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Add new module mlnxos_bgp for managing bgp protocol on Mellanox MLNX-OS devices (#34305)
* Add new module mlnxos_bgp for managing bgp protocol on Mellanox MLNX-OS devices Signed-off-by: Samer Deeb <samerd@mellanox.com> * Add missing required field, and Fix Documentation Signed-off-by: Samer Deeb <samerd@mellanox.com> * Fix documentation of neighbors field Signed-off-by: Samer Deeb <samerd@mellanox.com>
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Samer Deeb
John R Barker
parent
8c87c76d81
commit
8277e9d1a5
3 changed files with 273 additions and 0 deletions
197
lib/ansible/modules/network/mlnxos/mlnxos_bgp.py
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lib/ansible/modules/network/mlnxos/mlnxos_bgp.py
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#!/usr/bin/python
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#
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# Copyright: Ansible Project
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# GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)
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from __future__ import absolute_import, division, print_function
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__metaclass__ = type
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ANSIBLE_METADATA = {'metadata_version': '1.1',
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'status': ['preview'],
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'supported_by': 'community'}
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DOCUMENTATION = """
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---
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module: mlnxos_bgp
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version_added: "2.5"
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author: "Samer Deeb (@samerd)"
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short_description: Configures BGP on Mellanox MLNX-OS network devices
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description:
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- This module provides declarative management of BGP router and neighbors
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on Mellanox MLNX-OS network devices.
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notes:
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- Tested on MLNX-OS 3.6.4000
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options:
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as_number:
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description:
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- Local AS number.
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required: true
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router_id:
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description:
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- Router IP address. Required if I(state=present).
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neighbors:
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description:
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- List of neighbors. Required if I(state=present).
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suboptions:
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remote_as:
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description:
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- Remote AS number.
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required: true
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neighbor:
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description:
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- Neighbor IP address.
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required: true
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state:
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description:
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- BGP state.
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default: present
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choices: ['present', 'absent']
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"""
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EXAMPLES = """
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- name: configure bgp
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mlnxos_bgp:
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as_number: 320
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router_id: 10.3.3.3
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neighbors:
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- remote_as: 321
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neighbor: 10.3.3.4
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state: present
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"""
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RETURN = """
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commands:
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description: The list of configuration mode commands to send to the device.
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returned: always
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type: list
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sample:
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- router bgp 172
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- exit
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- router bgp 172 router-id 2.3.4.5 force
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- router bgp 172 neighbor 2.3.4.6 remote-as 173
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"""
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import re
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from ansible.module_utils.basic import AnsibleModule
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from ansible.module_utils.network.mlnxos.mlnxos import get_bgp_summary
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from ansible.module_utils.network.mlnxos.mlnxos import BaseMlnxosModule
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class MlnxosBgpModule(BaseMlnxosModule):
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LOCAL_AS_REGEX = \
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r"BGP router identifier ([0-9\.]+), local AS number (\d+)"
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NEIGHBOR_REGEX = \
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r"^(\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3})\s+\d+\s+(\d+)"
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def init_module(self):
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""" initialize module
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"""
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neighbor_spec = dict(
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remote_as=dict(type='int', required=True),
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neighbor=dict(required=True),
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)
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element_spec = dict(
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as_number=dict(type='int', required=True),
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router_id=dict(),
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neighbors=dict(type='list', elements='dict',
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options=neighbor_spec),
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state=dict(choices=['present', 'absent'], default='present'),
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)
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argument_spec = dict()
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argument_spec.update(element_spec)
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self._module = AnsibleModule(
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argument_spec=argument_spec,
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supports_check_mode=True)
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def get_required_config(self):
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module_params = self._module.params
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bgp_params = {
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'as_number': module_params['as_number'],
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'router_id': module_params['router_id'],
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'state': module_params['state'],
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}
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neighbors = module_params['neighbors'] or []
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req_neighbors = bgp_params['neighbors'] = []
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for neighbor_data in neighbors:
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req_neighbors.append(
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(neighbor_data['neighbor'], neighbor_data['remote_as']))
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self.validate_param_values(bgp_params)
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self._required_config = bgp_params
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def _set_bgp_config(self, bgp_config):
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match = re.search(self.LOCAL_AS_REGEX, bgp_config, re.M)
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if match:
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self._current_config['router_id'] = match.group(1)
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self._current_config['as_number'] = int(match.group(2))
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matches = re.findall(self.NEIGHBOR_REGEX, bgp_config, re.M) or []
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neighbors = self._current_config['neighbors'] = []
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for match in matches:
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neighbors.append((match[0], int(match[1])))
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def _get_bgp_summary(self):
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return get_bgp_summary(self._module)
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def load_current_config(self):
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self._current_config = dict()
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bgp_config = self._get_bgp_summary()
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if bgp_config:
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self._set_bgp_config(bgp_config)
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def generate_commands(self):
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state = self._required_config['state']
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if state == 'present':
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self._generate_bgp_cmds()
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else:
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self._generate_no_bgp_cmds()
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def _generate_bgp_cmds(self):
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as_number = self._required_config['as_number']
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curr_as_num = self._current_config.get('as_number')
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bgp_removed = False
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if curr_as_num != as_number:
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if curr_as_num:
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self._commands.append('no router bgp %d' % curr_as_num)
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bgp_removed = True
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self._commands.append('router bgp %d' % as_number)
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self._commands.append('exit')
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curr_route_id = self._current_config.get('router_id')
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req_router_id = self._required_config['router_id']
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if req_router_id and req_router_id != curr_route_id or bgp_removed:
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self._commands.append('router bgp %d router-id %s force' %
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(as_number, req_router_id))
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req_neighbors = self._required_config['neighbors']
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curr_neighbors = self._current_config.get('neighbors', [])
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if not bgp_removed:
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for neighbor_data in curr_neighbors:
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if neighbor_data not in req_neighbors:
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(neighbor, remote_as) = neighbor_data
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self._commands.append(
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'router bgp %s no neighbor %s remote-as %s' %
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(as_number, neighbor, remote_as))
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for neighbor_data in req_neighbors:
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if bgp_removed or neighbor_data not in curr_neighbors:
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(neighbor, remote_as) = neighbor_data
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self._commands.append(
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'router bgp %s neighbor %s remote-as %s' %
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(as_number, neighbor, remote_as))
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def _generate_no_bgp_cmds(self):
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as_number = self._required_config['as_number']
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curr_as_num = self._current_config.get('as_number')
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if curr_as_num and curr_as_num == as_number:
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self._commands.append('no router bgp %d' % as_number)
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def main():
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""" main entry point for module execution
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"""
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MlnxosBgpModule.main()
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if __name__ == '__main__':
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main()
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