Initial import of verae-access-zapier from zapier monorepo

src/server.js

@@ -0,0 +1,55 @@
+#!/usr/bin/env node
+/**
+ * Zapier Platform access plane only. No portal, no customer API keys, no leaf.
+ * Zapier cloud still never connects to NATS; this process does after authz.
+ */
+import http from 'node:http';
+
+const PORT = Number(process.env.PORT || 3024);
+const AUTHZ = (process.env.AUTHZ_URL || 'http://127.0.0.1:3020').replace(/\/$/, '');
+const MW = (process.env.ZAPPIER_UPSTREAM || 'http://127.0.0.1:3100').replace(/\/$/, '');
+const PLANE = 'zapier';
+
+async function check(subject, principal) {
+  const r = await fetch(`${AUTHZ}/check`, {
+    method: 'POST',
+    headers: { 'content-type': 'application/json' },
+    body: JSON.stringify({ plane: PLANE, subject, principal }),
+  });
+  return r.json();
+}
+
+const server = http.createServer(async (req, res) => {
+  const url = new URL(req.url || '/', `http://127.0.0.1:${PORT}`);
+  const json = (code, obj) => {
+    res.writeHead(code, { 'content-type': 'application/json' });
+    res.end(JSON.stringify(obj));
+  };
+  try {
+    if (req.method === 'GET' && url.pathname === '/health') {
+      return json(200, { ok: true, role: 'verae-access-zapier', plane: PLANE });
+    }
+    if (url.pathname.startsWith('/portal') || url.pathname.startsWith('/admin')) {
+      return json(404, { error: 'zapier plane has no portal/admin', plane: PLANE });
+    }
+    if (req.method === 'POST' && (url.pathname === '/v1/timestamp' || url.pathname === '/zapier/v1/timestamp')) {
+      const gate = await check('verae.zapier.jobs.watch', 'zapier-app');
+      if (!gate.allow) return json(403, gate);
+      const chunks = [];
+      for await (const c of req) chunks.push(c);
+      const r = await fetch(`${MW}/zapier/v1/timestamp`, {
+        method: 'POST',
+        headers: { 'content-type': 'application/json' },
+        body: Buffer.concat(chunks),
+      });
+      return json(r.status, { ...(await r.json().catch(() => ({}))), plane: PLANE });
+    }
+    json(404, { error: 'not found', plane: PLANE });
+  } catch (err) {
+    json(502, { error: err.message });
+  }
+});
+
+server.listen(PORT, '0.0.0.0', () => {
+  process.stdout.write(`verae-access-zapier http://0.0.0.0:${PORT}/ plane=${PLANE}\n`);
+});