feat: draft version

db_repo/versions/002_unique_repositories_index.py

@@ -0,0 +1,24 @@
+from sqlalchemy import Table, MetaData, Index
+
+meta = MetaData()
+
+
+def _get_indices(meta):
+    meta.reflect()
+    Users = Table("users", meta, autoload=True, autoload_with=meta.bind)
+    Repositories = Table("users", meta, autoload=True, autoload_with=meta.bind)
+    return [
+        Index("repositories_name_unique_id", Users.c.id, Repositories.c.name, unique=True)
+    ]
+
+
+def upgrade(migrate_engine):
+    meta.bind = migrate_engine
+    for idx in _get_indices(meta):
+        idx.create()
+
+
+def downgrade(migrate_engine):
+    meta.bind = migrate_engine
+    for idx in _get_indices(meta):
+        idx.drop()