Press n or j to go to the next uncovered block, b, p or k for the previous block.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 | 34x 34x 34x 34x 34x 34x 34x 507x 507x 9857x 10340x 59x 1904x 1904x 1904x 1904x 1904x 1904x 7500x 7500x 4763x 2737x 26474x 10550x 1x 10549x 12913x 8166x 4747x 4746x 1x 11018x 11018x 14088x 5802x 8286x 8285x 8285x 8285x 1x 352x 99x 253x 252x 252x 57x 253x | /* * Copyright © 2019 Lisk Foundation * * See the LICENSE file at the top-level directory of this distribution * for licensing information. * * Unless otherwise agreed in a custom licensing agreement with the Lisk Foundation, * no part of this software, including this file, may be copied, modified, * propagated, or distributed except according to the terms contained in the * LICENSE file. * * Removal or modification of this copyright notice is prohibited. * */ // tslint:disable-next-line no-require-imports import shuffle = require('lodash.shuffle'); import { DEFAULT_NEW_BUCKET_COUNT, DEFAULT_NEW_BUCKET_SIZE, DEFAULT_TRIED_BUCKET_COUNT, DEFAULT_TRIED_BUCKET_SIZE, } from '../constants'; import { ExistingPeerError } from '../errors'; import { P2PEnhancedPeerInfo, P2PPeerInfo } from '../p2p_types'; import { PEER_TYPE } from '../utils'; import { NewList, NewListConfig } from './new_list'; import { TriedList, TriedListConfig } from './tried_list'; export interface PeerBookConfig { readonly newListConfig?: NewListConfig; readonly triedListConfig?: TriedListConfig; readonly secret: number; } export class PeerBook { private readonly _newPeers: NewList; private readonly _triedPeers: TriedList; public constructor({ newListConfig: newListConfig, triedListConfig: triedListConfig, secret, }: PeerBookConfig) { this._newPeers = new NewList( newListConfig ? newListConfig : { secret, numOfBuckets: DEFAULT_NEW_BUCKET_COUNT, bucketSize: DEFAULT_NEW_BUCKET_SIZE, peerType: PEER_TYPE.NEW_PEER, }, ); this._triedPeers = new TriedList( triedListConfig ? triedListConfig : { secret, numOfBuckets: DEFAULT_TRIED_BUCKET_COUNT, bucketSize: DEFAULT_TRIED_BUCKET_SIZE, peerType: PEER_TYPE.TRIED_PEER, }, ); } public get newPeers(): ReadonlyArray<P2PPeerInfo> { return this._newPeers.peerList; } public get triedPeers(): ReadonlyArray<P2PPeerInfo> { return this._triedPeers.peerList; } public get allPeers(): ReadonlyArray<P2PPeerInfo> { return [...this.newPeers, ...this.triedPeers]; } public getRandomizedPeerList( minimumPeerDiscoveryThreshold: number, maxPeerDiscoveryResponseLength: number, ): ReadonlyArray<P2PPeerInfo> { const allPeers = [...this.newPeers, ...this.triedPeers]; /* tslint:disable no-magic-numbers*/ const min = Math.ceil( Math.min(maxPeerDiscoveryResponseLength, allPeers.length * 0.25), ); const max = Math.floor( Math.min(maxPeerDiscoveryResponseLength, allPeers.length * 0.5), ); const random = Math.floor(Math.random() * (max - min + 1) + min); const randomPeerCount = Math.max( random, Math.min(minimumPeerDiscoveryThreshold, allPeers.length), ); return shuffle(allPeers).slice(0, randomPeerCount); } public getPeer(peerInfo: P2PPeerInfo): P2PPeerInfo | undefined { const triedPeer = this._triedPeers.getPeer(peerInfo.peerId); if (triedPeer) { return triedPeer; } return this._newPeers.getPeer(peerInfo.peerId); } public hasPeer(peerInfo: P2PPeerInfo): boolean { return ( this._triedPeers.hasPeer(peerInfo.peerId) || this._newPeers.hasPeer(peerInfo.peerId) ); } public addPeer(peerInfo: P2PEnhancedPeerInfo): void { if (this._triedPeers.getPeer(peerInfo.peerId)) { throw new ExistingPeerError(peerInfo); } this._newPeers.addPeer(peerInfo); } public updatePeer(peerInfo: P2PPeerInfo): boolean { if (this._triedPeers.getPeer(peerInfo.peerId)) { return this._triedPeers.updatePeer(peerInfo); } if (this._newPeers.getPeer(peerInfo.peerId)) { return this._newPeers.updatePeer(peerInfo); } return false; } public removePeer(peerInfo: P2PPeerInfo): void { this._newPeers.removePeer(peerInfo); this._triedPeers.removePeer(peerInfo); } public upgradePeer(peerInfo: P2PEnhancedPeerInfo): boolean { if (this._triedPeers.hasPeer(peerInfo.peerId)) { return true; } if (this._newPeers.hasPeer(peerInfo.peerId)) { this.removePeer(peerInfo); this._triedPeers.addPeer(peerInfo); return true; } return false; } public downgradePeer(peerInfo: P2PEnhancedPeerInfo): boolean { if (this._newPeers.hasPeer(peerInfo.peerId)) { return this._newPeers.failedConnectionAction(peerInfo); } if (this._triedPeers.hasPeer(peerInfo.peerId)) { const failed = this._triedPeers.failedConnectionAction(peerInfo); if (failed) { this.addPeer(peerInfo); } } return false; } } |