mirror of https://github.com/poanetwork/quorum.git
59 lines
1.7 KiB
Go
59 lines
1.7 KiB
Go
// Copyright 2014 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 pow
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import (
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"math/big"
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"github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/core/types"
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)
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type Block interface {
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Difficulty() *big.Int
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HashNoNonce() common.Hash
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Nonce() uint64
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MixDigest() common.Hash
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NumberU64() uint64
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}
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type ChainManager interface {
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GetBlockByNumber(uint64) *types.Block
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CurrentBlock() *types.Block
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}
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type PoW interface {
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Verify(block Block) error
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Search(block Block, stop <-chan struct{}) (uint64, []byte)
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Hashrate() float64
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}
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// FakePow is a non-validating proof of work implementation.
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// It returns true from Verify for any block.
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type FakePow struct{}
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// Verify implements PoW, returning a success for an input.
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func (pow FakePow) Verify(block Block) error { return nil }
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// Search implements PoW, returning the nonce 0 for any call.
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func (pow FakePow) Search(block Block, stop <-chan struct{}) (uint64, []byte) {
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return 0, nil
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}
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// Hashrate implements PoW, returning 0.
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func (pow FakePow) Hashrate() float64 { return 0 }
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