mirror of https://codeberg.org/pzp/pzp-net.git
132 lines
2.8 KiB
JavaScript
132 lines
2.8 KiB
JavaScript
const createNotify = require('pull-notify')
|
|
const pullConcat = require('pull-cat')
|
|
const pull = require('pull-stream')
|
|
const Obz = require('obz')
|
|
|
|
/**
|
|
* @template T
|
|
* @typedef {import('obz').Obz<T>} Obz
|
|
*/
|
|
|
|
/**
|
|
* @typedef {import('./index').Multiaddr} Multiaddr
|
|
* @typedef {import('./stats').StatsInfo} StatsInfo
|
|
* @typedef {{
|
|
* state: 'connected' | 'disconnected' | 'connecting' | 'disconnecting',
|
|
* inferredType?: 'internet' | 'lan' | 'tunnel' | undefined;
|
|
* stats?: StatsInfo
|
|
* }} Info
|
|
*/
|
|
|
|
class Infos {
|
|
/** @type {Map<Multiaddr, Info>} */
|
|
#map
|
|
/** @type {ReturnType<createNotify>} */
|
|
#notify
|
|
/** @type {Obz<Multiaddr>} */
|
|
#onStatsUpdated
|
|
|
|
constructor() {
|
|
this.#map = new Map()
|
|
this.#notify = createNotify()
|
|
this.#onStatsUpdated = Obz()
|
|
}
|
|
|
|
/**
|
|
* @param {Multiaddr} multiaddr
|
|
* @returns {Info | undefined}
|
|
*/
|
|
get(multiaddr) {
|
|
return this.#map.get(multiaddr)
|
|
}
|
|
|
|
/**
|
|
* @param {Multiaddr} multiaddr
|
|
* @returns {boolean}
|
|
*/
|
|
has(multiaddr) {
|
|
return this.#map.has(multiaddr)
|
|
}
|
|
|
|
/**
|
|
* @param {Multiaddr} multiaddr
|
|
* @param {Partial<Info>} info
|
|
* @returns {void}
|
|
*/
|
|
update(multiaddr, info) {
|
|
const hasNewStats = !!info.stats
|
|
const prevInfo = this.#map.get(multiaddr)
|
|
if (prevInfo) {
|
|
for (const key of Object.keys(info)) {
|
|
const k = /**@type {keyof Info}*/ (key)
|
|
if (typeof info[k] === 'undefined') delete info[k]
|
|
}
|
|
this.#map.set(multiaddr, { ...prevInfo, ...info })
|
|
} else if (!info.state) {
|
|
this.#map.set(multiaddr, { ...info, state: 'disconnected' })
|
|
} else {
|
|
this.#map.set(multiaddr, /**@type {Info}*/ (info))
|
|
}
|
|
if (hasNewStats) {
|
|
this.#onStatsUpdated.set(multiaddr)
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @param {Multiaddr} multiaddr
|
|
* @param {(prevStats: Partial<Info['stats']>) => Partial<Info['stats']>} getStats
|
|
* @returns {void}
|
|
*/
|
|
updateStats(multiaddr, getStats) {
|
|
const prevInfo = this.#map.get(multiaddr)
|
|
if (!prevInfo) return
|
|
this.#map.set(multiaddr, {
|
|
...prevInfo,
|
|
stats: {
|
|
...prevInfo?.stats,
|
|
...getStats(prevInfo?.stats),
|
|
},
|
|
})
|
|
this.#onStatsUpdated.set(multiaddr)
|
|
}
|
|
|
|
/**
|
|
* @param {Parameters<Obz<Multiaddr>>[0]} listener
|
|
*/
|
|
onStatsUpdated(listener) {
|
|
return this.#onStatsUpdated(listener)
|
|
}
|
|
|
|
/**
|
|
* @param {Multiaddr} multiaddr
|
|
*/
|
|
remove(multiaddr) {
|
|
this.#map.delete(multiaddr)
|
|
this.#onStatsUpdated.set(multiaddr)
|
|
}
|
|
|
|
size() {
|
|
return this.#map.size
|
|
}
|
|
|
|
emit() {
|
|
this.#notify(Array.from(this.#map.entries()))
|
|
}
|
|
|
|
entries() {
|
|
return this.#map.entries()
|
|
}
|
|
|
|
/**
|
|
* @returns {pull.Source<Array<[Multiaddr, Info]>>}
|
|
*/
|
|
liveEntries() {
|
|
return pullConcat([
|
|
pull.values([Array.from(this.#map.entries())]),
|
|
this.#notify.listen(),
|
|
])
|
|
}
|
|
}
|
|
|
|
module.exports = Infos
|