Now that in its 2.0 incarnation Ejabberd supports publish-subscribe and therefore personal eventing, it is time to play with it and demonstrate to the wider world the marvellous use-cases that the future holds. A nice first one that should be popular and therefore useful for propaganda purposes is using Psi so that contacts can see in your presence status the music that you are playing. I stumbled upon an Amarok script that notifies Psi’s through the tune file interface and lets Psi publish the currently playing song status via PEP – and it looked good.
PEP is defined “XEP-0163: Personal Eventing via Pubsub“. And Pubsub is defined by “XEP-0060: Publish-Subscribe“. So far so good. But digging around a bit I learned about “XEP-0118: User Tune” and then it dawned on me that there appeared to be room for improvement : the script outputs a composite “tune” element which is a radical simplification of the schema specified in XEP-0118.
So I had a go at modifying the script to get it as close to the specification as possible. You can judge of the resulting output for yourself : not quite XEP-0118 compliant but a good step in that direction.
The source code is available from the usual dump, but if you are an Amarok and Psi user you might actually want to use the Amarok script package that installs and runs in a coupe of clicks – thanks to the previous authors whose work I built upon.
While I was at it I discovered a bug that causes Psi 0.11 to use the element tag “source” to contain the album information, so I promptly provided the psi project team with the trivial patch needed.
It is is 3:30 AM and a few hours ago I did not realize that upgrading Ejabberd would get me that far for today…