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2bb09697ce
Since the generic commands tend to share a few of the methods they need -- at least AsClientObject -- it's worth having just one wrapper struct for each API type, and adding methods to it where necessary. For the automation types, I put these in auto.go. While doing this I also did some tidying: - I changed the name of the wrappers to `<type>Adapter`, and the generic adapter to `universalAdapter` (it's only needed for delete, so far). - I de-exported and renamed some interface methods e.g., `exportItem`. They aren't needed outside the package. Signed-off-by: Michael Bridgen <michael@weave.works>
127 lines
2.9 KiB
Go
127 lines
2.9 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/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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var (
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exportAll bool
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)
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func init() {
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exportCmd.PersistentFlags().BoolVar(&exportAll, "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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adapter
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len() int
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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 !exportAll && 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(), timeout)
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defer cancel()
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kubeClient, err := utils.KubeClient(kubeconfig, kubecontext)
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if err != nil {
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return err
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}
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if exportAll {
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err = kubeClient.List(ctx, export.list.asRuntimeObject(), client.InNamespace(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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logger.Failuref("no objects found in %s namespace", namespace)
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return nil
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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: namespace,
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Name: name,
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}
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err = kubeClient.Get(ctx, namespacedName, export.object.asRuntimeObject())
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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 interface{}) 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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fmt.Println("---")
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fmt.Println(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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return string(data)
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}
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