67 lines
1.9 KiB
Python
67 lines
1.9 KiB
Python
|
"""Alembic environment.
|
|||
|
|
|
|||
|
|
生产请用 `alembic upgrade head`；开发/测试可让 ``Settings.auto_create_schema`` 调用
|
|||
|
|
``init_db_schema()``。本文件读取 `app.config.settings`，把 asyncpg URL 转为同步
|
|||
|
|
`psycopg` URL 供 Alembic 使用（仅迁移期间）。
|
|||
|
|
"""
|
|||
|
|
|
|||
|
|
from __future__ import annotations
|
|||
|
|
|
|||
|
|
from logging.config import fileConfig
|
|||
|
|
|
|||
|
|
from alembic import context
|
|||
|
|
from sqlalchemy import engine_from_config, pool
|
|||
|
|
|
|||
|
|
from app.config import settings
|
|||
|
|
import app.db.models # noqa: F401 - register ORM tables on Base.metadata
|
|||
|
|
from app.db.base import Base
|
|||
|
|
|
|||
|
|
|
|||
|
|
alembic_config = context.config
|
|||
|
|
|
|||
|
|
if alembic_config.config_file_name is not None:
|
|||
|
|
fileConfig(alembic_config.config_file_name)
|
|||
|
|
|
|||
|
|
target_metadata = Base.metadata
|
|||
|
|
|
|||
|
|
|
|||
|
|
def _sync_database_url() -> str:
|
|||
|
|
"""把 asyncpg URL 转为同步 psycopg2 URL，避免 Alembic 强依赖 async 驱动。"""
|
|||
|
|
url = settings.sqlalchemy_database_url
|
|||
|
|
return url.replace("postgresql+asyncpg://", "postgresql+psycopg://", 1)
|
|||
|
|
|
|||
|
|
|
|||
|
|
def run_migrations_offline() -> None:
|
|||
|
|
context.configure(
|
|||
|
|
url=_sync_database_url(),
|
|||
|
|
target_metadata=target_metadata,
|
|||
|
|
literal_binds=True,
|
|||
|
|
dialect_opts={"paramstyle": "named"},
|
|||
|
|
)
|
|||
|
|
with context.begin_transaction():
|
|||
|
|
context.run_migrations()
|
|||
|
|
|
|||
|
|
|
|||
|
|
def run_migrations_online() -> None:
|
|||
|
|
config_section = alembic_config.get_section(alembic_config.config_ini_section) or {}
|
|||
|
|
config_section["sqlalchemy.url"] = _sync_database_url()
|
|||
|
|
connectable = engine_from_config(
|
|||
|
|
config_section,
|
|||
|
|
prefix="sqlalchemy.",
|
|||
|
|
poolclass=pool.NullPool,
|
|||
|
|
)
|
|||
|
|
with connectable.connect() as connection:
|
|||
|
|
context.configure(
|
|||
|
|
connection=connection,
|
|||
|
|
target_metadata=target_metadata,
|
|||
|
|
compare_type=True,
|
|||
|
|
)
|
|||
|
|
with context.begin_transaction():
|
|||
|
|
context.run_migrations()
|
|||
|
|
|
|||
|
|
|
|||
|
|
if context.is_offline_mode():
|
|||
|
|
run_migrations_offline()
|
|||
|
|
else:
|
|||
|
|
run_migrations_online()
|