mirror of
https://github.com/ahmetb/kubectx.git
synced 2026-03-17 19:32:27 +00:00
83 lines
2.3 KiB
Go
83 lines
2.3 KiB
Go
// Copyright 2021 Google LLC
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package main
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import (
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"bytes"
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"errors"
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"fmt"
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"io"
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"os"
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"os/exec"
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"strings"
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"github.com/ahmetb/kubectx/internal/cmdutil"
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"github.com/ahmetb/kubectx/internal/env"
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"github.com/ahmetb/kubectx/internal/kubeconfig"
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"github.com/ahmetb/kubectx/internal/printer"
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)
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type InteractiveSwitchOp struct {
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SelfCmd string
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}
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// TODO(ahmetb) This method is heavily repetitive vs kubectx/fzf.go.
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func (op InteractiveSwitchOp) Run(_, stderr io.Writer) error {
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// parse kubeconfig just to see if it can be loaded
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kc := new(kubeconfig.Kubeconfig).WithLoader(kubeconfig.DefaultLoader)
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defer kc.Close()
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if err := kc.Parse(); err != nil {
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if cmdutil.IsNotFoundErr(err) {
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printer.Warning(stderr, "kubeconfig file not found")
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return nil
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}
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return fmt.Errorf("kubeconfig error: %w", err)
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}
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ctxNames, err := kc.ContextNames()
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if err != nil {
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return fmt.Errorf("failed to get context names: %w", err)
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}
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if len(ctxNames) == 0 {
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return errors.New("no contexts found in the kubeconfig file")
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}
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cmd := exec.Command("fzf", "--ansi", "--no-preview")
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var out bytes.Buffer
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cmd.Stdin = os.Stdin
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cmd.Stderr = stderr
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cmd.Stdout = &out
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cmd.Env = append(os.Environ(),
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fmt.Sprintf("FZF_DEFAULT_COMMAND=%s", op.SelfCmd),
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fmt.Sprintf("%s=1", env.EnvForceColor))
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if err := cmd.Run(); err != nil {
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var exitErr *exec.ExitError
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if !errors.As(err, &exitErr) {
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return err
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}
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}
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choice := strings.TrimSpace(out.String())
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if choice == "" {
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return errors.New("you did not choose any of the options")
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}
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name, err := switchNamespace(kc, choice, false)
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if err != nil {
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return fmt.Errorf("failed to switch namespace: %w", err)
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}
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_ = printer.Success(stderr, "Active namespace is \"%s\".", printer.SuccessColor.Sprint(name))
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return nil
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}
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