Rename gotk binary to flux

Signed-off-by: Hidde Beydals <hello@hidde.co>

cmd/flux/export_kustomization.go

@@ -0,0 +1,121 @@
+/*
+Copyright 2020 The Flux authors
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package main
+
+import (
+	"context"
+	"fmt"
+
+	"github.com/spf13/cobra"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/apimachinery/pkg/types"
+	"sigs.k8s.io/controller-runtime/pkg/client"
+	"sigs.k8s.io/yaml"
+
+	kustomizev1 "github.com/fluxcd/kustomize-controller/api/v1beta1"
+	"github.com/fluxcd/toolkit/internal/utils"
+)
+
+var exportKsCmd = &cobra.Command{
+	Use:     "kustomization [name]",
+	Aliases: []string{"ks"},
+	Short:   "Export Kustomization resources in YAML format",
+	Long:    "The export kustomization command exports one or all Kustomization resources in YAML format.",
+	Example: `  # Export all Kustomization resources
+  flux export kustomization --all > kustomizations.yaml
+
+  # Export a Kustomization
+  flux export kustomization my-app > kustomization.yaml
+`,
+	RunE: exportKsCmdRun,
+}
+
+func init() {
+	exportCmd.AddCommand(exportKsCmd)
+}
+
+func exportKsCmdRun(cmd *cobra.Command, args []string) error {
+	if !exportAll && len(args) < 1 {
+		return fmt.Errorf("kustomization name is required")
+	}
+
+	ctx, cancel := context.WithTimeout(context.Background(), timeout)
+	defer cancel()
+
+	kubeClient, err := utils.KubeClient(kubeconfig)
+	if err != nil {
+		return err
+	}
+
+	if exportAll {
+		var list kustomizev1.KustomizationList
+		err = kubeClient.List(ctx, &list, client.InNamespace(namespace))
+		if err != nil {
+			return err
+		}
+
+		if len(list.Items) == 0 {
+			logger.Failuref("no kustomizations found in %s namespace", namespace)
+			return nil
+		}
+
+		for _, kustomization := range list.Items {
+			if err := exportKs(kustomization); err != nil {
+				return err
+			}
+		}
+	} else {
+		name := args[0]
+		namespacedName := types.NamespacedName{
+			Namespace: namespace,
+			Name:      name,
+		}
+		var kustomization kustomizev1.Kustomization
+		err = kubeClient.Get(ctx, namespacedName, &kustomization)
+		if err != nil {
+			return err
+		}
+		return exportKs(kustomization)
+	}
+	return nil
+}
+
+func exportKs(kustomization kustomizev1.Kustomization) error {
+	gvk := kustomizev1.GroupVersion.WithKind("Kustomization")
+	export := kustomizev1.Kustomization{
+		TypeMeta: metav1.TypeMeta{
+			Kind:       gvk.Kind,
+			APIVersion: gvk.GroupVersion().String(),
+		},
+		ObjectMeta: metav1.ObjectMeta{
+			Name:        kustomization.Name,
+			Namespace:   kustomization.Namespace,
+			Labels:      kustomization.Labels,
+			Annotations: kustomization.Annotations,
+		},
+		Spec: kustomization.Spec,
+	}
+
+	data, err := yaml.Marshal(export)
+	if err != nil {
+		return err
+	}
+
+	fmt.Println("---")
+	fmt.Println(resourceToString(data))
+	return nil
+}