Mongo db back up

backup.js

var shell     = require('shelljs'),
    cfg       = require('./cfg'),
    DSS       = require('distack'),
    co         = require('co'),
    filestore = new DSS(cfg.storestack);

require('datejs');

var backupName = new Date().toString('yyyy-MM-dd-HH-mm') + '.tar.gz';

function storeWrite(tags, key, path)  {
    return function (cb) {
        filestore.write(tags, key, path, cb);
    };
}

if (! shell.which('mongodump')) {
  shell.echo('Sorry, this script requires mongodump');
  shell.exit(1);
}

// dumb db
shell.exec('mongodump --db '+  cfg.mongo);

// tar
shell.exec('tar -zcvf dump.tar.gz dump/');

// remove dump folder
shell.exec('rm -r dump');

// rename to current date
shell.exec('mv dump.tar.gz ' + backupName);

co(function* () {
    yield storeWrite(
        ['cloud'],
        'db-backups/' + backupName,
        backupName
    );
})(function (err) {
    if (err) {
        throw err;
    }

    // remove local file
    shell.exec('rm ' + backupName);
    console.log('done');
});