Windows Azure Feed Reader Episode 4: The OPML Edition

As you’ve no doubt surmised from the title, this weeks episode deals almost entirely with the OPML reader and fitting it in with the rest of our code base.

If you remember, last week I showed a brand new version of the OPML reader code using LINQ and Extension Methods. This week, we begin by testing said code. Given that its never been been tested before, bugs are virtually guaranteed. Hence we debug the code, make the appropriate changes and fold the changes back into our code base.

We then go on to creating an Upload page to upload the OPML file. We store the OPML file in a Blob and drop a message in a special queue for this OPML file to be uploaded. We make the changes to WorkerRole.cs to pull that message off the queue and process the file correctly, retrieve the feeds and store them. If you’ve been following along, none of this code will be earth shattering to you either.

The fact is that a) making the show any longer would bust my Vimeo Basic upload limit  and b) I couldn’t think of anything else to do that could be completed in ~10 minutes.

The good thing is that we’re back to our 45 minute-ish show time, after last weeks aberration.

Don’t forget, you can head over to Vimeo to see the show in all its HD glory: http://www.vimeo.com/14510034

After last weeks harsh lessons in web-casting, file backup and the difference between 480p and 720p when displaying code, this weeks show should go perfectly well.

Enjoy.

Remember, the code lives at http://windowsazurefeeds.codeplex.com

PS. Some occasional interference in the sound. I’m wondering if the subwoofer is causing it while I’m recording it. Apologies.