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stats-server.js
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stats-server.js
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var fs = require('fs'),
dgram = require('dgram'),
async = require('async'),
csv = require('csv'),
_ = require('underscore'),
Mixpanel = require('mixpanel'),
config = require('./config.json');
// asynchronous and non-blocking thru event-emitting
var udpServer = dgram.createSocket("udp4");
udpServer.on("message", function (msgBuf, rinfo) {
var msg = msgBuf.toString();
var now = new Date();
var dateAndTime = now.toUTCString();
//console.log(dateAndTime + ": tmx-analytics received: " + msg + " from " + rinfo.address + ":" + rinfo.port);
async.parallel({
csvLogger: function(callback){
var jsonData = JSON.parse(msg.split("|")[2]) || {};
var csvFields = _.values(jsonData).toString();
var csvLog = csv()
.from(csvFields)
.to(config.csvLog, {flags: 'a', header: true})
//.to(console.log)
.on('error', function(error){
fs.appendFileSync(config.errorLog, dateAndTime+': CSV LOGGING ERROR: '+error.message+'\n', encoding='utf8');
callback(null, false);
})
.on('close', function(){
callback(null, true);
});
},
mixPanelLogger: function(callback){
var statData = msg.split(":")[0];
var jsonData = JSON.parse(msg.split("|")[2]) || {};
var mixpanel = Mixpanel.init(config.mixpanelKey);
mixpanel.track(statData, jsonData, function(err) {
if (err){
fs.appendFileSync(config.errorLog, dateAndTime+': MIXPANEL LOGGING ERROR: '+err+'\n', encoding='utf8');
callback(null, false);
} else {
callback(null, true);
}
});
},
statsdLogger: function(callback){
var statsData = msg.substring(0,msg.lastIndexOf('|'));
var msgBuffer = new Buffer(statsData);
var statSender = dgram.createSocket("udp4");
statSender.send(msgBuffer, 0, msgBuffer.length, config.statsdPort, config.statsdHost, function(err, bytes) {
if (err) {
fs.appendFileSync(config.errorLog, dateAndTime+': STATSD LOGGING ERROR: '+err+'\n', encoding='utf8');
statSender.close();
callback(null, false);
} else {
statSender.close();
callback(null, true);
}
});
},
},
function(err, results){
if(err){
fs.appendFileSync(config.errorLog, dateAndTime+': ANALYTICS PROCESS ERROR: '+err+'\n', encoding='utf8');
} else {
//console.log(dateAndTime+": tmx-analytics processed: " + msg + " with results: ");
//console.log(results);
//results should = {csvLogger: true, mixPanelLogger: true, statsdLogger: true}
}
});
}).bind(config.port);