1 files changed, 85 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..38f2bd8f5
--- /dev/null
+++ b/src/migration-scripts/interfaces/0-to-1
@@ -0,0 +1,85 @@
+#!/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
+
+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
+        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
+        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 intf in config.list_nodes(['interfaces', type]):
+            # check if bridge-group exists
+            if config.exists(['interfaces', type, intf, 'bridge-group']):
+                bridge = config.return_value(['interfaces', type, intf, 'bridge-group', '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
+                if config.exists(['interfaces', type, intf, 'bridge-group', 'cost']):
+                    cost = config.return_value(['interfaces', type, intf, 'bridge-group', 'cost'])
+                    # set new node
+                    config.set(base + [bridge, 'member', 'interface', intf, 'cost'], value=cost)
+
+                if config.exists(['interfaces', type, intf, 'bridge-group', 'priority']):
+                    priority = config.return_value(['interfaces', type, intf, 'bridge-group', '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(['interfaces', type, intf, 'bridge-group'])
+
+        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)