Initial curated RAGcore source from c16667f0c9397e2bfc8dd0255b114fba23c8d05e

alembic/env.py

@@ -0,0 +1,73 @@
+"""Alembic environment using the application's async PostgreSQL settings."""
+
+from __future__ import annotations
+
+import asyncio
+import selectors
+import sys
+
+from alembic import context
+from sqlalchemy import pool
+from sqlalchemy.engine import Connection
+from sqlalchemy.ext.asyncio import async_engine_from_config
+
+from ragcore.config import get_settings
+
+config = context.config
+target_metadata = None
+
+
+def _database_url() -> str:
+    return get_settings().database_url
+
+
+def _set_database_url() -> None:
+    config.set_main_option("sqlalchemy.url", _database_url().replace("%", "%%"))
+
+
+def run_migrations_offline() -> None:
+    """Run migrations without creating a database connection."""
+
+    _set_database_url()
+    context.configure(
+        url=_database_url(),
+        target_metadata=target_metadata,
+        literal_binds=True,
+        dialect_opts={"paramstyle": "named"},
+    )
+    with context.begin_transaction():
+        context.run_migrations()
+
+
+def do_run_migrations(connection: Connection) -> None:
+    context.configure(connection=connection, target_metadata=target_metadata)
+    with context.begin_transaction():
+        context.run_migrations()
+
+
+async def run_async_migrations() -> None:
+    _set_database_url()
+    connectable = async_engine_from_config(
+        config.get_section(config.config_ini_section, {}),
+        prefix="sqlalchemy.",
+        poolclass=pool.NullPool,
+    )
+    async with connectable.connect() as connection:
+        await connection.run_sync(do_run_migrations)
+    await connectable.dispose()
+
+
+def run_migrations_online() -> None:
+    if sys.platform == "win32":
+        asyncio.run(
+            run_async_migrations(),
+            loop_factory=lambda: asyncio.SelectorEventLoop(selectors.SelectSelector()),
+        )
+    else:
+        asyncio.run(run_async_migrations())
+
+
+if context.is_offline_mode():
+    run_migrations_offline()
+else:
+    run_migrations_online()