kubectx/cmd/kubens/fzf.go
Suleiman Dibirov b5daf2cef7
feat(kubens): added force flag to switch namespaces even if it doesn'… (#416)
* feat(kubens): added force flag to switch namespaces even if it doesn't exist

* Merged lines

* fixed README.md and flags.go

* updated flags.go, flags_test.go
2024-07-09 21:38:40 -07:00

75 lines
2.1 KiB
Go

// Copyright 2021 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package main
import (
"bytes"
"fmt"
"io"
"os"
"os/exec"
"strings"
"github.com/pkg/errors"
"github.com/ahmetb/kubectx/internal/cmdutil"
"github.com/ahmetb/kubectx/internal/env"
"github.com/ahmetb/kubectx/internal/kubeconfig"
"github.com/ahmetb/kubectx/internal/printer"
)
type InteractiveSwitchOp struct {
SelfCmd string
}
// TODO(ahmetb) This method is heavily repetitive vs kubectx/fzf.go.
func (op InteractiveSwitchOp) Run(_, stderr io.Writer) error {
// parse kubeconfig just to see if it can be loaded
kc := new(kubeconfig.Kubeconfig).WithLoader(kubeconfig.DefaultLoader)
if err := kc.Parse(); err != nil {
if cmdutil.IsNotFoundErr(err) {
printer.Warning(stderr, "kubeconfig file not found")
return nil
}
return errors.Wrap(err, "kubeconfig error")
}
defer kc.Close()
cmd := exec.Command("fzf", "--ansi", "--no-preview")
var out bytes.Buffer
cmd.Stdin = os.Stdin
cmd.Stderr = stderr
cmd.Stdout = &out
cmd.Env = append(os.Environ(),
fmt.Sprintf("FZF_DEFAULT_COMMAND=%s", op.SelfCmd),
fmt.Sprintf("%s=1", env.EnvForceColor))
if err := cmd.Run(); err != nil {
if _, ok := err.(*exec.ExitError); !ok {
return err
}
}
choice := strings.TrimSpace(out.String())
if choice == "" {
return errors.New("you did not choose any of the options")
}
name, err := switchNamespace(kc, choice, false)
if err != nil {
return errors.Wrap(err, "failed to switch namespace")
}
printer.Success(stderr, "Active namespace is \"%s\".", printer.SuccessColor.Sprint(name))
return nil
}