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odysseus/static/js/cookbookProgressSignal.js
T

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JavaScript

// static/js/cookbookProgressSignal.js
/**
* Liveness signal for a running cookbook download/install. The watchdog treats a
* task as stalled when this signal stays unchanged for too long, so it must move
* whenever the task is genuinely making progress.
*
* During a model DOWNLOAD the honest signal is the downloaded-byte counter
* ("1.81G" from "1.81G/2.49G"): it climbs while transferring and freezes when
* stuck — and unlike a % bar or speed/ETA it doesn't keep animating on a frozen
* frame. That path is kept exactly as-is.
*
* But a dependency install (e.g. vllm) spends long stretches with NO byte
* counter — pip dependency resolution and the native CUDA build/compile. A
* byte-only signal freezes there, so the watchdog falsely declares the install
* stale and restarts it mid-build, looping forever (#1568). When there's no byte
* counter, fall back to a fingerprint of the output tail: resolver/compile lines
* keep changing while the process is alive, and only a truly hung process leaves
* the tail frozen.
*
* Pure (string in, string out) so it's unit-testable; cookbookRunning.js pulls
* in browser-only modules and can't load under node.
*/
export function computeProgressSignal(bytes, dlAgg, lastPct, snapshot) {
if (bytes) return bytes;
const base = dlAgg != null ? String(dlAgg) : (lastPct || '0');
// No byte counter → use the output tail so a build/resolve phase that emits new
// lines counts as progress instead of a false stall (#1568).
return base + '|' + String(snapshot || '').slice(-300);
}