Add owner and timestamp columns to the module_builds table

migrations/versions/1a44272e8b4c_.py

@@ -0,0 +1,41 @@
+"""Adds the owner, time_completed, time_modified, and time_submitted columns to the module_builds table
+
+Revision ID: 1a44272e8b4c
+Revises: a7a553e5ca1d
+Create Date: 2016-08-17 17:00:31.126429
+
+"""
+
+# revision identifiers, used by Alembic.
+revision = '1a44272e8b4c'
+down_revision = 'a7a553e5ca1d'
+
+from alembic import op
+import sqlalchemy as sa
+from datetime import datetime
+
+epoch = datetime.utcfromtimestamp(0).strftime('%Y-%m-%d %H:%M:%S')
+
+
+def upgrade():
+    op.add_column('module_builds', sa.Column('owner', sa.String(), server_default='Unknown User', nullable=False))
+    op.add_column('module_builds', sa.Column('time_completed', sa.DateTime(), nullable=True, server_default=epoch))
+    op.add_column('module_builds', sa.Column('time_modified', sa.DateTime(), nullable=True, server_default=epoch))
+    op.add_column('module_builds', sa.Column('time_submitted', sa.DateTime(), nullable=False, server_default=epoch))
+
+    # Remove migration-only defaults. Using batch_alter_table() recreates the table instead of using ALTER COLUMN
+    # on simplistic DB engines. Thanks SQLite!
+    with op.batch_alter_table('module_builds') as b:
+        b.alter_column('owner', server_default=None)
+        b.alter_column('time_completed', server_default=None)
+        b.alter_column('time_modified', server_default=None)
+        b.alter_column('time_submitted', server_default=None)
+
+
+def downgrade():
+    # Thanks again!
+    with op.batch_alter_table('module_builds') as b:
+        b.drop_column('time_submitted')
+        b.drop_column('time_modified')
+        b.drop_column('time_completed')
+        b.drop_column('owner')