cache entries get corrupted and lead to hard to diagnose failures

[Soren Hansen]

As an example, the landing_targets_collection_link of a branch object points to a json object holding a list of dicts that have no web_link key.

[Soren Hansen (soren)]

Hm... At least that's what I see when it's been processed through launchpadlib..

>>> lp.branches.getByUniqueName(unique_name='~ttx/nova/lp791627').landing_targets[0].web_link
  File "<console>", line 1, in <module>
  File "/usr/lib/python2.7/dist-packages/lazr/restfulclient/resource.py", line 673, in __getattr__
    return super(Entry, self).__getattr__(name)
  File "/usr/lib/python2.7/dist-packages/lazr/restfulclient/resource.py", line 319, in __getattr__
    % (self.__class__.__name__, attr))
AttributeError: 'Entry' object has no attribute 'web_link'

However, if accessing https://api.launchpad.net/1.0/~ttx/nova/lp791627 with curl, I do see landing_targets_collection_link pointing to https://api.launchpad.net/1.0/~ttx/nova/lp791627/landing_targets, which in turn contains an element with the web_link key. I could have sworn I saw it return an element without this key a bit earlier, though. :-/

[Soren Hansen (soren)]

Apparently, this was caused by a stale cache of the WSDL file. Clearing the ~/.launchpadlib cache fixed this entirely.