/
state.go
53 lines (46 loc) · 1.53 KB
/
state.go
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// 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 (
"io/ioutil"
"os"
"path/filepath"
"github.com/pkg/errors"
"github.com/ahmetb/kubectx/internal/cmdutil"
)
func kubectxPrevCtxFile() (string, error) {
home := cmdutil.HomeDir()
if home == "" {
return "", errors.New("HOME or USERPROFILE environment variable not set")
}
return filepath.Join(home, ".kube", "kubectx"), nil
}
// readLastContext returns the saved previous context
// if the state file exists, otherwise returns "".
func readLastContext(path string) (string, error) {
b, err := ioutil.ReadFile(path)
if os.IsNotExist(err) {
return "", nil
}
return string(b), err
}
// writeLastContext saves the specified value to the state file.
// It creates missing parent directories.
func writeLastContext(path, value string) error {
dir := filepath.Dir(path)
if err := os.MkdirAll(dir, 0755); err != nil {
return errors.Wrap(err, "failed to create parent directories")
}
return ioutil.WriteFile(path, []byte(value), 0644)
}