Establish elasticsearch connection using nodejs synchronously

Question

I have a nodejs application where i want to make connection with elasticsearch and other database like mongodb and then create server but i don't want to use callback functions . is there any way to hold execution of nodejs code while function is establishing connections with ES cluster.

function loadConfFile(){

}
/* wait for above to complete */
function createESConnection(){

}
/* wait for above to complete */
function createMongoDBConnection(){

}

const express = require('express');
/* and so on  */

Yuri G · Accepted Answer · 2021-11-30 16:57:02Z

1

Wrap into promise with async:

async function createESConnection(){

}

Use await to... well, wait until it ends:

let esConn = await createESConnection()

But there's a caveat: everything using that async function must go async as well (read "go Promise-based")

P.S. Hope you're not restricted to some relic JS version not having that

answered Nov 30, 2021 at 16:57

Yuri G

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