43 lines
1.5 KiB
Plaintext
43 lines
1.5 KiB
Plaintext
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#!/usr/bin/env python
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import sys
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import redis
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import subprocess
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import syslog
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from swsssdk import ConfigDBConnector
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# Returns BGP ASN as a string
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def _get_bgp_asn_from_minigraph():
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# Get BGP ASN from minigraph
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proc = subprocess.Popen(
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['sonic-cfggen', '-m', '/etc/sonic/minigraph.xml', '-v', 'minigraph_bgp_asn'],
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stdout=subprocess.PIPE,
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shell=False,
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stderr=subprocess.STDOUT)
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stdout = proc.communicate()[0]
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proc.wait()
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return stdout.rstrip('\n')
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def bgp_config(asn, ip, config):
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syslog.syslog(syslog.LOG_INFO, '[bgp cfgd] value for {} changed to {}'.format(ip, config))
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# Currently dynamic config is supported only for bgp admin status
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if config.has_key('admin_status'):
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command_mod = 'no ' if config['admin_status'] == 'up' else ''
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command = "vtysh -c 'configure terminal' -c 'router bgp {}' -c '{}neighbor {} shutdown'".format(asn, command_mod, ip)
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p = subprocess.Popen(command, shell=True, stdout=subprocess.PIPE)
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stdout = p.communicate()[0]
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p.wait()
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if p.returncode != 0:
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syslog.syslog(syslog.LOG_ERR, '[bgp cfgd] command execution returned {}. Command: "{}", stdout: "{}"'.format(p.returncode, command, stdout))
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def main():
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sub = ConfigDBConnector()
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bgp_asn = _get_bgp_asn_from_minigraph()
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handler = lambda table, key, data: bgp_config(bgp_asn, key, data)
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sub.subscribe('BGP_NEIGHBOR', handler)
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sub.connect()
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sub.listen()
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main()
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