vrf: T2450: provide full protocol support in XML and Python with new CLI

1 files changed, 112 insertions, 0 deletions

diff --git a/src/migration-scripts/vrf/0-to-1 b/src/migration-scripts/vrf/0-to-1
new file mode 100755
index 000000000..29b2fab74
--- /dev/null
+++ b/src/migration-scripts/vrf/0-to-1
@@ -0,0 +1,112 @@
+#!/usr/bin/env python3
+#
+# Copyright (C) 2021 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/>.
+
+# - T2450: drop interface-route and interface-route6 from "protocols vrf"
+
+from sys import argv
+from sys import exit
+from vyos.configtree import ConfigTree
+
+if (len(argv) < 2):
+    print("Must specify file name!")
+    exit(1)
+
+file_name = argv[1]
+
+with open(file_name, 'r') as f:
+    config_file = f.read()
+
+base = ['protocols', 'vrf']
+config = ConfigTree(config_file)
+
+if not config.exists(base):
+    # Nothing to do
+    exit(0)
+
+for vrf in config.list_nodes(base):
+    static_base = base + [vrf, 'static']
+    if not config.exists(static_base):
+        continue
+
+    #
+    # Migrate interface-route into route
+    #
+    interface_route_path = static_base + ['interface-route']
+    if config.exists(interface_route_path):
+        for route in config.list_nodes(interface_route_path):
+            interface = config.list_nodes(interface_route_path + [route, 'next-hop-interface'])
+
+            tmp = interface_route_path + [route, 'next-hop-interface']
+            for interface in config.list_nodes(tmp):
+                new_base = static_base + ['route', route, 'interface']
+                config.set(new_base)
+                config.set_tag(new_base)
+                config.copy(tmp + [interface], new_base + [interface])
+
+        config.delete(interface_route_path)
+
+    #
+    # Migrate interface-route6 into route6
+    #
+    interface_route_path = static_base + ['interface-route6']
+    if config.exists(interface_route_path):
+        for route in config.list_nodes(interface_route_path):
+            interface = config.list_nodes(interface_route_path + [route, 'next-hop-interface'])
+
+            tmp = interface_route_path + [route, 'next-hop-interface']
+            for interface in config.list_nodes(tmp):
+                new_base = static_base + ['route6', route, 'interface']
+                config.set(new_base)
+                config.set_tag(new_base)
+                config.copy(tmp + [interface], new_base + [interface])
+
+        config.delete(interface_route_path)
+
+    #
+    # Cleanup nodes inside route
+    #
+    route_path = static_base + ['route']
+    if config.exists(route_path):
+        for route in config.list_nodes(route_path):
+            next_hop = route_path + [route, 'next-hop']
+            if config.exists(next_hop):
+                for gateway in config.list_nodes(next_hop):
+                    interface_path = next_hop + [gateway, 'next-hop-interface']
+                    if config.exists(interface_path):
+                        config.rename(interface_path, 'interface')
+                    vrf_path = next_hop + [gateway, 'next-hop-vrf']
+                    if config.exists(vrf_path):
+                        config.rename(vrf_path, 'vrf')
+
+    #
+    # Cleanup nodes inside route6
+    #
+    route_path = static_base + ['route6']
+    if config.exists(route_path):
+        for route in config.list_nodes(route_path):
+            next_hop = route_path + [route, 'next-hop']
+            if config.exists(next_hop):
+                for gateway in config.list_nodes(next_hop):
+                    vrf_path = next_hop + [gateway, 'next-hop-vrf']
+                    if config.exists(vrf_path):
+                        config.rename(vrf_path, 'vrf')
+
+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))
+    exit(1)