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fix: register data providers for local preview

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Adapt the preview middleware contribution from PR #324 to the extracted provider modules, including the existing OpenSky route.
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Jejugo authored and Sameh Khamis committed 2026-09-12 12:43:54 -07:00
1 parent 276bb84904
commit a0f07b752f
10 files changed
+1100 -1089
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server/providers/firms.js
+88 -86
View File
@@ -167,93 +167,95 @@ export function firmsProxy() {
return statusInflight;
}
const installMiddleware = (server) => {
server.middlewares.use('/api/firms', async (req, res) => {
const sendJson = (status, obj) => {
if (res.headersSent) return;
res.writeHead(status, {
'Content-Type': 'application/json',
'Cache-Control': 'no-store',
});
res.end(JSON.stringify(obj));
};
try {
const subPath = String(req.url || '').split('?')[0];
const key = mapKey();
await readDiskOnce();
if (subPath === '/status') {
if (!key) {
sendJson(200, {
hasKey: false,
lastFetch: null,
count: null,
stale: false,
ttlMs: TTL_MS,
transactions: null,
});
return;
}
const transactions = await getTransactions(key);
sendJson(200, {
hasKey: true,
lastFetch: mem ? mem.at : null,
count: mem ? mem.fires.length : null,
stale: mem ? Date.now() - mem.at >= TTL_MS : false,
ttlMs: TTL_MS,
transactions,
});
return;
}
if (!key) {
sendJson(503, { error: 'no_key' });
return;
}
const entry = mem;
if (entry && Date.now() - entry.at < TTL_MS) {
sendJson(200, buildPayload(entry, false));
return;
}
// Stale or missing → refresh, single-flight (concurrent requests
// share one upstream pass). Capture the promise locally BEFORE
// awaiting: the .finally() nulls `inflight` the moment it settles.
if (!inflight) {
inflight = refreshUpstream(key)
.then(async (fresh) => {
mem = fresh;
await writeDisk(fresh);
return fresh;
})
.catch((err) => {
console.warn(
`[firms-proxy] refresh failed (${err?.message || err}) — serving cache if any`,
);
return null;
})
.finally(() => {
inflight = null;
});
}
const pending = inflight;
const fresh = await pending;
if (fresh) {
sendJson(200, buildPayload(fresh, false));
} else if (entry) {
sendJson(200, buildPayload(entry, true)); // upstream down — stale beats empty
} else {
sendJson(502, {
error: 'firms fetch failed and no cache available',
});
}
} catch (err) {
console.warn('[firms-proxy] error:', err?.message || err);
sendJson(500, { error: 'firms proxy error' });
}
});
};
return {
name: 'firms-proxy',
configureServer(server) {
server.middlewares.use('/api/firms', async (req, res) => {
const sendJson = (status, obj) => {
if (res.headersSent) return;
res.writeHead(status, {
'Content-Type': 'application/json',
'Cache-Control': 'no-store',
});
res.end(JSON.stringify(obj));
};
try {
const subPath = String(req.url || '').split('?')[0];
const key = mapKey();
await readDiskOnce();
if (subPath === '/status') {
if (!key) {
sendJson(200, {
hasKey: false,
lastFetch: null,
count: null,
stale: false,
ttlMs: TTL_MS,
transactions: null,
});
return;
}
const transactions = await getTransactions(key);
sendJson(200, {
hasKey: true,
lastFetch: mem ? mem.at : null,
count: mem ? mem.fires.length : null,
stale: mem ? Date.now() - mem.at >= TTL_MS : false,
ttlMs: TTL_MS,
transactions,
});
return;
}
if (!key) {
sendJson(503, { error: 'no_key' });
return;
}
const entry = mem;
if (entry && Date.now() - entry.at < TTL_MS) {
sendJson(200, buildPayload(entry, false));
return;
}
// Stale or missing → refresh, single-flight (concurrent requests
// share one upstream pass). Capture the promise locally BEFORE
// awaiting: the .finally() nulls `inflight` the moment it settles.
if (!inflight) {
inflight = refreshUpstream(key)
.then(async (fresh) => {
mem = fresh;
await writeDisk(fresh);
return fresh;
})
.catch((err) => {
console.warn(
`[firms-proxy] refresh failed (${err?.message || err}) — serving cache if any`,
);
return null;
})
.finally(() => {
inflight = null;
});
}
const pending = inflight;
const fresh = await pending;
if (fresh) {
sendJson(200, buildPayload(fresh, false));
} else if (entry) {
sendJson(200, buildPayload(entry, true)); // upstream down — stale beats empty
} else {
sendJson(502, {
error: 'firms fetch failed and no cache available',
});
}
} catch (err) {
console.warn('[firms-proxy] error:', err?.message || err);
sendJson(500, { error: 'firms proxy error' });
}
});
},
configureServer: installMiddleware,
configurePreviewServer: installMiddleware,
};
}