vrf: T31: initial support for a VRF backend in XML/Python

This is a work in progress to complete T31 whoever thought it was less than
1 hour of work was ..... optimistic.

Only VRF vreation and show is supported right now. No interface can be bound
to any one VRF.

1 files changed, 23 insertions, 0 deletions

diff --git a/python/vyos/vrf.py b/python/vyos/vrf.py
new file mode 100644
index 000000000..99e4cb7d1
--- /dev/null
+++ b/python/vyos/vrf.py
@@ -0,0 +1,23 @@
+# Copyright 2020 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/>.
+
+import json
+import subprocess
+
+
+def list_vrfs():
+    command = 'ip -j -br link show type vrf'
+    answer = json.loads(subprocess.check_output(command.split()).decode())
+    return [_ for _ in answer if _]