start.js

// start.js
// ========
//
// The main start script for SWEETnet.

// Imports
// -------
require('shelljs/global');

var config = require('./config'),
    messageServer = require('./servers/message_server'),
    apiServer = require('./servers/api_server'),
    videoServer = require('./servers/video_server'),
    // Node Libraries
    fs = require('fs'),
    // Libraries
    argv = require('minimist')(process.argv.slice(2)), // parse argv using minimist
    bunyan = require('bunyan');

// Message
// -------
console.log('SlugCam Network Package (SCnet)');
console.log('===============================');
console.log('\nNote that this app is dependent on ffmpeg (tested v2.2) and mongod (tested v2.6.1)');
console.log('Errors have been encountered using older versions of these packages (which are still in some package managers).');

// Script
// ------

// Make the data directories if they do not exist.
mkdir('-p', config.videoServer.path);
mkdir('-p', config.db.path);
if (argv['save-logs']) {
    mkdir('-p', './_logs');
}

// ### Database Setup
//
// Start the database.
var dbproc = exec('mongod --dbpath ' + config.db.path + ' --port ' + config.db.port, {
    async: true,
    silent: true
});
if (argv['save-logs']) {
    var dbLog = fs.createWriteStream('./_logs/db.log', {
        flags: 'a'
    });
    dbproc.stdout.pipe(dbLog);
}

// ### SWEETnet Modules

// `sweetLog(name)` is a simple function that creates a bunyan logger and
// returns it. We use this function to create settings across all of the
// loggers.
function sweetLog(name) {
    var config = {
        name: name,
        streams: [{
            level: 'trace',
            stream: process.stdout // log INFO and above to stdout
        }, ]
    };
    if (argv['save-logs']) {
        config.streams.push({
            level: 'trace',
            path: './_logs/SWEETnet.log' // log to a file
        });
    }
    var myLog = bunyan.createLogger(config);
    return myLog;
}

// Set the configuration in the database model module. This will carry over to 
// the rest of the modules as each future reference to the database module will
// return the same object as per node Node specs. (each call to require returns
// the cached object not a new one)
require('./servers/lib/db').setConfig(config, sweetLog('dataLib'));

// ### Start the servers
messageServer.listen(config.messageServer.port, sweetLog('messageServer'));
apiServer.listen(config.apiServer.port, sweetLog('apiServer'), config.videoServer.path);
videoServer.listen(config.videoServer.port, sweetLog('videoServer'), config.videoServer.path);