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community.general/plugins/modules/cloud/docker/docker_volume_info.py

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2020-03-09 10:11:07 +01:00
#!/usr/bin/python
# coding: utf-8
#
# Copyright 2017 Red Hat | Ansible, Alex Grönholm <alex.gronholm@nextday.fi>
# GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)
from __future__ import absolute_import, division, print_function
__metaclass__ = type
DOCUMENTATION = '''
module: docker_volume_info
short_description: Retrieve facts about Docker volumes
description:
- Performs largely the same function as the "docker volume inspect" CLI subcommand.
options:
name:
description:
- Name of the volume to inspect.
type: str
required: yes
aliases:
- volume_name
extends_documentation_fragment:
- community.general.docker
- community.general.docker.docker_py_1_documentation
author:
- Felix Fontein (@felixfontein)
requirements:
- "L(Docker SDK for Python,https://docker-py.readthedocs.io/en/stable/) >= 1.8.0 (use L(docker-py,https://pypi.org/project/docker-py/) for Python 2.6)"
- "Docker API >= 1.21"
'''
EXAMPLES = '''
- name: Get infos on volume
community.general.docker_volume_info:
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name: mydata
register: result
- name: Does volume exist?
ansible.builtin.debug:
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msg: "The volume {{ 'exists' if result.exists else 'does not exist' }}"
- name: Print information about volume
ansible.builtin.debug:
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var: result.volume
when: result.exists
'''
RETURN = '''
exists:
description:
- Returns whether the volume exists.
type: bool
returned: always
sample: true
volume:
description:
- Volume inspection results for the affected volume.
- Will be C(none) if volume does not exist.
returned: success
type: dict
sample: '{
"CreatedAt": "2018-12-09T17:43:44+01:00",
"Driver": "local",
"Labels": null,
"Mountpoint": "/var/lib/docker/volumes/ansible-test-bd3f6172/_data",
"Name": "ansible-test-bd3f6172",
"Options": {},
"Scope": "local"
}'
'''
import traceback
try:
from docker.errors import DockerException, NotFound
except ImportError:
# missing Docker SDK for Python handled in ansible.module_utils.docker.common
pass
from ansible_collections.community.general.plugins.module_utils.docker.common import (
AnsibleDockerClient,
RequestException,
)
def get_existing_volume(client, volume_name):
try:
return client.inspect_volume(volume_name)
except NotFound as dummy:
return None
except Exception as exc:
client.fail("Error inspecting volume: %s" % exc)
def main():
argument_spec = dict(
name=dict(type='str', required=True, aliases=['volume_name']),
)
client = AnsibleDockerClient(
argument_spec=argument_spec,
supports_check_mode=True,
min_docker_version='1.8.0',
min_docker_api_version='1.21',
)
try:
volume = get_existing_volume(client, client.module.params['name'])
client.module.exit_json(
changed=False,
exists=(True if volume else False),
volume=volume,
)
except DockerException as e:
client.fail('An unexpected docker error occurred: {0}'.format(e), exception=traceback.format_exc())
except RequestException as e:
client.fail('An unexpected requests error occurred when docker-py tried to talk to the docker daemon: {0}'.format(e), exception=traceback.format_exc())
if __name__ == '__main__':
main()