feat: add remove secret command

(cherry picked from commit 63d44f5e88)

chore: fix for lint

(cherry picked from commit 21edcd0582)

fix: correct lint issues

(cherry picked from commit 0c87856b2c)

fix: Resolve conversations

(cherry picked from commit 9ee5ab3a70)

kustomize/commands/edit/remove/removesecret.go

@@ -0,0 +1,92 @@
+// Copyright 2019 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/v4/commands/internal/kustfile"
+	"sigs.k8s.io/kustomize/kyaml/filesys"
+)
+
+type removeSecretOptions struct {
+	secretNamesToRemove []string
+}
+
+// newCmdRemoveSecret remove the name of a file containing a secret to the kustomization file.
+func newCmdRemoveSecret(fSys filesys.FileSystem) *cobra.Command {
+	var o removeSecretOptions
+
+	cmd := &cobra.Command{
+		Use: "secret",
+		Short: "Removes specified secret" +
+			konfig.DefaultKustomizationFileName(),
+		Example: `
+		remove secret my-secret
+		`,
+		RunE: func(cmd *cobra.Command, args []string) error {
+			err := o.Validate(args)
+			if err != nil {
+				return err
+			}
+			return o.RunRemoveSecret(fSys)
+		},
+	}
+	return cmd
+}
+
+// Validate validates removeSecret command.
+func (o *removeSecretOptions) Validate(args []string) error {
+	if len(args) == 0 {
+		return errors.New("must specify a Secret name")
+	}
+	if len(args) > 1 {
+		return fmt.Errorf("too many arguments: %s; to provide multiple Secrets to remove, please separate Secret names by commas", args)
+	}
+	o.secretNamesToRemove = strings.Split(args[0], ",")
+	return nil
+}
+
+// RunRemoveSecret runs Secret command (do real work).
+func (o *removeSecretOptions) RunRemoveSecret(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: %w", err)
+	}
+
+	foundSecrets := make(map[string]struct{})
+
+	newSecrets := make([]types.SecretArgs, 0, len(m.SecretGenerator))
+	for _, currentSecret := range m.SecretGenerator {
+		if kustfile.StringInSlice(currentSecret.Name, o.secretNamesToRemove) {
+			foundSecrets[currentSecret.Name] = struct{}{}
+			continue
+		}
+		newSecrets = append(newSecrets, currentSecret)
+	}
+
+	for _, name := range o.secretNamesToRemove {
+		if _, found := foundSecrets[name]; !found {
+			log.Printf("secret %s doesn't exist in kustomization file", name)
+		}
+	}
+	m.SecretGenerator = newSecrets
+
+	err = mf.Write(m)
+	if err != nil {
+		return fmt.Errorf("secret cannot write back to file, got %w", err)
+	}
+	return nil
+}