ansible/plugins/inventory/vagrant.py

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#!/usr/bin/env python
"""
Vagrant external inventory script. Automatically finds the IP of the booted vagrant vm(s), and
returns it under the host group 'vagrant'
Example Vagrant configuration using this script:
config.vm.provision :ansible do |ansible|
ansible.playbook = "./provision/your_playbook.yml"
ansible.inventory_file = "./provision/inventory/vagrant.py"
ansible.verbose = true
end
"""
# Copyright (C) 2013 Mark Mandel <mark@compoundtheory.com>
#
# This program 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.
#
# This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
#
# Thanks to the spacewalk.py inventory script for giving me the basic structure
# of this.
#
import sys
import subprocess
import re
import string
from optparse import OptionParser
try:
import json
except:
import simplejson as json
# Options
#------------------------------
parser = OptionParser(usage="%prog [options] --list | --host <machine>")
parser.add_option('--list', default=False, dest="list", action="store_true",
help="Produce a JSON consumable grouping of Vagrant servers for Ansible")
parser.add_option('--host', default=None, dest="host",
help="Generate additional host specific details for given host for Ansible")
(options, args) = parser.parse_args()
#
# helper functions
#
# get all the ssh configs for all boxes in an array of dictionaries.
def get_ssh_config():
configs = []
boxes = list_running_boxes()
for box in boxes:
config = get_a_ssh_config(box)
configs.append(config)
return configs
#list all the running boxes
def list_running_boxes():
output = subprocess.check_output(["vagrant", "status"]).split('\n')
boxes = []
for line in output:
matcher = re.search("([^\s]+)[\s]+running \(.+", line)
if matcher:
boxes.append(matcher.group(1))
return boxes
#get the ssh config for a single box
def get_a_ssh_config(box_name):
"""Gives back a map of all the machine's ssh configurations"""
output = subprocess.check_output(["vagrant", "ssh-config", box_name]).split('\n')
config = {}
for line in output:
if line.strip() != '':
matcher = re.search("( )?([a-zA-Z]+) (.*)", line)
config[matcher.group(2)] = matcher.group(3)
return config
# List out servers that vagrant has running
#------------------------------
if options.list:
ssh_config = get_ssh_config()
hosts = { 'vagrant': []}
for data in ssh_config:
hosts['vagrant'].append(data['HostName'])
print json.dumps(hosts)
sys.exit(1)
# Get out the host details
#------------------------------
elif options.host:
result = {}
ssh_config = get_ssh_config()
details = filter(lambda x: (x['HostName'] == options.host), ssh_config)
if len(details) > 0:
#pass through the port, in case it's non standard.
result = details[0]
result['ansible_ssh_port'] = result['Port']
print json.dumps(result)
sys.exit(1)
# Print out help
#------------------------------
else:
parser.print_help()
sys.exit(1)