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https://github.com/octoleo/restic.git
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9be24a1c9f
This commits adds rudimentary support for a cache directory, enabled by default. The cache directory is created if it does not exist. The cache is used if there's anything in it, newly created snapshot and index files are written to the cache automatically.
50 lines
1.1 KiB
Go
50 lines
1.1 KiB
Go
package cache
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import (
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"os"
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"path/filepath"
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"github.com/pkg/errors"
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"github.com/restic/restic/internal/debug"
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"github.com/restic/restic/internal/fs"
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)
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// getXDGCacheDir returns the cache directory according to XDG basedir spec, see
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// http://standards.freedesktop.org/basedir-spec/basedir-spec-latest.html
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func getXDGCacheDir() (string, error) {
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xdgcache := os.Getenv("XDG_CACHE_HOME")
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home := os.Getenv("HOME")
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if xdgcache == "" && home == "" {
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return "", errors.New("unable to locate cache directory (XDG_CACHE_HOME and HOME unset)")
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}
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cachedir := ""
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if xdgcache != "" {
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cachedir = filepath.Join(xdgcache, "restic")
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} else if home != "" {
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cachedir = filepath.Join(home, ".cache", "restic")
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}
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fi, err := fs.Stat(cachedir)
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if os.IsNotExist(errors.Cause(err)) {
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err = fs.MkdirAll(cachedir, 0700)
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if err != nil {
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return "", errors.Wrap(err, "MkdirAll")
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}
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fi, err = fs.Stat(cachedir)
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debug.Log("create cache dir %v", cachedir)
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}
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if err != nil {
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return "", errors.Wrap(err, "Stat")
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}
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if !fi.IsDir() {
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return "", errors.Errorf("cache dir %v is not a directory", cachedir)
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}
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return cachedir, nil
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}
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