async-connection.coffee

ffmpeg = require 'fluent-ffmpeg'
mongoose = require 'mongoose'
amqp = require 'amqp'
async = require 'async'

# Connect to RabbitMQ
amqpConnect = (done) ->
    amqpConnection = amqp.createConnection {host: 'localhost'}
    amqpConnection.on 'ready', done.bind(this, null, amqpConnection);
    amqpConnection.on 'error', done.bind(this, "Failed connecting to rabbit");

# Connect to Mongo
mongoConnect = (done) ->
    mongoose.connection.on 'open', done.bind(this, null, mongoose);
    mongoose.connection.on 'error', done.bind(this, "Failed connecting to mongo");

# Wait for connections, if completed successfully, continue
async.parallel {amqp: amqpConnect, mongo: mongoConnect}, (err, res) ->
    amqpConn = res.amqp; 
    mongooseDone = res.mongo;

callbacks.coffee

# Wait for connections, if completed successfully, continue
async.parallel {
    amqp: amqp.createConnection.bind(amqp, {host: 'localhost'}), 
    mongo: mongoose.openConnection.bind(mongoose)
}, (err, res) ->
    amqpConn = res.amqp; 
    mongooseDone = res.mongo;