Raven ScottandCursor
0fdf35e7d8
Add mesh-peer-quality helpers (RTT, drop rate, stale cursor) for selective sync prioritization and rejoin jitter on mesh peer retries. Expose meshStatusSummary, platformCapabilities, and ipcContractVersion on view; exportActiveChannelTopicPreview now passes guildId to getChannelSettings so descriptions resolve correctly for automation smokes. Co-authored-by: Cursor <[email protected]>
55 lines
1.6 KiB
JavaScript
55 lines
1.6 KiB
JavaScript
'use strict'
|
||
|
||
function meshRejoinJitterMs (guildId, salt = '') {
|
||
const max = Math.max(0, Number(process.env.PEARCORD_MESH_REJOIN_JITTER_MS) || 900)
|
||
if (!max) return 0
|
||
let h = 2166136261
|
||
const key = `${guildId || ''}:${salt}`
|
||
for (let i = 0; i < key.length; i++) {
|
||
h ^= key.charCodeAt(i)
|
||
h = Math.imul(h, 16777619)
|
||
}
|
||
return h % max
|
||
}
|
||
|
||
/**
|
||
* Score 0–100 for selective mesh sync priority (higher is healthier).
|
||
* @param {object} row peer seen row
|
||
* @param {object} opts
|
||
*/
|
||
function computeMeshPeerQualityScore (row, opts = {}) {
|
||
const now = Date.now()
|
||
const rttMs = Math.max(0, Number(row?.rttMs) || Number(opts.fallbackRttMs) || 120)
|
||
const staleMs = Math.max(0, now - (Number(row?.lastSeenAt) || 0))
|
||
const drops = Math.max(0, Number(row?.dropCount) || 0)
|
||
let score = 100
|
||
score -= Math.min(40, Math.round(rttMs / 20))
|
||
score -= Math.min(25, drops * 6)
|
||
score -= Math.min(22, Math.round(staleMs / 12000))
|
||
if (row?.sparseCursorStale) score -= 12
|
||
return Math.max(0, Math.min(100, score))
|
||
}
|
||
|
||
function rankMeshPeersByQuality (peerMap, opts = {}) {
|
||
const rows = []
|
||
for (const [peerId, row] of peerMap.entries()) {
|
||
const qualityScore = computeMeshPeerQualityScore(row, opts)
|
||
rows.push({
|
||
peerId,
|
||
qualityScore,
|
||
rttMs: Number(row.rttMs) || null,
|
||
dropCount: Number(row.dropCount) || 0,
|
||
lastSeenAt: Number(row.lastSeenAt) || 0,
|
||
sparseCursorStale: !!row.sparseCursorStale
|
||
})
|
||
}
|
||
rows.sort((a, b) => b.qualityScore - a.qualityScore)
|
||
return rows
|
||
}
|
||
|
||
module.exports = {
|
||
meshRejoinJitterMs,
|
||
computeMeshPeerQualityScore,
|
||
rankMeshPeersByQuality
|
||
}
|