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#!/usr/bin/env python3
# Change syntax of bridge interface
# - move interface based bridge-group to actual bridge (de-nest)
# - make stp and igmp-snooping nodes valueless
# https://phabricator.vyos.net/T1556
import sys
from vyos.configtree import ConfigTree
def migrate_bridge(config, tree, intf):
# check if bridge-group exists
tree_bridge = tree + ['bridge-group']
if config.exists(tree_bridge):
bridge = config.return_value(tree_bridge + ['bridge'])
# create new bridge member interface
config.set(base + [bridge, 'member', 'interface', intf])
# format as tag node to avoid loading problems
config.set_tag(base + [bridge, 'member', 'interface'])
# cost: migrate if configured
tree_cost = tree + ['bridge-group', 'cost']
if config.exists(tree_cost):
cost = config.return_value(tree_cost)
# set new node
config.set(base + [bridge, 'member', 'interface', intf, 'cost'], value=cost)
# priority: migrate if configured
tree_priority = tree + ['bridge-group', 'priority']
if config.exists(tree_priority):
priority = config.return_value(tree_priority)
# set new node
config.set(base + [bridge, 'member', 'interface', intf, 'priority'], value=priority)
# Delete the old bridge-group assigned to an interface
config.delete(tree_bridge)
if __name__ == '__main__':
if (len(sys.argv) < 1):
print("Must specify file name!")
sys.exit(1)
file_name = sys.argv[1]
with open(file_name, 'r') as f:
config_file = f.read()
config = ConfigTree(config_file)
base = ['interfaces', 'bridge']
if not config.exists(['interfaces', 'bridge']):
# Nothing to do
sys.exit(0)
else:
#
# make stp and igmp-snooping nodes valueless
#
for br in config.list_nodes(base):
# STP: check if enabled
if config.exists(base + [br, 'stp']):
stp_val = config.return_value(base + [br, 'stp'])
# STP: delete node with old syntax
config.delete(base + [br, 'stp'])
# STP: set new node - if enabled
if stp_val == "true":
config.set(base + [br, 'stp'], value=None)
# igmp-snooping: check if enabled
if config.exists(base + [br, 'igmp-snooping', 'querier']):
igmp_val = config.return_value(base + [br, 'igmp-snooping', 'querier'])
# igmp-snooping: delete node with old syntax
config.delete(base + [br, 'igmp-snooping', 'querier'])
# igmp-snooping: set new node - if enabled
if igmp_val == "enable":
config.set(base + [br, 'igmp', 'querier'], value=None)
#
# move interface based bridge-group to actual bridge (de-nest)
#
bridge_types = ['bonding', 'ethernet', 'l2tpv3', 'openvpn', 'vxlan', 'wireless']
for type in bridge_types:
if not config.exists(['interfaces', type]):
continue
for interface in config.list_nodes(['interfaces', type]):
# check if bridge-group exists
bridge_group = ['interfaces', type, interface]
if config.exists(bridge_group + ['bridge-group']):
migrate_bridge(config, bridge_group, interface)
# We also need to migrate VLAN interfaces
vlan_base = ['interfaces', type, interface, 'vif']
if config.exists(vlan_base):
for vlan in config.list_nodes(vlan_base):
intf = "{}.{}".format(interface, vlan)
migrate_bridge(config, vlan_base + [vlan], intf)
# And then we have service VLANs (vif-s) interfaces
vlan_base = ['interfaces', type, interface, 'vif-s']
if config.exists(vlan_base):
for vif_s in config.list_nodes(vlan_base):
intf = "{}.{}".format(interface, vif_s)
migrate_bridge(config, vlan_base + [vif_s], intf)
# Every service VLAN can have multiple customer VLANs (vif-c)
vlan_c = ['interfaces', type, interface, 'vif-s', vif_s, 'vif-c']
if config.exists(vlan_c):
for vif_c in config.list_nodes(vlan_c):
intf = "{}.{}.{}".format(interface, vif_s, vif_c)
migrate_bridge(config, vlan_c + [vif_c], intf)
try:
with open(file_name, 'w') as f:
f.write(config.to_string())
except OSError as e:
print("Failed to save the modified config: {}".format(e))
sys.exit(1)

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