diff options
| -rwxr-xr-x | src/op_mode/bgp.py | 170 |
1 files changed, 101 insertions, 69 deletions
diff --git a/src/op_mode/bgp.py b/src/op_mode/bgp.py index 3f6d45dd7..af9ea788b 100755 --- a/src/op_mode/bgp.py +++ b/src/op_mode/bgp.py @@ -1,6 +1,6 @@ #!/usr/bin/env python3 # -# Copyright (C) 2022 VyOS maintainers and contributors +# Copyright (C) 2023 VyOS maintainers and contributors # # This program is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License version 2 or later as @@ -15,101 +15,133 @@ # along with this program. If not, see <http://www.gnu.org/licenses/>. # # Purpose: -# Displays bgp neighbors information. -# Used by the "show bgp (vrf <tag>) ipv4|ipv6 neighbors" commands. +# Displays BGP neighbors and tables information. import re import sys import typing -import jmespath from jinja2 import Template -from humps import decamelize - -from vyos.configquery import ConfigTreeQuery import vyos.opmode -ArgFamily = typing.Literal['inet', 'inet6'] - frr_command_template = Template(""" -{% if family %} - show bgp - {{ 'vrf ' ~ vrf if vrf else '' }} - {{ 'ipv6' if family == 'inet6' else 'ipv4'}} - {{ 'neighbor ' ~ peer if peer else 'summary' }} +show bgp + +{## VRF and family modifiers that may precede any options ##} + +{% if vrf %} + vrf {{vrf}} +{% endif %} + +{% if family == "inet" %} + ipv4 +{% elif family == "inet6" %} + ipv6 +{% elif family == "l2vpn" %} + l2vpn evpn +{% endif %} + +{% if family_modifier == "unicast" %} + unicast +{% elif family_modifier == "multicast" %} + multicast +{% elif family_modifier == "flowspec" %} + flowspec +{% elif family_modifier == "vpn" %} + vpn +{% endif %} + +{## Mutually exclusive query parameters ##} + +{# Network prefix #} +{% if prefix %} + {{prefix}} + + {% if longer_prefixes %} + longer-prefixes + {% elif best_path %} + bestpath + {% endif %} {% endif %} +{# Regex #} +{% if regex %} + regex {{regex}} +{% endif %} + +{## Raw modifier ##} + {% if raw %} json {% endif %} """) +ArgFamily = typing.Literal['inet', 'inet6', 'l2vpn'] +ArgFamilyModifier = typing.Literal['unicast', 'labeled_unicast', 'multicast', 'vpn', 'flowspec'] + +def show_summary(raw: bool): + from vyos.util import cmd + + if raw: + from json import loads + + output = cmd(f"vtysh -c 'show bgp summary json'").strip() -def _verify(func): - """Decorator checks if BGP config exists - BGP configuration can be present under vrf <tag> - If we do npt get arg 'peer' then it can be 'bgp summary' - """ - from functools import wraps - - @wraps(func) - def _wrapper(*args, **kwargs): - config = ConfigTreeQuery() - afi = 'ipv6' if kwargs.get('family') == 'inet6' else 'ipv4' - global_vrfs = ['all', 'default'] - peer = kwargs.get('peer') - vrf = kwargs.get('vrf') - unconf_message = f'BGP or neighbor is not configured' - # Add option to check the specific neighbor if we have arg 'peer' - peer_opt = f'neighbor {peer} address-family {afi}-unicast' if peer else '' - vrf_opt = '' - if vrf and vrf not in global_vrfs: - vrf_opt = f'vrf name {vrf}' - # Check if config does not exist - if not config.exists(f'{vrf_opt} protocols bgp {peer_opt}'): - raise vyos.opmode.UnconfiguredSubsystem(unconf_message) - return func(*args, **kwargs) - - return _wrapper - - -@_verify -def show_neighbors(raw: bool, - family: ArgFamily, - peer: typing.Optional[str], - vrf: typing.Optional[str]): - kwargs = dict(locals()) - frr_command = frr_command_template.render(kwargs) - frr_command = re.sub(r'\s+', ' ', frr_command) + # FRR 8.5 correctly returns an empty object when BGP is not running, + # we don't need to do anything special here + return loads(output) + else: + output = cmd(f"vtysh -c 'show bgp summary'") + return output +def show_neighbors(raw: bool): from vyos.util import cmd - output = cmd(f"vtysh -c '{frr_command}'") + from vyos.utils.dict import dict_to_list if raw: from json import loads - data = loads(output) - # Get list of the peers - peers = jmespath.search('*.peers | [0]', data) - if peers: - # Create new dict, delete old key 'peers' - # add key 'peers' neighbors to the list - list_peers = [] - new_dict = jmespath.search('* | [0]', data) - if 'peers' in new_dict: - new_dict.pop('peers') - - for neighbor, neighbor_options in peers.items(): - neighbor_options['neighbor'] = neighbor - list_peers.append(neighbor_options) - new_dict['peers'] = list_peers - return decamelize(new_dict) - data = jmespath.search('* | [0]', data) - return decamelize(data) + output = cmd(f"vtysh -c 'show bgp neighbors json'").strip() + d = loads(output) + return dict_to_list(d, save_key_to="neighbor") else: + output = cmd(f"vtysh -c 'show bgp neighbors'") return output +def show(raw: bool, + family: ArgFamily, + family_modifier: ArgFamilyModifier, + prefix: typing.Optional[str], + longer_prefixes: typing.Optional[bool], + best_path: typing.Optional[bool], + regex: typing.Optional[str], + vrf: typing.Optional[str]): + from vyos.utils.dict import dict_to_list + + if (longer_prefixes or best_path) and (prefix is None): + raise ValueError("longer_prefixes and best_path can only be used when prefix is given") + elif (family == "l2vpn") and (family_modifier is not None): + raise ValueError("l2vpn family does not accept any modifiers") + else: + kwargs = dict(locals()) + + frr_command = frr_command_template.render(kwargs) + frr_command = re.sub(r'\s+', ' ', frr_command) + + from vyos.util import cmd + output = cmd(f"vtysh -c '{frr_command}'") + + if raw: + from json import loads + d = loads(output) + if not ("routes" in d): + raise vyos.opmode.InternalError("FRR returned a BGP table with no routes field") + d = d["routes"] + routes = dict_to_list(d, save_key_to="route_key") + return routes + else: + return output if __name__ == '__main__': try: |