feat: cpp addon with multithreading for predictions

Author: SysSn13

.vscode/settings.json

@@ -0,0 +1,5 @@
+{
+    "files.associations": {
+        "iostream": "cpp"
+    }
+}

background.js

@@ -0,0 +1,5 @@
+
+
+console.log("background is running...");
+const schedualing = require("./services/scheduling");
+schedualing.fetchAllContests();

main.js

@@ -0,0 +1,24 @@
+if (process.env.NODE_ENV !== "production") {
+    require("dotenv").config();
+}
+
+const mongoose = require("mongoose");
+mongoose.connect(process.env.DATABASE_URL, {
+    useNewUrlParser: true,
+    useUnifiedTopology: true,
+});
+mongoose.set("useFindAndModify", false);
+
+const db = mongoose.connection;
+
+db.on("error", (error) => console.error(error));
+db.once("open", () => {
+    console.log("Connected to Mongoose");
+
+    if (process.env.WEB == true) {
+        require("./server");
+    }
+    if (process.env.BACKGROUND == true) {
+        require("./background");
+    }
+});

package.json

@@ -4,8 +4,8 @@
   "description": "",
   "main": "server.js",
   "scripts": {
-    "start": "node server.js",
-    "dev": "nodemon server.js"
+    "start": "node main.js",
+    "dev": "nodemon main.js --max_old_space_size=1024"
   },
   "keywords": [],
   "author": "",

server.js

@@ -1,35 +1,20 @@
-if(process.env.NODE_ENV !== 'production') {
-    require('dotenv').config()
-}
-
-const express = require('express')
-const app = express()
-app.use(express.urlencoded({extended: true}))
-const expressLayouts = require('express-ejs-layouts')
-const indexRouter = require('./routes/index')
-app.set('view engine','ejs')
-app.set('views',__dirname +'/views')
-app.set('layout','layouts/layout')
-app.use(expressLayouts)
-app.use(express.static('public'))
-
-const mongoose = require("mongoose")
-mongoose.connect(process.env.DATABASE_URL,{
-    useNewUrlParser:true,
-    useUnifiedTopology: true
-})
-const db = mongoose.connection
-db.on('error',error => console.error(error))
-db.once('open',() => console.log('Connected to Mongoose'))
-mongoose.set('useFindAndModify', false);
-
-app.use('/',indexRouter)
-
-app.listen(process.env.PORT || 3000)
-
-// const predict = require('./services/predict')
-const schedualing = require('./services/scheduling')
-schedualing.fetchAllContests()
-// const users = require('./services/users')
-const contest = require('./services/contests')
+const express = require("express");
+const app = express();
+app.use(express.urlencoded({ extended: true }));
+const expressLayouts = require("express-ejs-layouts");
+const indexRouter = require("./routes/index");
+app.set("view engine", "ejs");
+app.set("views", __dirname + "/views");
+app.set("layout", "layouts/layout");
+app.use(expressLayouts);
+app.use(express.static("public"));
+app.use("/", indexRouter);
 
+const port = process.env.PORT || 8080;
+app.listen(port, "0.0.0.0", (err) => {
+    if (err) {
+        console.error(err);
+        return;
+    }
+    console.log("Listening on " + port);
+});

services/predict-addon/addon.js

@@ -0,0 +1,2 @@
+const addon = require("./build/Release/predict_addon");
+module.exports = addon;

services/predict-addon/binding.gyp

@@ -0,0 +1,8 @@
+{
+    "targets": [
+        {
+            "target_name": "predict_addon",
+            "sources": ["./cpp/main.cpp"],
+        },
+    ]
+}