Changes to enable deployment on AWS ec2 and lambda. (#206)

* Changes to enable deployment on AWS ec2 and lambda.

1) ecosystem.config.js is a config file so that environment variables can be passed via pm2 when running on ec2.

2) changes in index.mjs are required so that subscriptions persist  and connections dont close.

* Update index.js

Author: Aadeesh11

ecosystem.config.js

@@ -0,0 +1,30 @@
+module.exports = {
+    apps: [
+        {
+            script: "./index.mjs",
+            watch: ".",
+            env: {
+                DB: "",
+                JWT_SECRET: "",
+                REDIS_AUTH: "",
+                REDIS_USERNAME: "",
+                REDIS_URL: "",
+                REDIS_PORT: "",
+                INSTANCE: "",
+            },
+        },
+    ],
+
+    deploy: {
+        production: {
+            user: "SSH_USERNAME",
+            host: "SSH_HOSTMACHINE",
+            ref: "origin/master",
+            repo: "GIT_REPOSITORY",
+            path: "DESTINATION_PATH",
+            "pre-deploy-local": "",
+            "post-deploy": "npm install && pm2 reload ecosystem.config.js --env production",
+            "pre-setup": "",
+        },
+    },
+};

graphql/resolvers.js

@@ -26,8 +26,13 @@ const resolvers = {
             const beacon = await Beacon.findById(id).populate("landmarks leader");
             if (!beacon) return new UserInputError("No beacon exists with that id.");
             // return error iff user not in beacon
-            if (beacon.leader.id !== user.id && !beacon.followers.includes(user))
-                return new Error("User should be a part of beacon");
+            let flag = false;
+            for (let i = 0; i < beacon.followers.length; i++)
+                if (beacon.followers[i].id === user.id) {
+                    flag = true;
+                    break;
+                }
+            if (beacon.leader.id !== user.id && !flag) return new Error("User should be a part of beacon");
             return beacon;
         },
         group: async (_parent, { id }, { user }) => {

index.mjs

@@ -24,8 +24,11 @@ const server = new ApolloServer({
         const user = req?.user ? await User.findById(req.user.sub).populate("beacons") : null;
         return { user, pubsub };
     },
+    stopGracePeriodMillis: Infinity,
+    stopOnTerminationSignals: false,
     subscriptions: {
-        path: "/subscriptions",
+        path: "/graphql",
+        keepAlive: 9000,
         onConnect: async connectionParams => {
             console.log("Client connected");
             const authorization = connectionParams["Authorization"];