ipdevpoll : Save stage failed with unhandled AttributeError

[macrom]

NAV : 3.6.0b6
OS : RHEL 5.5

ipdevpoll gives this error for a number of our netboxes. I cant find any similarities between them :

2010-09-29 10:55:54,464 [ERROR] [nav.ipdevpoll.jobs.jobhandler.inventory.(gw.foo.tld)] Save stage failed with unhandled error:
Traceback (most recent call last):
  File "/usr/lib/python2.4/threading.py", line 422, in run
    self.__target(*self.__args, **self.__kwargs)
  File "/usr/lib/python2.4/site-packages/Twisted-8.1.0-py2.4-linux-i686.egg/twisted/python/threadpool.py", line 161, in _worker
    context.call(ctx, function, *args, **kwargs)
  File "/usr/lib/python2.4/site-packages/Twisted-8.1.0-py2.4-linux-i686.egg/twisted/python/context.py", line 59, in callWithContext
    return self.currentContext().callWithContext(ctx, func, *args, **kw)
  File "/usr/lib/python2.4/site-packages/Twisted-8.1.0-py2.4-linux-i686.egg/twisted/python/context.py", line 37, in callWithContext
    return func(*args,**kw)
--- <exception caught here> ---
  File "/usr/lib/python2.4/site-packages/Twisted-8.1.0-py2.4-linux-i686.egg/twisted/internet/threads.py", line 24, in _putResultInDeferred
    result = f(*args, **kwargs)
  File "/usr/local/nav/lib/python/nav/ipdevpoll/utils.py", line 143, in _commit_on_success
    result = func(*args, **kwargs)
  File "/usr/local/nav/lib/python/nav/ipdevpoll/utils.py", line 162, in _cleanup
    return func(*args, **kwargs)
  File "/usr/local/nav/lib/python/nav/ipdevpoll/jobs.py", line 269, in complete_save_cycle
    result = self.perform_save()
  File "/usr/local/nav/lib/python/nav/ipdevpoll/jobs.py", line 318, in perform_save
    obj_model = obj.convert_to_model(self.containers)
  File "/usr/local/nav/lib/python/nav/ipdevpoll/storage.py", line 239, in convert_to_model
    model = self.get_existing_model(containers)
  File "/usr/local/nav/lib/python/nav/ipdevpoll/shadows.py", line 302, in get_existing_model
    result = self.lookup_matching_objects(containers)
  File "/usr/local/nav/lib/python/nav/ipdevpoll/shadows.py", line 281, in lookup_matching_objects
    query = manage.Interface.objects.filter(netbox__id=self.netbox.id)
exceptions.AttributeError: 'NoneType' object has no attribute 'id'

[Morten Brekkevold (mbrekkevold)]

I sent a patch for macrom to test, but a similar thing happened (the reasoning is the same: Some plugin called upon the containers factory function and created a new Interface that the Interfaces plugin did not see. Probably some mumbo jumbo response from a MIB). The traceback after the first patch was:

2010-09-29 12:52:42,322 [ERROR] [nav.ipdevpoll.jobs.jobhandler.inventory.(switch.foo.tld)] The last query was: {'time': '0.020', 'sql': 'INSERT INTO "interface" ("netboxid", "moduleid", "ifindex", "ifname", "ifdescr", "iftype", "speed", "ifphysaddress", "ifadminstatus", "ifoperstatus", "iflastchange", "ifconnectorpresent", "ifpromiscuousmode", "ifalias", "baseport", "media", "vlan", "trunk", "duplex", "to_netboxid", "to_interfaceid", "gone_since") VALUES (513, NULL, NULL, E\'\', E\'\', NULL, NULL, NULL, NULL, NULL, NULL, false, false, E\'\', 21, NULL, NULL, false, NULL, NULL, NULL, NULL)'}
2010-09-29 12:52:55,616 [ERROR] [nav.ipdevpoll.jobs.jobhandler.inventory.(switch.foo.tld)] Save stage failed with unhandled error:
Traceback (most recent call last):
  File "/usr/lib/python2.4/threading.py", line 422, in run
    self.__target(*self.__args, **self.__kwargs)
  File "/usr/lib/python2.4/site-packages/Twisted-8.1.0-py2.4-linux-i686.egg/twisted/python/threadpool.py", line 161, in _worker
    context.call(ctx, function, *args, **kwargs)
  File "/usr/lib/python2.4/site-packages/Twisted-8.1.0-py2.4-linux-i686.egg/twisted/python/context.py", line 59, in callWithContext
    return self.currentContext().callWithContext(ctx, func, *args, **kw)
  File "/usr/lib/python2.4/site-packages/Twisted-8.1.0-py2.4-linux-i686.egg/twisted/python/context.py", line 37, in callWithContext
    return func(*args,**kw)
--- <exception caught here> ---
  File "/usr/lib/python2.4/site-packages/Twisted-8.1.0-py2.4-linux-i686.egg/twisted/internet/threads.py", line 24, in _putResultInDeferred
    result = f(*args, **kwargs)
  File "/usr/local/nav/lib/python/nav/ipdevpoll/utils.py", line 143, in _commit_on_success
    result = func(*args, **kwargs)
  File "/usr/local/nav/lib/python/nav/ipdevpoll/utils.py", line 162, in _cleanup
    return func(*args, **kwargs)
  File "/usr/local/nav/lib/python/nav/ipdevpoll/jobs.py", line 269, in complete_save_cycle
    result = self.perform_save()
  File "/usr/local/nav/lib/python/nav/ipdevpoll/jobs.py", line 331, in perform_save
    obj_model.save()
  File "/usr/lib/python2.4/site-packages/django/db/models/base.py", line 311, in save
    self.save_base(force_insert=force_insert, force_update=force_update)
  File "/usr/lib/python2.4/site-packages/django/db/models/base.py", line 383, in save_base
    result = manager._insert(values, return_id=update_pk)
  File "/usr/lib/python2.4/site-packages/django/db/models/manager.py", line 138, in _insert
    return insert_query(self.model, values, **kwargs)
  File "/usr/lib/python2.4/site-packages/django/db/models/query.py", line 894, in insert_query
    return query.execute_sql(return_id)
  File "/usr/lib/python2.4/site-packages/django/db/models/sql/subqueries.py", line 309, in execute_sql
    cursor = super(InsertQuery, self).execute_sql(None)
  File "/usr/lib/python2.4/site-packages/django/db/models/...

[Morten Brekkevold (mbrekkevold)]

fix here: http://metanav.uninett.no/hg/series/3.6.x/rev/a348483668b9