mitlist/be/alembic/env.py
mohamad cb5bfcf7b5
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refactor: Separate async migration logic into dedicated module and streamline migration functions for improved clarity and maintainability
2025-06-01 17:33:04 +02:00

85 lines
2.7 KiB
Python

from logging.config import fileConfig
import os
import sys
from sqlalchemy import engine_from_config
from sqlalchemy import pool
from sqlalchemy.ext.asyncio import create_async_engine
from alembic import context
# Ensure the 'app' directory is in the Python path
# Adjust the path if your project structure is different
sys.path.insert(0, os.path.realpath(os.path.join(os.path.dirname(__file__), '..')))
# Import your app's Base and settings
import app.models # Ensure all models are loaded and registered to app.database.Base
from app.database import Base as DatabaseBase # Explicitly get Base from database.py
from app.config import settings # Import settings to get DATABASE_URL
# Get alembic config
config = context.config
# Set the sqlalchemy.url from your application settings
# Ensure DATABASE_URL is available and use it directly
if not settings.DATABASE_URL:
raise ValueError("DATABASE_URL not found in settings for Alembic.")
config.set_main_option('sqlalchemy.url', settings.DATABASE_URL)
# Interpret the config file for Python logging.
# This line sets up loggers basically.
if config.config_file_name is not None:
fileConfig(config.config_file_name)
# add your model's MetaData object here
# for 'autogenerate' support
# from myapp import mymodel
# target_metadata = mymodel.Base.metadata
target_metadata = DatabaseBase.metadata # Use metadata from app.database.Base
# 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.
def run_migrations_offline() -> None:
"""Run migrations in 'offline' mode."""
url = config.get_main_option("sqlalchemy.url")
context.configure(
url=url,
target_metadata=target_metadata,
literal_binds=True,
dialect_opts={"paramstyle": "named"},
)
with context.begin_transaction():
context.run_migrations()
async def run_migrations_online() -> None:
"""Run migrations in 'online' mode."""
connectable = create_async_engine(
settings.DATABASE_URL,
poolclass=pool.NullPool,
)
async with connectable.connect() as connection:
await connection.run_sync(_run_migrations)
await connectable.dispose()
def _run_migrations(connection):
context.configure(
connection=connection,
target_metadata=target_metadata,
compare_type=True,
compare_server_default=True
)
with context.begin_transaction():
context.run_migrations()
# This section only runs when executing alembic commands directly (not when imported)
if context.is_offline_mode():
run_migrations_offline()
else:
import asyncio
asyncio.run(run_migrations_online())