add datadog to count number of hooks events

Author: podviaznikov

lib/routes/actions/github.js

@@ -29,6 +29,7 @@ var pluck = require('101/pluck');
 var noop = require('101/noop');
 var error = require('error');
 var github = require('middlewares/apis').github;
+var dogstatsd = require('models/datadog');
 
 /** Receive the Github hooks
  *  @event POST rest/actions/github
@@ -43,6 +44,7 @@ var pushSessionUser = {
 };
 
 app.post('/actions/github/',
+  reportDatadogEvent,
   mw.headers('user-agent').require().matches(/^GitHub.*$/),
   mw.headers('x-github-event', 'x-github-delivery').require(),
   mw.headers('x-github-event').matches(/^ping$/).then(
@@ -141,6 +143,13 @@ app.post('/actions/github/',
   mw.res.status(202),
   mw.res.send('No action set up for that payload.'));
 
+
+function reportDatadogEvent (req, res, next) {
+  var eventName = req.get('x-github-event') || '';
+  dogstatsd.increment('api.actions.github.events', ['event:' + eventName]);
+  next();
+}
+
 function parseGitHubPRData (req, res, next) {
   var repository = keypather.get(req, 'body.repository');
   if (!repository) {