pithos: Database migration for "available" attribute.

snf-pithos-backend/pithos/backends/lib/sqlalchemy/alembic/versions/e6edec1b499_add_columns_for_snap.py

+"""Add columns for snapshots
+
+Revision ID: e6edec1b499
+Revises: 4451e165da19
+Create Date: 2014-01-27 15:33:21.058484
+
+"""
+
+# revision identifiers, used by Alembic.
+revision = 'e6edec1b499'
+down_revision = '4451e165da19'
+
+from alembic import op
+import sqlalchemy as sa
+
+
+def upgrade():
+    op.add_column('versions',
+                  sa.Column('available', sa.Boolean, nullable=False,
+                            server_default='true'))
+    op.add_column('versions',
+                  sa.Column('map_check_timestamp',
+                            sa.DECIMAL(precision=16, scale=6)))
+
+
+def downgrade():
+    op.drop_column('versions', 'available')
+    op.drop_column('versions', 'map_check_timestamp')