catarrh
269e507580
ramBatchFetch's re-entrancy guard (_ramBatchFetching) is only cleared when the fetch settles, and ramBatchApplyStatus returned without rendering whenever it decided a fetch was due - so one stalled /api/ram-batch/status request (the browser's fetch has no timeout) froze the whole panel (counts, phase, notice, throbber) at the last successful render while the server kept installing (live 2026-10-14: 31 installs, the panel stuck at "Installed: 12"; the log showed all 31 attempts and a healthy /api/status cadence, so the data was there). - The summary render now runs on every poll before the fetch decision: the headline (phase, current card, counts, notice) always follows the 2 s /api/status poll; the detailed fetch only adds the attempts table. - A fetch guard older than RAM_BATCH_FETCH_STALE_MS (10 s) is released, so a stalled fetch cannot block the report forever - the next poll retries and the attempts table recovers. Reproduced with the page's real functions: 12 good fetches, the 13th hung -> the panel stuck at 12 (the reported number); with the fix it follows the summary to 31 and the stale guard retries. Tests: a hung fetch keeps the counts following the summary; a stale guard is released and retried (a fresh one is kept). 919 frontend + 928 Python; sw cache simple-v445.
78 lines
2.1 KiB
JavaScript
78 lines
2.1 KiB
JavaScript
const CACHE = 'simple-v445';
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const URLS = [
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'index.html',
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'help.html',
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'help-ru.html',
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'style.css',
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'sim.png',
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'favicon.svg',
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'icon-192.png',
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'icon-512.png',
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'manifest.json',
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'des-bundle.js',
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'aes-bundle.js',
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'sim.svg',
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'sim_anim.svg',
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'nosim.svg',
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'uicc_files.json',
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];
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self.addEventListener('install', e => {
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// Fetch the shell with `cache: 'reload'`: a plain addAll() would re-use
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// HTTP-cached copies, so a new SW version could precache a stale
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// style.css/index.html (the stale-style trap, v3.6.31).
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e.waitUntil(
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caches.open(CACHE).then(c =>
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Promise.all(URLS.map(u => fetch(u, { cache: 'reload' }).then(r => {
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if (r && r.ok) return c.put(u, r);
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})))
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)
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);
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self.skipWaiting();
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});
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self.addEventListener('activate', e => {
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e.waitUntil(
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caches.keys().then(keys =>
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Promise.all(keys.filter(k => k !== CACHE).map(k => caches.delete(k)))
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).then(() => clients.claim())
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);
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});
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const OFFLINE_RESPONSE = new Response('Offline: page not cached', {
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status: 503,
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statusText: 'Offline',
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headers: { 'Content-Type': 'text/plain' },
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});
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self.addEventListener('fetch', e => {
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if (!e.request.url.startsWith('http')) return;
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const path = new URL(e.request.url).pathname;
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if (path.startsWith('/api/')) return; // live data, never cache
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if (e.request.method !== 'GET') return;
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const isNavigate = e.request.mode === 'navigate';
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const isSwScript = path.endsWith('/sw.js');
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if (isNavigate) {
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e.respondWith(
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fetch(e.request).then(res => {
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const clone = res.clone();
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caches.open(CACHE).then(c => c.put(e.request, clone));
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return res;
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}).catch(() =>
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caches.match(e.request)
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.then(r => r || caches.match('index.html'))
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.then(r => r || OFFLINE_RESPONSE)
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)
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);
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} else if (isSwScript) {
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e.respondWith(fetch(e.request).catch(() => OFFLINE_RESPONSE));
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} else {
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e.respondWith(
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caches.match(e.request).then(r => r || fetch(e.request).then(res => {
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const clone = res.clone();
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caches.open(CACHE).then(c => c.put(e.request, clone));
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return res;
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}))
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);
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}
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}); |