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96 lines
2.2 KiB
Go
96 lines
2.2 KiB
Go
// SPDX-License-Identifier: AGPL-3.0-only
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// Provenance-includes-location: https://github.com/kubernetes-sigs/apiserver-runtime/blob/main/pkg/experimental/storage/filepath/jsonfile_rest.go
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// Provenance-includes-license: Apache-2.0
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// Provenance-includes-copyright: The Kubernetes Authors.
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package file
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import (
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"bytes"
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"errors"
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"os"
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"path/filepath"
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"k8s.io/apimachinery/pkg/runtime"
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)
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func (s *Storage) filePath(key string) string {
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return key + ".json"
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}
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func writeFile(codec runtime.Codec, path string, obj runtime.Object) error {
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buf := new(bytes.Buffer)
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if err := codec.Encode(obj, buf); err != nil {
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return err
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}
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return os.WriteFile(path, buf.Bytes(), 0600)
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}
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func readFile(codec runtime.Codec, path string, newFunc func() runtime.Object) (runtime.Object, error) {
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content, err := os.ReadFile(filepath.Clean(path))
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if err != nil {
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return nil, err
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}
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newObj := newFunc()
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decodedObj, _, err := codec.Decode(content, nil, newObj)
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if err != nil {
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return nil, err
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}
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return decodedObj, nil
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}
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func readDirRecursive(codec runtime.Codec, path string, newFunc func() runtime.Object) ([]runtime.Object, error) {
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var objs []runtime.Object
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err := filepath.Walk(path, func(path string, info os.FileInfo, err error) error {
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if err != nil {
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return err
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}
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if info.IsDir() || filepath.Ext(path) != ".json" {
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return nil
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}
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obj, err := readFile(codec, path, newFunc)
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if err != nil {
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return err
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}
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objs = append(objs, obj)
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return nil
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})
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if err != nil {
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if errors.Is(err, os.ErrNotExist) {
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return objs, nil
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}
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return nil, err
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}
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return objs, nil
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}
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func deleteFile(path string) error {
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return os.Remove(path)
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}
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func exists(filepath string) bool {
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_, err := os.Stat(filepath)
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return err == nil
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}
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func ensureDir(dirname string) error {
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if !exists(dirname) {
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return os.MkdirAll(dirname, 0700)
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}
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return nil
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}
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func isUnchanged(codec runtime.Codec, obj runtime.Object, newObj runtime.Object) (bool, error) {
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buf := new(bytes.Buffer)
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if err := codec.Encode(obj, buf); err != nil {
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return false, err
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}
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newBuf := new(bytes.Buffer)
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if err := codec.Encode(newObj, newBuf); err != nil {
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return false, err
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}
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return bytes.Equal(buf.Bytes(), newBuf.Bytes()), nil
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}
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