automated deployment from bitbucket using post hook

app.js

var express = require('express'),
	exec = require('child_process').exec,
	config = require('./config.json'),
	bodyParser = require('body-parser');

var app = express();

app.use(bodyParser());


app.post('/deploy', function(req, res){
	payload = JSON.parse(req.body.payload);
	url = payload.canon_url + payload.repository.absolute_url;

	config.list.forEach(function(item) {
		item.url += !/\/$/.test(item.url) ? "/" : "";
		if( item.url == url ) {
			exec('git pull', {cwd: item.path}, function(error, stdout, stderr) {
				if( error ) {
					res.send('Error');
				} else {
					res.send('OK');
				}
			});
		}
	});
});



app.listen(9999, function() {
    console.log('Listening on port %d', this.address().port);
});

config.json

{
	"list": [
		{
			"url": "bitbucket url (e.g. https://bitbucket.org/greatdg/testproject/)",
			"path": "pull path (e.g. /Users/greatdg/Workspaces/testproject"
		}
	]
}

package.json

{
  "name": "bitbucket-post-hook",
  "description": "",
  "version": "0.0.1",
  "private": true,
  "dependencies": {
    "express": "*",
    "body-parser": "*"
  }
}