ansible/library/fail

#!/usr/bin/python
# -*- coding: utf-8 -*-

# Copyright 2012 Dag Wieers <dag@wieers.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/>.

DOCUMENTATION = '''
---
module: fail
short_description: Fail with custom message
description:
     - This module fails the progress with a custom message. It can be
       useful for bailing out when a certain condition is met using only_if.
version_added: "0.8"
options:
  msg:
    description:
      - The customized message used for failing execution. If ommited,
        fail will simple bail out with a generic message.
    required: false
    default: "'Failed because only_if condition is true'"
  rc:
    description:
      - The return code of the failure. This is currently not used by
        Ansible, but might be used in the future.
    required: false
    default: 1
examples:
    - code: |
        action: fail msg="The system may not be provisioned according to the CMDB status." rc=100
        only_if: "'$cmdb_status' != 'to-be-staged'"

      description: "Example playbook using fail and only_if together"

author: Dag Wieers
'''

def main():

    module = AnsibleModule(
        argument_spec = dict(
            msg = dict(default='Failed because only_if condition is true'),
            rc = dict(default=1),
        )
    )

    module.fail_json(rc=module.params['rc'], msg=module.params['msg'])

# this is magic, see lib/ansible/module_common.py
#<<INCLUDE_ANSIBLE_MODULE_COMMON>>
main()