feat(deployer/eksctl): allow deleting nodegroupds with --down, skip draining nodegroups option (#636)

* Allow deleting nodegroupds with --down

* Skip draining as default when deleting nodegroups

* nit: added args directly in execute command call

Author: maherthomsi

internal/deployers/eksctl/down.go

@@ -1,16 +1,33 @@
 package eksctl
 
 import (
+	"fmt"
+
 	"github.com/aws/aws-k8s-tester/internal/util"
 	"k8s.io/klog"
 )
 
 func (d *deployer) Down() error {
-	klog.Infof("deleting cluster %s", d.commonOptions.RunID())
-	err := util.ExecuteCommand("eksctl", "delete", "cluster", "--name", d.commonOptions.RunID(), "--wait")
-	if err != nil {
-		return err
+	d.initClusterName()
+
+	var err error
+
+	if d.DeployTarget == "nodegroup" {
+		klog.Infof("deleting nodegroup %s from cluster %s", d.NodegroupName, d.clusterName)
+		err = util.ExecuteCommand("eksctl", "delete", "nodegroup", "--cluster", d.clusterName, "--name", d.NodegroupName, "--drain=false", "--wait")
+		if err != nil {
+			return fmt.Errorf("failed to delete nodegroup: %v", err)
+		}
+		klog.Infof("Successfully deleted nodegroup: %s from cluster: %s", d.NodegroupName, d.clusterName)
+	} else if d.DeployTarget == "cluster" {
+		klog.Infof("deleting cluster %s", d.clusterName)
+		err = util.ExecuteCommand("eksctl", "delete", "cluster", "--name", d.clusterName, "--wait")
+		if err != nil {
+			return fmt.Errorf("failed to delete cluster: %v", err)
+		}
+		klog.Infof("Successfully deleted cluster: %s", d.clusterName)
+	} else {
+		return fmt.Errorf("Unsupported deploy target: %s, supported options: `cluster`, `nodegroup`.", d.DeployTarget)
 	}
-	klog.Infof("deleted cluster: %s", d.commonOptions.RunID())
 	return nil
 }