// SlotHandler handles requests to GET /item/:id/*slot
// and requests to HEAD /item/:id/*slot
func (s *RESTServer) SlotHandler(w http.ResponseWriter, r *http.Request, ps httprouter.Params) {
id := ps.ByName("id")
// the star parameter in httprouter returns the leading slash
slot := ps.ByName("slot")[1:]
item, err := s.Items.Item(id)
if err != nil {
// if item store use disabled, return 503
if err == items.ErrNoStore {
w.WriteHeader(503)
log.Printf("GET/HEAD /item/%s/%s returns 503 - tape disabled", id, slot)
} else {
w.WriteHeader(404)
}
fmt.Fprintln(w, err.Error())
return
}
// if we have the empty path, reroute to the item metadata handler
if slot == "" {
s.ItemHandler(w, r, ps)
return
}
// slot might have a "@nnn" version prefix
bid := item.BlobByExtendedSlot(slot)
if bid == 0 {
w.WriteHeader(404)
fmt.Fprintf(w, "Invalid Version")
return
}
w.Header().Set("X-Content-Sha256", hex.EncodeToString(item.Blobs[bid-1].SHA256))
w.Header().Set("Location", fmt.Sprintf("/item/%s/@blob/%d", id, bid))
s.getblob(w, r, id, items.BlobID(bid))
}
// BlobHandler handles requests to GET /blob/:id/:bid
func (s *RESTServer) BlobHandler(w http.ResponseWriter, r *http.Request, ps httprouter.Params) {
id := ps.ByName("id")
bid, err := strconv.ParseInt(ps.ByName("bid"), 10, 0)
if err != nil || bid <= 0 {
w.WriteHeader(404)
fmt.Fprintln(w, err)
return
}
s.getblob(w, r, id, items.BlobID(bid))
}
func doblob(r *items.Store, id, blob string) {
bid, _ := strconv.Atoi(blob)
rc, _, err := r.Blob(id, items.BlobID(bid))
if err != nil {
fmt.Printf("%s / %d: Error %s\n", id, bid, err.Error())
} else {
io.Copy(os.Stdout, rc)
rc.Close()
}
}
// add all the files to this item. Directories are automatically recursed into.
// Files and directories which begin with a dot are skipped.
func dodelete(r *items.Store, id string, delblobs []string) {
var delbid []items.BlobID
for _, blobid := range delblobs {
bid, err := strconv.Atoi(blobid)
if err != nil {
fmt.Println(err.Error())
return
}
delbid = append(delbid, items.BlobID(bid))
}
tx, err := r.Open(id, *creator)
if err != nil {
fmt.Println(err.Error())
return
}
for _, bid := range delbid {
tx.DeleteBlob(bid)
// TODO(dbrower): also remove any slots pointing to this blob
}
err = tx.Close()
if err != nil {
fmt.Println(err.Error())
}
}