func handleRemove(conn http.ResponseWriter, req *http.Request, storage blobserver.Storage) {
if req.Method != "POST" {
log.Fatalf("Invalid method; handlers misconfigured")
}
configer, ok := storage.(blobserver.Configer)
if !ok {
conn.WriteHeader(http.StatusForbidden)
fmt.Fprintf(conn, "Remove handler's blobserver.Storage isn't a blobserver.Configuer; can't remove")
return
}
if !configer.Config().IsQueue {
conn.WriteHeader(http.StatusForbidden)
fmt.Fprintf(conn, "Can only remove blobs from a queue.\n")
return
}
n := 0
toRemove := make([]*blobref.BlobRef, 0)
toRemoveStr := make([]string, 0)
for {
n++
if n > maxRemovesPerRequest {
httputil.BadRequestError(conn,
fmt.Sprintf("Too many removes in this request; max is %d", maxRemovesPerRequest))
return
}
key := fmt.Sprintf("blob%v", n)
value := req.FormValue(key)
if value == "" {
break
}
ref := blobref.Parse(value)
if ref == nil {
httputil.BadRequestError(conn, "Bogus blobref for key "+key)
return
}
toRemove = append(toRemove, ref)
toRemoveStr = append(toRemoveStr, ref.String())
}
err := storage.Remove(toRemove)
if err != nil {
conn.WriteHeader(http.StatusInternalServerError)
log.Printf("Server error during remove: %v", err)
fmt.Fprintf(conn, "Server error")
return
}
reply := make(map[string]interface{}, 0)
reply["removed"] = toRemoveStr
httputil.ReturnJson(conn, reply)
}
