Hi,
I am trying to understand the leafref statement in YANG and how it is realized in YDK-gen.
I am using Cisco IOS XR 632 openconfig-interfaces.yang and try to create an interface configuration like this:
def config_openconfig_interfaces_ipv4(self,
enabled="false",
interface_name="GigabitEthernet0/0/0/0",
ipv4_address="10.0.0.1",
ipv4_prefix_length=24):
oc_interfaces = importlib.import_module("ydk.models.openconfig.openconfig_interfaces")
interfaces = oc_interfaces.Interfaces()
interface = interfaces.Interface()
interface.config.enabled = enabled
interface.config.name = interface_name #<== interface.name should have the same value as interface.config.name
interface.ethernet.config.auto_negotiate="false"
(...more)
return self.codec.encode(self.provider, interfaces)
In the openconfig-interfaces.yang, the openconfig-interfaces:interfaces/interface/name is a "leafref" referring to openconfig-interfaces:interfaces/interface/config/name (bolded line). If I understand correctly, because "leafref" was used in the YANG model, the openconfig-interfaces:interfaces/interface/name will take whatever value the openconfig-interfaces:interfaces/interface/config/name has. However, the above code doesn't pass the value of openconfig-interfaces:interfaces/interface/config/name to openconfig-interfaces:interfaces/interface/name. So the returned config data looks like:
{
"openconfig-interfaces:interfaces": {
"interface": [
{
"name": "None",
"config": {
"name": "GigabitEthernet0/0/0/0",
"enabled": false
},
"openconfig-if-ethernet:ethernet": {
"config": {
"auto-negotiate": false
}
}
}
]
}
}
As we see here, the openconfig-interfaces:interfaces/interface/name got a "None" value instead of "GigabitEthernet0/0/0/0".
Is this an expected behavior in YDK-gen? or am I missing something to make the leafref statement works (as I expected, maybe this YANG leafref is enforced on the device but not in YDK-gen?)?
Thanks,
Binh
