ansible/contrib/inventory/mdt_dynamic_inventory.py

135 lines
4.4 KiB
Python
Executable file

#!/usr/bin/env python
# (c) 2016, Julian Barnett <jbarnett@tableau.com>
#
# This file is part of Ansible.
#
# Ansible is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# Ansible is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with Ansible. If not, see <http://www.gnu.org/licenses/>.
'''
MDT external inventory script
=================================
author: J Barnett 06/23/2016 01:15
maintainer: J Barnett (github @jbarnett1981)
'''
import argparse
import json
import pymssql
try:
import configparser
except ImportError:
import ConfigParser as configparser
class MDTInventory(object):
def __init__(self):
''' Main execution path '''
self.conn = None
# Initialize empty inventory
self.inventory = self._empty_inventory()
# Read CLI arguments
self.read_settings()
self.parse_cli_args()
# Get Hosts
if self.args.list:
self.get_hosts()
# Get specific host vars
if self.args.host:
self.get_hosts(self.args.host)
def _connect(self, query):
'''
Connect to MDT and dump contents of dbo.ComputerIdentity database
'''
if not self.conn:
self.conn = pymssql.connect(server=self.mdt_server + "\\" + self.mdt_instance, user=self.mdt_user, password=self.mdt_password,
database=self.mdt_database)
cursor = self.conn.cursor()
cursor.execute(query)
self.mdt_dump = cursor.fetchall()
self.conn.close()
def get_hosts(self, hostname=False):
'''
Gets host from MDT Database
'''
if hostname:
query = ("SELECT t1.ID, t1.Description, t1.MacAddress, t2.Role "
"FROM ComputerIdentity as t1 join Settings_Roles as t2 on t1.ID = t2.ID where t1.Description = '%s'" % hostname)
else:
query = 'SELECT t1.ID, t1.Description, t1.MacAddress, t2.Role FROM ComputerIdentity as t1 join Settings_Roles as t2 on t1.ID = t2.ID'
self._connect(query)
# Configure to group name configured in Ansible Tower for this inventory
groupname = self.mdt_groupname
# Initialize empty host list
hostlist = []
# Parse through db dump and populate inventory
for hosts in self.mdt_dump:
self.inventory['_meta']['hostvars'][hosts[1]] = {'id': hosts[0], 'name': hosts[1], 'mac': hosts[2], 'role': hosts[3]}
hostlist.append(hosts[1])
self.inventory[groupname] = hostlist
# Print it all out
print(json.dumps(self.inventory, indent=2))
def _empty_inventory(self):
'''
Create empty inventory dictionary
'''
return {"_meta": {"hostvars": {}}}
def read_settings(self):
'''
Reads the settings from the mdt.ini file
'''
config = configparser.SafeConfigParser()
config.read('mdt.ini')
# MDT Server and instance and database
self.mdt_server = config.get('mdt', 'server')
self.mdt_instance = config.get('mdt', 'instance')
self.mdt_database = config.get('mdt', 'database')
# MDT Login credentials
if config.has_option('mdt', 'user'):
self.mdt_user = config.get('mdt', 'user')
if config.has_option('mdt', 'password'):
self.mdt_password = config.get('mdt', 'password')
# Group name in Tower
if config.has_option('tower', 'groupname'):
self.mdt_groupname = config.get('tower', 'groupname')
def parse_cli_args(self):
'''
Command line argument processing
'''
parser = argparse.ArgumentParser(description='Produce an Ansible Inventory file based on MDT')
parser.add_argument('--list', action='store_true', default=False, help='List instances')
parser.add_argument('--host', action='store', help='Get all the variables about a specific instance')
self.args = parser.parse_args()
if __name__ == "__main__":
# Run the script
MDTInventory()