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feat: metadata book (#638)

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* feat: metadata book

* chore: address review

* chore: address review
This commit is contained in:
Vasco Santos
2020-05-15 19:39:13 +02:00
committed by Jacob Heun
parent 0fbb59748e
commit 84b935f682
11 changed files with 861 additions and 39 deletions
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51
src/peer-store/index.js
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@ -10,6 +10,7 @@ const PeerId = require('peer-id')
const AddressBook = require('./address-book')
const KeyBook = require('./key-book')
const MetadataBook = require('./metadata-book')
const ProtoBook = require('./proto-book')
const {
@ -21,6 +22,8 @@ const {
* @fires PeerStore#peer Emitted when a new peer is added.
* @fires PeerStore#change:protocols Emitted when a known peer supports a different set of protocols.
* @fires PeerStore#change:multiaddrs Emitted when a known peer has a different set of multiaddrs.
* @fires PeerStore#change:pubkey Emitted emitted when a peer's public key is known.
* @fires PeerStore#change:metadata Emitted when the known metadata of a peer change.
*/
class PeerStore extends EventEmitter {
/**
@ -47,6 +50,11 @@ class PeerStore extends EventEmitter {
*/
this.keyBook = new KeyBook(this)
/**
* MetadataBook containing a map of peerIdStr to their metadata Map.
*/
this.metadataBook = new MetadataBook(this)
/**
* ProtoBook containing a map of peerIdStr to supported protocols.
*/
@ -68,31 +76,17 @@ class PeerStore extends EventEmitter {
* @returns {Map<string, Peer>}
*/
get peers () {
const storedPeers = new Set([
...this.addressBook.data.keys(),
...this.keyBook.data.keys(),
...this.protoBook.data.keys(),
...this.metadataBook.data.keys()
])
const peersData = new Map()
// AddressBook
for (const [idStr, addresses] of this.addressBook.data.entries()) {
const id = this.keyBook.data.get(idStr) || PeerId.createFromCID(idStr)
peersData.set(idStr, {
id,
addresses,
protocols: this.protoBook.get(id) || []
})
}
// ProtoBook
for (const [idStr, protocols] of this.protoBook.data.entries()) {
const pData = peersData.get(idStr)
const id = this.keyBook.data.get(idStr) || PeerId.createFromCID(idStr)
if (!pData) {
peersData.set(idStr, {
id,
addresses: [],
protocols: Array.from(protocols)
})
}
}
storedPeers.forEach((idStr) => {
peersData.set(idStr, this.get(PeerId.createFromCID(idStr)))
})
return peersData
}
@ -106,8 +100,9 @@ class PeerStore extends EventEmitter {
const addressesDeleted = this.addressBook.delete(peerId)
const keyDeleted = this.keyBook.delete(peerId)
const protocolsDeleted = this.protoBook.delete(peerId)
const metadataDeleted = this.metadataBook.delete(peerId)
return addressesDeleted || keyDeleted || protocolsDeleted
return addressesDeleted || keyDeleted || protocolsDeleted || metadataDeleted
}
/**
@ -122,16 +117,18 @@ class PeerStore extends EventEmitter {
const id = this.keyBook.data.get(peerId.toB58String())
const addresses = this.addressBook.get(peerId)
const metadata = this.metadataBook.get(peerId)
const protocols = this.protoBook.get(peerId)
if (!addresses && !protocols) {
if (!id && !addresses && !metadata && !protocols) {
return undefined
}
return {
id: id || peerId,
addresses: addresses || [],
protocols: protocols || []
protocols: protocols || [],
metadata: metadata
}
}
}