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fix(preview): remove zombie killer ping to allow container auto-wake via Traefik

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This commit is contained in:
mawkone
2026-06-12 15:12:14 -07:00
parent 27a1f308d0
commit c5454347f9
1 changed files with 1 additions and 75 deletions
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76
vibn-frontend/app/api/projects/[projectId]/anatomy/route.ts
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@@ -793,81 +793,7 @@ async function loadPreviews(projectId: string): Promise<Preview[]> {
[projectId],
);
// Filter out zombies: if a server is marked 'running' but the URL returns a 50x
// Gateway error or times out, the process died. We mark it stopped so the
// UI can trigger an auto-restart.
const activePreviews: typeof rows = [];
await Promise.all(
rows.map(async (r) => {
if (r.state !== "running") {
activePreviews.push(r);
return;
}
try {
const controller = new AbortController();
// We use a short timeout because we don't want to block the anatomy
// response. A slow response doesn't mean it's dead (Next.js might
// just be compiling) — we ONLY want to catch instant 502/503s from Traefik.
const timeout = setTimeout(() => controller.abort(), 2000);
const ping = await fetch(r.preview_url, {
method: "HEAD",
signal: controller.signal,
});
clearTimeout(timeout);
// 502/503/504 means Traefik is up but the container isn't answering.
// 404 means Traefik doesn't even know about the route.
if (
ping.status === 502 ||
ping.status === 503 ||
ping.status === 504 ||
ping.status === 404
) {
// GRACE PERIOD: If the server was started less than 60 seconds ago,
// Traefik might return a 502/504 simply because the Node process hasn't
// finished booting and binding to the port yet. Do not kill it!
const ageMs = Date.now() - new Date(r.started_at).getTime();
if (ageMs < 60_000) {
activePreviews.push(r); // Give it the benefit of the doubt
return;
}
console.warn(
`[anatomy] Preview zombie detected for ${r.preview_url} (HTTP ${ping.status}, age ${Math.round(ageMs / 1000)}s). Marking stopped.`,
);
await query(
`UPDATE fs_dev_servers SET state = 'stopped' WHERE id = $1`,
[r.id],
).catch(() => {});
} else {
activePreviews.push(r);
}
} catch (e: any) {
// If the fetch aborts due to our 2s timeout, the server is just slow
// (likely doing a cold Webpack compile). DO NOT mark it as a zombie!
// Only kill it if we get a hard DNS/network error that isn't a timeout.
if (
e.name === "AbortError" ||
e.type === "aborted" ||
e.message?.includes("timeout")
) {
activePreviews.push(r); // Benefit of the doubt — it's thinking
} else {
console.warn(
`[anatomy] Preview zombie detected for ${r.preview_url} (${e.message}). Marking stopped.`,
);
await query(
`UPDATE fs_dev_servers SET state = 'stopped' WHERE id = $1`,
[r.id],
).catch(() => {});
}
}
}),
);
return sortDevPreviewsFrontendFirst(activePreviews).map((r) => ({
return sortDevPreviewsFrontendFirst(rows).map((r) => ({
id: r.id,
name: r.name,
command: r.command ?? undefined,