wehub-resource-sync
79 lines
2.1 KiB
Python
79 lines
2.1 KiB
Python
"""Alembic env.py — 支持 async Postgres。"""
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import asyncio
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from logging.config import fileConfig
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from sqlalchemy import pool
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from sqlalchemy.engine import Connection
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from sqlalchemy.ext.asyncio import async_engine_from_config
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from alembic import context
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# Alembic Config
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config = context.config
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if config.config_file_name is not None:
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fileConfig(config.config_file_name)
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# 导入所有模型以注册 metadata
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import sys
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import os
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sys.path.insert(0, os.path.join(os.path.dirname(__file__), "..", "backend"))
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from app.config import get_settings
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from app.models import Task, Event, Thought, Todo # noqa
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from app.db import Base
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target_metadata = Base.metadata
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settings = get_settings()
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# Alembic 默认回退到本地配置，但运行时优先使用 Settings / DATABASE_URL。
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config.set_main_option("sqlalchemy.url", settings.database_url_sync)
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def run_migrations_offline() -> None:
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"""Run migrations in 'offline' mode."""
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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: Connection) -> None:
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context.configure(connection=connection, target_metadata=target_metadata)
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with context.begin_transaction():
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context.run_migrations()
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async def run_async_migrations() -> None:
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"""Run migrations in 'online' mode with async engine."""
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config_section = config.get_section(config.config_ini_section, {})
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config_section["sqlalchemy.url"] = settings.database_url
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connectable = async_engine_from_config(
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config_section,
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prefix="sqlalchemy.",
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poolclass=pool.NullPool,
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)
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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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await connectable.dispose()
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def run_migrations_online() -> None:
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"""Run migrations in 'online' mode."""
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asyncio.run(run_async_migrations())
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if context.is_offline_mode():
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run_migrations_offline()
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else:
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run_migrations_online()
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