1 files changed, 118 insertions, 0 deletions
diff --git a/src/migration-scripts/interfaces/0-to-1 b/src/migration-scripts/interfaces/0-to-1
new file mode 100755
index 000000000..ee4d6b82c
--- /dev/null
+++ b/src/migration-scripts/interfaces/0-to-1
@@ -0,0 +1,118 @@
+#!/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(base):
+        # 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)