mirror of
https://github.com/fluencelabs/js-libp2p
synced 2025-04-26 11:02:14 +00:00
978eb3676f
We have a peerstore that keeps all data for all observed peers in memory with no eviction. This is fine when you don't discover many peers but when using the DHT you encounter a significant number of peers so our peer storage grows and grows over time. We have a persistent peer store, but it just periodically writes peers into the datastore to be read at startup, still keeping them in memory. It also means a restart doesn't give you any temporary reprieve from the memory leak as the previously observed peer data is read into memory at startup. This change refactors the peerstore to use a datastore by default, reading and writing peer info as it arrives. It can be configured with a MemoryDatastore if desired. It was necessary to change the peerstore and *book interfaces to be asynchronous since the datastore api is asynchronous. BREAKING CHANGE: `libp2p.handle`, `libp2p.registrar.register` and the peerstore methods have become async
69 lines
1.9 KiB
JavaScript
69 lines
1.9 KiB
JavaScript
/* eslint-disable no-console */
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'use strict'
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const Libp2p = require('../../')
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const TCP = require('libp2p-tcp')
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const Mplex = require('libp2p-mplex')
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const { NOISE } = require('@chainsafe/libp2p-noise')
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const Gossipsub = require('@achingbrain/libp2p-gossipsub')
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const Bootstrap = require('libp2p-bootstrap')
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const PubsubPeerDiscovery = require('libp2p-pubsub-peer-discovery')
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const createRelayServer = require('libp2p-relay-server')
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const createNode = async (bootstrapers) => {
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const node = await Libp2p.create({
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addresses: {
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listen: ['/ip4/0.0.0.0/tcp/0']
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},
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modules: {
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transport: [TCP],
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streamMuxer: [Mplex],
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connEncryption: [NOISE],
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pubsub: Gossipsub,
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peerDiscovery: [Bootstrap, PubsubPeerDiscovery]
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},
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config: {
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peerDiscovery: {
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[PubsubPeerDiscovery.tag]: {
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interval: 1000,
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enabled: true
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},
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[Bootstrap.tag]: {
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enabled: true,
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list: bootstrapers
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}
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}
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}
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})
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return node
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}
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;(async () => {
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const relay = await createRelayServer({
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listenAddresses: ['/ip4/0.0.0.0/tcp/0']
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})
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console.log(`libp2p relay starting with id: ${relay.peerId.toB58String()}`)
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await relay.start()
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const relayMultiaddrs = relay.multiaddrs.map((m) => `${m.toString()}/p2p/${relay.peerId.toB58String()}`)
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const [node1, node2] = await Promise.all([
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createNode(relayMultiaddrs),
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createNode(relayMultiaddrs)
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])
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node1.on('peer:discovery', (peerId) => {
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console.log(`Peer ${node1.peerId.toB58String()} discovered: ${peerId.toB58String()}`)
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})
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node2.on('peer:discovery', (peerId) => {
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console.log(`Peer ${node2.peerId.toB58String()} discovered: ${peerId.toB58String()}`)
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})
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;[node1, node2].forEach((node, index) => console.log(`Node ${index} starting with id: ${node.peerId.toB58String()}`))
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await Promise.all([
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node1.start(),
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node2.start()
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])
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})();
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