Archive for August, 2011

D-Bus and Python: asynchronous method implementation

Tuesday, August 16th, 2011

This is a quick demonstration of how to implement a D-Bus method in Python using asynchronous callbacks.

I recently added support in system-config-printer for determining the best driver to use for a particular printer.  This is an expensive operation, largely because of the time it takes to get a list of available drivers from CUPS, and the Python program providing the D-Bus service also provides other services.  I wanted the program to be able to deal with other callers while the CUPS operation was in progress.  Here’s how that was done.

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Avahi support for CUPS 1.5.0

Tuesday, August 9th, 2011

The Avahi support for CUPS has been ported to 1.5.0 now.  I’ve updated the git repository (tracking upstream CUPS, as well as having feature branches for Avahi):
git://fedorapeople.org/home/fedora/twaugh/public_html/cups-avahi.git

Fedora packages for F-16 and rawhide have been built.