How to list all MongoDB databases in Node.js?

Question

I\'ve tried to find a solution to this question in: http://mongodb.github.io/node-mongodb-native/

However, I could not find a solution to listing all available Mongo

Answer 1

Use db.admin().listDatabases.

Answer 2

*Its difficult to get list by db.admin().listDatabases, below code will work fine in nodejs *

const { promisify } = require('util');
const exec = promisify(require('child_process').exec)
async function test() {
  var res = await exec('mongo  --eval "db.adminCommand( { listDatabases: 1 }         
)" --quiet')
  return { res }
}

test()
  .then(resp => {
    console.log('All dbs', JSON.parse(resp.res.stdout).databases)
  })
test()

Answer 3

You can do this now with the Node Mongo driver (tested with 3.5)

const MongoClient = require("mongodb").MongoClient;

const url = "mongodb://localhost:27017/";
const client = new MongoClient(url, { useUnifiedTopology: true }); // useUnifiedTopology removes a warning

// Connect
client
  .connect()
  .then(client =>
    client
      .db()
      .admin()
      .listDatabases() // Returns a promise that will resolve to the list of databases
  )
  .then(dbs => {
    console.log("Mongo databases", dbs);
  })
  .finally(() => client.close()); // Closing after getting the data