128 lines
3.4 KiB
Python
128 lines
3.4 KiB
Python
from __future__ import annotations
|
|
|
|
import asyncio
|
|
import os
|
|
from decimal import Decimal, InvalidOperation
|
|
from logging.config import fileConfig
|
|
from typing import Any
|
|
|
|
from alembic import context
|
|
from sqlalchemy import Connection, pool
|
|
from sqlalchemy.ext.asyncio import async_engine_from_config
|
|
|
|
from common.db import Base
|
|
|
|
config = context.config
|
|
|
|
if config.config_file_name is not None:
|
|
fileConfig(config.config_file_name)
|
|
|
|
target_metadata = Base.metadata
|
|
|
|
|
|
def canonical_default(value: Any) -> tuple[str, Any] | None:
|
|
"""Normalize harmless MySQL quoting and numeric formatting differences."""
|
|
if value is None:
|
|
return None
|
|
|
|
text_value = str(value).strip()
|
|
while (
|
|
len(text_value) >= 2
|
|
and text_value.startswith("(")
|
|
and text_value.endswith(")")
|
|
):
|
|
text_value = text_value[1:-1].strip()
|
|
if (
|
|
len(text_value) >= 2
|
|
and text_value[0] == text_value[-1]
|
|
and text_value[0] in {"'", '"'}
|
|
):
|
|
text_value = text_value[1:-1]
|
|
|
|
try:
|
|
return ("number", Decimal(text_value).normalize())
|
|
except InvalidOperation:
|
|
return ("text", text_value.casefold())
|
|
|
|
|
|
def compare_server_default(
|
|
migration_context: Any,
|
|
inspected_column: Any,
|
|
metadata_column: Any,
|
|
inspected_default: str | None,
|
|
metadata_default: Any,
|
|
rendered_metadata_default: str | None,
|
|
) -> bool | None:
|
|
"""Suppress formatting-only differences and defer real changes to Alembic."""
|
|
del migration_context, inspected_column, metadata_column, metadata_default
|
|
if canonical_default(inspected_default) == canonical_default(
|
|
rendered_metadata_default
|
|
):
|
|
return False
|
|
return None
|
|
|
|
|
|
def database_url() -> str:
|
|
"""Return the runtime database URL without storing credentials in the repo."""
|
|
try:
|
|
return os.environ["DATABASE_URL"]
|
|
except KeyError as exc:
|
|
raise RuntimeError(
|
|
"DATABASE_URL is required for Alembic commands"
|
|
) from exc
|
|
|
|
|
|
def configure_context(*, connection: Connection | None = None) -> None:
|
|
options = {
|
|
"target_metadata": target_metadata,
|
|
"compare_type": True,
|
|
"compare_server_default": compare_server_default,
|
|
}
|
|
if connection is None:
|
|
context.configure(
|
|
url=database_url(),
|
|
literal_binds=True,
|
|
dialect_opts={"paramstyle": "named"},
|
|
**options,
|
|
)
|
|
else:
|
|
context.configure(connection=connection, **options)
|
|
|
|
|
|
def run_migrations_offline() -> None:
|
|
configure_context()
|
|
with context.begin_transaction():
|
|
context.run_migrations()
|
|
|
|
|
|
def do_run_migrations(connection: Connection) -> None:
|
|
configure_context(connection=connection)
|
|
with context.begin_transaction():
|
|
context.run_migrations()
|
|
|
|
|
|
async def run_async_migrations() -> None:
|
|
section = config.get_section(config.config_ini_section, {})
|
|
section["sqlalchemy.url"] = database_url()
|
|
connectable = async_engine_from_config(
|
|
section,
|
|
prefix="sqlalchemy.",
|
|
poolclass=pool.NullPool,
|
|
)
|
|
|
|
try:
|
|
async with connectable.connect() as connection:
|
|
await connection.run_sync(do_run_migrations)
|
|
finally:
|
|
await connectable.dispose()
|
|
|
|
|
|
def run_migrations_online() -> None:
|
|
asyncio.run(run_async_migrations())
|
|
|
|
|
|
if context.is_offline_mode():
|
|
run_migrations_offline()
|
|
else:
|
|
run_migrations_online()
|