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community.general/plugins/modules/cloud/packet/packet_volume_attachment.py
Alexei Znamensky e91903c531 Tidy up validate-modules ignores doc-required-mismatch
2020-11-28 16:54:00 +13:00

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#!/usr/bin/python
# -*- coding: utf-8 -*-
# Copyright: (c) 2019, Nurfet Becirevic <nurfet.becirevic@gmail.com>
# Copyright: (c) 2017, Tomas Karasek <tom.to.the.k@gmail.com>
# 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: packet_volume_attachment
short_description: Attach/detach a volume to a device in the Packet host.
description:
- Attach/detach a volume to a device in the Packet host.
- API is documented at U(https://www.packet.com/developers/api/volumes/).
- "This module creates the attachment route in the Packet API. In order to discover
the block devices on the server, you have to run the Attach Scripts,
as documented at U(https://help.packet.net/technical/storage/packet-block-storage-linux)."
version_added: '0.2.0'
author:
- Tomas Karasek (@t0mk) <tom.to.the.k@gmail.com>
- Nurfet Becirevic (@nurfet-becirevic) <nurfet.becirevic@gmail.com>
options:
state:
description:
- Indicate desired state of the attachment.
default: present
choices: ['present', 'absent']
type: str
auth_token:
description:
- Packet API token. You can also supply it in env var C(PACKET_API_TOKEN).
type: str
project_id:
description:
- UUID of the project to which the device and volume belong.
type: str
required: true
volume:
description:
- Selector for the volume.
- It can be a UUID, an API-generated volume name, or user-defined description string.
- 'Example values: 4a347482-b546-4f67-8300-fb5018ef0c5, volume-4a347482, "my volume"'
type: str
required: true
device:
description:
- Selector for the device.
- It can be a UUID of the device, or a hostname.
- 'Example values: 98a14f7a-3d27-4478-b7cf-35b5670523f3, "my device"'
type: str
requirements:
- "python >= 2.6"
- "packet-python >= 1.35"
'''
EXAMPLES = '''
# All the examples assume that you have your Packet API token in env var PACKET_API_TOKEN.
# You can also pass the api token in module param auth_token.
- hosts: localhost
vars:
volname: testvol
devname: testdev
project_id: 52000fb2-ee46-4673-93a8-de2c2bdba33b
tasks:
- name: Create volume
packet_volume:
description: "{{ volname }}"
project_id: "{{ project_id }}"
facility: ewr1
plan: storage_1
state: present
size: 10
snapshot_policy:
snapshot_count: 10
snapshot_frequency: 1day
- name: Create a device
packet_device:
project_id: "{{ project_id }}"
hostnames: "{{ devname }}"
operating_system: ubuntu_16_04
plan: baremetal_0
facility: ewr1
state: present
- name: Attach testvol to testdev
community.general.packet_volume_attachment:
project_id: "{{ project_id }}"
volume: "{{ volname }}"
device: "{{ devname }}"
- name: Detach testvol from testdev
community.general.packet_volume_attachment:
project_id: "{{ project_id }}"
volume: "{{ volname }}"
device: "{{ devname }}"
state: absent
'''
RETURN = '''
volume_id:
description: UUID of volume addressed by the module call.
type: str
returned: success
device_id:
description: UUID of device addressed by the module call.
type: str
returned: success
'''
import uuid
from ansible.module_utils.basic import AnsibleModule, env_fallback
from ansible.module_utils._text import to_native
HAS_PACKET_SDK = True
try:
import packet
except ImportError:
HAS_PACKET_SDK = False
PACKET_API_TOKEN_ENV_VAR = "PACKET_API_TOKEN"
STATES = ["present", "absent"]
def is_valid_uuid(myuuid):
try:
val = uuid.UUID(myuuid, version=4)
except ValueError:
return False
return str(val) == myuuid
def get_volume_selector(spec):
if is_valid_uuid(spec):
return lambda v: v['id'] == spec
else:
return lambda v: v['name'] == spec or v['description'] == spec
def get_device_selector(spec):
if is_valid_uuid(spec):
return lambda v: v['id'] == spec
else:
return lambda v: v['hostname'] == spec
def do_attach(packet_conn, vol_id, dev_id):
api_method = "storage/{0}/attachments".format(vol_id)
packet_conn.call_api(
api_method,
params={"device_id": dev_id},
type="POST")
def do_detach(packet_conn, vol, dev_id=None):
def dev_match(a):
return (dev_id is None) or (a['device']['id'] == dev_id)
for a in vol['attachments']:
if dev_match(a):
print(a['href'])
packet_conn.call_api(a['href'], type="DELETE")
def validate_selected(l, resource_type, spec):
if len(l) > 1:
_msg = ("more than one {0} matches specification {1}: {2}".format(
resource_type, spec, l))
raise Exception(_msg)
if len(l) == 0:
_msg = "no {0} matches specification: {1}".format(resource_type, spec)
raise Exception(_msg)
def get_attached_dev_ids(volume_dict):
if len(volume_dict['attachments']) == 0:
return []
else:
return [a['device']['id'] for a in volume_dict['attachments']]
def act_on_volume_attachment(target_state, module, packet_conn):
return_dict = {'changed': False}
volspec = module.params.get("volume")
devspec = module.params.get("device")
if devspec is None and target_state == 'present':
raise Exception("If you want to attach a volume, you must specify a device.")
project_id = module.params.get("project_id")
volumes_api_method = "projects/{0}/storage".format(project_id)
volumes = packet_conn.call_api(volumes_api_method,
params={'include': 'facility,attachments.device'})['volumes']
v_match = get_volume_selector(volspec)
matching_volumes = [v for v in volumes if v_match(v)]
validate_selected(matching_volumes, "volume", volspec)
volume = matching_volumes[0]
return_dict['volume_id'] = volume['id']
device = None
if devspec is not None:
devices_api_method = "projects/{0}/devices".format(project_id)
devices = packet_conn.call_api(devices_api_method)['devices']
d_match = get_device_selector(devspec)
matching_devices = [d for d in devices if d_match(d)]
validate_selected(matching_devices, "device", devspec)
device = matching_devices[0]
return_dict['device_id'] = device['id']
attached_device_ids = get_attached_dev_ids(volume)
if target_state == "present":
if len(attached_device_ids) == 0:
do_attach(packet_conn, volume['id'], device['id'])
return_dict['changed'] = True
elif device['id'] not in attached_device_ids:
# Don't reattach volume which is attached to a different device.
# Rather fail than force remove a device on state == 'present'.
raise Exception("volume {0} is already attached to device {1}".format(
volume, attached_device_ids))
else:
if device is None:
if len(attached_device_ids) > 0:
do_detach(packet_conn, volume)
return_dict['changed'] = True
elif device['id'] in attached_device_ids:
do_detach(packet_conn, volume, device['id'])
return_dict['changed'] = True
return return_dict
def main():
module = AnsibleModule(
argument_spec=dict(
state=dict(choices=STATES, default="present"),
auth_token=dict(
type='str',
fallback=(env_fallback, [PACKET_API_TOKEN_ENV_VAR]),
no_log=True
),
volume=dict(type="str", required=True),
project_id=dict(type="str", required=True),
device=dict(type="str"),
),
supports_check_mode=True,
)
if not HAS_PACKET_SDK:
module.fail_json(msg='packet required for this module')
if not module.params.get('auth_token'):
_fail_msg = ("if Packet API token is not in environment variable {0}, "
"the auth_token parameter is required".format(PACKET_API_TOKEN_ENV_VAR))
module.fail_json(msg=_fail_msg)
auth_token = module.params.get('auth_token')
packet_conn = packet.Manager(auth_token=auth_token)
state = module.params.get('state')
if state in STATES:
if module.check_mode:
module.exit_json(changed=False)
try:
module.exit_json(
**act_on_volume_attachment(state, module, packet_conn))
except Exception as e:
module.fail_json(
msg="failed to set volume_attachment state {0}: {1}".format(state, to_native(e)))
else:
module.fail_json(msg="{0} is not a valid state for this module".format(state))
if __name__ == '__main__':
main()
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