support authentication via APIKEY configuration

src/middleware/auth.ts

@@ -0,0 +1,33 @@
+import { FastifyRequest, FastifyReply } from "fastify";
+
+export const apiKeyAuth =
+  (config: any) =>
+  (req: FastifyRequest, reply: FastifyReply, done: () => void) => {
+    if (["/", "/health"].includes(req.url)) {
+      return done();
+    }
+    const apiKey = config.APIKEY;
+
+    if (!apiKey) {
+      return done();
+    }
+
+    const authKey: string =
+      req.headers.authorization || req.headers["x-api-key"];
+    if (!authKey) {
+      reply.status(401).send("APIKEY is missing");
+      return;
+    }
+    let token = "";
+    if (authKey.startsWith("Bearer")) {
+      token = authKey.split(" ")[1];
+    } else {
+      token = authKey;
+    }
+    if (token !== apiKey) {
+      reply.status(401).send("Invalid API key");
+      return;
+    }
+
+    done();
+  };