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server.js
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server.js
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const express = require('express');
const dotenv = require('dotenv');
const mongoose = require('mongoose');
// TO CATCH UNCAUGH EXCEPTION AND SHOW THEM IN CONSOLE
process.on('uncaughtException', (e) => {
console.log(`Error: ${e.name}!! ${e.message}`);
});
const { app } = require('./index');
//CONFIG SERCRETS FROM config.env FILE
dotenv.config({
path: `${__dirname}/config.env`,
});
//CONNECTION STRING FOR CLOUD DB
const DB = process.env.DATABASE_ATLAS.replace(
'<PASSWORD>',
process.env.DATABASE_ATLAS_PASSWORD
);
//CONNECTION STRING FOR LOCAL DB
const DBLocal = process.env.DATABASE_LOCAL;
//MONGO DB CONNECTION
const getMongoConnection = async () => {
try {
await mongoose.connect(DB, {
useNewUrlParser: true,
useCreateIndex: true,
useFindAndModify: true,
useUnifiedTopology: true,
});
console.log(`Database has been connected!.....`);
} catch (error) {
console.log(`Error:${error}`);
console.log('APPLICATION CRASHEDD 🔥🔥');
process.exit(1);
}
};
getMongoConnection();
//SERVER LISTENING
const port = process.env.PORT || 3000;
const server = app.listen(port, () => {
console.log(`Listening at port ${port}`);
});
//UNHANDELED REJECTIONS
process.on('unhandledRejection', (e) => {
//handle uncaught rejections or async code
console.log(`Error: ${e.name}!! ${e.message}`);
server.close(() => {
process.exit(1);
});
});
process.on('SIGTERM', () => { //HEROKU SPECIFIC shut down server but complete all requsst before shutting down
console.log('SIG TERM RECIVED.... SHUTTING DOWN GRACEFULLY 🥳😇')
server.close(() => {
console.log('Process Terminated ☠ ☠')
})
})