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# Copyright VyOS maintainers and contributors <maintainers@vyos.io>
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
#
# This library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with this library. If not, see <http://www.gnu.org/licenses/>.
# migrate from pmacct to ipt-NETFLOW:
# Remove 'timeout' subtree, 'buffer-size', 'disable-imt', 'packet-length' and
# 'syslog-facility' from 'system flow-accounting'
#
# Move "system flow-accounting interface" to "system flow-accounting netflow interface"
#
# Remove "system flow-accounting source" and add it to each server
# under "system flow-accounting netflow server SERVER source-address"
from vyos.configtree import ConfigTree
base = ['system', 'flow-accounting']
remove_keys = [
['buffer-size'],
['disable-imt'],
['netflow', 'timeout'],
['packet-length'],
['syslog-facility'],
]
def migrate(config: ConfigTree) -> None:
if not config.exists(base):
# Nothing to do
return
# Remove not needed pmacct fields
for k in remove_keys:
p = base + k
if config.exists(p):
config.delete(p)
# Move "system flow-accounting interface" -> "system flow-accounting netflow interface"
if config.exists(base + ['interface']):
config.copy(base + ['interface'], base + ['netflow', 'interface'])
config.delete(base + ['interface'])
# Remove old "source-address", add it to each server as "source-address"
source_prev_path = base + ['netflow', 'source-address']
if config.exists(source_prev_path):
source_value = config.return_value(source_prev_path)
config.delete(source_prev_path)
# So we loose 'source-address' value if there are no servers
# configured, but it is not valid configuration if there
# is no server, so it shouldn't be a problem
if config.exists(base + ['netflow', 'server']):
path = base + ['netflow', 'server']
for server in config.list_nodes(path):
config.set(path + [server, 'source-address'], source_value)
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