alex-hladun

could not requestRemote: {
    "methodName": "query",
    "params": [
        {
            "query": {
                "selector": {
                    "borerShiftProductionId": {
                        "$eq": "9d2d0e6f-6acb-4b9c-96e7-ba4153fa887d"
                    }
                },

alex-hladun

  // Save a session for a user and their online status
  saveSession(id: string, { username, connected }: { [key: string]: string }) {
    this.redisClient
      .multi()
      .hmset(`session:${id}`, "username", username, "connected", connected)
      .expire(`session:${id}`, SESSION_TTL)
      .exec();
  }

alex-hladun

class SocketManager {
  io: SocketIO.Server;
  pubClient: redis.RedisClient;
  sessionStore: RedisSessionStore;
  serverConfig: IServerConfig;
  redisEnabled: boolean;
  dynamoEnabled: boolean;

  constructor(server: http.Server, config: IServerConfig) {
    this.configureMiddleware();

alex-hladun

import { joinRoom, saveRoomMessage } from "./DynamoPuts";

class SocketManager {
  io: SocketIO.Server;
  dynamoEnabled: boolean;
  redisEnabled: boolean;
  dynamoEnabled: boolean;

  constructor(server: http.Server, config: IServerConfig) {
    this.generateSocketServer(server);

alex-hladun

import { Server, Socket } from "socket.io";

Class SocketManager {
  io: SocketIO.Server;
  pubClient: redis.RedisClient;
  sessionStore: RedisSessionStore;
  serverConfig: IServerConfig;
  redisEnabled: boolean;
  dynamoEnabled: boolean;

alex-hladun

getOnlineUsers = async () => {
    const keys = new Set();
    let cursor = "0";
    do {
      await new Promise((resolve, reject) =>
        this.redisClient.scan(
          cursor,
          "MATCH",
          "session:*",
          "COUNT",

alex-hladun

  connectToHostedRedis = (redisEndpoint: string) => {
    this.pubClient = new RedisClient({ host: redisEndpoint, port: 6379 });
    const subClient = this.pubClient.duplicate();
    this.io.adapter(createAdapter({ pubClient: this.pubClient, subClient }));
    this.sessionStore = new RedisSessionStore(this.pubClient);
  };

alex-hladun

// On the back-end
this.io = new Server(server, {
      cors: {
        // Would change origin to eventual DNS for React app
        origin: "http://localhost:3000",
        methods: ["GET", "POST"],
        credentials: true
      },
      allowEIO3: true, // Whether to enable compatibility with Socket.IO v2 clients.
      maxHttpBufferSize: 1024, // max message payload size (prevents clients from sending gigabytes of data)

alex-hladun

import { Request, Response } from "express";
import { createUser } from "./DynamoPuts";
import { verifyLogin } from "./DynamoQueries";

const registerRoutes = (dynamoEnabled: boolean) => {
  const express = require("express");
  const router = express.Router();

  router.post("/login", async (req: Request, res: Response) => {
    if (dynamoEnabled) {

alex-hladun

import { createServer } from "http";
import express from "express";
import cors from "cors";

const app = express();
app.use(
  cors({
    origin: "http://localhost:3000",
    methods: ["GET", "POST"],
    credentials: true