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- // Copyright 2015 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 downloader
- import (
- "fmt"
- "github.com/ethereum/go-ethereum/core/types"
- )
- // peerDropFn is a callback type for dropping a peer detected as malicious.
- type peerDropFn func(id string)
- // dataPack is a data message returned by a peer for some query.
- type dataPack interface {
- PeerId() string
- Items() int
- Stats() string
- }
- // headerPack is a batch of block headers returned by a peer.
- type headerPack struct {
- peerID string
- headers []*types.Header
- }
- func (p *headerPack) PeerId() string { return p.peerID }
- func (p *headerPack) Items() int { return len(p.headers) }
- func (p *headerPack) Stats() string { return fmt.Sprintf("%d", len(p.headers)) }
- // bodyPack is a batch of block bodies returned by a peer.
- type bodyPack struct {
- peerID string
- transactions [][]*types.Transaction
- uncles [][]*types.Header
- }
- func (p *bodyPack) PeerId() string { return p.peerID }
- func (p *bodyPack) Items() int {
- if len(p.transactions) <= len(p.uncles) {
- return len(p.transactions)
- }
- return len(p.uncles)
- }
- func (p *bodyPack) Stats() string { return fmt.Sprintf("%d:%d", len(p.transactions), len(p.uncles)) }
- // receiptPack is a batch of receipts returned by a peer.
- type receiptPack struct {
- peerID string
- receipts [][]*types.Receipt
- }
- func (p *receiptPack) PeerId() string { return p.peerID }
- func (p *receiptPack) Items() int { return len(p.receipts) }
- func (p *receiptPack) Stats() string { return fmt.Sprintf("%d", len(p.receipts)) }
- // statePack is a batch of states returned by a peer.
- type statePack struct {
- peerID string
- states [][]byte
- }
- func (p *statePack) PeerId() string { return p.peerID }
- func (p *statePack) Items() int { return len(p.states) }
- func (p *statePack) Stats() string { return fmt.Sprintf("%d", len(p.states)) }
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