add loudbalancer and route type for grpc server (#404)

Signed-off-by: Zhiwei Yin <[email protected]>

Author: zhiweiyin318

operator/v1/0000_01_operator.open-cluster-management.io_clustermanagers.crd.yaml

@@ -580,13 +580,43 @@ spec:
                               required:
                               - host
                               type: object
+                            loadBalancer:
+                              description: LoadBalancer points customized configuration
+                                for loadBalancer type.
+                              properties:
+                                caBundle:
+                                  description: CABundle is a customized caBundle of
+                                    the endpoint.
+                                  format: byte
+                                  type: string
+                                host:
+                                  description: Host is the customized host name of
+                                    the endpoint.
+                                  type: string
+                              type: object
+                            route:
+                              description: Route points customized configuration for
+                                route type.
+                              properties:
+                                caBundle:
+                                  description: CABundle is a customized caBundle of
+                                    the endpoint.
+                                  format: byte
+                                  type: string
+                                host:
+                                  description: Host is the customized host name of
+                                    the endpoint.
+                                  type: string
+                              type: object
                             type:
                               default: hostname
                               description: |-
                                 type specifies how the endpoint is exposed.
                                 You may need to apply an object to expose the endpoint, for example: a route.
                               enum:
                               - hostname
+                              - loadBalancer
+                              - route
                               type: string
                           required:
                           - type
@@ -609,13 +639,43 @@ spec:
                               required:
                               - host
                               type: object
+                            loadBalancer:
+                              description: LoadBalancer points customized configuration
+                                for loadBalancer type.
+                              properties:
+                                caBundle:
+                                  description: CABundle is a customized caBundle of
+                                    the endpoint.
+                                  format: byte
+                                  type: string
+                                host:
+                                  description: Host is the customized host name of
+                                    the endpoint.
+                                  type: string
+                              type: object
+                            route:
+                              description: Route points customized configuration for
+                                route type.
+                              properties:
+                                caBundle:
+                                  description: CABundle is a customized caBundle of
+                                    the endpoint.
+                                  format: byte
+                                  type: string
+                                host:
+                                  description: Host is the customized host name of
+                                    the endpoint.
+                                  type: string
+                              type: object
                             type:
                               default: hostname
                               description: |-
                                 type specifies how the endpoint is exposed.
                                 You may need to apply an object to expose the endpoint, for example: a route.
                               enum:
                               - hostname
+                              - loadBalancer
+                              - route
                               type: string
                           required:
                           - type

operator/v1/types_clustermanager.go

@@ -197,15 +197,22 @@ type EndpointExposure struct {
 type Endpoint struct {
 	// type specifies how the endpoint is exposed.
 	// You may need to apply an object to expose the endpoint, for example: a route.
-	// TODO: support loadbalancer.
 	// +kubebuilder:default:=hostname
-	// +kubebuilder:validation:Enum=hostname
+	// +kubebuilder:validation:Enum=hostname;loadBalancer;route
 	// +required
 	Type EndpointExposureType `json:"type,omitempty"`
 
 	// hostname points to a fixed hostname for serving agents' handshakes.
 	// +optional
 	Hostname *HostnameConfig `json:"hostname,omitempty"`
+
+	// LoadBalancer points customized configuration for loadBalancer type.
+	// +optional
+	LoadBalancer *LoadBalancerConfig `json:"loadBalancer,omitempty"`
+
+	// Route points customized configuration for route type.
+	// +optional
+	Route *RouteConfig `json:"route,omitempty"`
 }
 
 // HostnameConfig references a fixed hostname.
@@ -219,12 +226,40 @@ type HostnameConfig struct {
 	CABundle []byte `json:"caBundle,omitempty"`
 }
 
-// GRPCEndpointExposureType represents the type of endpoint exposure for gRPC.
+// LoadBalancerConfig references customized configuration for LoadBalancer type.
+type LoadBalancerConfig struct {
+	// Host is the customized host name of the endpoint.
+	// +optional
+	Host string `json:"host,omitempty"`
+
+	// CABundle is a customized caBundle of the endpoint.
+	// +optional
+	CABundle []byte `json:"caBundle,omitempty"`
+}
+
+// RouteConfig references customized configuration for Route type.
+type RouteConfig struct {
+	// Host is the customized host name of the endpoint.
+	// +optional
+	Host string `json:"host,omitempty"`
+
+	// CABundle is a customized caBundle of the endpoint.
+	// +optional
+	CABundle []byte `json:"caBundle,omitempty"`
+}
+
+// EndpointExposureType represents the type of endpoint exposure.
 type EndpointExposureType string
 
 const (
 	// EndpointTypeHostname is the endpoint exposure type for hostname.
 	EndpointTypeHostname EndpointExposureType = "hostname"
+
+	// EndpointTypeLoadBalancer is the endpoint exposure type for load balancer.
+	EndpointTypeLoadBalancer EndpointExposureType = "loadBalancer"
+
+	// EndpointTypeRoute is the endpoint exposure type for route.
+	EndpointTypeRoute EndpointExposureType = "route"
 )
 
 type CSRConfig struct {