Merge "Migrations for deleted data for previously deleted instances."

1 files changed, 67 insertions, 0 deletions

diff --git a/nova/db/sqlalchemy/migrate_repo/versions/112_update_deleted_instance_data.py b/nova/db/sqlalchemy/migrate_repo/versions/112_update_deleted_instance_data.py
new file mode 100644
index 000000000..24f7f7164
--- /dev/null
+++ b/nova/db/sqlalchemy/migrate_repo/versions/112_update_deleted_instance_data.py
@@ -0,0 +1,67 @@
+# vim: tabstop=4 shiftwidth=4 softtabstop=4
+
+# Copyright 2012 OpenStack LLC.
+# All Rights Reserved.
+#
+#    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.
+
+import datetime
+from sqlalchemy import MetaData, Table
+from sqlalchemy import and_, between
+
+
+TABLES = ('instance_metadata',
+          'instance_system_metadata',
+          'block_device_mapping')
+
+
+def upgrade(migrate_engine):
+    meta = MetaData()
+    meta.bind = migrate_engine
+    instances = Table('instances', meta, autoload=True)
+
+    instance_list = list(instances.select().\
+                        where(instances.c.deleted == True).execute())
+    for table_name in TABLES:
+        table = Table(table_name, meta, autoload=True)
+
+        for instance in instance_list:
+            table.update(
+                (and_(table.c.deleted == True,
+                      table.c.instance_uuid == instance['uuid'],
+                      between(table.c.deleted_at,
+                      instance['deleted_at'] - datetime.timedelta(seconds=2),
+                      instance['deleted_at'] + datetime.timedelta(seconds=2)))
+                ),
+                {table.c.deleted: False,
+                 table.c.deleted_at: None}
+            ).execute()
+
+
+def downgrade(migrate_engine):
+    meta = MetaData()
+    meta.bind = migrate_engine
+    instances = Table('instances', meta, autoload=True)
+
+    instance_list = list(instances.select().\
+                        where(instances.c.deleted == True).execute())
+    for table_name in TABLES:
+        table = Table(table_name, meta, autoload=True)
+        for instance in instance_list:
+            table.update(
+                (and_(table.c.deleted == False,
+                      table.c.instance_uuid == instance['uuid'])
+                ),
+                {table.c.deleted: True,
+                 table.c.deleted_at: instance['deleted_at']}
+            ).execute()