Merge pull request openshift#13 from Bowenislandsong/merging_factory_and_interface

[wni] Merging factory and interface

Author: aravindhp

tools/windows-node-installer/pkg/cloudprovider/factory.go

@@ -6,6 +6,24 @@ import (
 	"github.com/openshift/windows-machine-config-operator/tools/windows-node-installer/pkg/client"
 )
 
+// Cloud is the interface that needs to be implemented per provider to allow support for creating Windows nodes on
+// that provider.
+type Cloud interface {
+	// CreateWindowsVM creates a Windows VM based on available image id, instance type, and ssh key name.
+	// TODO: CreateWindowsVM should return a provider object for further interaction with the created instance.
+	CreateWindowsVM(imageId, instanceType, sshKey string) error
+	// DestroyWindowsVM uses 'windows-node-installer.json' file that contains IDs of created instance and
+	// security group and deletes them.
+	// Example 'windows-node-installer.json' file:
+	// {
+	//	"InstanceIDs": ["<example-instance-ID>"],
+	//  "SecurityGroupIDs": ["<example-security-group-ID>"]
+	// {
+	// It deletes the security group only if the group is not associated with any instance.
+	// The association between the instance and security group are available from individual cloud provider.
+	DestroyWindowsVM() error
+}
+
 // CloudProviderFactory returns cloud specific interface for performing necessary functions related to creating or
 // destroying an instance.
 // The factory takes in kubeconfig of an existing OpenShift cluster and a cloud vendor specific credential file.