// NewAdr creates a new, never before seen address, and increments the
// DB counter as well as putting it in the ram Adrs store, and returns it
func (ts *TxStore) NewAdr() (btcutil.Address, error) {
if ts.Param == nil {
return nil, fmt.Errorf("NewAdr error: nil param")
}
priv := new(hdkeychain.ExtendedKey)
var err error
var n uint32
var nAdr btcutil.Address
n = uint32(len(ts.Adrs))
priv, err = ts.rootPrivKey.Child(n + hdkeychain.HardenedKeyStart)
if err != nil {
return nil, err
}
nAdr, err = priv.Address(ts.Param)
if err != nil {
return nil, err
}
// total number of keys (now +1) into 4 bytes
var buf bytes.Buffer
err = binary.Write(&buf, binary.BigEndian, n+1)
if err != nil {
return nil, err
}
// write to db file
err = ts.StateDB.Update(func(btx *bolt.Tx) error {
sta := btx.Bucket(BKTState)
return sta.Put(KEYNumKeys, buf.Bytes())
})
if err != nil {
return nil, err
}
// add in to ram.
var ma MyAdr
ma.PkhAdr = nAdr
ma.KeyIdx = n
ts.Adrs = append(ts.Adrs, ma)
ts.localFilter.Add(ma.PkhAdr.ScriptAddress())
return nAdr, nil
}
