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ansible/network/nxos/nxos_bgp_af.py
GGabriele 687c2198d0 Fixing DOCSTRING
2016-09-02 17:35:46 +02:00

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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_bgp_af
version_added: "2.2"
short_description: Manages BGP Address-family configuration
description:
- Manages BGP Address-family configurations on NX-OS switches
author: Gabriele Gerbino (@GGabriele)
extends_documentation_fragment: nxos
notes:
- State 'absent' removes the whole BGP ASN configuration
- default, where supported, restores params default value
options:
asn:
description:
- BGP autonomous system number. Valid values are String,
Integer in ASPLAIN or ASDOT notation.
required: true
vrf:
description:
- Name of the VRF. The name 'default' is a valid VRF representing
the global bgp.
required: true
afi:
description:
- Address Family Identifie.
required: true
choices: ['ipv4','ipv6', 'vpnv4', 'vpnv6', 'l2vpn']
safi:
description:
- Sub Address Family Identifier.
required: true
choices: ['unicast','multicast', 'evpn']
additional_paths_install:
description:
- Install a backup path into the forwarding table and provide
prefix 'independent convergence (PIC) in case of a PE-CE link
failure.
required: false
choices: ['true','false']
default: null
additional_paths_receive:
description:
- Enables the receive capability of additional paths for all of
the neighbors under this address family for which the capability
has not been disabled.
required: false
choices: ['true','false']
default: null
additional_paths_selection:
description:
- Configures the capability of selecting additional paths for
a prefix. Valid values are a string defining the name of
the route-map.
required: false
default: null
additional_paths_send:
description:
- Enables the send capability of additional paths for all of
the neighbors under this address family for which the capability
has not been disabled.
required: false
choices: ['true','false']
default: null
advertise_l2vpn_evpn:
description:
- Advertise evpn routes.
required: false
choices: ['true','false']
default: null
client_to_client:
description:
- Configure client-to-client route reflection.
required: false
choices: ['true','false']
default: null
dampen_igp_metric:
description:
- Specify dampen value for IGP metric-related changes, in seconds.
Valid values are integer and keyword 'default'.
required: false
default: null
dampening_state:
description:
- Enable/disable route-flap dampening.
required: false
choices: ['true','false']
default: null
dampening_half_time:
description:
- Specify decay half-life in minutes for route-flap dampening.
Valid values are integer and keyword 'default'.
required: false
default: null
dampening_max_suppress_time:
description:
- Specify max suppress time for route-flap dampening stable route.
Valid values are integer and keyword 'default'.
required: false
default: null
dampening_reuse_time:
description:
- Specify route reuse time for route-flap dampening.
Valid values are integer and keyword 'default'.
required: false
dampening_routemap:
description:
- Specify route-map for route-flap dampening. Valid values are a
string defining the name of the route-map.
required: false
default: null
dampening_suppress_time:
description:
- Specify route suppress time for route-flap dampening.
Valid values are integer and keyword 'default'.
required: false
default: null
default_information_originate:
description:
- Default information originate.
required: false
choices: ['true','false']
default: null
default_metric:
description:
- Sets default metrics for routes redistributed into BGP.
Valid values are Integer or keyword 'default'
required: false
default: null
distance_ebgp:
description:
- Sets the administrative distance for eBGP routes.
Valid values are Integer or keyword 'default'.
required: false
default: null
distance_ibgp:
description:
- Sets the administrative distance for iBGP routes.
Valid values are Integer or keyword 'default'.
required: false
default: null
distance_local:
description:
- Sets the administrative distance for local BGP routes.
Valid values are Integer or keyword 'default'.
required: false
default: null
inject_map:
description:
- An array of route-map names which will specify prefixes to
inject. Each array entry must first specify the inject-map name,
secondly an exist-map name, and optionally the copy-attributes
keyword which indicates that attributes should be copied from
the aggregate. For example [['lax_inject_map', 'lax_exist_map'],
['nyc_inject_map', 'nyc_exist_map', 'copy-attributes'],
['fsd_inject_map', 'fsd_exist_map']]
required: false
default: null
maximum_paths:
description:
- Configures the maximum number of equal-cost paths for
load sharing. Valid value is an integer in the range 1-64.
default: null
maximum_paths_ibgp:
description:
- Configures the maximum number of ibgp equal-cost paths for
load sharing. Valid value is an integer in the range 1-64.
required: false
default: null
networks:
description:
- Networks to configure. Valid value is a list of network
prefixes to advertise. The list must be in the form of an array.
Each entry in the array must include a prefix address and an
optional route-map. Example: [['10.0.0.0/16', 'routemap_LA'],
['192.168.1.1', 'Chicago'], ['192.168.2.0/24],
['192.168.3.0/24', 'routemap_NYC']]
required: false
default: null
next_hop_route_map:
description:
- Configure a route-map for valid nexthops. Valid values are a
string defining the name of the route-map.
required: false
default: null
redistribute:
description:
- A list of redistribute directives. Multiple redistribute entries
are allowed. The list must be in the form of a nested array:
the first entry of each array defines the source-protocol to
redistribute from; the second entry defines a route-map name.
A route-map is highly advised but may be optional on some
platforms, in which case it may be omitted from the array list.
Example: [['direct', 'rm_direct'], ['lisp', 'rm_lisp']]
required: false
default: null
suppress_inactive:
description:
- Advertises only active routes to peers.
required: false
choices: ['true','false']
default: null
table_map:
description:
- Apply table-map to filter routes downloaded into URIB.
Valid values are a string.
required: false
default: null
table_map_filter:
description:
- Filters routes rejected by the route-map and does not download
them to the RIB.
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']
m_facts:
description:
- Used to print module facts
required: false
default: false
choices: ['true','false']
'''
EXAMPLES = '''
# configure a simple address-family
- nxos_bgp_af:
asn=65535
vrf=TESTING
afi=ipv4
safi=unicast
advertise_l2vpn_evpn=true
state=present
'''
RETURN = '''
proposed:
description: k/v pairs of parameters passed into module
returned: always
type: dict
sample: {"advertise_l2vpn_evpn": true, "afi": "ipv4",
"asn": "65535", "safi": "unicast", "vrf": "TESTING"}
existing:
description: k/v pairs of existing BGP AF configuration
type: dict
sample: {}
end_state:
description: k/v pairs of BGP AF configuration after module execution
returned: always
type: dict
sample: {"additional_paths_install": false,
"additional_paths_receive": false,
"additional_paths_selection": "",
"additional_paths_send": false,
"advertise_l2vpn_evpn": true, "afi": "ipv4",
"asn": "65535", "client_to_client": true,
"dampen_igp_metric": "600", "dampening_half_time": "",
"dampening_max_suppress_time": "", "dampening_reuse_time": "",
"dampening_routemap": "", "dampening_state": false,
"dampening_suppress_time": "",
"default_information_originate": false, "default_metric": "",
"distance_ebgp": "20", "distance_ibgp": "200",
"distance_local": "220", "inject_map": [], "maximum_paths": "1",
"maximum_paths_ibgp": "1", "networks": [],
"next_hop_route_map": "", "redistribute": [], "safi": "unicast",
"suppress_inactive": false, "table_map": "",
"table_map_filter": false, "vrf": "TESTING"}
updates:
description: commands sent to the device
returned: always
type: list
sample: ["router bgp 65535", "vrf TESTING",
"address-family ipv4 unicast", "advertise l2vpn evpn"]
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
import time
import collections
import itertools
import shlex
from ansible.module_utils.basic import AnsibleModule, env_fallback, get_exception
from ansible.module_utils.basic import BOOLEANS_TRUE, BOOLEANS_FALSE
from ansible.module_utils.shell import Shell, ShellError, HAS_PARAMIKO
from ansible.module_utils.netcfg import parse
from ansible.module_utils.urls import fetch_url
DEFAULT_COMMENT_TOKENS = ['#', '!']
class ConfigLine(object):
def __init__(self, text):
self.text = text
self.children = list()
self.parents = list()
self.raw = None
@property
def line(self):
line = ['set']
line.extend([p.text for p in self.parents])
line.append(self.text)
return ' '.join(line)
def __str__(self):
return self.raw
def __eq__(self, other):
if self.text == other.text:
return self.parents == other.parents
def __ne__(self, other):
return not self.__eq__(other)
def ignore_line(text, tokens=None):
for item in (tokens or DEFAULT_COMMENT_TOKENS):
if text.startswith(item):
return True
def get_next(iterable):
item, next_item = itertools.tee(iterable, 2)
next_item = itertools.islice(next_item, 1, None)
return itertools.izip_longest(item, next_item)
def parse(lines, indent, comment_tokens=None):
toplevel = re.compile(r'\S')
childline = re.compile(r'^\s*(.+)$')
ancestors = list()
config = list()
for line in str(lines).split('\n'):
text = str(re.sub(r'([{};])', '', line)).strip()
cfg = ConfigLine(text)
cfg.raw = line
if not text or ignore_line(text, comment_tokens):
continue
# handle top level commands
if toplevel.match(line):
ancestors = [cfg]
# handle sub level commands
else:
match = childline.match(line)
line_indent = match.start(1)
level = int(line_indent / indent)
parent_level = level - 1
cfg.parents = ancestors[:level]
if level > len(ancestors):
config.append(cfg)
continue
for i in range(level, len(ancestors)):
ancestors.pop()
ancestors.append(cfg)
ancestors[parent_level].children.append(cfg)
config.append(cfg)
return config
class CustomNetworkConfig(object):
def __init__(self, indent=None, contents=None, device_os=None):
self.indent = indent or 1
self._config = list()
self._device_os = device_os
if contents:
self.load(contents)
@property
def items(self):
return self._config
@property
def lines(self):
lines = list()
for item, next_item in get_next(self.items):
if next_item is None:
lines.append(item.line)
elif not next_item.line.startswith(item.line):
lines.append(item.line)
return lines
def __str__(self):
text = ''
for item in self.items:
if not item.parents:
expand = self.get_section(item.text)
text += '%s\n' % self.get_section(item.text)
return str(text).strip()
def load(self, contents):
self._config = parse(contents, indent=self.indent)
def load_from_file(self, filename):
self.load(open(filename).read())
def get(self, path):
if isinstance(path, basestring):
path = [path]
for item in self._config:
if item.text == path[-1]:
parents = [p.text for p in item.parents]
if parents == path[:-1]:
return item
def search(self, regexp, path=None):
regex = re.compile(r'^%s' % regexp, re.M)
if path:
parent = self.get(path)
if not parent or not parent.children:
return
children = [c.text for c in parent.children]
data = '\n'.join(children)
else:
data = str(self)
match = regex.search(data)
if match:
if match.groups():
values = match.groupdict().values()
groups = list(set(match.groups()).difference(values))
return (groups, match.groupdict())
else:
return match.group()
def findall(self, regexp):
regexp = r'%s' % regexp
return re.findall(regexp, str(self))
def expand(self, obj, items):
block = [item.raw for item in obj.parents]
block.append(obj.raw)
current_level = items
for b in block:
if b not in current_level:
current_level[b] = collections.OrderedDict()
current_level = current_level[b]
for c in obj.children:
if c.raw not in current_level:
current_level[c.raw] = collections.OrderedDict()
def to_lines(self, section):
lines = list()
for entry in section[1:]:
line = ['set']
line.extend([p.text for p in entry.parents])
line.append(entry.text)
lines.append(' '.join(line))
return lines
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)
if self._device_os == 'junos':
return self.to_lines(section)
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 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 flatten(self, data, obj=None):
if obj is None:
obj = list()
for k, v in data.items():
obj.append(k)
self.flatten(v, obj)
return obj
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 get_children(self, path):
obj = self.get_object(path)
if obj:
return obj.children
def difference(self, other, path=None, match='line', replace='line'):
updates = list()
config = self.items
if path:
config = self.get_children(path) or list()
if match == 'line':
for item in config:
if item not in other.items:
updates.append(item)
elif match == 'strict':
if path:
current = other.get_children(path) or list()
else:
current = other.items
for index, item in enumerate(config):
try:
if item != current[index]:
updates.append(item)
except IndexError:
updates.append(item)
elif match == 'exact':
if path:
current = other.get_children(path) or list()
else:
current = other.items
if len(current) != len(config):
updates.extend(config)
else:
for ours, theirs in itertools.izip(config, current):
if ours != theirs:
updates.extend(config)
break
if self._device_os == 'junos':
return updates
diffs = collections.OrderedDict()
for update in updates:
if replace == 'block' and update.parents:
update = update.parents[-1]
self.expand(update, diffs)
return self.flatten(diffs)
def replace(self, replace, text=None, regex=None, parents=None,
add_if_missing=False, ignore_whitespace=False):
match = None
parents = parents or list()
if text is None and regex is None:
raise ValueError('missing required arguments')
if not regex:
regex = ['^%s$' % text]
patterns = [re.compile(r, re.I) for r in to_list(regex)]
for item in self.items:
for regexp in patterns:
if ignore_whitespace is True:
string = item.text
else:
string = item.raw
if regexp.search(item.text):
if item.text != replace:
if parents == [p.text for p in item.parents]:
match = item
break
if match:
match.text = replace
indent = len(match.raw) - len(match.raw.lstrip())
match.raw = replace.rjust(len(replace) + indent)
elif add_if_missing:
self.add(replace, parents=parents)
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 argument_spec():
return dict(
# config options
running_config=dict(aliases=['config']),
save_config=dict(type='bool', default=False, aliases=['save'])
)
nxos_argument_spec = argument_spec()
NET_PASSWD_RE = re.compile(r"[\r\n]?password: $", re.I)
NET_COMMON_ARGS = dict(
host=dict(required=True),
port=dict(type='int'),
username=dict(fallback=(env_fallback, ['ANSIBLE_NET_USERNAME'])),
password=dict(no_log=True, fallback=(env_fallback, ['ANSIBLE_NET_PASSWORD'])),
ssh_keyfile=dict(fallback=(env_fallback, ['ANSIBLE_NET_SSH_KEYFILE']), type='path'),
transport=dict(default='cli', choices=['cli', 'nxapi']),
use_ssl=dict(default=False, type='bool'),
validate_certs=dict(default=True, type='bool'),
provider=dict(type='dict'),
timeout=dict(default=10, type='int')
)
NXAPI_COMMAND_TYPES = ['cli_show', 'cli_show_ascii', 'cli_conf', 'bash']
NXAPI_ENCODINGS = ['json', 'xml']
CLI_PROMPTS_RE = [
re.compile(r'[\r\n]?[a-zA-Z]{1}[a-zA-Z0-9-]*[>|#|%](?:\s*)$'),
re.compile(r'[\r\n]?[a-zA-Z]{1}[a-zA-Z0-9-]*\(.+\)#(?:\s*)$')
]
CLI_ERRORS_RE = [
re.compile(r"% ?Error"),
re.compile(r"^% \w+", re.M),
re.compile(r"% ?Bad secret"),
re.compile(r"invalid input", re.I),
re.compile(r"(?:incomplete|ambiguous) command", re.I),
re.compile(r"connection timed out", re.I),
re.compile(r"[^\r\n]+ not found", re.I),
re.compile(r"'[^']' +returned error code: ?\d+"),
re.compile(r"syntax error"),
re.compile(r"unknown command")
]
def to_list(val):
if isinstance(val, (list, tuple)):
return list(val)
elif val is not None:
return [val]
else:
return list()
class Nxapi(object):
def __init__(self, module):
self.module = module
# sets the module_utils/urls.py req parameters
self.module.params['url_username'] = module.params['username']
self.module.params['url_password'] = module.params['password']
self.url = None
self._nxapi_auth = None
def _get_body(self, commands, command_type, encoding, version='1.0', chunk='0', sid=None):
"""Encodes a NXAPI JSON request message
"""
if isinstance(commands, (list, set, tuple)):
commands = ' ;'.join(commands)
if encoding not in NXAPI_ENCODINGS:
msg = 'invalid encoding, received %s, exceped one of %s' % \
(encoding, ','.join(NXAPI_ENCODINGS))
self.module_fail_json(msg=msg)
msg = {
'version': version,
'type': command_type,
'chunk': chunk,
'sid': sid,
'input': commands,
'output_format': encoding
}
return dict(ins_api=msg)
def connect(self):
host = self.module.params['host']
port = self.module.params['port']
if self.module.params['use_ssl']:
proto = 'https'
if not port:
port = 443
else:
proto = 'http'
if not port:
port = 80
self.url = '%s://%s:%s/ins' % (proto, host, port)
def send(self, commands, command_type='cli_show_ascii', encoding='json'):
"""Send commands to the device.
"""
clist = to_list(commands)
if command_type not in NXAPI_COMMAND_TYPES:
msg = 'invalid command_type, received %s, exceped one of %s' % \
(command_type, ','.join(NXAPI_COMMAND_TYPES))
self.module_fail_json(msg=msg)
data = self._get_body(clist, command_type, encoding)
data = self.module.jsonify(data)
headers = {'Content-Type': 'application/json'}
if self._nxapi_auth:
headers['Cookie'] = self._nxapi_auth
response, headers = fetch_url(self.module, self.url, data=data,
headers=headers, method='POST')
self._nxapi_auth = headers.get('set-cookie')
if headers['status'] != 200:
self.module.fail_json(**headers)
response = self.module.from_json(response.read())
result = list()
output = response['ins_api']['outputs']['output']
for item in to_list(output):
if item['code'] != '200':
self.module.fail_json(**item)
else:
result.append(item['body'])
return result
class Cli(object):
def __init__(self, module):
self.module = module
self.shell = None
def connect(self, **kwargs):
host = self.module.params['host']
port = self.module.params['port'] or 22
username = self.module.params['username']
password = self.module.params['password']
timeout = self.module.params['timeout']
key_filename = self.module.params['ssh_keyfile']
allow_agent = (key_filename is not None) or (key_filename is None and password is None)
try:
self.shell = Shell(kickstart=False, prompts_re=CLI_PROMPTS_RE,
errors_re=CLI_ERRORS_RE)
self.shell.open(host, port=port, username=username,
password=password, key_filename=key_filename,
allow_agent=allow_agent, timeout=timeout)
except ShellError:
e = get_exception()
msg = 'failed to connect to %s:%s - %s' % (host, port, str(e))
self.module.fail_json(msg=msg)
def send(self, commands, encoding='text'):
try:
return self.shell.send(commands)
except ShellError:
e = get_exception()
self.module.fail_json(msg=e.message, commands=commands)
class NetworkModule(AnsibleModule):
def __init__(self, *args, **kwargs):
super(NetworkModule, self).__init__(*args, **kwargs)
self.connection = None
self._config = None
self._connected = False
@property
def connected(self):
return self._connected
@property
def config(self):
if not self._config:
self._config = self.get_config()
return self._config
def _load_params(self):
super(NetworkModule, self)._load_params()
provider = self.params.get('provider') or dict()
for key, value in provider.items():
if key in NET_COMMON_ARGS:
if self.params.get(key) is None and value is not None:
self.params[key] = value
def connect(self):
cls = globals().get(str(self.params['transport']).capitalize())
try:
self.connection = cls(self)
except TypeError:
e = get_exception()
self.fail_json(msg=e.message)
self.connection.connect()
if self.params['transport'] == 'cli':
self.connection.send('terminal length 0')
self._connected = True
def configure(self, commands):
commands = to_list(commands)
if self.params['transport'] == 'cli':
return self.configure_cli(commands)
else:
return self.execute(commands, command_type='cli_conf')
def configure_cli(self, commands):
commands = to_list(commands)
commands.insert(0, 'configure')
responses = self.execute(commands)
responses.pop(0)
return responses
def execute(self, commands, **kwargs):
if not self.connected:
self.connect()
return self.connection.send(commands, **kwargs)
def disconnect(self):
self.connection.close()
self._connected = False
def parse_config(self, cfg):
return parse(cfg, indent=2)
def get_config(self):
cmd = 'show running-config'
if self.params.get('include_defaults'):
cmd += ' all'
response = self.execute(cmd)
return response[0]
def get_module(**kwargs):
"""Return instance of NetworkModule
"""
argument_spec = NET_COMMON_ARGS.copy()
if kwargs.get('argument_spec'):
argument_spec.update(kwargs['argument_spec'])
kwargs['argument_spec'] = argument_spec
module = NetworkModule(**kwargs)
if module.params['transport'] == 'cli' and not HAS_PARAMIKO:
module.fail_json(msg='paramiko is required but does not appear to be installed')
return module
def custom_get_config(module, include_defaults=False):
config = module.params['running_config']
if not config:
cmd = 'show running-config'
if module.params['include_defaults']:
cmd += ' all'
if module.params['transport'] == 'nxapi':
config = module.execute([cmd], command_type='cli_show_ascii')[0]
else:
config = module.execute([cmd])[0]
return CustomNetworkConfig(indent=2, contents=config)
def load_config(module, candidate):
config = custom_get_config(module)
commands = candidate.difference(config)
commands = [str(c).strip() for c in commands]
save_config = module.params['save_config']
result = dict(changed=False)
if commands:
if not module.check_mode:
module.configure(commands)
if save_config:
module.config.save_config()
result['changed'] = True
result['updates'] = commands
return result
# END OF COMMON CODE
WARNINGS = []
BOOL_PARAMS = [
'additional_paths_install',
'additional_paths_receive',
'additional_paths_send',
'advertise_l2vpn_evpn',
'client_to_client',
'dampening_state',
'default_information_originate',
'suppress_inactive',
]
PARAM_TO_DEFAULT_KEYMAP = {
'maximum_paths': '1',
'maximum_paths_ibgp': '1',
'client_to_client': True,
'distance_ebgp': '20',
'distance_ibgp': '200',
'distance_local': '220',
'dampen_igp_metric': '600'
}
PARAM_TO_COMMAND_KEYMAP = {
'asn': 'router bgp',
'afi': 'address-family',
'safi': 'address-family',
'additional_paths_install': 'additional-paths install backup',
'additional_paths_receive': 'additional-paths receive',
'additional_paths_selection': 'additional-paths selection route-map',
'additional_paths_send': 'additional-paths send',
'advertise_l2vpn_evpn': 'advertise l2vpn evpn',
'client_to_client': 'client-to-client reflection',
'dampen_igp_metric': 'dampen-igp-metric',
'dampening_state': 'dampening',
'dampening_half_time': 'dampening',
'dampening_max_suppress_time': 'dampening',
'dampening_reuse_time': 'dampening',
'dampening_routemap': 'dampening route-map',
'dampening_suppress_time': 'dampening',
'default_information_originate': 'default-information originate',
'default_metric': 'default-metric',
'distance_ebgp': 'distance',
'distance_ibgp': 'distance',
'distance_local': 'distance',
'inject_map': 'inject-map',
'maximum_paths': 'maximum-paths',
'maximum_paths_ibgp': 'maximum-paths ibgp',
'networks': 'network',
'redistribute': 'redistribute',
'next_hop_route_map': 'nexthop route-map',
'suppress_inactive': 'suppress-inactive',
'table_map': 'table-map',
'table_map_filter': 'table-map-filter',
'vrf': 'vrf'
}
DAMPENING_PARAMS = [
'dampening_half_time',
'dampening_suppress_time',
'dampening_reuse_time',
'dampening_max_suppress_time'
]
def invoke(name, *args, **kwargs):
func = globals().get(name)
if func:
return func(*args, **kwargs)
def get_custom_list_value(config, arg, module):
value_list = []
splitted_config = config.splitlines()
if arg == 'inject_map':
REGEX_INJECT = ('.*inject-map\s(?P<inject_map>\S+)'
'\sexist-map\s(?P<exist_map>\S+)-*')
for line in splitted_config:
value = []
inject_group = {}
try:
match_inject = re.match(REGEX_INJECT, line, re.DOTALL)
inject_group = match_inject.groupdict()
inject_map = inject_group['inject_map']
exist_map = inject_group['exist_map']
value.append(inject_map)
value.append(exist_map)
except AttributeError:
value = []
if value:
copy_attributes = False
inject_map_command = ('inject-map {0} exist-map {1} '
'copy-attributes'.format(
inject_group['inject_map'],
inject_group['exist_map']))
REGEX = re.compile(r'\s+{0}\s*$'.format(
inject_map_command), re.M)
try:
if REGEX.search(config):
copy_attributes = True
except TypeError:
copy_attributes = False
if copy_attributes:
value.append('copy_attributes')
value_list.append(value)
elif arg == 'networks':
REGEX_NETWORK = re.compile(r'(?:network\s)(?P<value>.*)$')
for line in splitted_config:
value = []
network_group = {}
if 'network' in line:
value = REGEX_NETWORK.search(line).group('value').split()
if value:
if len(value) == 3:
value.pop(1)
value_list.append(value)
elif arg == 'redistribute':
RED_REGEX = re.compile(r'(?:{0}\s)(?P<value>.*)$'.format(
PARAM_TO_COMMAND_KEYMAP[arg]), re.M)
for line in splitted_config:
value = []
redistribute_group = {}
if 'redistribute' in line:
value = RED_REGEX.search(line).group('value').split()
if value:
if len(value) == 3:
value.pop(1)
elif len(value) == 4:
value = ['{0} {1}'.format(
value[0], value[1]), value[3]]
value_list.append(value)
return value_list
def get_custom_string_value(config, arg, module):
value = ''
if arg.startswith('distance'):
REGEX_DISTANCE = ('.*distance\s(?P<d_ebgp>\w+)\s(?P<d_ibgp>\w+)'
'\s(?P<d_local>\w+)')
try:
match_distance = re.match(REGEX_DISTANCE, config, re.DOTALL)
distance_group = match_distance.groupdict()
except AttributeError:
distance_group = {}
if distance_group:
if arg == 'distance_ebgp':
value = distance_group['d_ebgp']
elif arg == 'distance_ibgp':
value = distance_group['d_ibgp']
elif arg == 'distance_local':
value = distance_group['d_local']
elif arg.startswith('dampening'):
REGEX = re.compile(r'(?:{0}\s)(?P<value>.*)$'.format(
PARAM_TO_COMMAND_KEYMAP[arg]), re.M)
if arg == 'dampen_igp_metric' or arg == 'dampening_routemap':
value = ''
if PARAM_TO_COMMAND_KEYMAP[arg] in config:
value = REGEX.search(config).group('value')
else:
REGEX_DAMPENING = ('.*dampening\s(?P<half>\w+)\s(?P<reuse>\w+)'
'\s(?P<suppress>\w+)\s(?P<max_suppress>\w+)')
try:
match_dampening = re.match(REGEX_DAMPENING, config, re.DOTALL)
dampening_group = match_dampening.groupdict()
except AttributeError:
dampening_group = {}
if dampening_group:
if arg == 'dampening_half_time':
value = dampening_group['half']
elif arg == 'dampening_reuse_time':
value = dampening_group['reuse']
elif arg == 'dampening_suppress_time':
value = dampening_group['suppress']
elif arg == 'dampening_max_suppress_time':
value = dampening_group['max_suppress']
elif arg == 'table_map_filter':
TMF_REGEX = re.compile(r'\s+table-map.*filter$', re.M)
value = False
try:
if TMF_REGEX.search(config):
value = True
except TypeError:
value = False
elif arg == 'table_map':
TM_REGEX = re.compile(r'(?:table-map\s)(?P<value>\S+)(\sfilter)?$', re.M)
value = ''
if PARAM_TO_COMMAND_KEYMAP[arg] in config:
value = TM_REGEX.search(config).group('value')
return value
def get_value(arg, config, module):
custom = [
'inject_map',
'networks',
'redistribute'
]
if arg in BOOL_PARAMS:
REGEX = re.compile(r'\s+{0}\s*$'.format(PARAM_TO_COMMAND_KEYMAP[arg]), re.M)
value = False
try:
if REGEX.search(config):
value = True
except TypeError:
value = False
elif arg in custom:
value = get_custom_list_value(config, arg, module)
elif (arg.startswith('distance') or arg.startswith('dampening') or
arg.startswith('table_map')):
value = get_custom_string_value(config, arg, module)
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 get_existing(module, args):
existing = {}
netcfg = custom_get_config(module)
try:
asn_regex = '.*router\sbgp\s(?P<existing_asn>\d+).*'
match_asn = re.match(asn_regex, str(netcfg), re.DOTALL)
existing_asn_group = match_asn.groupdict()
existing_asn = existing_asn_group['existing_asn']
except AttributeError:
existing_asn = ''
if existing_asn:
parents = ["router bgp {0}".format(existing_asn)]
if module.params['vrf'] != 'default':
parents.append('vrf {0}'.format(module.params['vrf']))
parents.append('address-family {0} {1}'.format(module.params['afi'],
module.params['safi']))
config = netcfg.get_section(parents)
if config:
for arg in args:
if arg not in ['asn', 'afi', 'safi', 'vrf']:
existing[arg] = get_value(arg, config, module)
existing['asn'] = existing_asn
existing['afi'] = module.params['afi']
existing['safi'] = module.params['safi']
existing['vrf'] = module.params['vrf']
else:
WARNINGS.append("The BGP process {0} didn't exist but the task"
" just created it.".format(module.params['asn']))
return existing
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 fix_proposed(module, proposed, existing):
commands = list()
command = ''
fixed_proposed = {}
for key, value in proposed.iteritems():
if key in DAMPENING_PARAMS:
if value != 'default':
command = 'dampening {0} {1} {2} {3}'.format(
proposed.get('dampening_half_time'),
proposed.get('dampening_reuse_time'),
proposed.get('dampening_suppress_time'),
proposed.get('dampening_max_suppress_time'))
else:
if existing.get(key):
command = ('no dampening {0} {1} {2} {3}'.format(
existing['dampening_half_time'],
existing['dampening_reuse_time'],
existing['dampening_suppress_time'],
existing['dampening_max_suppress_time']))
if 'default' in command:
command = ''
elif key.startswith('distance'):
command = 'distance {0} {1} {2}'.format(
proposed.get('distance_ebgp'),
proposed.get('distance_ibgp'),
proposed.get('distance_local'))
else:
fixed_proposed[key] = value
if command:
if command not in commands:
commands.append(command)
return fixed_proposed, commands
def default_existing(existing_value, key, value):
commands = []
if key == 'network':
for network in existing_value:
if len(network) == 2:
commands.append('no network {0} route-map {1}'.format(
network[0], network[1]))
elif len(network) == 1:
commands.append('no network {0}'.format(
network[0]))
elif key == 'inject-map':
for maps in existing_value:
if len(maps) == 2:
commands.append('no inject-map {0} exist-map {1}'.format(
maps[0], maps[1]))
elif len(maps) == 3:
commands.append('no inject-map {0} exist-map {1} '
'copy-attributes'.format(
maps[0], maps[1]))
else:
commands.append('no {0} {1}'.format(key, existing_value))
return commands
def get_network_command(existing, key, value):
commands = []
existing_networks = existing.get('networks', [])
for inet in value:
if not isinstance(inet, list):
inet = [inet]
if inet not in existing_networks:
if len(inet) == 1:
command = '{0} {1}'.format(key, inet[0])
elif len(inet) == 2:
command = '{0} {1} route-map {2}'.format(key,
inet[0], inet[1])
commands.append(command)
return commands
def get_inject_map_command(existing, key, value):
commands = []
existing_maps = existing.get('inject_map', [])
for maps in value:
if not isinstance(maps, list):
maps = [maps]
if maps not in existing_maps:
if len(maps) == 2:
command = ('inject-map {0} exist-map {1}'.format(
maps[0], maps[1]))
elif len(maps) == 3:
command = ('inject-map {0} exist-map {1} '
'copy-attributes'.format(maps[0],
maps[1]))
commands.append(command)
return commands
def get_redistribute_command(existing, key, value):
commands = []
for rule in value:
if rule[1] == 'default':
existing_rule = existing.get('redistribute', [])
for each_rule in existing_rule:
if rule[0] in each_rule:
command = 'no {0} {1} route-map {2}'.format(
key, each_rule[0], each_rule[1])
commands.append(command)
else:
command = '{0} {1} route-map {2}'.format(key, rule[0], rule[1])
commands.append(command)
return commands
def get_table_map_command(module, existing, key, value):
commands = []
if key == 'table-map':
if value != 'default':
command = '{0} {1}'.format(key, module.params['table_map'])
if (module.params['table_map_filter'] is not None and
module.params['table_map_filter'] != 'default'):
command += ' filter'
commands.append(command)
else:
if existing.get('table_map'):
command = 'no {0} {1}'.format(key, existing.get('table_map'))
commands.append(command)
return commands
def get_default_table_map_filter(existing):
commands = []
existing_table_map_filter = existing.get('table_map_filter')
if existing_table_map_filter:
existing_table_map = existing.get('table_map')
if existing_table_map:
command = 'table-map {0}'.format(existing_table_map)
commands.append(command)
return commands
def state_present(module, existing, proposed, candidate):
fixed_proposed, commands = fix_proposed(module, proposed, existing)
proposed_commands = apply_key_map(PARAM_TO_COMMAND_KEYMAP, fixed_proposed)
existing_commands = apply_key_map(PARAM_TO_COMMAND_KEYMAP, existing)
for key, value in proposed_commands.iteritems():
if key == 'address-family':
addr_family_command = "address-family {0} {1}".format(
module.params['afi'], module.params['safi'])
if addr_family_command not in commands:
commands.append(addr_family_command)
elif key.startswith('table-map'):
table_map_commands = get_table_map_command(module, existing, key, value)
if table_map_commands:
commands.extend(table_map_commands)
elif value is True:
commands.append(key)
elif value is False:
commands.append('no {0}'.format(key))
elif value == 'default':
if key in PARAM_TO_DEFAULT_KEYMAP.keys():
commands.append('{0} {1}'.format(key, PARAM_TO_DEFAULT_KEYMAP[key]))
elif existing_commands.get(key):
if key == 'table-map-filter':
default_tmf_command = get_default_table_map_filter(existing)
if default_tmf_command:
commands.extend(default_tmf_command)
else:
existing_value = existing_commands.get(key)
default_command = default_existing(existing_value, key, value)
if default_command:
commands.extend(default_command)
else:
if key == 'network':
network_commands = get_network_command(existing, key, value)
if network_commands:
commands.extend(network_commands)
elif key == 'inject-map':
inject_map_commands = get_inject_map_command(existing, key, value)
if inject_map_commands:
commands.extend(inject_map_commands)
elif key == 'redistribute':
redistribute_commands = get_redistribute_command(existing, key, value)
if redistribute_commands:
commands.extend(redistribute_commands)
else:
command = '{0} {1}'.format(key, value)
commands.append(command)
if commands:
parents = ["router bgp {0}".format(module.params['asn'])]
if module.params['vrf'] != 'default':
parents.append('vrf {0}'.format(module.params['vrf']))
if len(commands) == 1:
candidate.add(commands, parents=parents)
elif len(commands) > 1:
parents.append('address-family {0} {1}'.format(module.params['afi'],
module.params['safi']))
if addr_family_command in commands:
commands.remove(addr_family_command)
candidate.add(commands, parents=parents)
def state_absent(module, existing, proposed, candidate):
commands = []
parents = ["router bgp {0}".format(module.params['asn'])]
if module.params['vrf'] != 'default':
parents.append('vrf {0}'.format(module.params['vrf']))
commands.append('no address-family {0} {1}'.format(
module.params['afi'], module.params['safi']))
candidate.add(commands, parents=parents)
def main():
argument_spec = dict(
asn=dict(required=True, type='str'),
vrf=dict(required=False, type='str', default='default'),
safi=dict(required=True, type='str', choices=['unicast','multicast', 'evpn']),
afi=dict(required=True, type='str', choices=['ipv4','ipv6', 'vpnv4', 'vpnv6', 'l2vpn']),
additional_paths_install=dict(required=False, type='bool'),
additional_paths_receive=dict(required=False, type='bool'),
additional_paths_selection=dict(required=False, type='str'),
additional_paths_send=dict(required=False, ype='bool'),
advertise_l2vpn_evpn=dict(required=False, type='bool'),
client_to_client=dict(required=False, type='bool'),
dampen_igp_metric=dict(required=False, type='str'),
dampening_state=dict(required=False, type='bool'),
dampening_half_time=dict(required=False, type='str'),
dampening_max_suppress_time=dict(required=False, type='str'),
dampening_reuse_time=dict(required=False, type='str'),
dampening_routemap=dict(required=False, type='str'),
dampening_suppress_time=dict(required=False, type='str'),
default_information_originate=dict(required=False, type='bool'),
default_metric=dict(required=False, type='str'),
distance_ebgp=dict(required=False, type='str'),
distance_ibgp=dict(required=False, type='str'),
distance_local=dict(required=False, type='str'),
inject_map=dict(required=False, type='list'),
maximum_paths=dict(required=False, type='str'),
maximum_paths_ibgp=dict(required=False, type='str'),
networks=dict(required=False, type='list'),
next_hop_route_map=dict(required=False, type='str'),
redistribute=dict(required=False, type='list'),
suppress_inactive=dict(required=False, type='bool'),
table_map=dict(required=False, type='str'),
table_map_filter=dict(required=False, type='bool'),
m_facts=dict(required=False, default=False, type='bool'),
state=dict(choices=['present', 'absent'], default='present',
required=False),
include_defaults=dict(default=True)
)
argument_spec.update(nxos_argument_spec)
module = get_module(argument_spec=argument_spec,
required_together=[DAMPENING_PARAMS,
['distance_ibgp',
'distance_ebgp',
'distance_local']],
supports_check_mode=True)
state = module.params['state']
if module.params['dampening_routemap']:
for param in DAMPENING_PARAMS:
if module.params[param]:
module.fail_json(msg='dampening_routemap cannot be used with'
' the {0} param'.format(param))
if module.params['advertise_l2vpn_evpn']:
if module.params['vrf'] == 'default':
module.fail_json(msg='It is not possible to advertise L2VPN '
'EVPN in the default VRF. Please specify '
'another one.', vrf=module.params['vrf'])
if module.params['table_map_filter'] and not module.params['table_map']:
module.fail_json(msg='table_map param is needed when using'
' table_map_filter filter.')
args = [
"additional_paths_install",
"additional_paths_receive",
"additional_paths_selection",
"additional_paths_send",
"advertise_l2vpn_evpn",
"afi",
"asn",
"client_to_client",
"dampen_igp_metric",
"dampening_half_time",
"dampening_max_suppress_time",
"dampening_reuse_time",
"dampening_suppress_time",
"dampening_routemap",
"dampening_state",
"default_information_originate",
"default_metric",
"distance_ebgp",
"distance_ibgp",
"distance_local",
"inject_map",
"maximum_paths",
"maximum_paths_ibgp",
"networks",
"next_hop_route_map",
"redistribute",
"safi",
"suppress_inactive",
"table_map",
"table_map_filter",
"vrf"
]
existing = invoke('get_existing', module, args)
if existing.get('asn'):
if (existing.get('asn') != module.params['asn'] and
state == 'present'):
module.fail_json(msg='Another BGP ASN already exists.',
proposed_asn=module.params['asn'],
existing_asn=existing.get('asn'))
end_state = existing
proposed_args = dict((k, v) for k, v in module.params.iteritems()
if v is not None and k in args)
if proposed_args.get('networks'):
if proposed_args['networks'][0] == 'default':
proposed_args['networks'] = 'default'
if proposed_args.get('inject_map'):
if proposed_args['inject_map'][0] == 'default':
proposed_args['inject_map'] = 'default'
proposed = {}
for key, value in proposed_args.iteritems():
if key not in ['asn', 'vrf']:
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):
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.params['m_facts']:
end_state = 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()
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