Initial extraction from monorepo

alembic/env.py

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+import asyncio
+import os
+from logging.config import fileConfig
+
+from sqlalchemy.engine import Connection
+from sqlalchemy.ext.asyncio import async_engine_from_config
+
+from alembic import context
+from hmrc_sync.db import SCHEMA_NAME, Base
+
+config = context.config
+if config.config_file_name is not None:
+    fileConfig(config.config_file_name)
+
+db_url = os.environ.get("DB_CONNECTION_STRING")
+if db_url:
+    config.set_main_option("sqlalchemy.url", db_url)
+
+target_metadata = Base.metadata
+
+
+def do_run_migrations(connection: Connection) -> None:
+    connection.exec_driver_sql(f'CREATE SCHEMA IF NOT EXISTS "{SCHEMA_NAME}"')
+    context.configure(
+        connection=connection,
+        target_metadata=target_metadata,
+        version_table_schema=SCHEMA_NAME,
+        include_schemas=True,
+    )
+    with context.begin_transaction():
+        context.run_migrations()
+
+
+async def run_migrations_online() -> None:
+    configuration = config.get_section(config.config_ini_section, {})
+    connectable = async_engine_from_config(configuration, prefix="sqlalchemy.")
+    async with connectable.connect() as connection:
+        await connection.run_sync(do_run_migrations)
+        await connection.commit()
+    await connectable.dispose()
+
+
+def run_migrations_offline() -> None:
+    context.configure(
+        url=config.get_main_option("sqlalchemy.url"),
+        target_metadata=target_metadata,
+        literal_binds=True,
+        version_table_schema=SCHEMA_NAME,
+        include_schemas=True,
+        dialect_opts={"paramstyle": "named"},
+    )
+    with context.begin_transaction():
+        context.run_migrations()
+
+
+if context.is_offline_mode():
+    run_migrations_offline()
+else:
+    asyncio.run(run_migrations_online())