Determine if a port is in use on ACI

port-in-use.py

#!/usr/bin/env python

"""
Find out where a DN is used
"""
from acitoolkit import Credentials, Session
from tabulate import tabulate

data = []


def main():
    """
    Main execution routine
    """
    description = ('Simple application that logs on to the APIC'
                   ' and displays usage information for a given DN')
    creds = Credentials('apic', description)
    creds.add_argument("-port", "--port",
                       help="port in node/mod/port format e.g 101/1/1")

    args = creds.get()
    node, mod, port = args.port.split('/')

    session = Session(args.url, args.login, args.password)
    resp = session.login()
    if not resp.ok:
        print('%% Could not login to APIC')
    url = "/api/node/mo/topology/pod-1/node-{}/sys/phys-[eth{}/{}].json"
    url = url.format(node, mod, port)
    query_options = "?rsp-subtree-include=full-deployment" \
                    "&target-node=all" \
                    "&target-path=l1EthIfToEPg"
    url = url + query_options

    resp = session.get(url)
    if resp.ok:
        port = resp.json()['imdata'][0]['l1PhysIf']

        children = port.get('children')
        if not children:
            print("All clear!")
            exit()


        for item in children:
            try:
                epg = item['pconsCtrlrDeployCtx']['children'][0]['pconsResourceCtx']['attributes']['ctxDn']
                data.append([epg])
            except:
                print("rur roh")
                exit()

    print(tabulate(data, headers=["Used by", "Class"]))


if __name__ == '__main__':
    main()