safwank’s gists

safwank / gist:3262724

Created August 5, 2012 07:51

Sample view (using Jade) that displays the progress of Neo4J batch imports

	head
	script(src='http://code.jquery.com/jquery-1.6.2.min.js')
	script(src='/socket.io/socket.io.js')
	script(type='text/javascript')
	var socket = io.connect('http://localhost:3000')
	socket.on('downloadZipFileProgress', function (data) {
	var progress = data.progress

	if (progress < 100)
	$('#downloadZipFileProgress').text(progress.toFixed(2) + '%')

safwank / gist:3262602

Created August 5, 2012 07:15

Sample code on how to poll Redis to keep track of the progress of Neo4J batch imports


	var sys = require('sys'),
	http = require('http'),
	url = require('url'),
	fs = require('fs'),
	path = require('path'),
	io = require('socket.io').listen(app),
	uuid = require('node-uuid'),
	redisUtil = require('../common/redisutil');

safwank / gist:3262543

Created August 5, 2012 07:07

Sample code on how to use Redis to keep track of the total number of nodes exported to Neo4J

	Business.loadFromCSV = function(csvFilePath) {
	csv().fromPath(csvFilePath, { columns: true, trim: true })
	.on('data', loadBusiness)
	.on('end', handleSuccess)
	.on('error', handleLoadError);
	};

	function loadBusiness(data, index) {
	var business = data;
	util.removeNullOrEmptyPropertiesIn(business);

safwank / gist:3152328

Created July 20, 2012 18:08

Sample code on how to remove null or empty properties before creating a node in Neo4J.

	function isNullOrEmpty(value) {
	return !value \|\| value.length === 0 \|\| /^\s*$/.test(value);
	}

	function removeNullOrEmptyPropertiesIn(object) {
	for (var propertyName in object)
	{
	var propertyValue = object[propertyName];

	if (isNullOrEmpty(propertyValue))

safwank / business.js

Created July 1, 2012 01:22

Sample code on how to populate a Neo4j database with CSV data

	// Initialization

	var csv = require('csv');
	var neo4j = require('neo4j');
	var db = new neo4j.GraphDatabase(process.env.NEO4J_URL \|\| 'http://localhost:7474');

	// Constants:

	var INDEX_NAME = 'nodes';
	var INDEX_KEY = 'type';

safwank / TweetStreamer.cs

Created June 17, 2012 07:12

Streaming tweets in 'real-time' using Rx

	public partial class TweetStreamer : Form
	{
	private List<Tweet> tweets;
	private readonly IObservable<EventPattern<EventArgs>> stopClicked;
	private readonly DataContractJsonSerializer jsonSerializer;

	public TweetStreamer()
	{
	InitializeComponent();
	jsonSerializer = new DataContractJsonSerializer(typeof (TweetSearchResult));

safwank / gist:2940031

Created June 16, 2012 05:09

Example usage of InstanceSpinner.ps1

	powershell .\InstanceSpinner.ps1 -operation start -secretKeyId "[your secret key]" -secretAccessKeyId "[your access key]" -instanceIds "[first instance ID]","[second instance ID]"

	powershell .\InstanceSpinner.ps1 -operation stop -secretKeyId "[your secret key]" -secretAccessKeyId "[your access key]" -instanceIds "[first instance ID]","[second instance ID]"

safwank / InstanceSpinner.ps1

Created June 16, 2012 03:17

A simple PowerShell script to spin EC2 instances up and down.

	param([string]$operation, [string]$secretKeyId, [string]$secretAccessKeyId, [string[]]$instanceIds)

	Add-Type -Path ".\AWSSDK.dll"

	function StartInstances()
	{
	$ec2Client = CreateEC2Client

	$request = New-Object -TypeName Amazon.EC2.Model.StartInstancesRequest
	$request.InstanceId = GetInstancesFromParameterList

Safwan Kamarrudin safwank