invalid baseline cpu optimization parameter")
 }
 
+// GetInstanceConfigBaseLineOcpuOptimizationEnum iterates over the valid baseline OCPUs to validate the passed in value
+func GetInstanceConfigBaseLineOcpuOptimizationEnum(baseLineOcpuOptmimizationString string) (core.InstanceConfigurationLaunchInstanceShapeConfigDetailsBaselineOcpuUtilizationEnum, error) {
+	for _, e := range core.GetInstanceConfigurationLaunchInstanceShapeConfigDetailsBaselineOcpuUtilizationEnumValues() {
+		if string(e) == baseLineOcpuOptmimizationString {
+			return e, nil
+		}
+	}
+	return "", errors.New("invalid baseline cpu optimization parameter")
+}
+
 // GetDefaultClusterTags creates and returns a map of the default tags for all clusters
 func GetDefaultClusterTags() map[string]string {
 	tags := make(map[string]string)

cloud/scope/clients.go

@@ -21,6 +21,7 @@ import (
 
 	"github.com/go-logr/logr"
 	"github.com/oracle/cluster-api-provider-oci/cloud/services/compute"
+	"github.com/oracle/cluster-api-provider-oci/cloud/services/computemanagement"
 	identityClient "github.com/oracle/cluster-api-provider-oci/cloud/services/identity"
 	nlb "github.com/oracle/cluster-api-provider-oci/cloud/services/networkloadbalancer"
 	"github.com/oracle/cluster-api-provider-oci/cloud/services/vcn"
@@ -34,10 +35,11 @@ import (
 
 // OCIClients is the struct of all the needed OCI clients
 type OCIClients struct {
-	ComputeClient      compute.ComputeClient
-	VCNClient          vcn.Client
-	LoadBalancerClient nlb.NetworkLoadBalancerClient
-	IdentityClient     identityClient.Client
+	ComputeClient           compute.ComputeClient
+	ComputeManagementClient computemanagement.Client
+	VCNClient               vcn.Client
+	LoadBalancerClient      nlb.NetworkLoadBalancerClient
+	IdentityClient          identityClient.Client
 }
 
 // ClientProvider defines the regional clients
@@ -96,16 +98,18 @@ func createClients(region string, oCIAuthConfigProvider common.ConfigurationProv
 	lbClient, err := createLbClient(region, oCIAuthConfigProvider, logger)
 	identityClient, err := createIdentityClient(region, oCIAuthConfigProvider, logger)
 	computeClient, err := createComputeClient(region, oCIAuthConfigProvider, logger)
+	computeManagementClient, err := createComputeManagementClient(region, oCIAuthConfigProvider, logger)
 
 	if err != nil {
 		return OCIClients{}, err
 	}
 
 	return OCIClients{
-		VCNClient:          vcnClient,
-		LoadBalancerClient: lbClient,
-		IdentityClient:     identityClient,
-		ComputeClient:      computeClient,
+		VCNClient:               vcnClient,
+		LoadBalancerClient:      lbClient,
+		IdentityClient:          identityClient,
+		ComputeClient:           computeClient,
+		ComputeManagementClient: computeManagementClient,
 	}, err
 }
 
@@ -152,3 +156,14 @@ func createComputeClient(region string, ociAuthConfigProvider common.Configurati
 
 	return &computeClient, nil
 }
+
+func createComputeManagementClient(region string, ociAuthConfigProvider common.ConfigurationProvider, logger *logr.Logger) (*core.ComputeManagementClient, error) {
+	computeManagementClient, err := core.NewComputeManagementClientWithConfigurationProvider(ociAuthConfigProvider)
+	if err != nil {
+		logger.Error(err, "unable to create OCI Compute Management Client")
+		return nil, err
+	}
+	computeManagementClient.SetRegion(region)
+
+	return &computeManagementClient, nil
+}

cloud/scope/cluster.go

@@ -20,6 +20,7 @@ import (
 	"context"
 	"fmt"
 	"reflect"
+	"sigs.k8s.io/cluster-api/util/conditions"
 	"strconv"
 
 	"github.com/oracle/cluster-api-provider-oci/cloud/services/vcn"
@@ -108,6 +109,7 @@ func NewClusterScope(params ClusterScopeParams) (*ClusterScope, error) {
 
 // PatchObject persists the cluster configuration and status.
 func (s *ClusterScope) PatchObject(ctx context.Context) error {
+	conditions.SetSummary(s.OCICluster)
 	return s.patchHelper.Patch(ctx, s.OCICluster)
 }
 
@@ -137,23 +139,29 @@ func (s *ClusterScope) IsResourceCreatedByClusterAPI(resourceFreeFormTags map[st
 // in case of single AD regions, the failure domain will be fault domain, in case of multi Ad regions, it will
 // be AD
 func (s *ClusterScope) setFailureDomains(ctx context.Context) error {
-	req := identity.ListAvailabilityDomainsRequest{CompartmentId: common.String(s.GetCompartmentId())}
+	reqAd := identity.ListAvailabilityDomainsRequest{CompartmentId: common.String(s.GetCompartmentId())}
 
-	resp, err := s.IdentityClient.ListAvailabilityDomains(ctx, req)
+	respAd, err := s.IdentityClient.ListAvailabilityDomains(ctx, reqAd)
 	if err != nil {
 		s.Logger.Error(err, "failed to list identity domains")
 		return err
 	}
 
-	numOfAds := len(resp.Items)
+	// build the AD list for cluster
+	err = s.setAvailabiltyDomainStatus(ctx, respAd.Items)
+	if err != nil {
+		return err
+	}
+
+	numOfAds := len(respAd.Items)
 	if numOfAds != 1 && numOfAds != 3 {
 		err := errors.New(fmt.Sprintf("invalid number of Availability Domains, should be either 1 or 3, but got %d", numOfAds))
 		s.Logger.Error(err, "invalid number of Availability Domains")
 		return err
 	}
 
 	if numOfAds == 3 {
-		for i, ad := range resp.Items {
+		for i, ad := range respAd.Items {
 			s.SetFailureDomain(strconv.Itoa(i+1), clusterv1.FailureDomainSpec{
 				ControlPlane: true,
 				Attributes:   map[string]string{AvailabilityDomain: *ad.Name},
@@ -162,7 +170,7 @@ func (s *ClusterScope) setFailureDomains(ctx context.Context) error {
 	} else {
 		req := identity.ListFaultDomainsRequest{
 			CompartmentId:      common.String(s.GetCompartmentId()),
-			AvailabilityDomain: resp.Items[0].Name,
+			AvailabilityDomain: respAd.Items[0].Name,
 		}
 		resp, err := s.IdentityClient.ListFaultDomains(ctx, req)
 		if err != nil {
@@ -191,6 +199,38 @@ func (s *ClusterScope) SetFailureDomain(id string, spec clusterv1.FailureDomainS
 	s.OCICluster.Status.FailureDomains[id] = spec
 }
 
+// setAvailabiltyDomainStatus builds the OCIAvailabilityDomain list and sets the OCICluster's status with this list
+// so that other parts of the provider have access to ADs and FDs without having to make multiple calls to identity.
+func (s *ClusterScope) setAvailabiltyDomainStatus(ctx context.Context, ads []identity.AvailabilityDomain) error {
+	clusterAds := make(map[string]infrastructurev1beta1.OCIAvailabilityDomain)
+	for _, ad := range ads {
+		reqFd := identity.ListFaultDomainsRequest{
+			CompartmentId:      common.String(s.GetCompartmentId()),
+			AvailabilityDomain: ad.Name,
+		}
+		respFd, err := s.IdentityClient.ListFaultDomains(ctx, reqFd)
+		if err != nil {
+			s.Logger.Error(err, "failed to list fault domains")
+			return err
+		}
+
+		var faultDomains []string
+		for _, fd := range respFd.Items {
+			faultDomains = append(faultDomains, *fd.Name)
+		}
+
+		adName := *ad.Name
+		clusterAds[adName] = infrastructurev1beta1.OCIAvailabilityDomain{
+			Name:         adName,
+			FaultDomains: faultDomains,
+		}
+	}
+
+	s.OCICluster.Status.AvailabilityDomains = clusterAds
+
+	return nil
+}
+
 func (s *ClusterScope) IsTagsEqual(freeFromTags map[string]string, definedTags map[string]map[string]interface{}) bool {
 	if reflect.DeepEqual(freeFromTags, s.GetFreeFormTags()) && reflect.DeepEqual(definedTags, s.GetDefinedTags()) {
 		return true