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ansible/library/supervisorctl

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#!/usr/bin/python
# -*- coding: utf-8 -*-
# (c) 2012, Matt Wright <matt@nobien.net>
#
# 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/>.
#
SUPERVISORCTL = None
def _find_supervisorctl():
paths = ['/usr/local/bin', '/usr/bin']
for p in paths:
e = p + '/supervisorctl'
if os.path.exists(e):
return e
module.fail_json(msg='supervisorctl is not installed')
def _is_running(name):
rc, out, err = _run('%s status %s' % (SUPERVISORCTL, name))
return 'RUNNING' in out
def _run(cmd):
# returns (rc, stdout, stderr) from shell command
process = subprocess.Popen(cmd, stdout=subprocess.PIPE,
stderr=subprocess.PIPE, shell=True)
stdout, stderr = process.communicate()
return (process.returncode, stdout, stderr)
def main():
arg_spec = dict(
name=dict(required=True),
state=dict(required=True, choices=['started', 'restarted', 'stopped'])
)
module = AnsibleModule(argument_spec=arg_spec)
name = module.params['name']
state = module.params['state']
SUPERVISORCTL = _find_supervisorctl()
running = _is_running(name)
if running and state == 'started':
module.exit_json(changed=False, name=name, state=state)
if running and state == 'stopped':
rc, out, err = _run('%s stop %s' % (SUPERVISORCTL, name))
if '%s: stopped' % name in out:
module.exit_json(changed=True, name=name, state=state)
module.fail_json(msg=out)
elif running and state == 'restarted':
rc, out, err = _run('%s update' % SUPERVISORCTL)
rc, out, err = _run('%s restart %s' % (SUPERVISORCTL, name))
if '%s: stopped' % name in out and '%s: started' % name in out:
module.exit_json(changed=True, name=name, state=state)
module.fail_json(msg=out)
elif not running and state == 'started':
rc, out, err = _run('%s update' % SUPERVISORCTL)
rc, out, err = _run('%s start %s' % (SUPERVISORCTL, name))
if '%s: started' % name in out:
module.exit_json(changed=True, name=name, state=state)
module.fail_json(msg=out)
elif not running and state == 'restarted':
module.fail_json(msg='Could not restart `%s` because it is not running' % name)
module.exit_json(changed=False, name=name, state=state)
# this is magic, see lib/ansible/module_common.py
#<<INCLUDE_ANSIBLE_MODULE_COMMON>>
main()