Refactoring validation and adding airgap support for list packages

cmd/eksctl-anywhere/cmd/generatepackage.go

@@ -58,10 +58,6 @@ var generatePackageCommand = &cobra.Command{
 
 func runGeneratePackages(cmd *cobra.Command, args []string) error {
 	clusterName := gpOptions.clusterName
-	if len(gpOptions.kubeVersion) > 0 {
-		// allow both
-		clusterName = ""
-	}
 	if err := curatedpackages.ValidateKubeVersion(gpOptions.kubeVersion, clusterName); err != nil {
 		return err
 	}

cmd/eksctl-anywhere/cmd/listpackages.go

@@ -6,7 +6,11 @@ import (
 	"os"
 
 	"github.com/spf13/cobra"
+	"k8s.io/apimachinery/pkg/types"
 
+	anywherev1 "github.com/aws/eks-anywhere/pkg/api/v1alpha1"
+	"github.com/aws/eks-anywhere/pkg/clients/kubernetes"
+	"github.com/aws/eks-anywhere/pkg/constants"
 	"github.com/aws/eks-anywhere/pkg/curatedpackages"
 	"github.com/aws/eks-anywhere/pkg/kubeconfig"
 )
@@ -33,7 +37,7 @@ func init() {
 	listPackagesCommand.Flags().StringVar(&lpo.kubeConfig, "kubeconfig", "",
 		"Path to a kubeconfig file to use when source is a cluster.")
 	listPackagesCommand.Flags().StringVar(&lpo.clusterName, "cluster", "",
-		"Name of cluster for package list.")
+		"Name of cluster for package list. Required for airgapped environments.")
 	listPackagesCommand.Flags().StringVar(&lpo.bundlesOverride, "bundles-override", "",
 		"Override default Bundles manifest (not recommended)")
 }
@@ -60,7 +64,27 @@ func listPackages(ctx context.Context) error {
 	if err != nil {
 		return err
 	}
-	deps, err := NewDependenciesForPackages(ctx, WithRegistryName(lpo.registry), WithKubeVersion(lpo.kubeVersion), WithMountPaths(kubeConfig), WithBundlesOverride(lpo.bundlesOverride))
+
+	depOpts := []PackageOpt{
+		WithRegistryName(lpo.registry),
+		WithKubeVersion(lpo.kubeVersion),
+		WithMountPaths(kubeConfig),
+		WithBundlesOverride(lpo.bundlesOverride),
+	}
+	cluster := &anywherev1.Cluster{}
+	if len(lpo.clusterName) > 0 {
+		k8sClient, err := kubernetes.NewRuntimeClientFromFileName(kubeConfig)
+		if err != nil {
+			return fmt.Errorf("unable to initalize k8s client: %v", err)
+		}
+
+		if err := k8sClient.Get(ctx, types.NamespacedName{Name: lpo.clusterName, Namespace: constants.DefaultNamespace}, cluster); err != nil {
+			return fmt.Errorf("unable to get cluster %s: %v", lpo.clusterName, err)
+		}
+		depOpts = append(depOpts, WithCluster(cluster))
+	}
+
+	deps, err := NewDependenciesForPackages(ctx, depOpts...)
 	if err != nil {
 		return fmt.Errorf("unable to initialize executables: %v", err)
 	}

pkg/curatedpackages/validations.go

@@ -6,19 +6,17 @@ import (
 )
 
 func ValidateKubeVersion(kubeVersion string, clusterName string) error {
-	if len(clusterName) > 0 {
-		if len(kubeVersion) > 0 {
-			return fmt.Errorf("please specify either kube-version or cluster name not both")
-		}
-		return nil
-	}
-
 	if len(kubeVersion) > 0 {
 		versionSplit := strings.Split(kubeVersion, ".")
 		if len(versionSplit) != 2 {
 			return fmt.Errorf("please specify kube-version as <major>.<minor>")
 		}
 		return nil
 	}
+
+	if len(clusterName) > 0 {
+		// no-op since either cluster name or kube-version is needed.
+		return nil
+	}
 	return fmt.Errorf("please specify kube-version or cluster name")
 }

pkg/curatedpackages/validations_test.go

@@ -13,13 +13,6 @@ func TestValidateNoKubeVersionWhenClusterSucceeds(t *testing.T) {
 	}
 }
 
-func TestValidateKubeVersionWhenClusterFails(t *testing.T) {
-	err := curatedpackages.ValidateKubeVersion("1.21", "morby")
-	if err == nil {
-		t.Errorf("not both kube-version and cluster")
-	}
-}
-
 func TestValidateKubeVersionWhenNoClusterFails(t *testing.T) {
 	err := curatedpackages.ValidateKubeVersion("", "")
 	if err == nil {