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feat: async peerstore backed by datastores (#1058)

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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
This commit is contained in:
Alex Potsides
2022-01-20 12:03:35 +00:00
committed by GitHub
parent 0a4dc54d08
commit 978eb3676f
94 changed files with 3263 additions and 4039 deletions
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9
test/dialing/direct.spec.js
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@ -13,7 +13,7 @@ const { NOISE: Crypto } = require('@chainsafe/libp2p-noise')
const { Multiaddr } = require('multiaddr')
const AggregateError = require('aggregate-error')
const { AbortError } = require('libp2p-interfaces/src/transport/errors')
const { MemoryDatastore } = require('datastore-core/memory')
const { codes: ErrorCodes } = require('../../src/errors')
const Constants = require('../../src/constants')
const Dialer = require('../../src/dialer')
@ -36,7 +36,10 @@ describe('Dialing (direct, WebSockets)', () => {
before(async () => {
[peerId] = await createPeerId()
peerStore = new PeerStore({ peerId })
peerStore = new PeerStore({
peerId,
datastore: new MemoryDatastore()
})
localTM = new TransportManager({
libp2p: {},
upgrader: mockUpgrader,
@ -215,7 +218,7 @@ describe('Dialing (direct, WebSockets)', () => {
})
// Inject data in the AddressBook
peerStore.addressBook.add(peerId, peerMultiaddrs)
await peerStore.addressBook.add(peerId, peerMultiaddrs)
// Perform 3 multiaddr dials
await dialer.connectToPeer(peerId)