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Stream Tweets in MongoDB with Node.JS

July 5, 2013 1 comment

Suppose we want store al our “mongodb” tweets in a MongoDB database.

We need 2 additional node packages:

1) ntwitter (Asynchronous Twitter REST/stream/search client API for Node.js)
2) mongodb (A Node.js driver for MongoDB). Of course there are more MongoDB drivers.

Create a Node.js project “twitterstream” and add the 2 packages with the following commands:

$ npm install ntwitter
$ npm install mongodb

We need an existing twitter account and make a credential file for example credentials.js.

var credentials = {
    consumer_key: '3h7ryXnH209mHNWvTgon5A',
    consumer_secret: 'tD5OdqXw1qbDMrFbrtPIRRl4fEyUsKFXT2kZLQaMpVA',
    access_token_key: '474665342-wuRquALXNQZPYABUiOnXCmVSxyU2LIinV6VwpWMW',
    access_token_secret: 'k01HuXdl8umwt5rZcDDk0OgQJbhkiFlPv2dCAmHXQ'
};

module.exports = credentials;

And now we create the main file twitter.js with the following code:

var twitter = require('ntwitter');
var credentials = require('./credentials.js');

var t = new twitter({
    consumer_key: credentials.consumer_key,
    consumer_secret: credentials.consumer_secret,
    access_token_key: credentials.access_token_key,
    access_token_secret: credentials.access_token_secret
});

var mongo = require('mongodb');

var Server = mongo.Server,
    Db = mongo.Db,
    assert = require('assert')
    BSON = mongo.BSONPure;

var server = new Server('localhost', 27017, {auto_reconnect: true});
db = new Db('twitterstream', server);
// open db
db.open(function(err, db) {
  assert.equal(null, err);

  t.stream(
    'statuses/filter',
    { track: ['mongodb'] },
    function(stream) {
        stream.on('data', function(tweet) {
            db.collection('streamadams', function(err, collection) {
               collection.insert({'tweet': tweet.text, {safe:true}
                                 , function(err, result) {});
            });
        });
    }
  );
});

Simply start the twitter.js with:

$ node twitter.js

Succes with Node.JS and MongoDB!

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