/
encoder.go
51 lines (43 loc) · 1.63 KB
/
encoder.go
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// Copyright 2017 AMIS Technologies
// This file is part of the go-ethereum library.
//
// The go-ethereum library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The go-ethereum library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
package extra
import (
"bytes"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/common/hexutil"
"github.com/ethereum/go-ethereum/rlp"
atypes "github.com/getamis/go-ethereum/core/types"
)
func Encode(vanity string, validators []common.Address) (string, error) {
newVanity, err := hexutil.Decode(vanity)
if err != nil {
return "", err
}
if len(newVanity) < atypes.IstanbulExtraVanity {
newVanity = append(newVanity, bytes.Repeat([]byte{0x00}, atypes.IstanbulExtraVanity-len(newVanity))...)
}
newVanity = newVanity[:atypes.IstanbulExtraVanity]
ist := &atypes.IstanbulExtra{
Validators: validators,
Seal: make([]byte, atypes.IstanbulExtraSeal),
CommittedSeal: [][]byte{},
}
payload, err := rlp.EncodeToBytes(&ist)
if err != nil {
return "", err
}
return "0x" + common.Bytes2Hex(append(newVanity, payload...)), nil
}