fix: add --namespace flag to edit add configmap

* Add the option to specify a namespace when using 'kustomize edit add configmap'
  for code parity with 'edit add secret'.
* Rename constants for 'add configmap'/'add secret' so they are standardized.
* Create new constant for the 'namespace' flag.
* Update test cases to cover new scenarios.

kustomize/commands/edit/add/configmap.go

@@ -22,7 +22,7 @@ func newCmdAddConfigMap(
 ) *cobra.Command {
  var flags configmapSecretFlagsAndArgs
  cmd := &cobra.Command{
- Use: "configmap NAME [--behavior={create|merge|replace}] [--from-file=[key=]source] [--from-literal=key1=value1]",
+ Use: "configmap NAME [--namespace=namespace-name] [--behavior={create|merge|replace}] [--from-file=[key=]source] [--from-literal=key1=value1]",
  Short: "Adds a configmap to the kustomization file",
  Long: "",
  Example: `
@@ -36,7 +36,10 @@ func newCmdAddConfigMap(
  kustomize edit add configmap my-configmap --from-env-file=env/path.env
 
  # Adds a configmap from env-file with behavior merge
- kustomize edit add configmap my-configmap --behavior=merge --from-env-file=env/path.env 
+ kustomize edit add configmap my-configmap --behavior=merge --from-env-file=env/path.env
+
+ # Adds a configmap to the kustomization file with a specific namespace
+ kustomize edit add configmap my-configmap --namespace test-ns --from-literal=my-key=my-value
 `,
  RunE: func(_ *cobra.Command, args []string) error {
  return runEditAddConfigMap(flags, fSys, args, ldr, rf)
@@ -62,16 +65,21 @@ func newCmdAddConfigMap(
  "Specify the path to a file to read lines of key=val pairs to create a configmap (i.e. a Docker .env file).")
  cmd.Flags().BoolVar(
  &flags.DisableNameSuffixHash,
- flagDisableNameSuffixHash,
+ disableNameSuffixHashFlag,
  false,
  "Disable the name suffix for the configmap")
  cmd.Flags().StringVar(
  &flags.Behavior,
- flagBehavior,
+ behaviorFlag,
  "",
  "Specify the behavior for config map generation, i.e whether to create a new configmap (the default), "+
  "to merge with a previously defined one, or to replace an existing one. Merge and replace should be used only "+
  " when overriding an existing configmap defined in a base")
+ cmd.Flags().StringVar(
+ &flags.Namespace,
+ namespaceFlag,
+ "",
+ "Specify the namespace of the ConfigMap")
 
  return cmd
 }
@@ -128,7 +136,7 @@ func addConfigMap(
  flags configmapSecretFlagsAndArgs,
  rf *resource.Factory,
 ) error {
- args := findOrMakeConfigMapArgs(k, flags.Name)
+ args := findOrMakeConfigMapArgs(k, flags.Name, flags.Namespace)
  mergeFlagsIntoGeneratorArgs(&args.GeneratorArgs, flags)
  // Validate by trying to create corev1.configmap.
  args.Options = types.MergeGlobalOptionsIntoLocal(
@@ -137,15 +145,15 @@ func addConfigMap(
  return err
 }
 
-func findOrMakeConfigMapArgs(m *types.Kustomization, name string) *types.ConfigMapArgs {
+func findOrMakeConfigMapArgs(m *types.Kustomization, name, namespace string) *types.ConfigMapArgs {
  for i, v := range m.ConfigMapGenerator {
- if name == v.Name {
+ if name == v.Name && namespace == v.Namespace {
  return &m.ConfigMapGenerator[i]
  }
  }
  // config map not found, create new one and add it to the kustomization file.
  cm := &types.ConfigMapArgs{
- GeneratorArgs: types.GeneratorArgs{Name: name},
+ GeneratorArgs: types.GeneratorArgs{Name: name, Namespace: namespace},
  }
  m.ConfigMapGenerator = append(m.ConfigMapGenerator, *cm)
  return &m.ConfigMapGenerator[len(m.ConfigMapGenerator)-1]

kustomize/commands/edit/add/configmapSecretFlagsAndArgs.go

@@ -8,7 +8,6 @@ import (
  "strings"
 
  "sigs.k8s.io/kustomize/api/types"
-
  "sigs.k8s.io/kustomize/kustomize/v5/commands/internal/util"
  "sigs.k8s.io/kustomize/kyaml/filesys"
 )
@@ -17,8 +16,9 @@ const (
  fromFileFlag = "from-file"
  fromLiteralFlag = "from-literal"
  fromEnvFileFlag = "from-env-file"
- flagDisableNameSuffixHash = "disableNameSuffixHash"
- flagBehavior = "behavior"
+ disableNameSuffixHashFlag = "disableNameSuffixHash"
+ behaviorFlag = "behavior"
+ namespaceFlag = "namespace"
  flagFormat = "--%s=%s"
 )