mirror of
https://github.com/ahmetb/kubectx.git
synced 2026-03-18 03:42:12 +00:00
860e09775b
Modernize the codebase to use idiomatic Go 1.25 patterns, removing deprecated APIs and reducing external dependencies.
- Replace deprecated `io/ioutil` with `os.ReadFile`, `os.WriteFile`, `os.MkdirTemp`, `os.CreateTemp`
- Replace `interface{}` with `any` (Go 1.18+)
- Remove `github.com/pkg/errors` dependency entirely, using stdlib `fmt.Errorf` with `%w` and `errors.New`
- Use `errors.As()` instead of direct type assertions on error values
- Use `strings.Cut()` for delimiter parsing instead of `strings.Split` + length check
- Use `slices.Contains()` for linear search in `ContextExists()`
- Use `t.Setenv()` and `t.TempDir()` in tests instead of manual env save/restore and temp dir cleanup
- Delete unused `internal/testutil/tempfile.go` helper
- Update GitHub Actions CI and release workflows from Go 1.22 to 1.25
Net result: -70 lines, 1 fewer external dependency.
Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>
73 lines
1.8 KiB
Go
73 lines
1.8 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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"os"
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"path/filepath"
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"runtime"
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"strings"
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"github.com/ahmetb/kubectx/internal/cmdutil"
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)
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var defaultDir = filepath.Join(cmdutil.HomeDir(), ".kube", "kubens")
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type NSFile struct {
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dir string
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ctx string
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}
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func NewNSFile(ctx string) NSFile { return NSFile{dir: defaultDir, ctx: ctx} }
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func (f NSFile) path() string {
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fn := f.ctx
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if isWindows() {
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// bug 230: eks clusters contain ':' in ctx name, not a valid file name for win32
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fn = strings.ReplaceAll(fn, ":", "__")
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}
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return filepath.Join(f.dir, fn)
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}
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// Load reads the previous namespace setting, or returns empty if not exists.
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func (f NSFile) Load() (string, error) {
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b, err := os.ReadFile(f.path())
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if err != nil {
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if os.IsNotExist(err) {
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return "", nil
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}
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return "", err
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}
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return string(bytes.TrimSpace(b)), nil
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}
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// Save stores the previous namespace information in the file.
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func (f NSFile) Save(value string) error {
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d := filepath.Dir(f.path())
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if err := os.MkdirAll(d, 0755); err != nil {
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return err
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}
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return os.WriteFile(f.path(), []byte(value), 0644)
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}
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// isWindows determines if the process is running on windows OS.
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func isWindows() bool {
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if os.Getenv("_FORCE_GOOS") == "windows" { // for testing
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return true
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}
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return runtime.GOOS == "windows"
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}
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