First of all, I went through the post Python DataCallback daemon but my case is more complicated than this.
I have a yang module defined as
module pydp {
namespace "http://tail-f.com/ns/example/pydp";
prefix pydp; yang-version 1.1;
import tailf-common {prefix tailf;}
import ietf-inet-types {prefix inet;}
list cont {
key name;
leaf name {
type string;
}
container brief {
tailf:callpoint mydp-cp;
config false;
leaf status {
type string;
}
leaf up-time {
type string;
}
list device {
key device-name;
leaf device-name {
type string;
}
leaf mac {
type string;
description "MAC address of the device";
}
}
leaf-list ds-name{
type string;
}
leaf-list us-name {
type string;
}
}
}
Python:
import ncs
import _ncs
from ncs.experimental import DataCallbacks
def dcb_start(state):
dcb = DataCallbacks(state.log)
dcb.register('/mydp:container', Handler())
_ncs.dp.register_data_cb(state.ctx, 'mydp-cp', dcb)
return state
def dcb_stop(start_state):
pass
class Handler(object):
def get_object(self, tctx, kp, args):
cont_name = args.get("cont")
with ncs.maapi.single_read_trans(tctx.uinfo.username, "passwd") as t:
root = ncs.maagic.get_root(t)
key = root.cont[device_name]
....
return {
"brief": {
'status': 'value',
'up-time': 'value',
'device': {'device-name': 'test', 'mac': 'value'},
'ds-name": ['name11', 'name12'],
'us-name": ['name21', 'name22'], }
def get_next(self, tctx, kp, args, next):
return None
def count(self):
return 0
class Main(ncs.application.Application):
def setup(self):
...
self.register_fun(dcb_start, dcb_stop)
def teardown(self):
pass
I noticed that get_object() was invoked multiple times, guess it's because list/leaflist are supposed to be processed separately. If that's the case how can I get the hash tag from kp? I don't see class HKeyPathRef provides a method to get the hash tag. The NSO Python API is poorly documented and I couldn't find any example of using python Dp callback to implement oper commands callback. Any help will be appreciated.
Because the config/action callbacks were implemented in python, we'd like to use Python for oper callback as well.
