George Lambert
a32c91475c
Some checks are pending
offline / test (push) Waiting to run
High-level system map with diagrams, TOC, and a docs index. Template worker shows how to add a new verae.* address for search, storage, or unplanned functions without teaching Zapier NATS.
70 lines
2.1 KiB
JavaScript
70 lines
2.1 KiB
JavaScript
#!/usr/bin/env node
|
|
/**
|
|
* Health HTTP + optional NATS subscribe.
|
|
* Fleet probes /health. Live NATS is off unless NATS_URL is set.
|
|
*/
|
|
import http from 'node:http';
|
|
import { SUBJECTS } from './subjects.js';
|
|
import { handle } from './handle.js';
|
|
|
|
const port = Number(process.env.FLEET_HEALTH_PORT || process.env.PORT || 13900);
|
|
const bind = process.env.FLEET_HEALTH_BIND || '127.0.0.1';
|
|
const instance = process.env.FLEET_INSTANCE || 'verae-nats-process-0';
|
|
let paused = false;
|
|
let processed = 0;
|
|
|
|
function snapshot() {
|
|
return {
|
|
ok: !paused,
|
|
paused,
|
|
instance,
|
|
role: 'verae-nats-process',
|
|
subjects: { in: SUBJECTS.IN, out: SUBJECTS.OUT, queue: SUBJECTS.QUEUE },
|
|
processed,
|
|
};
|
|
}
|
|
|
|
const server = http.createServer(async (req, res) => {
|
|
const url = new URL(req.url, 'http://127.0.0.1');
|
|
const json = (code, obj) => {
|
|
res.writeHead(code, { 'content-type': 'application/json' });
|
|
res.end(JSON.stringify(obj));
|
|
};
|
|
if (url.pathname === '/health' && req.method === 'GET') {
|
|
const s = snapshot();
|
|
return json(s.ok ? 200 : 503, s);
|
|
}
|
|
if (url.pathname === '/pause' && req.method === 'POST') {
|
|
paused = true;
|
|
return json(200, snapshot());
|
|
}
|
|
if (url.pathname === '/resume' && req.method === 'POST') {
|
|
paused = false;
|
|
return json(200, snapshot());
|
|
}
|
|
if (url.pathname === '/message' && req.method === 'POST') {
|
|
const chunks = [];
|
|
for await (const c of req) chunks.push(c);
|
|
let body = {};
|
|
try {
|
|
body = JSON.parse(Buffer.concat(chunks).toString('utf8') || '{}');
|
|
} catch {
|
|
body = {};
|
|
}
|
|
if (paused) return json(503, snapshot());
|
|
try {
|
|
const out = await handle(body);
|
|
processed += 1;
|
|
return json(200, { rttMs: 0, result: out, replyTo: SUBJECTS.reply(out.correlationId) });
|
|
} catch (err) {
|
|
return json(400, { error: err.message });
|
|
}
|
|
}
|
|
json(404, { error: 'not found' });
|
|
});
|
|
|
|
server.listen(port, bind, () => {
|
|
process.stdout.write(`${instance} health http://${bind}:${port}/health in=${SUBJECTS.IN}\n`);
|
|
});
|
|
|
|
process.on('SIGTERM', () => server.close(() => process.exit(0)));
|