mirror of https://github.com/poanetwork/quorum.git
81 lines
2.4 KiB
Go
81 lines
2.4 KiB
Go
// Copyright 2017 The go-ethereum Authors
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// This file is part of the go-ethereum library.
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//
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// The go-ethereum library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// The go-ethereum library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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package istanbul
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import (
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"strings"
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"github.com/ethereum/go-ethereum/common"
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)
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type Validator interface {
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// Address returns address
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Address() common.Address
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// String representation of Validator
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String() string
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}
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// ----------------------------------------------------------------------------
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type Validators []Validator
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func (slice Validators) Len() int {
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return len(slice)
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}
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func (slice Validators) Less(i, j int) bool {
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return strings.Compare(slice[i].String(), slice[j].String()) < 0
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}
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func (slice Validators) Swap(i, j int) {
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slice[i], slice[j] = slice[j], slice[i]
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}
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// ----------------------------------------------------------------------------
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type ValidatorSet interface {
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// Calculate the proposer
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CalcProposer(lastProposer common.Address, round uint64)
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// Return the validator size
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Size() int
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// Return the validator array
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List() []Validator
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// Get validator by index
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GetByIndex(i uint64) Validator
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// Get validator by given address
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GetByAddress(addr common.Address) (int, Validator)
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// Get current proposer
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GetProposer() Validator
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// Check whether the validator with given address is a proposer
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IsProposer(address common.Address) bool
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// Add validator
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AddValidator(address common.Address) bool
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// Remove validator
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RemoveValidator(address common.Address) bool
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// Copy validator set
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Copy() ValidatorSet
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// Get the maximum number of faulty nodes
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F() int
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// Get proposer policy
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Policy() ProposerPolicy
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}
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// ----------------------------------------------------------------------------
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type ProposalSelector func(ValidatorSet, common.Address, uint64) Validator
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