ovs-xapi-sync: Cache nicira-bridge-id in ovs-xapi-sync.

[sliver-openvswitch.git] / xenserver / usr_share_openvswitch_scripts_ovs-xapi-sync

diff --git a/xenserver/usr_share_openvswitch_scripts_ovs-xapi-sync b/xenserver/usr_share_openvswitch_scripts_ovs-xapi-sync
index 0ffccc2..585a894 100755 (executable)
--- a/xenserver/usr_share_openvswitch_scripts_ovs-xapi-sync
+++ b/xenserver/usr_share_openvswitch_scripts_ovs-xapi-sync
@@ -36,7 +36,6 @@ from ovs.db import types
 import ovs.daemon
 import ovs.db.idl
 
-root_prefix = ''                # Prefix for absolute file names, for testing.
 vlog = ovs.vlog.Vlog("ovs-xapi-sync")
 session = None
 force_run = False
@@ -193,14 +192,6 @@ def update_in_band_mgmt(row):
         row.other_config = other_config
 
 
-def update_bridge_id(row):
-    id_ = get_bridge_id(row.name, row.external_ids.get("xs-network-uuids"))
-    if not id_:
-        return
-
-    set_external_id(row, "bridge-id", id_.split(";")[0])
-
-
 def keep_table_columns(schema, table_name, columns):
     table = schema.tables.get(table_name)
     if not table:
@@ -239,7 +230,7 @@ def main():
     parser = argparse.ArgumentParser()
     parser.add_argument("database", metavar="DATABASE",
             help="A socket on which ovsdb-server is listening.")
-    parser.add_argument("--root-prefix", metavar="DIR",
+    parser.add_argument("--root-prefix", metavar="DIR", default='',
                         help="Use DIR as alternate root directory"
                         " (for testing).")
 
@@ -249,10 +240,6 @@ def main():
     ovs.vlog.handle_args(args)
     ovs.daemon.handle_args(args)
 
-    global root_prefix
-    if args.root_prefix:
-        root_prefix = args.root_prefix
-
     remote = args.database
     schema_file = "%s/vswitch.ovsschema" % ovs.dirs.PKGDATADIR
     schema = ovs.db.schema.DbSchema.from_json(ovs.json.from_file(schema_file))
@@ -263,13 +250,13 @@ def main():
 
     # This daemon is usually started before XAPI, but to complete our
     # tasks, we need it.  Wait here until it's up.
-    cookie_file = root_prefix + "/var/run/xapi_init_complete.cookie"
+    cookie_file = args.root_prefix + "/var/run/xapi_init_complete.cookie"
     while not os.path.exists(cookie_file):
         time.sleep(1)
 
     signal.signal(signal.SIGHUP, handler)
 
-    bridges = {}                # Map from bridge name to xs_network_uuids
+    bridges = {}                # Map from bridge name to nicira-bridge-id
     iface_ids = {}              # Map from xs-vif-uuid to iface-id
     vm_ids = {}                 # Map from xs-vm-uuid to vm-id
     seqno = idl.change_seqno    # Sequence number when we last processed the db
@@ -293,15 +280,22 @@ def main():
 
         new_bridges = {}
         for row in idl.tables["Bridge"].rows.itervalues():
-            old_xnu = bridges.get(row.name)
-            new_xnu = row.external_ids.get("xs-network-uuids", "")
-            if old_xnu is None:
+            if row.name in bridges:
+                nbd = bridges[row.name]
+            else:
                 # New bridge.
                 update_fail_mode(row)
                 update_in_band_mgmt(row)
+                nbd = get_bridge_id(row.name)
+
+            bridge_id = nbd
+            if bridge_id is None:
+                bridge_id = row.external_ids.get("xs-network-uuids")
+
+            if bridge_id is not None:
+                set_external_id(row, "bridge-id", bridge_id.split(";")[0])
 
-            update_bridge_id(row)
-            new_bridges[row.name] = new_xnu
+            new_bridges[row.name] = nbd
         bridges = new_bridges
 
         iface_by_name = {}