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Fix monitor ID type mismatch causing all Uptime Kuma statuses to read unknown (#38)

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heartbeatList/importantHeartbeatList emit monitor IDs as strings (server
iterates object keys), while monitorList and the live heartbeat event use
numbers. The lastHeartbeat map was keyed by the numeric monitor.id, so
string-keyed lookups from heartbeatList/importantHeartbeatList never hit.

Co-authored-by: Claude <noreply@anthropic.com>
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Samuel James 2026-06-21 09:21:09 -04:00 • committed by GitHub
parent b4943b1155
commit 9a1d2803a2
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1 changed files with 7 additions and 4 deletions
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11
backend/src/integrations/uptimeKuma.ts
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@ -86,17 +86,20 @@ export const uptimeKuma: IntegrationAdapter = {
s.on('monitorList', (list: Record<string, UptimeKumaMonitor>) => {
for (const m of Object.values(list)) monitors.set(m.id, m)
})
s.on('importantHeartbeatList', (monitorId: number, beats: Heartbeat[]) => {
s.on('importantHeartbeatList', (monitorId: number | string, beats: Heartbeat[]) => {
const latest = beats[beats.length - 1]
if (latest) lastHeartbeat.set(monitorId, latest)
if (latest) lastHeartbeat.set(Number(monitorId), latest)
})
// importantHeartbeatList only contains status-change events, so a monitor
// that's been continuously up since it was added has no entries there.
// heartbeatList carries the regular (non-"important") beat history and is
// sent for every monitor, so it's needed to populate those cases too.
s.on('heartbeatList', (monitorId: number, beats: Heartbeat[]) => {
// Uptime Kuma's server emits both with the monitor ID as a string (it
// iterates monitor object keys), unlike monitorList/heartbeat which use
// numeric IDs — coerce so map lookups by numeric monitor.id still hit.
s.on('heartbeatList', (monitorId: number | string, beats: Heartbeat[]) => {
const latest = beats[beats.length - 1]
if (latest) lastHeartbeat.set(monitorId, latest)
if (latest) lastHeartbeat.set(Number(monitorId), latest)
})
s.on('heartbeat', (beat: Heartbeat & { monitorID: number }) => {
lastHeartbeat.set(beat.monitorID, beat)