Using screen scraping to expose legacy web pages in RSS

As part of my (almost) daily drive to and from one of my clients I pass through the sub-sea Oslofjord tunnel (Oslofjordtunnelen). Now what has driving got to do with screen scraping and RSS, you say?

Hang on, I’m getting there.

Below is a map extract that shows part of my route. The topmost pin is where I start out, the bottom-most pin is the Oslofjord tunnel. The pin in the middle is where, more often than not, a sign shows up stating that the tunnel is closed for maintenance.  You can imagine my frustration when I’m forced to drive all the way back north to get around the Oslofjord!

Map picture

To avoid that pain I set out to find a feed with traffic status updates and ended up at this page published by the Norwegian Public Roads Administration (NPRA). The page have regularly updated traffic information (all in Norwegian mind you) but to my frustration all as static web pages. No feed in sight!

At last here comes the screen scraping into play. You could write up your own scraper in any modern runtime these days. But being a good/lazy developer I know there are already quite good services out there that makes it a breeze setting up feeds with data scraped off of web pages. And lo and behold, I now burn a feed with the latest traffic updates!

So… basking in the glory of my genius for a couple of days I thought it a good idea to write up this blog post for the greater good of mankind. To make the story a bit shorter, what I discovered while rummaging around the NPRA site is that they indeed have great support for RSS!

Feeling a bit stupid I will now go and redirect my FeedBurner setup…and please let me know if there is a moral to this story.

Good night.


Going to Microsoft PDC 2009!

Only one year after the most successful PDC 08, I find myself (and my company) going to Los Angeles once more. PDC 09 looks promising with sessions covering the .Net Framework 4, Visual Studio and Team System 2010, Windows Azure, DirectX 11, Silverlight 3, and much more.


Moving Peter’s Pattern

The time have come for the trusty Eternia server to let go of my blog. I’m giving it this new home (presumably faster and more stable), with, as you probably think too,  a more befitting name.

Now, for those of us that didn’t realize the value of services like FeedBurner when setting up a new blog, I will highlight one advantage that I wish I knew when I started out blogging. Namely that exposing my feed via FeedBurner will save my faithful subscribers from having to update their subscription when the blog will have to move.

The feed address is hereby I can promise you that this link will not change. That is, unless Google goes out of business 🙂