Add a column for uuid to aggregate_hosts

Related to blueprint generic-resource-pools

Change-Id: Ia834f9597c72cdd0bd244f0929fc137e65433335

nova/db/sqlalchemy/migrate_repo/versions/317_add_aggregate_uuid.py

@@ -0,0 +1,32 @@
+#    Licensed under the Apache License, Version 2.0 (the "License"); you may
+#    not use this file except in compliance with the License. You may obtain
+#    a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+#    Unless required by applicable law or agreed to in writing, software
+#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+#    License for the specific language governing permissions and limitations
+#    under the License.
+"""Database migrations for resource-providers."""
+
+from sqlalchemy import Column
+from sqlalchemy import Index
+from sqlalchemy import MetaData
+from sqlalchemy import String
+from sqlalchemy import Table
+
+
+def upgrade(migrate_engine):
+    meta = MetaData()
+    meta.bind = migrate_engine
+
+    for table_prefix in ('', 'shadow_'):
+        uuid_column = Column('uuid', String(36))
+        aggregates = Table('%saggregates' % table_prefix, meta)
+        if not hasattr(aggregates.c, 'uuid'):
+            aggregates.create_column(uuid_column)
+            if not table_prefix:
+                index = Index('aggregate_uuid_idx', aggregates.c.uuid)
+                index.create()