mirror of
https://github.com/fastapi-practices/fastapi-best-architecture.git
synced 2026-10-07 10:21:47 +00:00
119 lines
3.4 KiB
Python
119 lines
3.4 KiB
Python
import asyncio
|
|
import os
|
|
|
|
from logging.config import fileConfig
|
|
|
|
from alembic import context
|
|
from sqlalchemy import pool
|
|
from sqlalchemy.engine import Connection
|
|
from sqlalchemy.ext.asyncio import async_engine_from_config
|
|
|
|
from backend.common.model import MappedBase
|
|
from backend.core import path_conf
|
|
from backend.core.path_conf import BASE_PATH
|
|
from backend.database.db import get_database_url
|
|
|
|
if not os.path.exists(path_conf.ALEMBIC_VERSION_DIR):
|
|
os.makedirs(path_conf.ALEMBIC_VERSION_DIR)
|
|
|
|
# this is the Alembic Config object, which provides
|
|
# access to the values within the .ini file in use.
|
|
config = context.config
|
|
|
|
# Interpret the config file for Python logging.
|
|
# This line sets up loggers basically.
|
|
if config.config_file_name is not None:
|
|
fileConfig(BASE_PATH / config.config_file_name)
|
|
|
|
# add your model's MetaData object here
|
|
# for 'autogenerate' support
|
|
target_metadata = MappedBase.metadata
|
|
|
|
# other values from the config, defined by the needs of env.py,
|
|
# can be acquired:
|
|
# my_important_option = config.get_main_option("my_important_option")
|
|
# ... etc.
|
|
config.set_main_option(
|
|
'sqlalchemy.url',
|
|
get_database_url().render_as_string(hide_password=False).replace('%', '%%'),
|
|
)
|
|
|
|
|
|
def run_migrations_offline() -> None:
|
|
"""Run migrations in 'offline' mode.
|
|
|
|
This configures the context with just a URL
|
|
and not an Engine, though an Engine is acceptable
|
|
here as well. By skipping the Engine creation
|
|
we don't even need a DBAPI to be available.
|
|
|
|
Calls to context.execute() here emit the given string to the
|
|
script output.
|
|
|
|
"""
|
|
url = config.get_main_option('sqlalchemy.url')
|
|
context.configure(
|
|
url=url,
|
|
target_metadata=target_metadata,
|
|
literal_binds=True,
|
|
dialect_opts={'paramstyle': 'named'},
|
|
compare_type=True,
|
|
compare_server_default=True,
|
|
transaction_per_migration=True,
|
|
)
|
|
|
|
with context.begin_transaction():
|
|
context.run_migrations()
|
|
|
|
|
|
def do_run_migrations(connection: Connection) -> None:
|
|
def process_revision_directives(context, revision, directives) -> None: # ruff:ignore[missing-type-function-argument]
|
|
"""当迁移无变化时，不生成迁移记录"""
|
|
if config.cmd_opts.autogenerate:
|
|
script = directives[0]
|
|
if script.upgrade_ops.is_empty():
|
|
directives[:] = []
|
|
print('\nNo changes in model detected')
|
|
|
|
context.configure(
|
|
connection=connection,
|
|
target_metadata=target_metadata,
|
|
compare_type=True,
|
|
compare_server_default=True,
|
|
transaction_per_migration=True,
|
|
process_revision_directives=process_revision_directives,
|
|
)
|
|
|
|
with context.begin_transaction():
|
|
context.run_migrations()
|
|
|
|
|
|
async def run_async_migrations() -> None:
|
|
"""In this scenario we need to create an Engine
|
|
and associate a connection with the context.
|
|
|
|
"""
|
|
|
|
connectable = async_engine_from_config(
|
|
config.get_section(config.config_ini_section, {}),
|
|
prefix='sqlalchemy.',
|
|
poolclass=pool.NullPool,
|
|
)
|
|
|
|
async with connectable.connect() as connection:
|
|
await connection.run_sync(do_run_migrations)
|
|
|
|
await connectable.dispose()
|
|
|
|
|
|
def run_migrations_online() -> None:
|
|
"""Run migrations in 'online' mode."""
|
|
|
|
asyncio.run(run_async_migrations())
|
|
|
|
|
|
if context.is_offline_mode():
|
|
run_migrations_offline()
|
|
else:
|
|
run_migrations_online()
|