[feat: gw-api] Creating Target Group + TGB from Gateway spec

apis/gateway/v1beta1/targetgroupconfig_types.go

@@ -65,9 +65,10 @@ type HealthCheckConfiguration struct {
 // +optional
 HealthCheckPath *string `json:"healthCheckPath,omitempty"`
 
-// healthCheckPort The port to use to connect with the target.
+// healthCheckPort The port the load balancer uses when performing health checks on targets.
+// The default is to use the port on which each target receives traffic from the load balancer.
 // +optional
-HealthCheckPort *int32 `json:"healthCheckPort,omitempty"`
+HealthCheckPort *string `json:"healthCheckPort,omitempty"`
 
 // healthCheckProtocol The protocol to use to connect with the target. The GENEVE, TLS, UDP, and TCP_UDP protocols are not supported for health checks.
 // +optional
@@ -116,6 +117,18 @@ const (
 TargetGroupHealthCheckProtocolTCP TargetGroupHealthCheckProtocol = "tcp"
 )
 
+// +kubebuilder:validation:Enum=HTTP;HTTPS;TCP;TLS;UDP;TCP_UDP
+type Protocol string
+
+const (
+ProtocolHTTP Protocol = "HTTP"
+ProtocolHTTPS Protocol = "HTTPS"
+ProtocolTCP Protocol = "TCP"
+ProtocolTLS Protocol = "TLS"
+ProtocolUDP Protocol = "UDP"
+ProtocolTCP_UDP Protocol = "TCP_UDP"
+)
+
 // +kubebuilder:validation:Enum=http1;http2;grpc
 type ProtocolVersion string
 
@@ -125,12 +138,23 @@ const (
 ProtocolVersionGRPC ProtocolVersion = "grpc"
 )
 
+// +kubebuilder:validation:Enum=none;prefer-route-specific;prefer-default
+type MergeMode string
+
+const (
+MergeModeNone MergeMode = "none"
+MergeModePreferRouteSpecific MergeMode = "prefer-route-specific"
+MergeModePreferDefault MergeMode = "prefer-default"
+)
+
 // TargetGroupConfigurationSpec defines the TargetGroup properties for a route.
 type TargetGroupConfigurationSpec struct {
 
 // targetReference the kubernetes object to attach the Target Group settings to.
 TargetReference Reference `json:"targetReference"`
 
+// mergeMode the mode to use for merging the identified per-route configuration and default configuration.
+
 // defaultRouteConfiguration fallback configuration applied to all routes, unless overridden by route-specific configurations.
 // +optional
 DefaultConfiguration TargetGroupProps `json:"defaultConfiguration,omitempty"`
@@ -141,19 +165,23 @@ type TargetGroupConfigurationSpec struct {
 }
 
 // +kubebuilder:validation:Pattern="^(HTTPRoute|TLSRoute|TCPRoute|UDPRoute|GRPCRoute)?:([^:]+)?:([^:]+)?$"
-type RouteName string
+type RouteIdentifier string
 
 // RouteConfiguration defines the per route configuration
 type RouteConfiguration struct {
-// name the name of the route, it should be in the form of ROUTE:NAMESPACE:NAME
-Name RouteName `json:"name"`
+// name the identifier of the route, it should be in the form of ROUTE:NAMESPACE:NAME
+Identifier RouteIdentifier `json:"identifier"`
 
 // targetGroupProps the target group specific properties
 TargetGroupProps TargetGroupProps `json:"targetGroupProps"`
 }
 
 // TargetGroupProps defines the target group properties
 type TargetGroupProps struct {
+// targetGroupName specifies the name to assign to the Target Group. If not defined, then one is generated.
+// +optional
+TargetGroupName string `json:"targetGroupName,omitempty"`
+
 // ipAddressType specifies whether the target group is of type IPv4 or IPv6. If unspecified, it will be automatically inferred.
 // +optional
 IPAddressType *TargetGroupIPAddressType `json:"ipAddressType,omitempty"`
@@ -174,10 +202,25 @@ type TargetGroupProps struct {
 // +optional
 TargetType *TargetType `json:"targetType,omitempty"`
 
+// Protocol [Application / Network Load Balancer] the protocol for the target group.
+// If unspecified, it will be automatically inferred.
+// +optional
+Protocol *Protocol `json:"protocol,omitempty"`
+
 // protocolVersion [HTTP/HTTPS protocol] The protocol version. The possible values are GRPC , HTTP1 and HTTP2
 // +optional
 ProtocolVersion *ProtocolVersion `json:"protocolVersion,omitempty"`
 
+// enableProxyProtocolV2 [Network LoadBalancers] Indicates whether proxy protocol version 2 is enabled.
+// By default, proxy protocol is disabled.
+// +optional
+EnableProxyProtocolV2 *bool `json:"enableProxyProtocolV2,omitempty"`
+
+// EnableMultiCluster [Application / Network LoadBalancer]
+// Allows for multiple Clusters / Services to use the generated TargetGroup ARN
+// +optional
+EnableMultiCluster bool `json:"enableMultiCluster,omitempty"`
+
 // vpcID is the VPC of the TargetGroup. If unspecified, it will be automatically inferred.
 // +optional
 VpcID *string `json:"vpcID,omitempty"`
@@ -231,6 +274,10 @@ type TargetGroupConfiguration struct {
 Status TargetGroupConfigurationStatus `json:"status,omitempty"`
 }
 
+func (tgConfig *TargetGroupConfiguration) GetTargetGroupConfigForRoute(name, namespace, kind string) *TargetGroupProps {
+return &tgConfig.Spec.DefaultConfiguration
+}
+
 // +kubebuilder:object:root=true
 
 // TargetGroupConfigurationList contains a list of TargetGroupConfiguration