func getTime(tx *bolt.Tx, thread string) (int64, error) {
var stamp int64
k := db.MustTob(thread)
_, err := db.Get(tx, "keylibTS", k, &stamp)
return stamp, err
}
//GetFromDB gets DB db.
func GetFromDB(tx *bolt.Tx, h *Head) (*DB, error) {
d := DB{}
_, err := db.Get(tx, "record", h.ToKey(), &d)
return &d, err
}
func getThread(tx *bolt.Tx, stamp int64) (string, error) {
var thread string
k := db.MustTob(stamp)
_, err := db.Get(tx, "keylibST", k, &thread)
return thread, err
}