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#!/usr/bin/python
#
# 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/>.
#
DOCUMENTATION = '''
---
module: nxos_vxlan_vtep_vni
version_added: "2.2"
short_description: Creates a Virtual Network Identifier member (VNI)
description:
- Creates a Virtual Network Identifier member (VNI) for an NVE
overlay interface.
author: Gabriele Gerbino (@GGabriele)
extends_documentation_fragment: nxos
notes:
- default, where supported, restores params default value.
options:
interface:
description:
- Interface name for the VXLAN Network Virtualization Endpoint.
required: true
vni:
description:
- ID of the Virtual Network Identifier.
required: true
assoc_vrf:
description:
- This attribute is used to identify and separate processing VNIs
that are associated with a VRF and used for routing. The VRF
and VNI specified with this command must match the configuration
of the VNI under the VRF.
required: false
choices: ['true','false']
default: null
ingress_replication:
description:
- Specifies mechanism for host reachability advertisement.
required: false
choices: ['bgp','static']
default: null
multicast_group:
description:
- The multicast group (range) of the VNI. Valid values are
string and keyword 'default'.
required: false
default: null
peer_list:
description:
- Set the ingress-replication static peer list. Valid values
are an array, a space-separated string of ip addresses,
or the keyword 'default'.
required: false
default: null
suppress_arp:
description:
- Suppress arp under layer 2 VNI.
required: false
choices: ['true','false']
default: null
state:
description:
- Determines whether the config should be present or not
on the device.
required: false
default: present
choices: ['present','absent']
include_defaults:
description:
- Specify to use or not the complete running configuration
for module operations.
required: false
default: true
choices: ['true','true']
config:
description:
- Configuration string to be used for module operations. If not
specified, the module will use the current running configuration.
required: false
default: null
save:
description:
- Specify to save the running configuration after
module operations.
required: false
default: false
choices: ['true','false']
'''
EXAMPLES = '''
- nxos_vxlan_vtep_vni:
interface: nve1
vni: 6000
ingress_replication: default
username: "{{ un }}"
password: "{{ pwd }}"
host: "{{ inventory_hostname }}"
'''
RETURN = '''
proposed:
description: k/v pairs of parameters passed into module
returned: verbose mode
type: dict
sample: {"ingress_replication": "default", "interface": "nve1", "vni": "6000"}
existing:
description: k/v pairs of existing configuration
returned: verbose mode
type: dict
sample: {}
end_state:
description: k/v pairs of configuration after module execution
returned: verbose mode
type: dict
sample: {"assoc_vrf": false, "ingress_replication": "", "interface": "nve1",
"multicast_group": "", "peer_list": [],
"suppress_arp": false, "vni": "6000"}
updates:
description: commands sent to the device
returned: always
type: list
sample: ["interface nve1", "member vni 6000"]
changed:
description: check to see if a change was made on the device
returned: always
type: boolean
sample: true
'''
# COMMON CODE FOR MIGRATION
import re
from ansible.module_utils.basic import get_exception
from ansible.module_utils.netcfg import NetworkConfig, ConfigLine
from ansible.module_utils.shell import ShellError
try:
from ansible.module_utils.nxos import get_module
except ImportError:
from ansible.module_utils.nxos import NetworkModule
def to_list(val):
if isinstance(val, (list, tuple)):
return list(val)
elif val is not None:
return [val]
else:
return list()
class CustomNetworkConfig(NetworkConfig):
def expand_section(self, configobj, S=None):
if S is None:
S = list()
S.append(configobj)
for child in configobj.children:
if child in S:
continue
self.expand_section(child, S)
return S
def get_object(self, path):
for item in self.items:
if item.text == path[-1]:
parents = [p.text for p in item.parents]
if parents == path[:-1]:
return item
def to_block(self, section):
return '\n'.join([item.raw for item in section])
def get_section(self, path):
try:
section = self.get_section_objects(path)
return self.to_block(section)
except ValueError:
return list()
def get_section_objects(self, path):
if not isinstance(path, list):
path = [path]
obj = self.get_object(path)
if not obj:
raise ValueError('path does not exist in config')
return self.expand_section(obj)
def add(self, lines, parents=None):
"""Adds one or lines of configuration
"""
ancestors = list()
offset = 0
obj = None
## global config command
if not parents:
for line in to_list(lines):
item = ConfigLine(line)
item.raw = line
if item not in self.items:
self.items.append(item)
else:
for index, p in enumerate(parents):
try:
i = index + 1
obj = self.get_section_objects(parents[:i])[0]
ancestors.append(obj)
except ValueError:
# add parent to config
offset = index * self.indent
obj = ConfigLine(p)
obj.raw = p.rjust(len(p) + offset)
if ancestors:
obj.parents = list(ancestors)
ancestors[-1].children.append(obj)
self.items.append(obj)
ancestors.append(obj)
# add child objects
for line in to_list(lines):
# check if child already exists
for child in ancestors[-1].children:
if child.text == line:
break
else:
offset = len(parents) * self.indent
item = ConfigLine(line)
item.raw = line.rjust(len(line) + offset)
item.parents = ancestors
ancestors[-1].children.append(item)
self.items.append(item)
def get_network_module(**kwargs):
try:
return get_module(**kwargs)
except NameError:
return NetworkModule(**kwargs)
def get_config(module, include_defaults=False):
config = module.params['config']
if not config:
try:
config = module.get_config()
except AttributeError:
defaults = module.params['include_defaults']
config = module.config.get_config(include_defaults=defaults)
return CustomNetworkConfig(indent=2, contents=config)
def load_config(module, candidate):
config = get_config(module)
commands = candidate.difference(config)
commands = [str(c).strip() for c in commands]
save_config = module.params['save']
result = dict(changed=False)
if commands:
if not module.check_mode:
try:
module.configure(commands)
except AttributeError:
module.config(commands)
if save_config:
try:
module.config.save_config()
except AttributeError:
module.execute(['copy running-config startup-config'])
result['changed'] = True
result['updates'] = commands
return result
# END OF COMMON CODE
BOOL_PARAMS = ['suppress_arp']
PARAM_TO_COMMAND_KEYMAP = {
'assoc_vrf': 'associate-vrf',
'interface': 'interface',
'vni': 'member vni',
'ingress_replication': 'ingress-replication protocol',
'multicast_group': 'mcast-group',
'peer_list': 'peer-ip',
'suppress_arp': 'suppress-arp'
}
PARAM_TO_DEFAULT_KEYMAP = {}
WARNINGS = []
def invoke(name, *args, **kwargs):
func = globals().get(name)
if func:
return func(*args, **kwargs)
def get_value(arg, config, module):
if arg in BOOL_PARAMS:
REGEX = re.compile(r'\s+{0}\s*$'.format(PARAM_TO_COMMAND_KEYMAP[arg]), re.M)
value = False
try:
if REGEX.search(config):
value = True
except TypeError:
value = False
else:
REGEX = re.compile(r'(?:{0}\s)(?P<value>.*)$'.format(PARAM_TO_COMMAND_KEYMAP[arg]), re.M)
value = ''
if PARAM_TO_COMMAND_KEYMAP[arg] in config:
value = REGEX.search(config).group('value')
return value
def check_interface(module, netcfg):
config = str(netcfg)
REGEX = re.compile(r'(?:interface nve)(?P<value>.*)$', re.M)
value = ''
if 'interface nve' in config:
value = 'nve{0}'.format(REGEX.search(config).group('value'))
return value
def get_custom_value(arg, config, module):
splitted_config = config.splitlines()
if arg == 'assoc_vrf':
value = False
if 'associate-vrf' in config:
value = True
elif arg == 'peer_list':
value = []
REGEX = re.compile(r'(?:peer-ip\s)(?P<peer_value>.*)$', re.M)
for line in splitted_config:
peer_value = ''
if PARAM_TO_COMMAND_KEYMAP[arg] in line:
peer_value = REGEX.search(line).group('peer_value')
if peer_value:
value.append(peer_value)
return value
def get_existing(module, args):
existing = {}
netcfg = get_config(module)
custom = [
'assoc_vrf',
'peer_list'
]
interface_exist = check_interface(module, netcfg)
if interface_exist:
parents = ['interface {0}'.format(interface_exist)]
temp_config = netcfg.get_section(parents)
if 'associate-vrf' in temp_config:
parents.append('member vni {0} associate-vrf'.format(
module.params['vni']))
config = netcfg.get_section(parents)
elif 'member vni' in temp_config:
parents.append('member vni {0}'.format(module.params['vni']))
config = netcfg.get_section(parents)
else:
config = {}
if config:
for arg in args:
if arg not in ['interface', 'vni']:
if arg in custom:
existing[arg] = get_custom_value(arg, config, module)
else:
existing[arg] = get_value(arg, config, module)
existing['interface'] = interface_exist
existing['vni'] = module.params['vni']
return existing, interface_exist
def apply_key_map(key_map, table):
new_dict = {}
for key, value in table.items():
new_key = key_map.get(key)
if new_key:
value = table.get(key)
if value:
new_dict[new_key] = value
else:
new_dict[new_key] = value
return new_dict
def state_present(module, existing, proposed, candidate):
commands = list()
proposed_commands = apply_key_map(PARAM_TO_COMMAND_KEYMAP, proposed)
existing_commands = apply_key_map(PARAM_TO_COMMAND_KEYMAP, existing)
for key, value in proposed_commands.iteritems():
if key == 'associate-vrf':
command = 'member vni {0} {1}'.format(module.params['vni'], key)
if value:
commands.append(command)
else:
commands.append('no {0}'.format(command))
elif key == 'peer-ip' and value != 'default':
for peer in value:
commands.append('{0} {1}'.format(key, peer))
elif value is True:
commands.append(key)
elif value is False:
commands.append('no {0}'.format(key))
elif value == 'default':
if existing_commands.get(key):
existing_value = existing_commands.get(key)
if key == 'peer-ip':
for peer in existing_value:
commands.append('no {0} {1}'.format(key, peer))
else:
commands.append('no {0} {1}'.format(key, existing_value))
else:
if key.replace(' ', '_').replace('-', '_') in BOOL_PARAMS:
commands.append('no {0}'.format(key.lower()))
else:
command = '{0} {1}'.format(key, value.lower())
commands.append(command)
if commands:
vni_command = 'member vni {0}'.format(module.params['vni'])
ingress_replication_command = 'ingress-replication protocol static'
interface_command = 'interface {0}'.format(module.params['interface'])
if ingress_replication_command in commands:
static_level_cmds = [cmd for cmd in commands if 'peer' in cmd]
parents = [interface_command, vni_command, ingress_replication_command]
candidate.add(static_level_cmds, parents=parents)
commands = [cmd for cmd in commands if 'peer' not in cmd]
if vni_command in commands:
parents = [interface_command]
commands.remove(vni_command)
if module.params['assoc_vrf'] is None:
parents.append(vni_command)
candidate.add(commands, parents=parents)
def state_absent(module, existing, proposed, candidate):
if existing['assoc_vrf']:
commands = ['no member vni {0} associate-vrf'.format(
module.params['vni'])]
else:
commands = ['no member vni {0}'.format(module.params['vni'])]
parents = ['interface {0}'.format(module.params['interface'])]
candidate.add(commands, parents=parents)
def main():
argument_spec = dict(
interface=dict(required=True, type='str'),
vni=dict(required=True, type='str'),
assoc_vrf=dict(required=False, type='bool'),
multicast_group=dict(required=False, type='str'),
peer_list=dict(required=False, type='list'),
suppress_arp=dict(required=False, type='bool'),
ingress_replication=dict(required=False, type='str',
choices=['bgp', 'static', 'default']),
state=dict(choices=['present', 'absent'], default='present',
required=False),
include_defaults=dict(default=True),
config=dict(),
save=dict(type='bool', default=False)
)
module = get_network_module(argument_spec=argument_spec,
supports_check_mode=True)
if module.params['assoc_vrf']:
mutually_exclusive_params = ['multicast_group',
'suppress_arp',
'ingress_replication']
for param in mutually_exclusive_params:
if module.params[param]:
module.fail_json(msg='assoc_vrf cannot be used with '
'{0} param'.format(param))
if module.params['peer_list']:
if module.params['ingress_replication'] != 'static':
module.fail_json(msg='ingress_replication=static is required '
'when using peer_list param')
else:
peer_list = module.params['peer_list']
if peer_list[0] == 'default':
module.params['peer_list'] = 'default'
else:
stripped_peer_list = map(str.strip, peer_list)
module.params['peer_list'] = stripped_peer_list
state = module.params['state']
args = [
'assoc_vrf',
'interface',
'vni',
'ingress_replication',
'multicast_group',
'peer_list',
'suppress_arp'
]
existing, interface_exist = invoke('get_existing', module, args)
end_state = existing
proposed_args = dict((k, v) for k, v in module.params.iteritems()
if v is not None and k in args)
proposed = {}
for key, value in proposed_args.iteritems():
if key != 'interface':
if str(value).lower() == 'default':
value = PARAM_TO_DEFAULT_KEYMAP.get(key)
if value is None:
value = 'default'
if existing.get(key) or (not existing.get(key) and value):
proposed[key] = value
result = {}
if state == 'present' or (state == 'absent' and existing):
if not interface_exist:
WARNINGS.append("The proposed NVE interface does not exist. "
"Use nxos_interface to create it first.")
elif interface_exist != module.params['interface']:
module.fail_json(msg='Only 1 NVE interface is allowed on '
'the switch.')
elif (existing and state == 'absent' and
existing['vni'] != module.params['vni']):
module.fail_json(msg="ERROR: VNI delete failed: Could not find"
" vni node for {0}".format(
module.params['vni']),
existing_vni=existing['vni'])
else:
candidate = CustomNetworkConfig(indent=3)
invoke('state_%s' % state, module, existing, proposed, candidate)
try:
response = load_config(module, candidate)
result.update(response)
except ShellError:
exc = get_exception()
module.fail_json(msg=str(exc))
else:
result['updates'] = []
result['connected'] = module.connected
if module._verbosity > 0:
end_state, interface_exist = invoke('get_existing', module, args)
result['end_state'] = end_state
result['existing'] = existing
result['proposed'] = proposed_args
if WARNINGS:
result['warnings'] = WARNINGS
module.exit_json(**result)
if __name__ == '__main__':
main()
|