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authorChristian Poessinger <christian@poessinger.com>2020-06-01 20:17:01 +0200
committerChristian Poessinger <christian@poessinger.com>2020-06-01 20:17:01 +0200
commit8c125db846c8875d0401fca9283de187e28ef556 (patch)
treee656c8926878bfe12f7b0095b67c71b3fee18684 /src
parentfc5542b4011befa746f9aa0c081fdab5ea390a3b (diff)
downloadvyos-1x-8c125db846c8875d0401fca9283de187e28ef556.tar.gz
vyos-1x-8c125db846c8875d0401fca9283de187e28ef556.zip
bgp: T2387: proof-of-concept using get_config_dict()
Diffstat (limited to 'src')
-rwxr-xr-xsrc/conf_mode/protocols_bgp.py102
1 files changed, 102 insertions, 0 deletions
diff --git a/src/conf_mode/protocols_bgp.py b/src/conf_mode/protocols_bgp.py
new file mode 100755
index 000000000..3aa76d866
--- /dev/null
+++ b/src/conf_mode/protocols_bgp.py
@@ -0,0 +1,102 @@
+#!/usr/bin/env python3
+#
+# Copyright (C) 2020 VyOS maintainers and contributors
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License version 2 or later as
+# published by the Free Software Foundation.
+#
+# This program 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 General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+import jmespath
+
+from copy import deepcopy
+from sys import exit
+
+from vyos.config import Config
+from vyos.template import render
+from vyos import ConfigError, airbag
+airbag.enable()
+
+config_file = r'/tmp/bgp.frr'
+
+default_config_data = {
+ 'as_number': ''
+}
+
+def get_config():
+ bgp = deepcopy(default_config_data)
+ conf = Config()
+
+ # this lives in the "nbgp" tree until we switch over
+ base = ['protocols', 'nbgp']
+ if not conf.exists(base):
+ return None
+
+ bgp = deepcopy(default_config_data)
+ # Get full BGP configuration as dictionary - output the configuration for development
+ #
+ # vyos@vyos# commit
+ # [ protocols nbgp 65000 ]
+ # {'nbgp': {'65000': {'address-family': {'ipv4-unicast': {'aggregate-address': {'1.1.0.0/16': {},
+ # '2.2.2.0/24': {}}},
+ # 'ipv6-unicast': {'aggregate-address': {'2001:db8::/32': {}}}},
+ # 'neighbor': {'192.0.2.1': {'password': 'foo',
+ # 'remote-as': '100'}}}}}
+ #
+ tmp = conf.get_config_dict(base)
+
+ # extract base key from dict as this is our AS number
+ bgp['as_number'] = jmespath.search('nbgp | keys(@) [0]', tmp)
+
+ # adjust level of dictionary returned by get_config_dict()
+ # by using jmesgpath and update dictionary
+ bgp.update(jmespath.search('nbgp.* | [0]', tmp))
+
+ from pprint import pprint
+ pprint(bgp)
+ # resulting in e.g.
+ # vyos@vyos# commit
+ # [ protocols nbgp 65000 ]
+ # {'address-family': {'ipv4-unicast': {'aggregate-address': {'1.1.0.0/16': {},
+ # '2.2.2.0/24': {}}},
+ # 'ipv6-unicast': {'aggregate-address': {'2001:db8::/32': {}}}},
+ # 'as_number': '65000',
+ # 'neighbor': {'192.0.2.1': {'password': 'foo', 'remote-as': '100'}},
+ # 'timers': {'holdtime': '5'}}
+
+ return bgp
+
+def verify(bgp):
+ # bail out early - looks like removal from running config
+ if not bgp:
+ return None
+
+ return None
+
+def generate(bgp):
+ # bail out early - looks like removal from running config
+ if not bgp:
+ return None
+
+ render(config_file, 'frr/bgp.frr.tmpl', bgp)
+ return None
+
+def apply(bgp):
+ return None
+
+if __name__ == '__main__':
+ try:
+ c = get_config()
+ verify(c)
+ generate(c)
+ apply(c)
+ except ConfigError as e:
+ print(e)
+ exit(1)