#!/usr/bin/env python

# ansible-pull is a script that runs ansible in local mode
# after checking out a playbooks directory from git.  There is an
# example playbook to bootstrap this script in the examples/ dir which
# installs ansible and sets it up to run on cron.
#
# usage:
#   ansible-pull -d /var/ansible/local -U http://wherever/content.git -C production
#
# the git repo must contain a playbook named 'local.yml'

# (c) 2012, Stephen Fromm <sfromm@gmail.com>
#
# 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/>.

import os
import subprocess
import sys
from optparse import OptionParser

DEFAULT_PLAYBOOK = 'local.yml'

def _run(cmd):
    cmd = subprocess.Popen(cmd, shell=True,
                           stdout=subprocess.PIPE, stderr=subprocess.PIPE)
    (out, err) = cmd.communicate()
    print out
    if cmd.returncode != 0:
        print err
    return cmd.returncode

def main(args):
    """ Set up and run a local playbook """
    usage = "%prog [options]"
    parser = OptionParser()
    parser.add_option('-d', '--directory', dest='dest', default=None,
                      help='Directory to checkout git repository')
    parser.add_option('-U', '--url', dest='url',
                      default=None,
                      help='URL of git repository')
    parser.add_option('-C', '--checkout', dest='checkout',
                      default="HEAD",
                      help='Branch/Tag/Commit to checkout.  Defaults to HEAD.')
    options, args = parser.parse_args(args)

    git_opts = "repo=%s dest=%s version=%s" % (options.url, options.dest, options.checkout)
    cmd = 'ansible all -c local -m git -a "%s"' % git_opts
    print "cmd=%s" % cmd
    rc = _run(cmd)
    if rc != 0:
        return rc

    os.chdir(options.dest)
    cmd = 'ansible-playbook -c local %s' % DEFAULT_PLAYBOOK
    rc = _run(cmd)
    return rc

if __name__ == '__main__':
    try:
        sys.exit(main(sys.argv[1:]))
    except KeyboardInterrupt, e:
        print >>sys.stderr, "Exit on user request.\n"
        sys.exit(1)