github.com/aigarnetwork/aigar@v0.0.0-20191115204914-d59a6eb70f8e/eth/downloader/types.go (about)

     1  //  Copyright 2018 The go-ethereum Authors
     2  //  Copyright 2019 The go-aigar Authors
     3  //  This file is part of the go-aigar library.
     4  //
     5  //  The go-aigar library is free software: you can redistribute it and/or modify
     6  //  it under the terms of the GNU Lesser General Public License as published by
     7  //  the Free Software Foundation, either version 3 of the License, or
     8  //  (at your option) any later version.
     9  //
    10  //  The go-aigar library is distributed in the hope that it will be useful,
    11  //  but WITHOUT ANY WARRANTY; without even the implied warranty of
    12  //  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
    13  //  GNU Lesser General Public License for more details.
    14  //
    15  //  You should have received a copy of the GNU Lesser General Public License
    16  //  along with the go-aigar library. If not, see <http://www.gnu.org/licenses/>.
    17  
    18  package downloader
    19  
    20  import (
    21  	"fmt"
    22  
    23  	"github.com/AigarNetwork/aigar/core/types"
    24  )
    25  
    26  // peerDropFn is a callback type for dropping a peer detected as malicious.
    27  type peerDropFn func(id string)
    28  
    29  // dataPack is a data message returned by a peer for some query.
    30  type dataPack interface {
    31  	PeerId() string
    32  	Items() int
    33  	Stats() string
    34  }
    35  
    36  // headerPack is a batch of block headers returned by a peer.
    37  type headerPack struct {
    38  	peerID  string
    39  	headers []*types.Header
    40  }
    41  
    42  func (p *headerPack) PeerId() string { return p.peerID }
    43  func (p *headerPack) Items() int     { return len(p.headers) }
    44  func (p *headerPack) Stats() string  { return fmt.Sprintf("%d", len(p.headers)) }
    45  
    46  // bodyPack is a batch of block bodies returned by a peer.
    47  type bodyPack struct {
    48  	peerID       string
    49  	transactions [][]*types.Transaction
    50  	uncles       [][]*types.Header
    51  }
    52  
    53  func (p *bodyPack) PeerId() string { return p.peerID }
    54  func (p *bodyPack) Items() int {
    55  	if len(p.transactions) <= len(p.uncles) {
    56  		return len(p.transactions)
    57  	}
    58  	return len(p.uncles)
    59  }
    60  func (p *bodyPack) Stats() string { return fmt.Sprintf("%d:%d", len(p.transactions), len(p.uncles)) }
    61  
    62  // receiptPack is a batch of receipts returned by a peer.
    63  type receiptPack struct {
    64  	peerID   string
    65  	receipts [][]*types.Receipt
    66  }
    67  
    68  func (p *receiptPack) PeerId() string { return p.peerID }
    69  func (p *receiptPack) Items() int     { return len(p.receipts) }
    70  func (p *receiptPack) Stats() string  { return fmt.Sprintf("%d", len(p.receipts)) }
    71  
    72  // statePack is a batch of states returned by a peer.
    73  type statePack struct {
    74  	peerID string
    75  	states [][]byte
    76  }
    77  
    78  func (p *statePack) PeerId() string { return p.peerID }
    79  func (p *statePack) Items() int     { return len(p.states) }
    80  func (p *statePack) Stats() string  { return fmt.Sprintf("%d", len(p.states)) }