Separate Zapier, web, API, and leaf access planes with NATS authz

Zapier is one ingress. Direct web, customer API, and S2S leaf nodes are their own services. Every hop to an internal subject must pass verae.access.authz.check (default deny by plane).

packages/verae-access-web/src/server.js

@@ -0,0 +1,38 @@
+#!/usr/bin/env node
+/** Direct customer web access. Not Zapier. NATS only after authz. */
+import http from 'node:http';
+import { PLANE, statement, reload } from './gate.js';
+
+const PORT = Number(process.env.PORT || 3021);
+
+const server = http.createServer(async (req, res) => {
+  const url = new URL(req.url || '/', `http://127.0.0.1:${PORT}`);
+  const json = (code, obj) => {
+    res.writeHead(code, { 'content-type': 'application/json' });
+    res.end(JSON.stringify(obj));
+  };
+  try {
+    if (req.method === 'GET' && url.pathname === '/health') {
+      return json(200, { ok: true, role: 'verae-access-web', plane: PLANE });
+    }
+    const st = url.pathname.match(/^\/statement\/([^/]+)$/);
+    if (req.method === 'GET' && st) {
+      const out = await statement(st[1], st[1]);
+      return json(out.status, out.body);
+    }
+    if (req.method === 'POST' && url.pathname === '/reload') {
+      const chunks = [];
+      for await (const c of req) chunks.push(c);
+      const body = JSON.parse(Buffer.concat(chunks).toString('utf8') || '{}');
+      const out = await reload(body.customerId, body.cents, body.customerId);
+      return json(out.status, out.body);
+    }
+    json(404, { error: 'not found' });
+  } catch (err) {
+    json(502, { error: err.message });
+  }
+});
+
+server.listen(PORT, '0.0.0.0', () => {
+  process.stdout.write(`verae-access-web http://0.0.0.0:${PORT}/ plane=${PLANE}\n`);
+});