Add prune-database command

This adds a zuul-admin command which allows operators to delete old
database entries.

Change-Id: I4e277a07394aa4852a563f4c9cdc39b5801ab4ba

1 files changed, 47 insertions, 0 deletions

diff --git a/zuul/driver/sql/alembic/versions/c7467b642498_buildset_updated.py b/zuul/driver/sql/alembic/versions/c7467b642498_buildset_updated.py
new file mode 100644
index 000000000..abfba7247
--- /dev/null
+++ b/zuul/driver/sql/alembic/versions/c7467b642498_buildset_updated.py
@@ -0,0 +1,47 @@
+# 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.
+
+"""buildset_updated
+
+Revision ID: c7467b642498
+Revises: 4647def24b32
+Create Date: 2022-05-28 16:21:50.035877
+
+"""
+
+# revision identifiers, used by Alembic.
+revision = 'c7467b642498'
+down_revision = '4647def24b32'
+branch_labels = None
+depends_on = None
+
+from alembic import op
+import sqlalchemy as sa
+
+
+def upgrade(table_prefix=''):
+    op.add_column(
+        table_prefix + "zuul_buildset", sa.Column('updated', sa.DateTime))
+
+    connection = op.get_bind()
+    connection.execute(
+        """
+        UPDATE {buildset_table}
+          SET updated=greatest(
+            coalesce(first_build_start_time, '1970-01-01 00:00:00'),
+            coalesce(last_build_end_time, '1970-01-01 00:00:00'),
+            coalesce(event_timestamp, '1970-01-01 00:00:00'))
+        """.format(buildset_table=table_prefix + "zuul_buildset"))
+
+
+def downgrade():
+    raise Exception("Downgrades not supported")