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-rwxr-xr-xsrc/conf_mode/protocols_bfd.py54
1 files changed, 43 insertions, 11 deletions
diff --git a/src/conf_mode/protocols_bfd.py b/src/conf_mode/protocols_bfd.py
index 51af67ff6..08d3991ff 100755
--- a/src/conf_mode/protocols_bfd.py
+++ b/src/conf_mode/protocols_bfd.py
@@ -16,31 +16,56 @@
#
import sys
+import jinja2
import copy
+import os
import vyos.validate
from vyos import ConfigError
from vyos.config import Config
+config_file = r'/tmp/bfd.frr'
+
+# Please be careful if you edit the template.
+config_tmpl = """
+!
+bfd
+{% for peer in old_peers -%}
+ no peer {{ peer }}
+{% endfor -%}
+!
+{% for peer in new_peers -%}
+ peer {{ peer.remote }}{% if peer.local_address %} local-address {{ peer.local_address }}{% endif %}{% if peer.local_interface %} interface {{ peer.local_interface }}{% endif %}
+ {% if not peer.shutdown %}no {% endif %}shutdown
+{% endfor -%}
+!
+"""
+
default_config_data = {
- 'peers': []
+ 'new_peers': [],
+ 'old_peers' : []
}
def get_config():
bfd = copy.deepcopy(default_config_data)
conf = Config()
- if not conf.exists('protocols bfd'):
+ if not (conf.exists('protocols bfd') or conf.exists_effective('protocols bfd')):
return None
else:
conf.set_level('protocols bfd')
+ # as we have to use vtysh to talk to FRR we also need to know
+ # which peers are gone due to a config removal - thus we read in
+ # all peers (active or to delete)
+ bfd['old_peers'] = conf.list_effective_nodes('peer')
+
for peer in conf.list_nodes('peer'):
conf.set_level('protocols bfd peer {0}'.format(peer))
bfd_peer = {
'remote': peer,
'shutdown': False,
- 'local-interface': '',
- 'local-address': '',
+ 'local_interface': '',
+ 'local_address': '',
}
# Check if individual peer is disabled
@@ -49,13 +74,13 @@ def get_config():
# Check if peer has a local source interface configured
if conf.exists('local-interface'):
- bfd_peer['local-interface'] = conf.return_value('local-interface')
+ bfd_peer['local_interface'] = conf.return_value('local-interface')
# Check if peer has a local source address configured - this is mandatory for IPv6
if conf.exists('local-address'):
- bfd_peer['local-address'] = conf.return_value('local-address')
+ bfd_peer['local_address'] = conf.return_value('local-address')
- bfd['peers'].append(bfd_peer)
+ bfd['new_peers'].append(bfd_peer)
return bfd
@@ -63,17 +88,16 @@ def verify(bfd):
if bfd is None:
return None
- for peer in bfd['peers']:
+ for peer in bfd['new_peers']:
# Bail out early if peer is shutdown
if peer['shutdown']:
continue
# IPv6 peers require an explicit local address/interface combination
if vyos.validate.is_ipv6(peer['remote']):
- if not (peer['local-interface'] and peer['local-address']):
+ if not (peer['local_interface'] and peer['local_address']):
raise ConfigError("BFD IPv6 peers require explicit local address/interface setting")
-
return None
def generate(bfd):
@@ -86,7 +110,15 @@ def apply(bfd):
if bfd is None:
return None
- print(bfd)
+ tmpl = jinja2.Template(config_tmpl)
+ config_text = tmpl.render(bfd)
+ with open(config_file, 'w') as f:
+ f.write(config_text)
+
+ os.system("sudo vtysh -d bfdd -f " + config_file)
+ if os.path.exists(config_file):
+ os.remove(config_file)
+
return None
if __name__ == '__main__':