didier/alembic/env.py

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import asyncio
from logging.config import fileConfig
from alembic import context
from database.engine import engine
from database.models import Base
# 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(config.config_file_name)
target_metadata = Base.metadata
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"},
render_as_batch=True,
)
with context.begin_transaction():
context.run_migrations()
def do_run_migrations(connection):
context.configure(connection=connection, target_metadata=target_metadata, render_as_batch=True)
with context.begin_transaction():
context.run_migrations()
async def run_migrations_online() -> None:
"""Run migrations in 'online' mode.
In this scenario we need to create an Engine
and associate a connection with the context.
"""
connectable = engine
async with connectable.connect() as connection:
await connection.run_sync(do_run_migrations)
await connectable.dispose()
if context.is_offline_mode():
run_migrations_offline()
else:
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# Wonky way to use the Pytest event loop instead of another one
try:
loop = asyncio.get_running_loop()
if loop and loop.is_running():
loop.create_task(run_migrations_online())
except RuntimeError:
asyncio.run(run_migrations_online())