2 GoCheese -- Python private package repository and caching proxy
3 Copyright (C) 2019-2021 Sergey Matveev <stargrave@stargrave.org>
5 This program is free software: you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation, version 3 of the License.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program. If not, see <http://www.gnu.org/licenses/>.
27 var NoSync = os.Getenv("GOCHEESE_NO_SYNC") == "1"
29 func TempFile(dir string) (*os.File, error) {
30 // Assume that probability of suffix collision is negligible
31 suffix := strconv.FormatInt(time.Now().UnixNano()+int64(os.Getpid()), 16)
32 name := filepath.Join(dir, "nncp"+suffix)
33 return os.OpenFile(name, os.O_RDWR|os.O_CREATE|os.O_EXCL, os.FileMode(0666))
36 func DirSync(dirPath string) error {
40 fd, err := os.Open(dirPath)
52 func WriteFileSync(dirPath, filePath string, data []byte) error {
53 dst, err := TempFile(dirPath)
57 if _, err = dst.Write(data); err != nil {
63 if err = dst.Sync(); err != nil {
70 if err = os.Rename(dst.Name(), filePath); err != nil {
73 return DirSync(dirPath)