one-inv

#!/usr/bin/env python

# -*- coding: utf-8 -*-
# -------------------------------------------------------------------------- #
# Copyright 2020, FeldHost™ (feldhost.net)                                   #
#                                                                            #
# Licensed under the Apache License, Version 2.0 (the "License"); you may    #
# not use this file except in compliance with the License. You may obtain    #
# a copy of the License at                                                   #
#                                                                            #
# http://www.apache.org/licenses/LICENSE-2.0                                 #
#                                                                            #
# Unless required by applicable law or agreed to in writing, software        #
# distributed under the License is distributed on an "AS IS" BASIS,          #
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.   #
# See the License for the specific language governing permissions and        #
# limitations under the License.                                             #
# -------------------------------------------------------------------------- #

import sys
import argparse
import json
import pyone
import functions
import config

# ----------------------------
# Define parser
# ----------------------------
parser = argparse.ArgumentParser(description='OpenNebula Ansible Dynamic Inventory')

parser.add_argument('--list', help='Get list of all groups', action='store_true')
parser.add_argument('--host', help='Get specific host vars')

# -------------------------------------
# Print help if no args passed
# -------------------------------------
if len(sys.argv[1:]) == 0:
    parser.print_help()
    parser.exit()

# -------------------------------------
# Parse args and proceed with execution
# -------------------------------------
args = parser.parse_args()

# -----------------------
# Connect to OpenNebula
# -----------------------
one = pyone.OneServer(config.ONE['address'], session='%s:%s' % (config.ONE['username'], config.ONE['password']))

# Init vars
groups = {}
groups['All'] = []
hosts = {}

# get hosts (VMs)
vm_pool = one.vmpool.infoextended(-2, -1, -1, 3)

# iterate over hosts
for vm in vm_pool.VM:
    labels = []
    if vm.USER_TEMPLATE.get('LABELS'):
        labels = vm.USER_TEMPLATE.get('LABELS').split(',')

    # get hostname
    hostname = functions.get_hostname(vm)

    for label in labels:
        # skips hosts by excluded labels
        if label in config.SKIP_LABELS:
            continue

        # create new group if doesn't exist
        if not groups.get(label):
            groups[label] = []

        # add host to group
        groups[label].append(hostname)

    # add host to default group
    groups['All'].append(hostname)

    # save host vars
    hosts[hostname] = vm.USER_TEMPLATE

    # custom ssh port
    ssh_port = functions.get_ssh_port(vm)
    if ssh_port:
        hosts[hostname]['ansible_port'] = ssh_port

# prepare final groups data
groups['_meta'] = {}
groups['_meta']['hostvars'] = hosts

if args.list:
    print(json.dumps(groups, sort_keys=False, indent=4, separators=(',', ': ')))

if args.host:
    if not args.host in hosts:
        print('Host with name %s does\'t exists!' % args.host)
        exit(1)

    print(json.dumps(hosts[args.host], sort_keys=False, indent=4, separators=(',', ': ')))