90 lines
2.4 KiB
Python
90 lines
2.4 KiB
Python
from alembic import context
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from sqlalchemy.ext.asyncio import create_async_engine
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from logging.config import fileConfig
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# 导入你的配置
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from config import settings
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# 这是 Alembic 配置对象，提供对 .ini 文件中的值的访问。
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config = context.config
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# 动态设置 sqlalchemy.url
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config.set_main_option("sqlalchemy.url", (
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settings.DB_URL or
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'{scheme}://{user}:{password}@{host}:{port}/{db}'.format(
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scheme=settings.DB_SCHEMA,
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user=settings.DB_USER,
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password=settings.DB_PASSWORD,
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host=settings.DB_HOST,
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port=settings.DB_PORT,
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db=settings.DB_NAME,
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)
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))
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# 设置 target_metadata
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from core.db.models import BaseModel # 假设你的 SQLAlchemy 模型在 models.py 中
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target_metadata = BaseModel.metadata
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def run_migrations_offline() -> None:
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"""Run migrations in 'offline' mode.
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This configures the context with just a URL
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and not an Engine, though an Engine is acceptable
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here as well. By skipping the Engine creation
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we don't even need a DBAPI to be available.
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Calls to context.execute() here emit the given string to the
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script output.
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"""
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url = config.get_main_option("sqlalchemy.url")
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context.configure(
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url=url,
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target_metadata=target_metadata,
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literal_binds=True,
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dialect_opts={"paramstyle": "named"},
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)
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with context.begin_transaction():
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context.run_migrations()
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def do_run_migrations(connection):
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context.configure(
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connection=connection,
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target_metadata=target_metadata,
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compare_type=True,
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include_schemas=True,
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)
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with context.begin_transaction():
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context.run_migrations()
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async def run_migrations_online():
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# 创建异步引擎
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connectable = create_async_engine(config.get_main_option("sqlalchemy.url"))
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async with connectable.connect() as connection:
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await connection.run_sync(do_run_migrations)
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if context.is_offline_mode():
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# 离线模式（同步）
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run_migrations_offline()
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else:
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import asyncio
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# 在线模式（异步）
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# 检查是否已经有事件循环
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try:
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loop = asyncio.get_event_loop()
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except RuntimeError:
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loop = asyncio.new_event_loop()
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asyncio.set_event_loop(loop)
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# 运行迁移
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loop.run_until_complete(run_migrations_online())
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