salt-netbox-roleproxy/roleproxy.py

#!/usr/bin/python3
"""
Copyright 2023, Georg Pfuetzenreuter

Licensed under the EUPL, Version 1.2 or - as soon they will be approved by the European Commission - subsequent versions of the EUPL (the "Licence").
You may not use this work except in compliance with the Licence.
An English copy of the License is shipped in a file called LICENSE along with this applications source code.
You may obtain copies of the Licence in any of the official languages at https://joinup.ec.europa.eu/collection/eupl/eupl-text-eupl-12.

---

This program serves a custom "salt_roles" field in NetBox via a HTTP API consumable in Salt top files.
"""

import flask
import logging
import os
import pynetbox
from waitress import serve

if not 'NB_HOST' in os.environ or not 'NB_TOKEN' in os.environ:
    print('Pass NB_HOST and NB_TOKEN as environment variables.')
    import sys
    sys.exit(1)

host = os.environ['NB_HOST']
token = os.environ['NB_TOKEN']

app = flask.Flask(__name__)

def connect(host, token):
    netbox = pynetbox.api(host, token)
    return(netbox)

def get_roles(netbox, name):
    vm = netbox.virtualization.virtual_machines.filter(name=name)
    vmroles = {}
    if len(vm) > 0:
        vmroles = vm[0].custom_fields['salt_roles']
        if vmroles is None:
            vmroles = {}
        return(200, vmroles)
    if len(vm) == 0:
        return(404, None)

@app.route('/roles')
def query():
    name = flask.request.args.get('machine')
    query = get_roles(connect(host, token), name)
    response = query[0]
    logger.info(' %s requested roles for %s and received %i', flask.request.remote_addr, name, response)
    if response == 404:
        flask.abort(404)
    elif response == 200:
        roledict = {'roles': query[1]}
    return(flask.jsonify(roledict))

if __name__ == '__main__':
    #app.run(debug=False)
    logger = logging.getLogger('roleproxy')
    logger.setLevel(logging.INFO)
    logger.info('Booting ...')
    serve(app, host='*', port=4580)