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sftp: Improve check for data subdirs

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This commit is contained in:
Alexander Neumann 2017-07-16 15:10:06 +02:00
parent 2778ac21de
commit 4ad33d3c3b
1 changed files with 45 additions and 13 deletions
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54
src/restic/backend/sftp/sftp.go
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@ -126,20 +126,56 @@ func Open(cfg Config) (*SFTP, error) {
debug.Log("layout: %v\n", sftp.Layout)
// create paths for data and refs. mkdirAll does nothing if the paths already exist.
for _, d := range sftp.Paths() {
err = sftp.mkdirAll(d, backend.Modes.Dir)
debug.Log("mkdirAll %v -> %v", d, err)
if err != nil {
if err := sftp.checkDataSubdirs(); err != nil {
debug.Log("checkDataSubdirs returned %v", err)
return nil, err
}
}
sftp.Config = cfg
sftp.p = cfg.Path
return sftp, nil
}
func (r *SFTP) checkDataSubdirs() error {
datadir := r.Dirname(restic.Handle{Type: restic.DataFile})
// check if all paths for data/ exist
entries, err := r.c.ReadDir(datadir)
if err != nil {
return err
}
subdirs := make(map[string]struct{}, len(entries))
for _, entry := range entries {
subdirs[entry.Name()] = struct{}{}
}
for i := 0; i < 256; i++ {
subdir := fmt.Sprintf("%02x", i)
if _, ok := subdirs[subdir]; !ok {
debug.Log("subdir %v is missing, creating", subdir)
err := r.mkdirAll(path.Join(datadir, subdir), backend.Modes.Dir)
if err != nil {
return err
}
}
}
return nil
}
func (r *SFTP) mkdirAllDataSubdirs() error {
for _, d := range r.Paths() {
err := r.mkdirAll(d, backend.Modes.Dir)
debug.Log("mkdirAll %v -> %v", d, err)
if err != nil {
return err
}
}
return nil
}
// Join combines path components with slashes (according to the sftp spec).
func (r *SFTP) Join(p ...string) string {
return path.Join(p...)
@ -211,13 +247,9 @@ func Create(cfg Config) (*SFTP, error) {
}
// create paths for data and refs
for _, d := range sftp.Paths() {
err = sftp.mkdirAll(d, backend.Modes.Dir)
debug.Log("mkdirAll %v -> %v", d, err)
if err != nil {
if err = sftp.mkdirAllDataSubdirs(); err != nil {
return nil, err
}
}
err = sftp.Close()
if err != nil {