xiangqinxiaochengxu/backend/alembic/env.py
2026-05-16 19:01:44 +08:00

65 lines
1.7 KiB
Python

from logging.config import fileConfig
from pathlib import Path
import sys
from alembic import context
from sqlalchemy import pool
from sqlalchemy.engine import Connection
from sqlalchemy.ext.asyncio import async_engine_from_config
# Ensure `app` can be imported when alembic is launched from different shells/process managers.
ROOT_DIR = Path(__file__).resolve().parents[1]
if str(ROOT_DIR) not in sys.path:
sys.path.insert(0, str(ROOT_DIR))
from app.config import settings
from app.database import Base
config = context.config
config.set_main_option("sqlalchemy.url", settings.database_url)
if config.config_file_name is not None:
fileConfig(config.config_file_name)
target_metadata = Base.metadata
def run_migrations_offline() -> None:
context.configure(
url=settings.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_migrations_online() -> None:
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()
if context.is_offline_mode():
run_migrations_offline()
else:
import asyncio
asyncio.run(run_migrations_online())