func (ds *Directory) statUnlocked(key string) (store.Stat, string, error) {
fh, path, err := ds.findAndOpen(key)
if err != nil {
return store.Stat{}, "", err
}
if fh == nil {
return store.Stat{}, "", store.ErrNotFound
}
defer fh.Close()
st := store.Stat{}
_, err = fh.ReadAt(st.SHA256[:], 8)
if err != nil {
return store.Stat{}, "", err
}
fi, err := fh.Stat()
if err != nil {
return store.Stat{}, "", err
}
st.Size = fi.Size() - 40
st.WriteTime = fi.ModTime().Unix()
return st, path, nil
}
func (cc *Client) Stat(key string, cancel <-chan struct{}) (store.Stat, error) {
resp, err := cc.startReq("HEAD", cc.url+url.QueryEscape(key), nil, nil, cancel)
if err != nil {
return store.Stat{}, err
}
defer resp.Body.Close()
if resp.StatusCode == 404 {
return store.Stat{}, store.ErrNotFound
}
if resp.StatusCode < 200 || resp.StatusCode >= 300 {
return store.Stat{}, httputil.ReadResponseAsError(resp)
}
st := store.Stat{}
if sha := resp.Header.Get("X-Content-Sha256"); sha != "" {
shaBytes, err := hex.DecodeString(sha)
if err != nil || len(shaBytes) != 32 {
return store.Stat{}, ErrUnparsableSHAResponse
}
copy(st.SHA256[:], shaBytes)
}
if timeStr := resp.Header.Get("Last-Modified"); timeStr != "" {
t, err := time.Parse(http.TimeFormat, timeStr)
if err == nil {
st.WriteTime = t.Unix()
}
}
st.Size = resp.ContentLength
return st, nil
}