68 lines
1.2 KiB
Go
68 lines
1.2 KiB
Go
package fileauthcache
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import (
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"encoding/json"
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"os"
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"path/filepath"
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"sync"
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"git.icedream.tech/icedream/oneandone-billing-mailer/pkg/auth/authcache"
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"golang.org/x/oauth2"
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)
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type fileAuthCache struct {
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filePath string
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cacheLock sync.Mutex
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}
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func NewFileAuthCache(filePath string) authcache.Cache {
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return &fileAuthCache{
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filePath: filePath,
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}
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}
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func (ts *fileAuthCache) Persist(token *oauth2.Token) (err error) {
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ts.cacheLock.Lock()
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defer ts.cacheLock.Unlock()
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f, err := os.CreateTemp(filepath.Dir(ts.filePath), "")
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if err != nil {
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return err
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}
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if err = f.Chmod(0o600); err != nil {
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f.Close()
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return err
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}
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if err = json.NewEncoder(f).Encode(token); err != nil {
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f.Close()
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return err
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}
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if err = f.Close(); err != nil {
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return err
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}
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err = os.Rename(f.Name(), ts.filePath)
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return err
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}
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func (ts *fileAuthCache) Fetch() (token *oauth2.Token, err error) {
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f, err := os.OpenFile(ts.filePath, os.O_RDONLY, 0o600)
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if os.IsNotExist(err) {
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// Treat as no existing token found
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return nil, nil
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}
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if err != nil {
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return nil, err
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}
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decodedToken := new(oauth2.Token)
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if err = json.NewDecoder(f).Decode(decodedToken); err != nil {
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return nil, err
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}
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return decodedToken, nil
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}
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