openstack/ansible-collections-openstack
Code Issues Proposed changes
ansible-collections-openstack/plugins/modules/subnet.py
Sagi Shnaidman 572fe85894 Remove ANSIBLE_METADATA from all modules 
It's not required for collections,
for more details:
https://github.com/ansible-collections/overview/issues/57
Change-Id: I954eef25bb9837c9282665ad5586dbe37f4f4424
2020-05-14 17:00:01 +03:00

380 lines
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Python
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#!/usr/bin/python
# coding: utf-8 -*-
# (c) 2013, Benno Joy <benno@ansible.com>
# GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)
DOCUMENTATION = '''
---
module: subnet
short_description: Add/Remove subnet to an OpenStack network
author: "Monty Taylor (@emonty)"
description:
- Add or Remove a subnet to an OpenStack network
options:
state:
description:
- Indicate desired state of the resource
choices: ['present', 'absent']
default: present
type: str
network_name:
description:
- Name of the network to which the subnet should be attached
- Required when I(state) is 'present'
type: str
name:
description:
- The name of the subnet that should be created. Although Neutron
allows for non-unique subnet names, this module enforces subnet
name uniqueness.
required: true
type: str
cidr:
description:
- The CIDR representation of the subnet that should be assigned to
the subnet. Required when I(state) is 'present' and a subnetpool
is not specified.
type: str
ip_version:
description:
- The IP version of the subnet 4 or 6
default: 4
type: str
choices: ['4', '6']
enable_dhcp:
description:
- Whether DHCP should be enabled for this subnet.
type: bool
default: 'yes'
gateway_ip:
description:
- The ip that would be assigned to the gateway for this subnet
type: str
no_gateway_ip:
description:
- The gateway IP would not be assigned for this subnet
type: bool
default: 'no'
dns_nameservers:
description:
- List of DNS nameservers for this subnet.
type: list
elements: str
allocation_pool_start:
description:
- From the subnet pool the starting address from which the IP should
be allocated.
type: str
allocation_pool_end:
description:
- From the subnet pool the last IP that should be assigned to the
virtual machines.
type: str
host_routes:
description:
- A list of host route dictionaries for the subnet.
type: list
elements: dict
suboptions:
destination:
description: The destination network (CIDR).
type: str
required: true
nexthop:
description: The next hop (aka gateway) for the I(destination).
type: str
required: true
ipv6_ra_mode:
description:
- IPv6 router advertisement mode
choices: ['dhcpv6-stateful', 'dhcpv6-stateless', 'slaac']
type: str
ipv6_address_mode:
description:
- IPv6 address mode
choices: ['dhcpv6-stateful', 'dhcpv6-stateless', 'slaac']
type: str
use_default_subnetpool:
description:
- Use the default subnetpool for I(ip_version) to obtain a CIDR.
type: bool
default: 'no'
project:
description:
- Project name or ID containing the subnet (name admin-only)
type: str
extra_specs:
description:
- Dictionary with extra key/value pairs passed to the API
required: false
default: {}
type: dict
requirements:
- "python >= 3.6"
- "openstacksdk"
extends_documentation_fragment:
- openstack.cloud.openstack
'''
EXAMPLES = '''
# Create a new (or update an existing) subnet on the specified network
- openstack.cloud.subnet:
state: present
network_name: network1
name: net1subnet
cidr: 192.168.0.0/24
dns_nameservers:
- 8.8.8.7
- 8.8.8.8
host_routes:
- destination: 0.0.0.0/0
nexthop: 12.34.56.78
- destination: 192.168.0.0/24
nexthop: 192.168.0.1
# Delete a subnet
- openstack.cloud.subnet:
state: absent
name: net1subnet
# Create an ipv6 stateless subnet
- openstack.cloud.subnet:
state: present
name: intv6
network_name: internal
ip_version: 6
cidr: 2db8:1::/64
dns_nameservers:
- 2001:4860:4860::8888
- 2001:4860:4860::8844
ipv6_ra_mode: dhcpv6-stateless
ipv6_address_mode: dhcpv6-stateless
'''
from ansible.module_utils.basic import AnsibleModule
from ansible_collections.openstack.cloud.plugins.module_utils.openstack import (openstack_full_argument_spec,
openstack_module_kwargs,
openstack_cloud_from_module)
def _can_update(subnet, module, cloud, filters=None):
"""Check for differences in non-updatable values"""
network_name = module.params['network_name']
ip_version = int(module.params['ip_version'])
ipv6_ra_mode = module.params['ipv6_ra_mode']
ipv6_a_mode = module.params['ipv6_address_mode']
if network_name:
network = cloud.get_network(network_name, filters)
if network:
netid = network['id']
else:
module.fail_json(msg='No network found for %s' % network_name)
if netid != subnet['network_id']:
module.fail_json(msg='Cannot update network_name in existing \
subnet')
if ip_version and subnet['ip_version'] != ip_version:
module.fail_json(msg='Cannot update ip_version in existing subnet')
if ipv6_ra_mode and subnet.get('ipv6_ra_mode', None) != ipv6_ra_mode:
module.fail_json(msg='Cannot update ipv6_ra_mode in existing subnet')
if ipv6_a_mode and subnet.get('ipv6_address_mode', None) != ipv6_a_mode:
module.fail_json(msg='Cannot update ipv6_address_mode in existing \
subnet')
def _needs_update(subnet, module, cloud, filters=None):
"""Check for differences in the updatable values."""
# First check if we are trying to update something we're not allowed to
_can_update(subnet, module, cloud, filters)
# now check for the things we are allowed to update
enable_dhcp = module.params['enable_dhcp']
subnet_name = module.params['name']
pool_start = module.params['allocation_pool_start']
pool_end = module.params['allocation_pool_end']
gateway_ip = module.params['gateway_ip']
no_gateway_ip = module.params['no_gateway_ip']
dns = module.params['dns_nameservers']
host_routes = module.params['host_routes']
curr_pool = dict(start=pool_start, end=pool_end)
if subnet['enable_dhcp'] != enable_dhcp:
return True
if subnet_name and subnet['name'] != subnet_name:
return True
if not subnet['allocation_pools'] and pool_start and pool_end:
return True
if subnet['allocation_pools'] and curr_pool not in subnet['allocation_pools']:
return True
if gateway_ip and subnet['gateway_ip'] != gateway_ip:
return True
if dns and sorted(subnet['dns_nameservers']) != sorted(dns):
return True
if host_routes:
curr_hr = sorted(subnet['host_routes'], key=lambda t: t.keys())
new_hr = sorted(host_routes, key=lambda t: t.keys())
if curr_hr != new_hr:
return True
if no_gateway_ip and subnet['gateway_ip']:
return True
return False
def _system_state_change(module, subnet, cloud, filters=None):
state = module.params['state']
if state == 'present':
if not subnet:
return True
return _needs_update(subnet, module, cloud, filters)
if state == 'absent' and subnet:
return True
return False
def main():
ipv6_mode_choices = ['dhcpv6-stateful', 'dhcpv6-stateless', 'slaac']
argument_spec = openstack_full_argument_spec(
name=dict(type='str', required=True),
network_name=dict(type='str'),
cidr=dict(type='str'),
ip_version=dict(type='str', default='4', choices=['4', '6']),
enable_dhcp=dict(type='bool', default=True),
gateway_ip=dict(type='str'),
no_gateway_ip=dict(type='bool', default=False),
dns_nameservers=dict(type='list', default=None, elements='str'),
allocation_pool_start=dict(type='str'),
allocation_pool_end=dict(type='str'),
host_routes=dict(type='list', default=None, elements='dict'),
ipv6_ra_mode=dict(type='str', choices=ipv6_mode_choices),
ipv6_address_mode=dict(type='str', choices=ipv6_mode_choices),
use_default_subnetpool=dict(type='bool', default=False),
extra_specs=dict(type='dict', default=dict()),
state=dict(type='str', default='present', choices=['absent', 'present']),
project=dict(type='str'),
)
module_kwargs = openstack_module_kwargs()
module = AnsibleModule(argument_spec,
supports_check_mode=True,
required_together=[
['allocation_pool_end', 'allocation_pool_start'],
],
**module_kwargs)
state = module.params['state']
network_name = module.params['network_name']
cidr = module.params['cidr']
ip_version = module.params['ip_version']
enable_dhcp = module.params['enable_dhcp']
subnet_name = module.params['name']
gateway_ip = module.params['gateway_ip']
no_gateway_ip = module.params['no_gateway_ip']
dns = module.params['dns_nameservers']
pool_start = module.params['allocation_pool_start']
pool_end = module.params['allocation_pool_end']
host_routes = module.params['host_routes']
ipv6_ra_mode = module.params['ipv6_ra_mode']
ipv6_a_mode = module.params['ipv6_address_mode']
use_default_subnetpool = module.params['use_default_subnetpool']
project = module.params.pop('project')
extra_specs = module.params['extra_specs']
# Check for required parameters when state == 'present'
if state == 'present':
if not module.params['network_name']:
module.fail_json(msg='network_name required with present state')
if (
not module.params['cidr']
and not use_default_subnetpool
and not extra_specs.get('subnetpool_id', False)
):
module.fail_json(msg='cidr or use_default_subnetpool or '
'subnetpool_id required with present state')
if pool_start and pool_end:
pool = [dict(start=pool_start, end=pool_end)]
else:
pool = None
if no_gateway_ip and gateway_ip:
module.fail_json(msg='no_gateway_ip is not allowed with gateway_ip')
sdk, cloud = openstack_cloud_from_module(module)
try:
if project is not None:
proj = cloud.get_project(project)
if proj is None:
module.fail_json(msg='Project %s could not be found' % project)
project_id = proj['id']
filters = {'tenant_id': project_id}
else:
project_id = None
filters = None
subnet = cloud.get_subnet(subnet_name, filters=filters)
if module.check_mode:
module.exit_json(changed=_system_state_change(module, subnet,
cloud, filters))
if state == 'present':
if not subnet:
kwargs = dict(
cidr=cidr,
ip_version=ip_version,
enable_dhcp=enable_dhcp,
subnet_name=subnet_name,
gateway_ip=gateway_ip,
disable_gateway_ip=no_gateway_ip,
dns_nameservers=dns,
allocation_pools=pool,
host_routes=host_routes,
ipv6_ra_mode=ipv6_ra_mode,
ipv6_address_mode=ipv6_a_mode,
tenant_id=project_id)
dup_args = set(kwargs.keys()) & set(extra_specs.keys())
if dup_args:
raise ValueError('Duplicate key(s) {0} in extra_specs'
.format(list(dup_args)))
if use_default_subnetpool:
kwargs['use_default_subnetpool'] = use_default_subnetpool
kwargs = dict(kwargs, **extra_specs)
subnet = cloud.create_subnet(network_name, **kwargs)
changed = True
else:
if _needs_update(subnet, module, cloud, filters):
if subnet['allocation_pools'] and pool is not None:
pool = pool + subnet['allocation_pools']
cloud.update_subnet(subnet['id'],
subnet_name=subnet_name,
enable_dhcp=enable_dhcp,
gateway_ip=gateway_ip,
disable_gateway_ip=no_gateway_ip,
dns_nameservers=dns,
allocation_pools=pool,
host_routes=host_routes)
changed = True
else:
changed = False
module.exit_json(changed=changed,
subnet=subnet,
id=subnet['id'])
elif state == 'absent':
if not subnet:
changed = False
else:
changed = True
cloud.delete_subnet(subnet_name)
module.exit_json(changed=changed)
except sdk.exceptions.OpenStackCloudException as e:
module.fail_json(msg=str(e))
if __name__ == '__main__':
main()
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