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128 lines
3.0 KiB
Go
128 lines
3.0 KiB
Go
/*
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Copyright 2020 The Flux authors
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package main
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import (
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"bytes"
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"context"
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"fmt"
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"github.com/spf13/cobra"
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"k8s.io/apimachinery/pkg/types"
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"sigs.k8s.io/controller-runtime/pkg/client"
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"sigs.k8s.io/yaml"
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"github.com/fluxcd/flux2/v2/internal/utils"
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)
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var exportCmd = &cobra.Command{
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Use: "export",
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Short: "Export resources in YAML format",
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Long: `The export sub-commands export resources in YAML format.`,
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}
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type exportFlags struct {
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all bool
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}
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var exportArgs exportFlags
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func init() {
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exportCmd.PersistentFlags().BoolVar(&exportArgs.all, "all", false, "select all resources")
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rootCmd.AddCommand(exportCmd)
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}
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// exportable represents a type that you can fetch from the Kubernetes
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// API, then tidy up for serialising.
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type exportable interface {
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adapter
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export() interface{}
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}
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// exportableList represents a type that has a list of values, each of
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// which is exportable.
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type exportableList interface {
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listAdapter
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exportItem(i int) interface{}
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}
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type exportCommand struct {
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object exportable
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list exportableList
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}
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func (export exportCommand) run(cmd *cobra.Command, args []string) error {
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if !exportArgs.all && len(args) < 1 {
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return fmt.Errorf("name is required")
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}
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ctx, cancel := context.WithTimeout(context.Background(), rootArgs.timeout)
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defer cancel()
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kubeClient, err := utils.KubeClient(kubeconfigArgs, kubeclientOptions)
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if err != nil {
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return err
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}
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if exportArgs.all {
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err = kubeClient.List(ctx, export.list.asClientList(), client.InNamespace(*kubeconfigArgs.Namespace))
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if err != nil {
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return err
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}
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if export.list.len() == 0 {
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return fmt.Errorf("no objects found in %s namespace", *kubeconfigArgs.Namespace)
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}
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for i := 0; i < export.list.len(); i++ {
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if err = printExport(export.list.exportItem(i)); err != nil {
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return err
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}
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}
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} else {
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name := args[0]
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namespacedName := types.NamespacedName{
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Namespace: *kubeconfigArgs.Namespace,
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Name: name,
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}
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err = kubeClient.Get(ctx, namespacedName, export.object.asClientObject())
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if err != nil {
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return err
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}
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return printExport(export.object.export())
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}
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return nil
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}
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func printExport(export any) error {
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data, err := yaml.Marshal(export)
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if err != nil {
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return err
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}
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printlnStdout("---")
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printlnStdout(resourceToString(data))
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return nil
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}
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func resourceToString(data []byte) string {
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data = bytes.Replace(data, []byte(" creationTimestamp: null\n"), []byte(""), 1)
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data = bytes.Replace(data, []byte("status: {}\n"), []byte(""), 1)
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data = bytes.TrimSpace(data)
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return string(data)
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}
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