mirror of https://github.com/poanetwork/quorum.git
61 lines
2.2 KiB
Go
61 lines
2.2 KiB
Go
|
// 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 istanbul
|
||
|
|
||
|
import (
|
||
|
"time"
|
||
|
|
||
|
"github.com/ethereum/go-ethereum/common"
|
||
|
"github.com/ethereum/go-ethereum/event"
|
||
|
)
|
||
|
|
||
|
// Backend provides application specific functions for Istanbul core
|
||
|
type Backend interface {
|
||
|
// Address returns the owner's address
|
||
|
Address() common.Address
|
||
|
|
||
|
// Validators returns the validator set
|
||
|
Validators(proposal Proposal) ValidatorSet
|
||
|
|
||
|
// EventMux returns the event mux in backend
|
||
|
EventMux() *event.TypeMux
|
||
|
|
||
|
// Broadcast sends a message to all validators (include self)
|
||
|
Broadcast(valSet ValidatorSet, payload []byte) error
|
||
|
|
||
|
// Gossip sends a message to all validators (exclude self)
|
||
|
Gossip(valSet ValidatorSet, payload []byte) error
|
||
|
|
||
|
// Commit delivers an approved proposal to backend.
|
||
|
// The delivered proposal will be put into blockchain.
|
||
|
Commit(proposal Proposal, seals [][]byte) error
|
||
|
|
||
|
// Verify verifies the proposal. If a consensus.ErrFutureBlock error is returned,
|
||
|
// the time difference of the proposal and current time is also returned.
|
||
|
Verify(Proposal) (time.Duration, error)
|
||
|
|
||
|
// Sign signs input data with the backend's private key
|
||
|
Sign([]byte) ([]byte, error)
|
||
|
|
||
|
// CheckSignature verifies the signature by checking if it's signed by
|
||
|
// the given validator
|
||
|
CheckSignature(data []byte, addr common.Address, sig []byte) error
|
||
|
|
||
|
// LastProposal retrieves latest committed proposal and the address of proposer
|
||
|
LastProposal() (Proposal, common.Address)
|
||
|
}
|