Umbau Scripte

gateway.cjs

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+const http = require("http");
+const Redis = require("ioredis");
+
+const REDIS_HOST = process.env.REDIS_HOST || "data_jobs";
+const REDIS_PORT = Number(process.env.REDIS_PORT || 6379);
+const JOB_QUEUE  = process.env.JOB_QUEUE  || "grist:jobs";
+const RES_QUEUE  = process.env.RESULT_QUEUE || "grist:results";
+
+const redis = new Redis({ host: REDIS_HOST, port: REDIS_PORT });
+
+function cors(res){
+  res.setHeader("Access-Control-Allow-Origin","*");
+  res.setHeader("Access-Control-Allow-Methods","GET, POST, OPTIONS");
+  res.setHeader("Access-Control-Allow-Headers","*");
+}
+
+const server = http.createServer(async (req, res) => {
+  cors(res);
+  if (req.method === "OPTIONS") { res.writeHead(204); return res.end(); }
+  const path = req.url.split("?")[0];
+
+  if (req.method === "GET" && path === "/health") {
+    res.writeHead(200, {"content-type":"text/plain"}); return res.end("ok");
+  }
+
+  if (req.method === "GET" && (path === "/places" || path === "/api/places")) {
+    try {
+      await redis.lpush(JOB_QUEUE, "places");
+      const reply = await redis.blpop(RES_QUEUE, 8);
+      if (!reply) {
+        res.writeHead(202, {"content-type":"application/json"});
+        return res.end('{"ok":false,"status":"queued-or-timeout"}');
+      }
+      const [, value] = reply;
+      res.writeHead(200, {"content-type":"application/json"});
+      return res.end(JSON.stringify({ ok:true, raw:value }));
+    } catch (e) {
+      res.writeHead(500, {"content-type":"application/json"});
+      return res.end(JSON.stringify({ ok:false, error:e.message }));
+    }
+  }
+
+  res.writeHead(404, {"content-type":"application/json"});
+  res.end('{"error":"not found"}');
+});
+
+server.listen(8080, "0.0.0.0", () => console.log("[gateway] listening 8080"));

package.json

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+{
+  "name": "data-gateway",
+  "version": "1.0.0",
+  "type": "commonjs",
+  "main": "app.cjs",
+  "dependencies": {
+    "ioredis": "^5.3.2"
+  },
+  "scripts": {
+    "start": "gateway.cjs"
+  }
+}