AppEngine Python PSHB Service using Prospective Search Service: FrackIM Code available.

[Bob Wyman]

I've uploaded some sample code demonstrating a Python-based PSHB subscriber which provides a PSHB to XMPP gateway. You can find the code at http://code.google.com/p/frackim/source/browse/ and a running demo is at http://frackim.appspot.com . Feel free to use your XMPP client to subscribe to receive updates from the demo. Also, I would greatly appreciate any coding/feature suggestions from the many of your who are probably much better Python coders than I am...

"FrackIM" allows you to "Follow" or "Track" messages which originate either from XMPP IM or from PubSubHubbub. Read the instructions and then add fra...@appspot.com to your buddy list.

The software uses the AppEngine Prospective Search Service and delivers results using AppEngine's XMPP service. Topic-based behavior is implemented by subscribing to messages using a query that constrains the "follow" attribute of messages. This attribute contains either an XMPP JID or an HTTP URL (the URL is, of course, a PSHB "topic"). For example:

/subscribe follow:huffingtonpost.com is like a topic-based subscription in PSHB today.

To get "content-based" behavior, you create a subscription that constrains the "track" attribute of a message. Thus:

/subscribe track:obama is content-based and will match any IM or PSHB message that contains the word "Obama".

of course, you can combine the two together like this:

/subscribe follow:huffingtonpost.com AND track:obama which would return only messages published by HuffingtonPost that contain the word Obama.

I hope at least some of you find this to be useful. Please do provide suggestions for how to improve this tool. I am also interested in any suggestions you may have for other "push" services for which I could build and interface to broaden the range of content that is handled by this tool.

bob wyman