Rename tk binary to gotk

To avoid conflicts with the `tk` binary from the Tanka project.

cmd/gotk/export_source_git.go

@@ -0,0 +1,163 @@
+/*
+Copyright 2020 The Flux CD contributors.
+
+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"
+
+	sourcev1 "github.com/fluxcd/source-controller/api/v1alpha1"
+	"github.com/spf13/cobra"
+	corev1 "k8s.io/api/core/v1"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/apimachinery/pkg/types"
+	"sigs.k8s.io/controller-runtime/pkg/client"
+	"sigs.k8s.io/yaml"
+)
+
+var exportSourceGitCmd = &cobra.Command{
+	Use:   "git [name]",
+	Short: "Export GitRepository sources in YAML format",
+	Long:  "The export source git command exports on or all GitRepository sources in YAML format.",
+	Example: `  # Export all GitRepository sources
+  gotk export source git --all > sources.yaml
+
+  # Export a GitRepository source including the SSH key pair or basic auth credentials
+  gotk export source git my-private-repo --with-credentials > source.yaml
+`,
+	RunE: exportSourceGitCmdRun,
+}
+
+func init() {
+	exportSourceCmd.AddCommand(exportSourceGitCmd)
+}
+
+func exportSourceGitCmdRun(cmd *cobra.Command, args []string) error {
+	if !exportAll && len(args) < 1 {
+		return fmt.Errorf("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 sourcev1.GitRepositoryList
+		err = kubeClient.List(ctx, &list, client.InNamespace(namespace))
+		if err != nil {
+			return err
+		}
+
+		if len(list.Items) == 0 {
+			logger.Failuref("no source found in %s namespace", namespace)
+			return nil
+		}
+
+		for _, repository := range list.Items {
+			if err := exportGit(repository); err != nil {
+				return err
+			}
+			if exportSourceWithCred {
+				if err := exportGitCredentials(ctx, kubeClient, repository); err != nil {
+					return err
+				}
+			}
+		}
+	} else {
+		name := args[0]
+		namespacedName := types.NamespacedName{
+			Namespace: namespace,
+			Name:      name,
+		}
+		var repository sourcev1.GitRepository
+		err = kubeClient.Get(ctx, namespacedName, &repository)
+		if err != nil {
+			return err
+		}
+		if err := exportGit(repository); err != nil {
+			return err
+		}
+		if exportSourceWithCred {
+			return exportGitCredentials(ctx, kubeClient, repository)
+		}
+	}
+	return nil
+}
+
+func exportGit(source sourcev1.GitRepository) error {
+	gvk := sourcev1.GroupVersion.WithKind(sourcev1.GitRepositoryKind)
+	export := sourcev1.GitRepository{
+		TypeMeta: metav1.TypeMeta{
+			Kind:       gvk.Kind,
+			APIVersion: gvk.GroupVersion().String(),
+		},
+		ObjectMeta: metav1.ObjectMeta{
+			Name:      source.Name,
+			Namespace: source.Namespace,
+		},
+		Spec: source.Spec,
+	}
+
+	data, err := yaml.Marshal(export)
+	if err != nil {
+		return err
+	}
+
+	fmt.Println("---")
+	fmt.Println(string(data))
+	return nil
+}
+
+func exportGitCredentials(ctx context.Context, kubeClient client.Client, source sourcev1.GitRepository) error {
+	if source.Spec.SecretRef != nil {
+		namespacedName := types.NamespacedName{
+			Namespace: source.Namespace,
+			Name:      source.Spec.SecretRef.Name,
+		}
+		var cred corev1.Secret
+		err := kubeClient.Get(ctx, namespacedName, &cred)
+		if err != nil {
+			return fmt.Errorf("failed to retrieve secret %s, error: %w", namespacedName.Name, err)
+		}
+
+		exported := corev1.Secret{
+			TypeMeta: metav1.TypeMeta{
+				APIVersion: "v1",
+				Kind:       "Secret",
+			},
+			ObjectMeta: metav1.ObjectMeta{
+				Name:      namespacedName.Name,
+				Namespace: namespacedName.Namespace,
+			},
+			Data: cred.Data,
+			Type: cred.Type,
+		}
+
+		data, err := yaml.Marshal(exported)
+		if err != nil {
+			return err
+		}
+
+		fmt.Println("---")
+		fmt.Println(string(data))
+	}
+	return nil
+}