mirror of
https://github.com/kubernetes-sigs/kustomize.git
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119 lines
3.7 KiB
Go
119 lines
3.7 KiB
Go
// Copyright 2023 The Kubernetes Authors.
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// SPDX-License-Identifier: Apache-2.0
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package remove
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import (
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"errors"
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"fmt"
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"log"
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"slices"
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"strings"
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"github.com/spf13/cobra"
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"sigs.k8s.io/kustomize/api/konfig"
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"sigs.k8s.io/kustomize/api/types"
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"sigs.k8s.io/kustomize/kustomize/v5/commands/internal/kustfile"
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"sigs.k8s.io/kustomize/kustomize/v5/commands/internal/util"
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"sigs.k8s.io/kustomize/kyaml/filesys"
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)
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type removeConfigMapOptions struct {
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configMapNamesToRemove []string
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namespace string
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}
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// newCmdRemoveConfigMap removes configMapGenerator(s) with the specified name(s).
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func newCmdRemoveConfigMap(fSys filesys.FileSystem) *cobra.Command {
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var flags removeConfigMapOptions
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cmd := &cobra.Command{
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Use: "configmap NAME [,NAME] [--namespace=namespace-name]",
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Short: "Removes the specified configmap(s) from " +
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konfig.DefaultKustomizationFileName(),
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Long: `Removes the specified configmap(s) from the ` + konfig.DefaultKustomizationFileName() + ` file in the specified namespace.
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If multiple configmap names are specified, the command will not fail on secret names that were not found in the file,
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but will issue a warning for each name that wasn't found.`,
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Example: `
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# Removes a single configmap named 'my-configmap' in the default namespace from the ` + konfig.DefaultKustomizationFileName() + ` file
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kustomize edit remove configmap my-configmap
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# Removes configmaps named 'my-configmap' and 'other-configmap' in namespace 'test-namespace' from the ` + konfig.DefaultKustomizationFileName() + ` file
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kustomize edit remove configmap my-configmap,other-configmap --namespace=test-namespace
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`,
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RunE: func(cmd *cobra.Command, args []string) error {
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err := flags.Validate(args)
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if err != nil {
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return err
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}
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return flags.RunRemoveConfigMap(fSys)
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},
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}
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cmd.Flags().StringVar(
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&flags.namespace,
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util.NamespaceFlag,
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"",
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"Namespace to remove ConfigMap(s) from",
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)
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return cmd
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}
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// Validate validates removeConfigMap command.
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func (o *removeConfigMapOptions) Validate(args []string) error {
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switch {
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case len(args) == 0:
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return errors.New("at least one configmap name must be specified")
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case len(args) > 1:
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return fmt.Errorf("too many arguments: %s; to provide multiple configmaps to remove, please separate configmap names by commas", args)
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}
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o.configMapNamesToRemove = strings.Split(args[0], ",")
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return nil
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}
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// RunRemoveConfigMap runs ConfigMap command (do real work).
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func (o *removeConfigMapOptions) RunRemoveConfigMap(fSys filesys.FileSystem) error {
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mf, err := kustfile.NewKustomizationFile(fSys)
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if err != nil {
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return fmt.Errorf("could not read kustomization file: %w", err)
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}
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m, err := mf.Read()
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if err != nil {
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return fmt.Errorf("could not read kustomization file contents: %w", err)
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}
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foundConfigMaps := make(map[string]struct{})
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remainingConfigMaps := make([]types.ConfigMapArgs, 0, len(m.ConfigMapGenerator))
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for _, currentConfigMap := range m.ConfigMapGenerator {
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if slices.Contains(o.configMapNamesToRemove, currentConfigMap.Name) &&
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util.NamespaceEqual(currentConfigMap.Namespace, o.namespace) {
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foundConfigMaps[currentConfigMap.Name] = struct{}{}
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continue
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}
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remainingConfigMaps = append(remainingConfigMaps, currentConfigMap)
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}
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if len(foundConfigMaps) == 0 {
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return fmt.Errorf("no specified configmap(s) were found in the %s file",
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konfig.DefaultKustomizationFileName())
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}
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for _, name := range o.configMapNamesToRemove {
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if _, found := foundConfigMaps[name]; !found {
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log.Printf("configmap %s doesn't exist in kustomization file", name)
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}
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}
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m.ConfigMapGenerator = remainingConfigMaps
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err = mf.Write(m)
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if err != nil {
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return fmt.Errorf("failed to write kustomization file: %w", err)
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}
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return nil
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}
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