Etcd storehouse backend not working

[italovalcy]

Hi,

I'm trying to use the the Etcd storehouse backend by the following steps:

1. Use the Kytos/nightly docker image

2. After start the container:

apt-get update && apt-get install etcd-server etcd-client && service etcd start

sed -i 's/BACKEND = "filesystem"/BACKEND = "etcd"/g' /var/lib/kytos/napps/kytos/storehouse/settings.py

kytosd -E

Just after starting Kytos we have some errors on the log:

Nov 12 21:11:55 d7cc32bbe40d kytos.napps.kytos/storehouse:ERROR main:182:  Bad callback function <bound method StoreHouse._get_or_create_a_box_from_list_of_boxes of <napps.kytos.mef_eline.storehouse.StoreHouse object at 0x7faeac31c5c0>>!
Nov 12 21:11:55 d7cc32bbe40d kytos.napps.kytos/storehouse:ERROR main:182:  Bad callback function <bound method Main.request_retrieve_entities of <Main(topology, stopped 140387805136640)>>!
Nov 12 21:11:55 d7cc32bbe40d kytos.napps.kytos/storehouse:ERROR main:183:  'generator' object is not subscriptable
Nov 12 21:11:55 d7cc32bbe40d kytos.napps.kytos/storehouse:ERROR main:183:  'generator' object is not subscriptable
Nov 12 21:11:55 d7cc32bbe40d kytos.napps.kytos/storehouse:ERROR main:182:  Bad callback function <bound method Main.request_retrieve_entities of <Main(topology, stopped 140387805136640)>>!
Nov 12 21:11:55 d7cc32bbe40d kytos.napps.kytos/storehouse:ERROR main:183:  'generator' object is not subscriptable
Nov 12 21:11:55 d7cc32bbe40d kytos.napps.kytos/storehouse:ERROR main:182:  Bad callback function <bound method Main.request_retrieve_entities of <Main(topology, stopped 140387805136640)>>!
Nov 12 21:11:55 d7cc32bbe40d kytos.napps.kytos/storehouse:ERROR main:182:  Bad callback function <bound method StoreHouse._get_or_create_a_box_from_list_of_boxes of <napps.kytos.topology.storehouse.StoreHouse object at 0x7faeb1d62208>>!
Nov 12 21:11:55 d7cc32bbe40d kytos.napps.kytos/storehouse:ERROR main:183:  'generator' object is not subscriptable
Nov 12 21:11:55 d7cc32bbe40d kytos.napps.kytos/storehouse:ERROR main:183:  'generator' object is not subscriptable

If you ignore those erros and go ahead to actually use Kytos ("use Kytos" here means create an EVC in mef_eline napp, but I suppose this will happens for any other usage):

prompt$ curl -s -X POST -d '{"name": "my evc3 100","enabled": true,"dynamic_backup_path":true, "uni_a": { "interface_id": "00:00:00:00:00:00:00:01:1", "tag": {"tag_type":1, "value": 200} }, "uni_z": {"interface_id": "00:00:00:00:00:00:00:02:1", "tag": {"tag_type":1, "value": 200}}}' http://$KYTOS_IP:8181/api/kytos/mef_eline/v2/evc/ -H "Content-Type: application/json"

{"code":500,"description":"The server encountered an internal error and was unable to complete your request. Either the server is overloaded or there is an error in the application.","name":"Internal Server Error"}

In the server logs:

Nov 12 21:13:35 d7cc32bbe40d kytos.core.controller:ERROR app:1892:  Exception on /api/kytos/mef_eline/v2/evc/ [POST]
Nov 12 21:13:35 d7cc32bbe40d Traceback (most recent call last):
Nov 12 21:13:35 d7cc32bbe40d File "/usr/local/lib/python3.6/dist-packages/flask/app.py", line 2447, in wsgi_app
Nov 12 21:13:35 d7cc32bbe40d response = self.full_dispatch_request()
Nov 12 21:13:35 d7cc32bbe40d File "/usr/local/lib/python3.6/dist-packages/flask/app.py", line 1952, in full_dispatch_request
Nov 12 21:13:35 d7cc32bbe40d rv = self.handle_user_exception(e)
Nov 12 21:13:35 d7cc32bbe40d File "/usr/local/lib/python3.6/dist-packages/flask_cors/extension.py", line 161, in wrapped_function
Nov 12 21:13:35 d7cc32bbe40d return cors_after_request(app.make_response(f(*args, **kwargs)))
Nov 12 21:13:35 d7cc32bbe40d File "/usr/local/lib/python3.6/dist-packages/flask/app.py", line 1821, in handle_user_exception
Nov 12 21:13:35 d7cc32bbe40d reraise(exc_type, exc_value, tb)
Nov 12 21:13:35 d7cc32bbe40d File "/usr/local/lib/python3.6/dist-packages/flask/_compat.py", line 39, in reraise
Nov 12 21:13:35 d7cc32bbe40d raise value
Nov 12 21:13:35 d7cc32bbe40d File "/usr/local/lib/python3.6/dist-packages/flask/app.py", line 1950, in full_dispatch_request
Nov 12 21:13:35 d7cc32bbe40d rv = self.dispatch_request()
Nov 12 21:13:35 d7cc32bbe40d File "/usr/local/lib/python3.6/dist-packages/flask/app.py", line 1936, in dispatch_request
Nov 12 21:13:35 d7cc32bbe40d return self.view_functions[rule.endpoint](**req.view_args)
Nov 12 21:13:35 d7cc32bbe40d File "//var/lib/kytos/napps/kytos/mef_eline/main.py", line 148, in create_circuit
Nov 12 21:13:35 d7cc32bbe40d self.storehouse.save_evc(evc)
Nov 12 21:13:35 d7cc32bbe40d File "//var/lib/kytos/napps/../napps/kytos/mef_eline/storehouse.py", line 89, in save_evc
Nov 12 21:13:35 d7cc32bbe40d self.box.data[evc.id] = evc.as_dict()
Nov 12 21:13:35 d7cc32bbe40d AttributeError: 'NoneType' object has no attribute 'data'
Nov 12 21:13:35 d7cc32bbe40d kytos.napps.kytos/storehouse:ERROR main:182:  Bad callback function <bound method StoreHouse._get_or_create_a_box_from_list_of_boxes of <napps.kytos.mef_eline.storehouse.StoreHouse object at 0x7faeac31c5c0>>!
Nov 12 21:13:35 d7cc32bbe40d kytos.napps.kytos/storehouse:ERROR main:183:  'generator' object is not subscriptable
Nov 12 21:13:35 d7cc32bbe40d kytos.napps.kytos/storehouse:ERROR main:182:  Bad callback function <bound method StoreHouse._get_or_create_a_box_from_list_of_boxes of <napps.kytos.mef_eline.storehouse.StoreHouse object at 0x7faeac31c5c0>>!
Nov 12 21:13:35 d7cc32bbe40d kytos.napps.kytos/storehouse:ERROR main:183:  'generator' object is not subscriptable

I guess the problem starts since this error at the beginning:

kytos.napps.kytos/storehouse:ERROR main:182:  Bad callback function <bound method StoreHouse._get_or_create_a_box_from_list_of_boxes of <napps.kytos.mef_eline.storehouse.StoreHouse object at 0x7faeac31c5c0>