KeyError in services/plugin.py during the network association

During the network association, the following error is observed in the neutron screen
2016-07-04 10:47:49.207 TRACE neutron.api.v2.resource if router_id in bgpvpn['routers']]
2016-07-04 10:47:49.207 TRACE neutron.api.v2.resource KeyError: 'routers'

Setup : devstack(mitaka) + networking-bgpvpn(master) + opencontrail

The neutron CLI outputs are below

⌂119% 2d [cloud:~/devstack] stable/mitaka* 2s ± neutron bgpvpn-list
+--------------------------------------+---------+------+----------+
| id | name | type | networks |
+--------------------------------------+---------+------+----------+
| 7a4cabc9-e883-4397-a2c8-2fe12ba05c60 | demobgp | l3 | [] |
+--------------------------------------+---------+------+----------+
⌂133% 2d [cloud:~/devstack] stable/mitaka* 2s ±
2d [cloud:~/devstack] stable/mitaka* 2s 1 ± neutron net-list
+--------------------------------------+---------------------------------------------------------------+----------------------------------------------------------+
| id | name | subnets |
+--------------------------------------+---------------------------------------------------------------+----------------------------------------------------------+
| 254b9e9b-38f0-4038-838f-e766d04fe6ea | public | be21c5ea-3085-4415-a267-5fd5b082110c |
| | | eac36e08-2d32-43f1-85fb-bf10db5d328c |
| 69e768ea-74b7-4f7d-862a-8cfb3f8aa2b1 | snat-si- | f979e89f-074d-4cc5-b537-da3655457fb2 100.64.0.0/29 |
| | left_snat_20718216-8696-4da7-8667-8862cc3ec2dd_71cabe6c-4457 | |
| | -483b-ae9c-284c35f86602 | |
| 2fb165ec-12ce-447b-b2ab-6c31d0eb426a | private | adac69c0-fe89-4620-9e7a-ffe8f050a7f5 10.0.0.0/24 |
| | | e7d323c4-a6b4-458c-81e1-defff134508e fd9e:803e:d86c::/64 |
+--------------------------------------+---------------------------------------------------------------+----------------------------------------------------------+
2d [cloud:~/devstack] stable/mitaka* ±

2d [cloud:~/devstack] stable/mitaka* ± neutron bgpvpn-net-assoc-create demobgp --network 2fb165ec-12ce-447b-b2ab-6c31d0eb426a
Request Failed: internal server error while processing your request.
Neutron server returns request_ids: ['req-cf7722f1-5a26-4713-9aad-c4938db51592']

2d [cloud:~/devstack] stable/mitaka* ±
⌂94% 2d [cloud:~/devstack] stable/mitaka* ± neutron router-list
+--------------------------------------+---------+-----------------------------------------------------------------------------+
| id | name | external_gateway_info |
+--------------------------------------+---------+-----------------------------------------------------------------------------+
| 20718216-8696-4da7-8667-8862cc3ec2dd | router1 | {"network_id": "254b9e9b-38f0-4038-838f-e766d04fe6ea", "enable_snat": true} |
+--------------------------------------+---------+-----------------------------------------------------------------------------+

2d [cloud:~/devstack] stable/mitaka* ± neutron port-list
+--------------------------------------+-----------------------------------------------------+-------------------+------------------------------------------------------+
| id | name | mac_address | fixed_ips |
+--------------------------------------+-----------------------------------------------------+-------------------+------------------------------------------------------+
| 722d5215-fc0d-4901-b826-9c3c1394a8df | 722d5215-fc0d-4901-b826-9c3c1394a8df | 02:72:2d:52:15:fc | {"subnet_id": "adac69c0-fe89-4620-9e7a- |
| | | | ffe8f050a7f5", "ip_address": "10.0.0.1"} |
| bdb96d05-1d88-4ea8-a445-d01fe8d98140 | default-domain__demo__snat_20718216-8696-4da7-8667- | 02:4e:97:95:29:74 | {"subnet_id": |
| | 8862cc3ec2dd_71cabe6c-4457-483b-ae9c- | | "be21c5ea-3085-4415-a267-5fd5b082110c", |
| | 284c35f86602__1__right__1 | | "ip_address": "172.24.4.3"} |
| b6f4dfe4-fd7a-4e93-a185-064430b56453 | default-domain__demo__snat_20718216-8696-4da7-8667- | 02:07:48:b3:e7:e0 | {"subnet_id": "f979e89f-074d- |
| | 8862cc3ec2dd_71cabe6c-4457-483b-ae9c- | | 4cc5-b537-da3655457fb2", "ip_address": "100.64.0.4"} |
| | 284c35f86602__1__left__2 | | |
| f5a04682-f4f9-43f5-b8cc-17bd7d3925b9 | default-domain__demo__snat_20718216-8696-4da7-8667- | 02:4e:97:95:29:74 | {"subnet_id": |
| | 8862cc3ec2dd_71cabe6c-4457-483b-ae9c- | | "be21c5ea-3085-4415-a267-5fd5b082110c", |
| | 284c35f86602__2__right__1 | | "ip_address": "172.24.4.3"} |
| b0f715ea-b485-4af1-a486-3e599f1bc6eb | default-domain__demo__snat_20718216-8696-4da7-8667- | 02:07:48:b3:e7:e0 | {"subnet_id": "f979e89f-074d- |
| | 8862cc3ec2dd_71cabe6c-4457-483b-ae9c- | | 4cc5-b537-da3655457fb2", "ip_address": "100.64.0.4"} |
| | 284c35f86602__2__left__2 | | |
| d79e7d45-84f9-43a1-b185-292e3e547311 | d79e7d45-84f9-43a1-b185-292e3e547311 | 02:d7:9e:7d:45:84 | {"subnet_id": "e7d323c4-a6b4-458c- |
| | | | 81e1-defff134508e", "ip_address": |
| | | | "fd9e:803e:d86c::1"} |
| a0eb9ec7-9bf6-45eb-8ad3-6a590d48a59c | a0eb9ec7-9bf6-45eb-8ad3-6a590d48a59c | 02:a0:eb:9e:c7:9b | {"subnet_id": "e7d323c4-a6b4-458c- |
| | | | 81e1-defff134508e", "ip_address": |
| | | | "fd9e:803e:d86c::3"} |
| | | | {"subnet_id": "adac69c0-fe89-4620-9e7a- |
| | | | ffe8f050a7f5", "ip_address": "10.0.0.3"} |
+--------------------------------------+-----------------------------------------------------+-------------------+------------------------------------------------------+

Neutron(q-svc) Logs
======================

2016-07-04 10:47:49.206 DEBUG networking_bgpvpn.neutron.services.service_drivers.opencontrail.opencontrail_client [req-cf7722f1-5a26-4713-9aad-c4938db51592 demo 05f99c51
12ca45baa89ffaf26fab9335] RES:
HTTP 11.0 200 OK
Date: Mon, 04 Jul 2016 10:47:49 GMT
Content-Length: 1502
Content-Type: application/json

{"value": [{"value": "e7d323c4-a6b4-458c-81e1-defff134508e", "key": "2fb165ec-12ce-447b-b2ab-6c31d0eb426a fd9e:803e:d86c::/64"}, {"value": "69e768ea-74b7-4f7d-862a-8cfb3
f8aa2b1 100.64.0.0/29", "key": "f979e89f-074d-4cc5-b537-da3655457fb2"}, {"value": "eac36e08-2d32-43f1-85fb-bf10db5d328c", "key": "254b9e9b-38f0-4038-838f-e766d04fe6ea 20
01:db8::/64"}, {"value": "{\"bgpvpn\": {\"export_targets\": [\"64512:1000\"], \"name\": \"demobgp\", \"route_distinguishers\": [], \"tenant_id\": \"05f99c5112ca45baa89ff
af26fab9335\", \"import_targets\": [\"64512:2000\"], \"route_targets\": [\"64512:1000\"], \"type\": \"l3\", \"id\": \"7a4cabc9-e883-4397-a2c8-2fe12ba05c60\"}}", "key": "
7a4cabc9-e883-4397-a2c8-2fe12ba05c60"}, {"value": "2fb165ec-12ce-447b-b2ab-6c31d0eb426a 10.0.0.0/24", "key": "adac69c0-fe89-4620-9e7a-ffe8f050a7f5"}, {"value": "254b9e9b
-38f0-4038-838f-e766d04fe6ea 172.24.4.0/24", "key": "be21c5ea-3085-4415-a267-5fd5b082110c"}, {"value": "2fb165ec-12ce-447b-b2ab-6c31d0eb426a fd9e:803e:d86c::/64", "key":
 "e7d323c4-a6b4-458c-81e1-defff134508e"}, {"value": "adac69c0-fe89-4620-9e7a-ffe8f050a7f5", "key": "2fb165ec-12ce-447b-b2ab-6c31d0eb426a 10.0.0.0/24"}, {"value": "be21c5
ea-3085-4415-a267-5fd5b082110c", "key": "254b9e9b-38f0-4038-838f-e766d04fe6ea 172.24.4.0/24"}, {"value": "f979e89f-074d-4cc5-b537-da3655457fb2", "key": "69e768ea-74b7-4f
7d-862a-8cfb3f8aa2b1 100.64.0.0/29"}, {"value": "254b9e9b-38f0-4038-838f-e766d04fe6ea 2001:db8::/64", "key": "eac36e08-2d32-43f1-85fb-bf10db5d328c"}]}
 from (pid=6097) _log_res /opt/stack/networking-bgpvpn/networking_bgpvpn/neutron/services/service_drivers/opencontrail/opencontrail_client.py:215
2016-07-04 10:47:49.207 ERROR neutron.api.v2.resource [req-cf7722f1-5a26-4713-9aad-c4938db51592 demo 05f99c5112ca45baa89ffaf26fab9335] create failed
2016-07-04 10:47:49.207 TRACE neutron.api.v2.resource Traceback (most recent call last):
2016-07-04 10:47:49.207 TRACE neutron.api.v2.resource File "/opt/stack/neutron/neutron/api/v2/resource.py", line 84, in resource
2016-07-04 10:47:49.207 TRACE neutron.api.v2.resource result = method(request=request, **args)
2016-07-04 10:47:49.207 TRACE neutron.api.v2.resource File "/opt/stack/neutron/neutron/api/v2/base.py", line 410, in create
2016-07-04 10:47:49.207 TRACE neutron.api.v2.resource return self._create(request, body, **kwargs)
2016-07-04 10:47:49.207 TRACE neutron.api.v2.resource File "/usr/local/lib/python2.7/dist-packages/oslo_db/api.py", line 148, in wrapper
2016-07-04 10:47:49.207 TRACE neutron.api.v2.resource ectxt.value = e.inner_exc
2016-07-04 10:47:49.207 TRACE neutron.api.v2.resource File "/usr/local/lib/python2.7/dist-packages/oslo_utils/excutils.py", line 220, in __exit__
2016-07-04 10:47:49.207 TRACE neutron.api.v2.resource self.force_reraise()
2016-07-04 10:47:49.207 TRACE neutron.api.v2.resource File "/usr/local/lib/python2.7/dist-packages/oslo_utils/excutils.py", line 196, in force_reraise
2016-07-04 10:47:49.207 TRACE neutron.api.v2.resource six.reraise(self.type_, self.value, self.tb)
2016-07-04 10:47:49.207 TRACE neutron.api.v2.resource File "/usr/local/lib/python2.7/dist-packages/oslo_db/api.py", line 138, in wrapper
2016-07-04 10:47:49.207 TRACE neutron.api.v2.resource return f(*args, **kwargs)
2016-07-04 10:47:49.207 TRACE neutron.api.v2.resource File "/opt/stack/neutron/neutron/api/v2/base.py", line 521, in _create
2016-07-04 10:47:49.207 TRACE neutron.api.v2.resource obj = do_create(body)
2016-07-04 10:47:49.207 TRACE neutron.api.v2.resource File "/opt/stack/neutron/neutron/api/v2/base.py", line 503, in do_create
2016-07-04 10:47:49.207 TRACE neutron.api.v2.resource request.context, reservation.reservation_id)
2016-07-04 10:47:49.207 TRACE neutron.api.v2.resource File "/usr/local/lib/python2.7/dist-packages/oslo_utils/excutils.py", line 220, in __exit__
2016-07-04 10:47:49.207 TRACE neutron.api.v2.resource self.force_reraise()
2016-07-04 10:47:49.207 TRACE neutron.api.v2.resource File "/usr/local/lib/python2.7/dist-packages/oslo_utils/excutils.py", line 196, in force_reraise
2016-07-04 10:47:49.207 TRACE neutron.api.v2.resource six.reraise(self.type_, self.value, self.tb)
2016-07-04 10:47:49.207 TRACE neutron.api.v2.resource File "/opt/stack/neutron/neutron/api/v2/base.py", line 496, in do_create
2016-07-04 10:47:49.207 TRACE neutron.api.v2.resource return obj_creator(request.context, **kwargs)
2016-07-04 10:47:49.207 TRACE neutron.api.v2.resource File "/opt/stack/networking-bgpvpn/networking_bgpvpn/neutron/services/plugin.py", line 147, in create_bgpvpn_network_association
2016-07-04 10:47:49.207 TRACE neutron.api.v2.resource net = self._validate_network(context, net_assoc)
2016-07-04 10:47:49.207 TRACE neutron.api.v2.resource File "/opt/stack/networking-bgpvpn/networking_bgpvpn/neutron/services/plugin.py", line 68, in _validate_network
2016-07-04 10:47:49.207 TRACE neutron.api.v2.resource self._validate_network_has_router_assoc(context, network, plugin)
2016-07-04 10:47:49.207 TRACE neutron.api.v2.resource File "/opt/stack/networking-bgpvpn/networking_bgpvpn/neutron/services/plugin.py", line 80, in _validate_network_has_router_assoc
2016-07-04 10:47:49.207 TRACE neutron.api.v2.resource if router_id in bgpvpn['routers']]
2016-07-04 10:47:49.207 TRACE neutron.api.v2.resource KeyError: 'routers'
2016-07-04 10:47:49.207 TRACE neutron.api.v2.resource
2016-07-04 10:47:49.218 INFO neutron.wsgi [req-cf7722f1-5a26-4713-9aad-c4938db51592 demo 05f99c5112ca45baa89ffaf26fab9335] 192.168.122.96 - - [04/Jul/2016 10:47:49] "POST /v2.0/bgpvpn/bgpvpns/7a4cabc9-e883-4397-a2c8-2fe12ba05c60/network_associations.json HTTP/1.1" 500 383 0.119445