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# Copyright (C) 2015 Nippon Telegraph and Telephone Corporation.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
# implied.
# See the License for the specific language governing permissions and
# limitations under the License.
from base import *
import json
import toml
from itertools import chain
class GoBGPContainer(BGPContainer):
PEER_TYPE_INTERNAL = 0
PEER_TYPE_EXTERNAL = 1
SHARED_VOLUME = '/root/shared_volume'
def __init__(self, name, asn, router_id, ctn_image_name='gobgp',
log_level='debug'):
super(GoBGPContainer, self).__init__(name, asn, router_id,
ctn_image_name)
self.shared_volumes.append((self.config_dir, self.SHARED_VOLUME))
self.log_level = log_level
def _start_gobgp(self):
c = CmdBuffer()
c << '#!/bin/bash'
c << '/go/bin/gobgpd -f {0}/gobgpd.conf -l {1} -p > ' \
'{0}/gobgpd.log 2>&1'.format(self.SHARED_VOLUME, self.log_level)
cmd = 'echo "{0:s}" > {1}/start.sh'.format(c, self.config_dir)
local(cmd, capture=True)
cmd = "chmod 755 {0}/start.sh".format(self.config_dir)
local(cmd, capture=True)
cmd = 'docker exec -d {0} {1}/start.sh'.format(self.name,
self.SHARED_VOLUME)
local(cmd, capture=True)
def run(self):
super(GoBGPContainer, self).run()
self._start_gobgp()
return self.WAIT_FOR_BOOT
def _get_as_path(self, path):
asps = (p['as_paths'] for p in path['attrs'] if
p['type'] == BGP_ATTR_TYPE_AS_PATH and 'as_paths' in p)
asps = chain.from_iterable(asps)
asns = (asp['asns'] for asp in asps)
return list(chain.from_iterable(asns))
def _trigger_peer_cmd(self, cmd, peer):
if peer not in self.peers:
raise Exception('not found peer {0}'.format(peer.router_id))
peer_addr = self.peers[peer]['neigh_addr'].split('/')[0]
cmd = "docker exec {0} gobgp neighbor {1} {2}".format(self.name,
peer_addr,
cmd)
local(str(cmd), capture=True)
def disable_peer(self, peer):
self._trigger_peer_cmd('disable', peer)
def enable_peer(self, peer):
self._trigger_peer_cmd('enable', peer)
def get_local_rib(self, peer, rf='ipv4'):
if peer not in self.peers:
raise Exception('not found peer {0}'.format(peer.router_id))
peer_addr = self.peers[peer]['neigh_addr'].split('/')[0]
gobgp = '/go/bin/gobgp'
cmd = CmdBuffer(' ')
cmd << "docker exec {0} {1}".format(self.name, gobgp)
cmd << "-j neighbor {0} local -a {1}".format(peer_addr, rf)
output = local(str(cmd), capture=True)
n = json.loads(output)
return n
def get_global_rib(self, prefix='', rf='ipv4'):
gobgp = '/go/bin/gobgp'
cmd = 'docker exec {0} {1} -j global rib {2} -a {3}'.format(self.name,
gobgp,
prefix,
rf)
output = local(cmd, capture=True)
return json.loads(output)
def _get_adj_rib(self, adj_type, peer, prefix='', rf='ipv4'):
if peer not in self.peers:
raise Exception('not found peer {0}'.format(peer.router_id))
peer_addr = self.peers[peer]['neigh_addr'].split('/')[0]
gobgp = '/go/bin/gobgp'
cmd = 'docker exec {0} {1} neighbor {2}'\
' adj-{3} {4} -a {5} -j'.format(self.name, gobgp, peer_addr,
adj_type, prefix, rf)
output = local(cmd, capture=True)
return json.loads(output)
def get_adj_rib_in(self, peer, prefix='', rf='ipv4'):
return self._get_adj_rib('in', peer, prefix, rf)
def get_adj_rib_out(self, peer, prefix='', rf='ipv4'):
return self._get_adj_rib('out', peer, prefix, rf)
def get_neighbor_state(self, peer):
if peer not in self.peers:
raise Exception('not found peer {0}'.format(peer.router_id))
peer_addr = self.peers[peer]['neigh_addr'].split('/')[0]
gobgp = '/go/bin/gobgp'
cmd = 'docker exec {0} {1} -j neighbor {2}'.format(self.name,
gobgp,
peer_addr)
output = local(cmd, capture=True)
return json.loads(output)['info']['bgp_state']
def create_config(self):
config = {'Global': {'As': self.asn, 'RouterId': self.router_id}}
for peer, info in self.peers.iteritems():
if self.asn == peer.asn:
peer_type = self.PEER_TYPE_INTERNAL
else:
peer_type = self.PEER_TYPE_EXTERNAL
afi_safi_list = []
version = netaddr.IPNetwork(info['neigh_addr']).version
if version == 4:
afi_safi_list.append({'AfiSafiName': 'ipv4-unicast'})
elif version == 6:
afi_safi_list.append({'AfiSafiName': 'ipv6-unicast'})
else:
Exception('invalid ip address version. {0}'.format(version))
if info['evpn']:
afi_safi_list.append({'AfiSafiName': 'l2vpn-evpn'})
afi_safi_list.append({'AfiSafiName': 'encap'})
afi_safi_list.append({'AfiSafiName': 'rtc'})
n = {'NeighborAddress': info['neigh_addr'].split('/')[0],
'PeerAs': peer.asn,
'AuthPassword': info['passwd'],
'PeerType': peer_type,
'AfiSafiList': afi_safi_list}
if info['passive']:
n['TransportOptions'] = {'PassiveMode': True}
if info['is_rs_client']:
n['RouteServer'] = {'RouteServerClient': True}
if info['is_rr_client']:
clusterId = info['cluster_id']
n['RouteReflector'] = {'RouteReflectorClient': True,
'RouteReflectorClusterId': clusterId}
if 'NeighborList' not in config:
config['NeighborList'] = []
config['NeighborList'].append(n)
with open('{0}/gobgpd.conf'.format(self.config_dir), 'w') as f:
print colors.yellow('[{0}\'s new config]'.format(self.name))
print colors.yellow(indent(toml.dumps(config)))
f.write(toml.dumps(config))
def reload_config(self):
cmd = 'docker exec {0} /usr/bin/pkill gobgpd -SIGHUP'.format(self.name)
local(cmd, capture=True)
for v in self.routes.itervalues():
cmd = 'docker exec {0} gobgp global '\
'rib add {1} -a {2}'.format(self.name, v['prefix'], v['rf'])
local(cmd, capture=True)
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