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Sunday, May 22, 2011

My First NodeJS Application - A Company Logo Generator

Recently ive decided to learn NodeJS, so a few weeks back i wrote a hello world application. Ive been using Microsoft .NET commercially for around 10 years and although we do use a fair amount of open source technology at BuzzNumbers, i dont write that much code these days so i wanted to get my hands dirty.

I had been looking for a real world application to build in NodeJS and over the last week a requirement emerged for an service that enables me to input a company name in a IMG SRC and get back the company logo.

This gives me flexability so i can just hotlink a company logo anytime when ever im blogging or as part of a client reporting application and the company logo will embed nicely

For Example

src=" http://companylogogenerator.nickhac.com?q=qantas"
or src=" http://companylogogenerator.nickhac.com?q=westpac"
    

To achieve this i had to use overcome a number of technical challenges...
  • Extract parameters from querystring to get the company name
  • Build up a URL based on the URL and Company Name
  • Download HTML from an Image Search Webpage
  • Parse the HTML and extract URL's of Images
  • Redirect the Web Request to serve up the image from the 3rd party suite
  • Keep the Web Server Always Online and handle errors (using forever)
Here is the code http://pastebin.com/iY2gwUDM

Posted by Nick HaC @ 10:26 PM


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