Merge "Keep flavor information in system_metadata"

1 files changed, 49 insertions, 0 deletions

diff --git a/nova/db/sqlalchemy/migrate_repo/versions/153_instance_type_in_system_metadata.py b/nova/db/sqlalchemy/migrate_repo/versions/153_instance_type_in_system_metadata.py
new file mode 100644
index 000000000..20e75a6eb
--- /dev/null
+++ b/nova/db/sqlalchemy/migrate_repo/versions/153_instance_type_in_system_metadata.py
@@ -0,0 +1,49 @@
+# Copyright 2013 IBM Corp.
+#
+#    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.
+
+from sqlalchemy import MetaData, select, Table
+
+
+def upgrade(migrate_engine):
+    meta = MetaData()
+    meta.bind = migrate_engine
+    instances = Table('instances', meta, autoload=True)
+    instance_types = Table('instance_types', meta, autoload=True)
+    sys_meta = Table('instance_system_metadata', meta, autoload=True)
+
+    # Taken from nova/compute/api.py
+    instance_type_props = ['id', 'name', 'memory_mb', 'vcpus',
+                           'root_gb', 'ephemeral_gb', 'flavorid',
+                           'swap', 'rxtx_factor', 'vcpu_weight']
+
+    select_columns = [instances.c.uuid]
+    select_columns += [getattr(instance_types.c, name)
+                       for name in instance_type_props]
+
+    q = select(select_columns, from_obj=instances.join(
+            instance_types,
+            instances.c.instance_type_id == instance_types.c.id))
+
+    i = sys_meta.insert()
+    for values in q.execute():
+        for index in range(0, len(instance_type_props)):
+            i.execute({"key": "instance_type_%s" % instance_type_props[index],
+                       "value": str(values[index + 1]),
+                       "instance_uuid": values[0]})
+
+
+def downgrade(migration_engine):
+    # This migration only touches data, and only metadata at that. No need
+    # to go through and delete old metadata items.
+    pass