123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566 |
- // Copyright 2017 The go-ethereum Authors
- // 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 validator
- import (
- "bytes"
- "github.com/ethereum/go-ethereum/common"
- "github.com/ethereum/go-ethereum/consensus/istanbul"
- )
- func New(addr common.Address) istanbul.Validator {
- return &defaultValidator{
- address: addr,
- }
- }
- func NewSet(addrs []common.Address, policy *istanbul.ProposerPolicy) istanbul.ValidatorSet {
- return newDefaultSet(addrs, policy)
- }
- func ExtractValidators(extraData []byte) []common.Address {
- // get the validator addresses
- addrs := make([]common.Address, (len(extraData) / common.AddressLength))
- for i := 0; i < len(addrs); i++ {
- copy(addrs[i][:], extraData[i*common.AddressLength:])
- }
- return addrs
- }
- // Check whether the extraData is presented in prescribed form
- func ValidExtraData(extraData []byte) bool {
- return len(extraData)%common.AddressLength == 0
- }
- func SortedAddresses(validators []istanbul.Validator) []common.Address {
- addrs := make([]common.Address, len(validators))
- for i, validator := range validators {
- addrs[i] = validator.Address()
- }
- for i := 0; i < len(addrs); i++ {
- for j := i + 1; j < len(addrs); j++ {
- if bytes.Compare(addrs[i][:], addrs[j][:]) > 0 {
- addrs[i], addrs[j] = addrs[j], addrs[i]
- }
- }
- }
- return addrs
- }
|