Issue Create Route policy for NCS5500 V7. XR netconf via Python in NSO

[gkhaled]

Hello,

is there any one had the problem when try to create anew route policy for the NCS5500 XR netconf via Python in NSO?

i try to put some logic in python till can can create new route policy as like below example :

route-policy EBGP_PE1_IN 

  if extcommunity rt matches-any (65535:400400) then              

    set extcommunity rt (65102:104104) additive          

    set community (1:1) additive                     

    set local-preference 300                            

    pass                                 

  elseif extcommunity rt matches-any (65535:400200) then

    set extcommunity rt (65102:102003) additive

    set extcommunity rt (65102:102004) additive

    set community (1:1) additive

    pass

  endif

  pass

end-policy

but the problem that when try to deploy the package , it seems created on NSO but without devices and no configuration deployed on the device .

so is there any one know why the package does not deploy on the devices ?

[Nabsch]

Hello,

Can you put your python code ? You can enable trace on the device that might help you to find the root cause.

[gkhaled]

here are my python code 

def cb_create(self, tctx, root, service, proplist):
self.log.info('Service create(service=', service._path, ')')
self.log.info(service.device)
# starting with empty value
val = ''
# looping the list of extcommunity
#for comm in service.device:

DEVs = []
for DEV in service.device:

DEVs.append(DEV.dev)
self.log.info(DEVs)
for rpl in DEV.route_policies:
for comm in rpl.extcommunity:
self.log.info("{} {} {} ".format(type(service.device),len(service.device),comm))

val += f"""route-policy {rpl.route_policy_name}
if extcommunity rt matches-any ({comm.rt_match_as}:{comm.rt_match_id1}) then
set extcommunity rt ({comm.bgp_rt_set_local_as}:{comm.bgp_rt_set_id1}) additive
set community ({comm.bgp_community_as}:{comm.bgp_community_id}) additive
set local-preference {comm.bgp_local_preference}
pass
elseif extcommunity rt matches-any ({comm.rt_match_as}:{comm.rt_match_id2}) then
set extcommunity rt ({comm.bgp_rt_set_local_as}:{comm.rt_set_id2}) additive
set extcommunity rt ({comm.bgp_rt_set_local_as}:{comm.rt_set_id3}) additive
set community ({comm.bgp_community_as}:{comm.bgp_community_id}) additive
pass
endif
pass
end-policy\n"""
self.log.info(val)

with ncs.maapi.Maapi() as m:
with ncs.maapi.Session(m, 'admin', 'python'):
with ncs.maapi.single_write_trans('admin', 'python', groups=['ncsadmin']) as t:
root = ncs.maagic.get_root(t)
for dev in DEVs:
self.log.info(dev)
device_list = root.devices.device[dev]
self.log.info("Device to read : " + device_list.name)
RPL = device_list.config.Cisco_IOS_XR_policy_repository_cfg__routing_policy.route_policies.route_policy
RPL_create = RPL.create(rpl.route_policy_name).rpl_route_policy
self.log.info("create new RPL : " + rpl.route_policy_name)

vars = ncs.template.Variables()
vars.add('VAL', val)
template = ncs.template.Template(service)
template.apply('route_policy_config-template', vars)
self.log.info("deploy service ")

[Nabsch]

Can you reformat your code ?

[gkhaled]

How i can do that ?

[Nabsch]

You have  to click on insert code 

Concerning your code , you made some mistake. You create the RPL but you in a transaction that you had never apply ( commit) so the RPL is not created. If you try to add t.apply() it will fails because you are inside cb_create so you already acquire cdb lock.

I suggest you to create your RPL with a template and you apply your template inside your loop so you can create all the RPL that you want instead of doing 

    with ncs.maapi.Maapi() as m:
    with ncs.maapi.Session(m, 'admin', 'python'):
    with ncs.maapi.single_write_trans('admin', 'python', groups=['ncsadmin']) as t:
    root = ncs.maagic.get_root(t)
    for dev in DEVs:
    self.log.info(dev)
    device_list = root.devices.device[dev]
    self.log.info("Device to read : " + device_list.name)
    RPL = device_list.config.Cisco_IOS_XR_policy_repository_cfg__routing_policy.route_policies.route_policy
    RPL_create = RPL.create(rpl.route_policy_name).rpl_route_policy
    self.log.info("create new RPL : " + rpl.route_policy_name)

It would be something like this 

vars = ncs.template.Variables()
template = ncs.template.Template(service)    
for dev in DEVs:
    self.log.info(dev)
    vars.add("DEVICE",dev)
    vars.add("RPL",rpl.route_policy_name)
    self.log.info("create new RPL : " + rpl.route_policy_name)

[gkhaled]

Hello 

it is worked fine now after that change , many thanks

[Nabsch · Accepted solution]

Hello ,

Since it’s working .Can you mark it as solved ?