ubuntu-phone team mailing list archive

[Barry Warsaw <barry@xxxxxxxxxx>]

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On Dec 17, 2013, at 02:25 PM, Alberto Mardegan wrote:

>In fact, it was not necessary: the ApplyUpdate() could have stayed as it was,
>and yet be processed asynchronously, allowing the main loop to continue
>running.  I'm not sure if that's possible to do with the python "dbus"
>module, but it certainly is with python + Gio (via GLib introspection).

Not only possible, but trivial!  In fact, that's what Didier's patch
implements:

http://tinyurl.com/n5shrfy

The problem is that it's also kind of useless!  The async version of the
method can only return a hardcoded string, so the "no error" empty string is
used.  But what if there is an error applying the update?  The async version
can only report that via signal, thus the new Rebooting signal.

The current Rebooting signal still isn't useful enough, so in further
discussions with Didier, we're going to make it more useful for the ui:

https://bugs.launchpad.net/ubuntu-system-image/+bug/1260768

And yes, we'll make sure to do a better job of coordinated API changes
this time. ;)

- -Barry
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