feat: async peerstore backed by datastores (#1058)

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

View File

@ -45,8 +45,8 @@ describe('DHT subsystem operates correctly', () => {
remoteLibp2p.start()
])
libp2p.peerStore.addressBook.set(remotePeerId, [remoteListenAddr])
remAddr = libp2p.peerStore.addressBook.getMultiaddrsForPeer(remotePeerId)[0]
await libp2p.peerStore.addressBook.set(remotePeerId, [remoteListenAddr]);
[remAddr] = await libp2p.peerStore.addressBook.getMultiaddrsForPeer(remotePeerId)
})
afterEach(() => Promise.all([
@ -106,8 +106,8 @@ describe('DHT subsystem operates correctly', () => {
await libp2p.start()
await remoteLibp2p.start()
libp2p.peerStore.addressBook.set(remotePeerId, [remoteListenAddr])
remAddr = libp2p.peerStore.addressBook.getMultiaddrsForPeer(remotePeerId)[0]
await libp2p.peerStore.addressBook.set(remotePeerId, [remoteListenAddr])
remAddr = (await libp2p.peerStore.addressBook.getMultiaddrsForPeer(remotePeerId))[0]
})
afterEach(() => Promise.all([