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#!/usr/bin/python
# -*- coding: utf-8 -*-
# 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/>.
ANSIBLE_METADATA = {'metadata_version': '1.0',
'status': ['preview'],
'supported_by': 'community'}
DOCUMENTATION = '''
---
module: atomic_container
short_description: Manage the containers on the atomic host platform
description:
- Manage the containers on the atomic host platform
- Allows to manage the lifecycle of a container on the atomic host platform
version_added: "2.4"
author: "Giuseppe Scrivano @gscrivano"
notes:
- Host should support C(atomic) command
requirements:
- atomic
- "python >= 2.6"
options:
backend:
description:
- Define the backend to use for the container
required: True
choices: ["docker", "ostree"]
default: None
name:
description:
- Name of the container
required: True
default: null
image:
description:
- The image to use to install the container
required: True
default: null
rootfs:
description:
- Define the rootfs of the image
required: False
default: null
state:
description:
- State of the container
required: True
choices: ["latest", "absent", "latest", "rollback"]
default: "latest"
mode:
description:
- Define if it is an user or a system container
required: True
choices: ["user", "system"]
default: None
values:
description:
- Values for the installation of the container. This option is permitted only with mode 'user' or 'system'.
The values specified here will be used at installation time as --set arguments for atomic install.
required: False
default: None
'''
EXAMPLES = '''
# Install the etcd system container
- atomic_container:
name: etcd
image: rhel/etcd
backend: ostree
state: latest
system: True
values:
- ETCD_NAME=etcd.server
# Uninstall the etcd system container
- atomic_container:
name: etcd
image: rhel/etcd
backend: ostree
state: absent
system: True
'''
RETURN = '''
msg:
description: The command standard output
returned: always
type: string
sample: [u'Using default tag: latest ...']
'''
# import module snippets
import traceback
from ansible.module_utils._text import to_native
from ansible.module_utils.basic import AnsibleModule
def do_install(module, mode, rootfs, container, image, values_list, backend):
system_list = ["--system"] if mode == 'system' else []
user_list = ["--user"] if mode == 'user' else []
rootfs_list = ["--rootfs=%s" % rootfs] if rootfs else []
args = ['atomic', 'install', "--storage=%s" % backend, '--name=%s' % container] + system_list + user_list + rootfs_list + values_list + [image]
rc, out, err = module.run_command(args, check_rc=False)
if rc != 0:
module.fail_json(rc=rc, msg=err)
else:
changed = "Extracting" in out or "Copying blob" in out
module.exit_json(msg=out, changed=changed)
def do_update(module, container, image, values_list):
args = ['atomic', 'containers', 'update', "--rebase=%s" % image] + values_list + [container]
rc, out, err = module.run_command(args, check_rc=False)
if rc != 0:
module.fail_json(rc=rc, msg=err)
else:
changed = "Extracting" in out or "Copying blob" in out
module.exit_json(msg=out, changed=changed)
def do_uninstall(module, name, backend):
args = ['atomic', 'uninstall', "--storage=%s" % backend, name]
rc, out, err = module.run_command(args, check_rc=False)
if rc != 0:
module.fail_json(rc=rc, msg=err)
module.exit_json(msg=out, changed=True)
def do_rollback(module, name):
args = ['atomic', 'containers', 'rollback', name]
rc, out, err = module.run_command(args, check_rc=False)
if rc != 0:
module.fail_json(rc=rc, msg=err)
else:
changed = "Rolling back" in out
module.exit_json(msg=out, changed=changed)
def core(module):
mode = module.params['mode']
name = module.params['name']
image = module.params['image']
rootfs = module.params['rootfs']
values = module.params['values']
backend = module.params['backend']
state = module.params['state']
module.run_command_environ_update = dict(LANG='C', LC_ALL='C', LC_MESSAGES='C')
out = {}
err = {}
rc = 0
values_list = ["--set=%s" % x for x in values] if values else []
args = ['atomic', 'containers', 'list', '--no-trunc', '-n', '--all', '-f', 'backend=%s' % backend, '-f', 'container=%s' % name]
rc, out, err = module.run_command(args, check_rc=False)
if rc != 0:
module.fail_json(rc=rc, msg=err)
return
present = name in out
if state == 'present' and present:
module.exit_json(msg=out, changed=False)
elif (state in ['latest', 'present']) and not present:
do_install(module, mode, rootfs, name, image, values_list, backend)
elif state == 'latest':
do_update(module, name, image, values_list)
elif state == 'absent':
if not present:
module.exit_json(msg="The container is not present", changed=False)
else:
do_uninstall(module, name, backend)
elif state == 'rollback':
do_rollback(module, name)
def main():
module = AnsibleModule(
argument_spec=dict(
mode=dict(default=None, choices=['user', 'system']),
name=dict(default=None, required=True),
image=dict(default=None, required=True),
rootfs=dict(default=None),
state=dict(default='latest', choices=['present', 'absent', 'latest', 'rollback']),
backend=dict(default=None, required=True, choices=['docker', 'ostree']),
values=dict(type='list', default=[]),
),
)
if module.params['values'] is not None and module.params['mode'] == 'default':
module.fail_json(msg="values is supported only with user or system mode", err=err)
# Verify that the platform supports atomic command
rc, out, err = module.run_command('atomic -v', check_rc=False)
if rc != 0:
module.fail_json(msg="Error in running atomic command", err=err)
try:
core(module)
except Exception as e:
module.fail_json(msg='Unanticipated error running atomic: %s' % to_native(e), exception=traceback.format_exc())
if __name__ == '__main__':
main()
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