umnet-pyncs 0.1.4

custom python module for NCS helpers

Overview

This module is intended to be installed on the production NCS nodes and imported in other services/actions that need to gather state from the network. It uses the NCS device manager and the standard python multiprocessing library to connect to devices in-parallel and issue commands, returning results as structured data.

Usage information

Basic usage example in an NCS callback:

from umnet_ncs.state import StateManager
...


class DemoAction(Action):
    @Action.action
    def cb_action(self, uinfo, name, kp, input, output, trans):
        ...
        with StateManager() as m:
            interfaces = m.get_state(al_devices, ["get-interface-details"])
            arp = m.get_state(dl_devices, ["get-arp-table"])
            ...

Supported commands

We attempt to normalize the output of each command based on how it is implemented. For example, we might default to just directly returning the data as-parsed by the ntc_templates module, or try and emulate for e.g. junos devices where we might have direct access to NETCONF RPCs via the NCS device manager.

Currently supported commands are:

• get-mac-table
• get-arp-table
• get-interface-details
• get-transciever-details

TODO

The models are mostly taken verbatim from the netsplash NCS package, and additional methods were added on top to support the stats.py module.