Add GetControlPlaneMachines function (#213)

Signed-off-by: Stephen Augustus <[email protected]>

Author: justaugustus

pkg/cloud/azure/actuators/machine/actuator.go

@@ -54,6 +54,17 @@ func NewActuator(params ActuatorParams) *Actuator {
 	}
 }
 
+// GetControlPlaneMachines retrieves all control plane nodes from a MachineList
+func GetControlPlaneMachines(machineList *clusterv1.MachineList) []*clusterv1.Machine {
+	var cpm []*clusterv1.Machine
+	for _, m := range machineList.Items {
+		if m.Spec.Versions.ControlPlane != "" {
+			cpm = append(cpm, m.DeepCopy())
+		}
+	}
+	return cpm
+}
+
 // Create creates a machine and is invoked by the machine controller.
 func (a *Actuator) Create(ctx context.Context, cluster *clusterv1.Cluster, machine *clusterv1.Machine) error {
 	if cluster == nil {