feat: add remove configmap command

go.work.sum

@@ -31,19 +31,28 @@ github.com/stretchr/testify v1.8.4/go.mod h1:sz/lmYIOXD/1dqDmKjjqLyZ2RngseejIcXl
 github.com/subosito/gotenv v1.2.0 h1:Slr1R9HxAlEKefgq5jn9U+DnETlIUa6HfgEzj0g5d7s=
 github.com/yuin/goldmark v1.4.13/go.mod h1:6yULJ656Px+3vBD8DxQVa3kxgyrAnzto9xy5taEt/CY=
 go.starlark.net v0.0.0-20190528202925-30ae18b8564f/go.mod h1:c1/X6cHgvdXj6pUlmWKMkuqRnW4K8x2vwt6JAaaircg=
+golang.org/x/crypto v0.13.0/go.mod h1:y6Z2r+Rw4iayiXXAIxJIDAJ1zMW4yaTpebo8fPOliYc=
 golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4/go.mod h1:jJ57K6gSWd91VN4djpZkiMVwK6gcyfeH4XE8wZrZaV4=
 golang.org/x/mod v0.8.0/go.mod h1:iBbtSCu2XBx23ZKBPSOrRkjjQPZFPuis4dIYUhu/chs=
+golang.org/x/mod v0.12.0/go.mod h1:iBbtSCu2XBx23ZKBPSOrRkjjQPZFPuis4dIYUhu/chs=
 golang.org/x/net v0.4.0/go.mod h1:MBQ8lrhLObU/6UmLb4fmbmk5OcyYmqtbGd/9yIeKjEE=
+golang.org/x/net v0.15.0/go.mod h1:idbUs1IY1+zTqbi8yxTbhexhEEk5ur9LInksu6HrEpk=
 golang.org/x/sync v0.1.0/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sync v0.3.0/go.mod h1:FU7BRWz2tNW+3quACPkgCx/L+uEAv1htQ0V83Z9Rj+Y=
 golang.org/x/sys v0.0.0-20220715151400-c0bba94af5f8/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.3.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.5.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/term v0.0.0-20220526004731-065cf7ba2467/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=
+golang.org/x/term v0.12.0/go.mod h1:owVbMEjm3cBLCHdkQu9b1opXd4ETQWc3BhuQGKgXgvU=
 golang.org/x/text v0.5.0/go.mod h1:mrYo+phRRbMaCq/xk9113O4dZlRixOauAjOtrjsXDZ8=
+golang.org/x/text v0.13.0 h1:ablQoSUd0tRdKxZewP80B+BaqeKJuVhuRxj/dkrun3k=
+golang.org/x/text v0.13.0/go.mod h1:TvPlkZtksWOMsz7fbANvkp4WM8x/WCo/om8BMLbz+aE=
 golang.org/x/tools v0.1.12/go.mod h1:hNGJHUnrk76NpqgfD5Aqm5Crs+Hm0VOH/i9J2+nxYbc=
 golang.org/x/tools v0.4.0/go.mod h1:UE5sM2OK9E/d67R0ANs2xJizIymRP5gJU295PvKXxjQ=
 golang.org/x/tools v0.6.0/go.mod h1:Xwgl3UAJ/d3gWutnCtw505GrjyAbvKui8lOU390QaIU=
 golang.org/x/tools v0.7.0/go.mod h1:4pg6aUX35JBAogB10C9AtvVL+qowtN4pT3CGSQex14s=
+golang.org/x/tools v0.13.0/go.mod h1:HvlwmtVNQAhOuCjW7xxvovg8wbNq7LwfXh/k7wXUl58=
 golang.org/x/xerrors v0.0.0-20220907171357-04be3eba64a2/go.mod h1:K8+ghG5WaK9qNqU5K3HdILfMLy1f3aNYFI/wnl100a8=
 google.golang.org/protobuf v1.28.1/go.mod h1:HV8QOd/L58Z+nl8r43ehVNZIU/HEI6OcFqwMG9pJV4I=
 gopkg.in/ini.v1 v1.51.0 h1:AQvPpx3LzTDM0AjnIRlVFwFFGC+npRopjZxLJj6gdno=

kustomize/commands/edit/remove/all.go

@@ -22,6 +22,9 @@ func NewCmdRemove(
 	kustomize edit remove resource {filepath} {filepath}
 	kustomize edit remove resource {pattern}
 
+	# Removes one or more configmap from the kustomization file
+	kustomize edit remove configmap {name1},{name2}
+
 	# Removes one or more patches from the kustomization file
 	kustomize edit remove patch --path {filepath} --group {target group name} --version {target version}
 
@@ -37,6 +40,7 @@ func NewCmdRemove(
 		Args: cobra.MinimumNArgs(1),
 	}
 	c.AddCommand(
+		newCmdRemoveConfigMap(fSys),
 		newCmdRemoveResource(fSys),
 		newCmdRemoveLabel(fSys, v.MakeLabelNameValidator()),
 		newCmdRemoveAnnotation(fSys, v.MakeAnnotationNameValidator()),

kustomize/commands/edit/remove/removeconfigmap.go

@@ -0,0 +1,99 @@
+// Copyright 2023 The Kubernetes Authors.
+// SPDX-License-Identifier: Apache-2.0
+
+package remove
+
+import (
+	"errors"
+	"fmt"
+	"log"
+	"strings"
+
+	"github.com/spf13/cobra"
+	"sigs.k8s.io/kustomize/api/konfig"
+	"sigs.k8s.io/kustomize/api/types"
+	"sigs.k8s.io/kustomize/kustomize/v5/commands/internal/kustfile"
+	"sigs.k8s.io/kustomize/kyaml/filesys"
+)
+
+type removeConfigMapOptions struct {
+	configMapNamesToRemove []string
+}
+
+// newCmdRemoveResource remove the name of a file containing a resource to the kustomization file.
+func newCmdRemoveConfigMap(fSys filesys.FileSystem) *cobra.Command {
+	var o removeConfigMapOptions
+
+	cmd := &cobra.Command{
+		Use: "configmap",
+		Short: "Removes the specified configmap(s) from " +
+			konfig.DefaultKustomizationFileName(),
+		Long: "",
+		Example: `
+		remove configmap my-configmap
+		`,
+		RunE: func(cmd *cobra.Command, args []string) error {
+			err := o.Validate(args)
+			if err != nil {
+				return err
+			}
+			return o.RunRemoveConfigMap(fSys)
+		},
+	}
+	return cmd
+}
+
+// Validate validates removeConfigMap command.
+func (o *removeConfigMapOptions) Validate(args []string) error {
+	switch {
+	case len(args) == 0:
+		return errors.New("at least one configmap name must be specified")
+	case len(args) > 1:
+		return fmt.Errorf("too many arguments: %s; to provide multiple configmaps to remove, please separate configmap names by commas", args)
+	}
+
+	o.configMapNamesToRemove = strings.Split(args[0], ",")
+	return nil
+}
+
+// RunRemoveConfigMap runs ConfigMap command (do real work).
+func (o *removeConfigMapOptions) RunRemoveConfigMap(fSys filesys.FileSystem) error {
+	mf, err := kustfile.NewKustomizationFile(fSys)
+	if err != nil {
+		return fmt.Errorf("could not read kustomization file: %w", err)
+	}
+
+	m, err := mf.Read()
+	if err != nil {
+		return fmt.Errorf("could not read kustomization file contents: %w", err)
+	}
+
+	foundConfigMaps := make(map[string]struct{})
+
+	newConfigMaps := make([]types.ConfigMapArgs, 0, len(m.ConfigMapGenerator))
+	for _, currentConfigMap := range m.ConfigMapGenerator {
+		if kustfile.StringInSlice(currentConfigMap.Name, o.configMapNamesToRemove) {
+			foundConfigMaps[currentConfigMap.Name] = struct{}{}
+			continue
+		}
+		newConfigMaps = append(newConfigMaps, currentConfigMap)
+	}
+
+	if len(foundConfigMaps) == 0 {
+		return fmt.Errorf("no specified configmap(s) were found in the %s file",
+			konfig.DefaultKustomizationFileName())
+	}
+
+	for _, name := range o.configMapNamesToRemove {
+		if _, found := foundConfigMaps[name]; !found {
+			log.Printf("configmap %s doesn't exist in kustomization file", name)
+		}
+	}
+
+	m.ConfigMapGenerator = newConfigMaps
+	err = mf.Write(m)
+	if err != nil {
+		return fmt.Errorf("failed to write kustomization file: %w", err)
+	}
+	return nil
+}

kustomize/commands/edit/remove/removeconfigmap_test.go

@@ -0,0 +1,116 @@
+// Copyright 2023 The Kubernetes Authors.
+// SPDX-License-Identifier: Apache-2.0
+
+package remove //nolint:testpackage
+
+import (
+	"fmt"
+	"testing"
+
+	"github.com/stretchr/testify/require"
+	testutils_test "sigs.k8s.io/kustomize/kustomize/v5/commands/internal/testutils"
+	"sigs.k8s.io/kustomize/kyaml/filesys"
+)
+
+func TestRemoveConfigMap(t *testing.T) {
+	const configMapName01 = "example-configmap-01"
+	const configMapName02 = "example-configmap-02"
+
+	tests := map[string]struct {
+		input          string
+		args           []string
+		expectedOutput string
+		expectedErr    string
+	}{
+		"happy path": {
+			input: fmt.Sprintf(`
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+configMapGenerator:
+- name: %s
+  files:
+  - application.properties
+`, configMapName01),
+			args: []string{configMapName01},
+			expectedOutput: `
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+`,
+		},
+		"multiple": {
+			input: fmt.Sprintf(`
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+configMapGenerator:
+- name: %s
+  files:
+  - application.properties
+- name: %s
+  files:
+  - application.properties
+`, configMapName01, configMapName02),
+			args: []string{
+				fmt.Sprintf("%s,%s", configMapName01, configMapName02),
+			},
+			expectedOutput: `
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+`,
+		},
+		"miss": {
+			input: fmt.Sprintf(`
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+configMapGenerator:
+- name: %s
+  files:
+  - application.properties
+`, configMapName01),
+			args:        []string{"foo"},
+			expectedErr: "no specified configmap(s) were found",
+		},
+		"no configmap name specified": {
+			args:        []string{},
+			expectedErr: "at least one configmap name must be specified",
+		},
+		"too many configmap names specified": {
+			args:        []string{"test1", "test2"},
+			expectedErr: "too many arguments",
+		},
+		"one existing and one non-existing": {
+			input: fmt.Sprintf(`
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+configMapGenerator:
+- name: %s
+  files:
+  - application.properties
+`, configMapName01),
+			args: []string{fmt.Sprintf("%s,%s", configMapName01, "foo")},
+			expectedOutput: `
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+`,
+		},
+	}
+
+	for name, tc := range tests {
+		t.Run(name, func(t *testing.T) {
+			fSys := filesys.MakeFsInMemory()
+			testutils_test.WriteTestKustomizationWith(fSys, []byte(tc.input))
+			cmd := newCmdRemoveConfigMap(fSys)
+			err := cmd.RunE(cmd, tc.args)
+
+			if tc.expectedErr != "" {
+				require.Error(t, err)
+				require.Contains(t, err.Error(), tc.expectedErr)
+				return
+			}
+
+			require.NoError(t, err)
+			content, err := testutils_test.ReadTestKustomization(fSys)
+			require.NoError(t, err)
+			require.Equal(t, tc.expectedOutput, string(content))
+		})
+	}
+}

kustomize/go.mod

@@ -33,7 +33,7 @@ require (
 	github.com/pmezard/go-difflib v1.0.0 // indirect
 	github.com/xlab/treeprint v1.2.0 // indirect
 	go.starlark.net v0.0.0-20200306205701-8dd3e2ee1dd5 // indirect
-	golang.org/x/sys v0.8.0 // indirect
+	golang.org/x/sys v0.12.0 // indirect
 	google.golang.org/protobuf v1.30.0 // indirect
 	gopkg.in/evanphx/json-patch.v5 v5.6.0 // indirect
 	gopkg.in/inf.v0 v0.9.1 // indirect

kustomize/go.sum

@@ -67,8 +67,8 @@ github.com/xlab/treeprint v1.2.0/go.mod h1:gj5Gd3gPdKtR1ikdDK6fnFLdmIS0X30kTTuNd
 go.starlark.net v0.0.0-20200306205701-8dd3e2ee1dd5 h1:+FNtrFTmVw0YZGpBGX56XDee331t6JAXeK2bcyhLOOc=
 go.starlark.net v0.0.0-20200306205701-8dd3e2ee1dd5/go.mod h1:nmDLcffg48OtT/PSW0Hg7FvpRQsQh5OSqIylirxKC7o=
 golang.org/x/sys v0.0.0-20191002063906-3421d5a6bb1c/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.8.0 h1:EBmGv8NaZBZTWvrbjNoL6HVt+IVy3QDQpJs7VRIw3tU=
-golang.org/x/sys v0.8.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.12.0 h1:CM0HF96J0hcLAwsHPJZjfdNzs0gftsLfgKt57wWHJ0o=
+golang.org/x/sys v0.12.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/text v0.8.0 h1:57P1ETyNKtuIjB4SRd15iJxuhj8Gc416Y78H3qgMh68=
 golang.org/x/text v0.8.0/go.mod h1:e1OnstbJyHTd6l/uOt8jFFHp6TRDWZR/bV3emEE/zU8=
 golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=