Hello.
I'm trying to implement this solution to be able to describe YANG models in YAML and build appropriate models using YDK modules.
But I'm kind of stuck. Here is what I'm testing right now:
from ydk.services import CRUDService, CodecService
from ydk.providers import NetconfServiceProvider, CodecServiceProvider
from ydk.types import Empty
from ydk.models.cisco_ios_xe.Cisco_IOS_XE_native import Native
from ydk.filters import YFilter
import yaml
import logging
logger = logging.getLogger('ydk')
logger.setLevel(logging.INFO)
handler = logging.StreamHandler()
formatter = logging.Formatter(("%(asctime)s - %(name)s - "
"%(levelname)s - %(message)s"))
handler.setFormatter(formatter)
logger.addHandler(handler)
def instantiate(binding, model_key, model_value, action='assign'):
if isinstance(model_value, str) and model_value.lower() == 'empty':
if action == 'return':
return Empty()
elif action == 'assign':
setattr(binding, model_key, Empty())
elif any(isinstance(model_value, x) for x in [str, bool, int]):
if action == 'return':
return model_value
elif action == 'assign':
setattr(binding, model_key, model_value)
elif isinstance(model_value, list):
list_obj = getattr(binding, model_key.lower())
for el in model_value:
list_obj.append(instantiate(binding, model_key, el, action='return'))
elif isinstance(model_value, dict):
# special case handling enum type
if all([x is None for x in model_value.values()]):
enum_name = ''.join([x.capitalize() for x in model_key.split('_')]) + 'Enum'
enum_class = getattr(binding, enum_name)
for el in model_value.keys():
enum = getattr(enum_class, el)
if action == 'return':
return enum
elif action == 'assign':
setattr(binding, model_key, enum)
else:
container = getattr(binding, model_key, None)
if container and not isinstance(container, list):
container_instance = container
elif container.__class__.__name__ == 'YLeafList':
container_instance = container
else:
model_key_camelized = ''.join([x.capitalize() for x in model_key.split('_')])
container_instance = getattr(binding, model_key_camelized)()
for k, v in model_value.items():
instantiate(container_instance, k, v, action='assign')
if action == 'return':
return container_instance
elif action == 'assign':
setattr(binding, model_key, container_instance)
else:
raise ValueError('Unexpected YAML value: {} of type {}'.format(model_value, type(model_value)))
if __name__ == '__main__':
with open('interfaces2.yml') as f:
config = yaml.load(f)['config']
for model_name, model_data in config.items():
for k, v in model_data.items():
binding = globals().get(model_name.capitalize())()
instantiate(binding, k, v)
# codec = CodecService()
# provider = CodecServiceProvider(type='xml')
# print(codec.encode(provider, native))
provider = NetconfServiceProvider(
address='10.10.30.6',
port=830,
username='admin',
password='admin',
protocol='ssh'
)
crud = CRUDService()
crud.create(provider, binding)And config file is:
config:
native:
interface:
gigabitethernet:
- name: "2"
description: Configured via ydk
ip:
address:
primary:
address: 172.16.2.0
mask: 255.255.255.254
secondary:
- address: 192.168.20.1
mask: 255.255.255.254
secondary:
- address: 192.168.20.3
mask: 255.255.255.254
secondary:
- name: "3"
description: Configured via ydk
ip:
address:
primary:
address: 172.16.3.0
mask: 255.255.255.254
- name: "4"
description: Configured via ydk
ip:
address:
primary:
address: 172.16.4.0
mask: 255.255.255.254
loopback:
- name: 0
description: ROUTER ID
ip:
address:
primary:
address: 1.1.1.6
mask: 255.255.255.255
The problem is that Interface class has camel case namings for classes of particular interface type, GigabitEthernet for instance. This is why I've got:
python3 xe_intf_test2.py
Traceback (most recent call last):
File "xe_intf_test2.py", line 75, in <module>
instantiate(binding, k, v)
File "xe_intf_test2.py", line 58, in instantiate
instantiate(container_instance, k, v, action='assign')
File "xe_intf_test2.py", line 33, in instantiate
list_obj.append(instantiate(binding, model_key, el, action='return'))
File "xe_intf_test2.py", line 55, in instantiate
container_instance = getattr(binding, model_key_camelized)()
AttributeError: 'Interface' object has no attribute 'Gigabitethernet'Do you have any idea or even implementation of this?
