Added support for legacy AWS dedicated hosts

Author: vr4manta

machine/v1beta1/types_awsprovider.go

@@ -430,11 +430,13 @@ const (
 
 // HostPlacement is the type that will be used to configure the placement of AWS instances.
 // +kubebuilder:validation:XValidation:rule="has(self.affinity) && self.affinity == 'DedicatedHost' ? has(self.dedicatedHost) : true",message="dedicatedHost is required when affinity is DedicatedHost, and optional otherwise"
+// +kubebuilder:validation:XValidation:rule="has(self.affinity) && has(self.dynamicHost) ? self.affinity == 'DynamicHost' : true",message="dynamicHost is only allowed when affinity is DynamicHost, and forbidden otherwise"
 // +union
 type HostPlacement struct {
 	// affinity specifies the affinity setting for the instance.
 	// Allowed values are AnyAvailable and DedicatedHost.
 	// When Affinity is set to DedicatedHost, an instance started onto a specific host always restarts on the same host if stopped. In this scenario, the `dedicatedHost` field must be set.
+	// When Affinity is set to DynamicHost, a dedicated host will be allocated and assigned to the instance and the instance will always restart on this host if stopped. In this scenario, the `dynamicHost` field may be set to provide additional settings.
 	// When Affinity is set to AnyAvailable, and you stop and restart the instance, it can be restarted on any available host.
 	// When Affinity is set to AnyAvailable and the `dedicatedHost` field is defined, it runs on specified Dedicated Host, but may move if stopped.
 	// +required
@@ -460,15 +462,47 @@ const (
 	HostAffinityDedicatedHost HostAffinity = "DedicatedHost"
 )
 
+// AllocationStrategy selects how a dedicated host is provided to the system for assigning to the instance.
+// +kubebuilder:validation:Enum:=Provided;Dynamic
+type AllocationStrategy string
+
+const (
+	AllocationStrategyUserProvided AllocationStrategy = "Provided"
+	AllocationStrategyDynamic      AllocationStrategy = "Dynamic"
+)
+
 // DedicatedHost represents the configuration for the usage of dedicated host.
+// +kubebuilder:validation:XValidation:rule="self.allocationStrategy == 'Provided' ? has(self.id) : true",message="id is required when allocationStrategy is Provided, and forbidden otherwise"
+// +kubebuilder:validation:XValidation:rule="has(self.id) ? self.allocationStrategy == 'Provided' : true",message="id is required when allocationStrategy is Provided, and forbidden otherwise"
+// +kubebuilder:validation:XValidation:rule="has(self.dynamicHostAllocation) ? self.allocationStrategy == 'Dynamic' : true",message="dynamicHostAllocation is only allowed when allocationStrategy is Dynamic"
 type DedicatedHost struct {
+	// allocationStrategy specifies if the dedicated host will be provided by the admin through the id field or if the host
+	// will be dynamically allocated.
+	// +required
+	AllocationStrategy AllocationStrategy `json:"allocationStrategy"`
+
 	// id identifies the AWS Dedicated Host on which the instance must run.
 	// The value must start with "h-" followed by either 8 or 17 lowercase hexadecimal characters (0-9 and a-f).
 	// The use of 8 lowercase hexadecimal characters is for older legacy hosts that may not have been migrated to newer format.
 	// Must be either 10 or 19 characters in length.
 	// +kubebuilder:validation:XValidation:rule="self.matches('^h-([0-9a-f]{8}|[0-9a-f]{17})$')",message="hostID must start with 'h-' followed by either 8 or 17 lowercase hexadecimal characters (0-9 and a-f)"
 	// +kubebuilder:validation:MinLength=10
 	// +kubebuilder:validation:MaxLength=19
-	// +required
+	// +optional
+	// +unionMember
 	ID string `json:"id,omitempty"`
+
+	// dynamicHost enables automatic allocation of a single dedicated host.
+	// This field is mutually exclusive with dedicatedHost and always allocates exactly one host.
+	// +optional
+	// +unionMember
+	DynamicHostAllocation *DynamicHostAllocationSpec `json:"dynamicHostAllocation,omitempty"`
+}
+
+// DynamicHostAllocationSpec defines the configuration for dynamic dedicated host allocation.
+// This specification always allocates exactly one dedicated host per machine.
+type DynamicHostAllocationSpec struct {
+	// tags to apply to the allocated dedicated host.
+	// +optional
+	Tags map[string]string `json:"tags,omitempty"`
 }