Update auth.js

src/handlers/auth.js

@@ -1,6 +1,13 @@
 import jwt from 'jsonwebtoken';
 
-const generatePolicy = principalId => {
+// By default, API Gateway authorizations are cached (TTL) for 300 seconds.
+// This policy will authorize all requests to the same API Gateway instance where the
+// request is coming from, thus being efficient and optimising costs.
+const generatePolicy = (principalId, methodArn) => {
+  const apiGatewayWildcard = methodArn.split('/', 2).join('/') + '/*';
+  console.log('methodArn', methodArn);
+  console.log('apiGatewayWildcard', apiGatewayWildcard);
+
   return {
     principalId,
     policyDocument: {
@@ -16,7 +23,7 @@ const generatePolicy = principalId => {
   };
 };
 
-export function handler(event) {
+export async function handler(event, context) {
   if (!event.authorizationToken) {
     throw 'Unauthorized';
   }