NoReverseMatch exception when trying to load netmap

[Christian Strand Young]

NAV 4.0.1

Clicking netmap from the tools menu -> Netmap starts loading -> Error in javascript alert: "Error loading graph, please try to reload the page"

My javascript console shows the follwing:
GET https://<snip>/netmap/api/graph/layer2/3 500 (INTERNAL SERVER ERROR)

When looking at this 500 error, it gives this traceback:

NoReverseMatch: Reverse for 'ipdevinfo-interface-details-by-name' with arguments '()' and keyword arguments '{'port_name': u'', 'netbox_sysname': u'teknobyen-3etg-sw1.uninett.no'}' not found.
Traceback (most recent call last):
File "/usr/lib/python2.7/dist-packages/django/core/handlers/base.py", line 111, in get_response response = callback(request, *callback_args, **callback_kwargs)
File "/usr/lib/python2.7/dist-packages/nav/web/netmap/views.py", line 518, in api_graph_layer_2 json = _json_layer2(load_traffic, view)
File "/usr/lib/python2.7/dist-packages/nav/web/netmap/views.py", line 559, in _json_layer2 node_a, node_b, nx_metadata in graph.edges_iter(data=True)]
File "/usr/lib/python2.7/dist-packages/nav/netmap/metadata.py", line 375, in edge_to_json_layer2 metadata_for_edges.append(edge.to_json())
File "/usr/lib/python2.7/dist-packages/nav/netmap/metadata.py", line 309, in to_json 'source': self.source.to_json() or 'null',
File "/usr/lib/python2.7/dist-packages/nav/netmap/metadata.py", line 147, in to_json self.interface.ifname)})
File "/usr/lib/python2.7/dist-packages/django/core/urlresolvers.py", line 476, in reverse return iri_to_uri(resolver._reverse_with_prefix(view, prefix, *args, **kwargs))
File "/usr/lib/python2.7/dist-packages/django/core/urlresolvers.py", line 396, in _reverse_with_prefix "arguments '%s' not found." % (lookup_view_s, args, kwargs))
NoReverseMatch: Reverse for 'ipdevinfo-interface-details-by-name' with arguments '()' and keyword arguments '{'port_name': u'', 'netbox_sysname': u'teknobyen-3etg-sw1.uninett.no'}' not found.

[John Reames (jwreames)]

This also happens on the Wheezy package for NAV 4.1.0 as found at:
https://nav.uninett.no/debian/pool/wheezy/nav/nav/nav_4.1.0-1_all.deb

[Tue Jul 08 15:54:09 2014] [error] [Tue Jul 08 15:54:09 2014] [INFO] [pid=20402
nav.web.tools] admin successfully logged in
[Tue Jul 08 15:54:15 2014] [error] [Tue Jul 08 15:54:15 2014] [ERROR] [pid=20402
 django.request] Internal Server Error: /netmap/api/graph/layer2
[Tue Jul 08 15:54:15 2014] [error] Traceback (most recent call last):
[Tue Jul 08 15:54:15 2014] [error] File "/usr/lib/python2.7/dist-packages/djan
go/core/handlers/base.py", line 109, in get_response
[Tue Jul 08 15:54:15 2014] [error] response = callback(request, *callback_ar
gs, **callback_kwargs)
[Tue Jul 08 15:54:15 2014] [error] File "/usr/lib/python2.7/dist-packages/nav/
web/netmap/views.py", line 529, in api_graph_layer_2
[Tue Jul 08 15:54:15 2014] [error] json = _json_layer2(load_traffic)
[Tue Jul 08 15:54:15 2014] [error] File "/usr/lib/python2.7/dist-packages/nav/
web/netmap/views.py", line 559, in _json_layer2
[Tue Jul 08 15:54:15 2014] [error] node_a, node_b, nx_metadata in graph.edge
s_iter(data=True)]
[Tue Jul 08 15:54:15 2014] [error] File "/usr/lib/python2.7/dist-packages/nav/
netmap/metadata.py", line 375, in edge_to_json_layer2
[Tue Jul 08 15:54:15 2014] [error] metadata_for_edges.append(edge.to_json())
[Tue Jul 08 15:54:15 2014] [error] File "/usr/lib/python2.7/dist-packages/nav/
netmap/metadata.py", line 310, in to_json
[Tue Jul 08 15:54:15 2014] [error] 'target': self.target.to_json() or 'null'
,
[Tue Jul 08 15:54:15 2014] [error] File "/usr/lib/python2.7/dist-packages/nav/
netmap/metadata.py", line 147, in to_json
[Tue Jul 08 15:54:15 2014] [error] self.interface.ifname)})
[Tue Jul 08 15:54:15 2014] [error] File "/usr/lib/python2.7/dist-packages/djan
go/core/urlresolvers.py", line 500, in reverse
[Tue Jul 08 15:54:15 2014] [error] return iri_to_uri(resolver._reverse_with_
prefix(view, prefix, *args, **kwargs))
[Tue Jul 08 15:54:15 2014] [error] File "/usr/lib/python2.7/dist-packages/djan
go/core/urlresolvers.py", line 420, in _reverse_with_prefix
[Tue Jul 08 15:54:15 2014] [error] "arguments '%s' not found." % (lookup_vie
w_s, args, kwargs))
[Tue Jul 08 15:54:15 2014] [error] NoReverseMatch: Reverse for 'ipdevinfo-interf
ace-details-by-name' with arguments '()' and keyword arguments '{'port_name': u'
', 'netbox_sysname': u'example-switch.private.domain'}' not found.

[Morten Brekkevold (mbrekkevold)]

This happens because the Netmap doesn't expect nameless interfaces. Nameless interfaces should not exist, but are still being registered by ipdevpoll under some unknown circumstances.

We already have a patch for this problem, I will commit it for 4.1.1.

[Morten Brekkevold (mbrekkevold)]

fix here: https://nav.uninett.no/hg/stable/rev/20876026957e

[John Reames (jwreames)]

Applied patch; problem resolved