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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_image
short_description: Manage the container images on the atomic host platform
description:
- Manage the container images on the atomic host platform
- Allows to execute the commands specified by the RUN label in the container image when present
version_added: "2.2"
author: "Saravanan KR @krsacme"
notes:
- Host should support C(atomic) command
requirements:
- atomic
- "python >= 2.6"
options:
backend:
description:
- Define the backend where the image is pulled.
required: False
choices: ["docker", "ostree"]
default: None
version_added: "2.4"
name:
description:
- Name of the container image
required: True
default: null
state:
description:
- The state of the container image.
- The state C(latest) will ensure container image is upgraded to the latest version and forcefully restart container, if running.
required: False
choices: ["present", "absent", "latest"]
default: latest
started:
description:
- Start or Stop the container
required: False
choices: ["yes", "no"]
default: yes
'''
EXAMPLES = '''
# Execute the run command on rsyslog container image (atomic run rhel7/rsyslog)
- atomic_image:
name: rhel7/rsyslog
state: latest
# Pull busybox to the OSTree backend
- atomic_image:
name: busybox
state: latest
backend: ostree
'''
RETURN = '''
msg:
description: The command standard output
returned: always
type: string
sample: [u'Using default tag: latest ...']
'''
# import module snippets
from ansible.module_utils.basic import AnsibleModule
def do_upgrade(module, image):
args = ['atomic', 'update', '--force', image]
rc, out, err = module.run_command(args, check_rc=False)
if rc != 0: # something went wrong emit the msg
module.fail_json(rc=rc, msg=err)
elif 'Image is up to date' in out:
return False
return True
def core(module):
image = module.params['name']
state = module.params['state']
started = module.params['started']
backend = module.params['backend']
is_upgraded = False
module.run_command_environ_update = dict(LANG='C', LC_ALL='C', LC_MESSAGES='C')
out = {}
err = {}
rc = 0
if backend:
if state == 'present' or state == 'latest':
args = ['atomic', 'pull', "--storage=%s" % backend, image]
rc, out, err = module.run_command(args, check_rc=False)
if rc < 0:
module.fail_json(rc=rc, msg=err)
else:
out_run = ""
if started:
args = ['atomic', 'run', "--storage=%s" % backend, image]
rc, out_run, err = module.run_command(args, check_rc=False)
if rc < 0:
module.fail_json(rc=rc, msg=err)
changed = "Extracting" in out or "Copying blob" in out
module.exit_json(msg=(out + out_run), changed=changed)
elif state == 'absent':
args = ['atomic', 'images', 'delete', "--storage=%s" % backend, image]
if rc < 0:
module.fail_json(rc=rc, msg=err)
else:
changed = "Unable to find" not in out
module.exit_json(msg=out, changed=changed)
return
if state == 'present' or state == 'latest':
if state == 'latest':
is_upgraded = do_upgrade(module, image)
if started:
args = ['atomic', 'run', image]
else:
args = ['atomic', 'install', image]
elif state == 'absent':
args = ['atomic', 'uninstall', image]
rc, out, err = module.run_command(args, check_rc=False)
if rc < 0:
module.fail_json(rc=rc, msg=err)
elif rc == 1 and 'already present' in err:
module.exit_json(restult=err, changed=is_upgraded)
elif started and 'Container is running' in out:
module.exit_json(result=out, changed=is_upgraded)
else:
module.exit_json(msg=out, changed=True)
def main():
module = AnsibleModule(
argument_spec=dict(
backend=dict(default=None, choices=['docker', 'ostree']),
name=dict(default=None, required=True),
state=dict(default='latest', choices=['present', 'absent', 'latest']),
started=dict(default='yes', type='bool'),
),
)
# 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=str(e))
if __name__ == '__main__':
main()
|
