Merge ~pieq/plainbox-provider-resource:1649464-sorting-bus-hex-id into plainbox-provider-resource:master

[Pierre Equoy]

Fix graphics card bus ordering when bus ID contains hexadecimal values

The PCI bus ID that we use in the graphics card resource job in order to sort
the available graphics cards can contain hexadecimal values (e.g. 'b3') and not
only decimal values.

We now make sure these values are converted into decimal before comparing them.

To test it, you can launch (in a venv running checkbox):

    ./graphics_card_resource -c ./udev_resource

This problem occurred on servers being tested with graphics cards, so it might be interesting to test it on similar devices. We had indeed never seen this issue before on desktops/laptops.

[Sylvain Pineau (sylvain-pineau)]

Very pythonic, +1

review: Approve

diff --git a/bin/graphics_card_resource b/bin/graphics_card_resource
index 0457ae2..6c18672 100755
--- a/bin/graphics_card_resource
+++ b/bin/graphics_card_resource
@@ -93,7 +93,7 @@ def bus_ordering(record):
     if record.get('bus') == "pci":
         # We are looking for this ---------------v
         # /devices/pci0000:00/0000:00:02.1/0000:01:00.0
-        return int(record.get('path').split(':')[-2])
+        return int(record.get('path').split(':')[-2], 16)
     return 0