27 lines
866 B
Python
27 lines
866 B
Python
from alembic import context
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from sqlalchemy import create_engine, pool
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from app import models # noqa: F401
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from app.core.config import settings
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from app.db.session import Base
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config = context.config
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def run_migrations(connection):
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context.configure(connection=connection, target_metadata=Base.metadata, compare_type=True)
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with context.begin_transaction():
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context.run_migrations()
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if context.is_offline_mode():
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raise RuntimeError("迁移需要连接数据库，以检查并保留已有表；请使用 alembic upgrade head")
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elif config.attributes.get("connection") is not None:
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run_migrations(config.attributes["connection"])
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else:
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engine = create_engine(
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settings.database_url, poolclass=pool.NullPool, connect_args={"connect_timeout": 5}
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)
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with engine.connect() as connection:
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run_migrations(connection)
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