import logging from sqlalchemy import create_engine from sqlalchemy import pool from alembic import context from barker.core.config import settings logging.basicConfig() logging.getLogger("sqlalchemy.engine").setLevel(settings.ALEMBIC_LOG_LEVEL) logging.getLogger("alembic").setLevel(settings.ALEMBIC_LOG_LEVEL) # Interpret the config file for Python logging. # This line sets up loggers basically. from barker.models.auth import User # noqa target_metadata = User.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. def run_migrations_offline(): """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 = settings.SQLALCHEMY_DATABASE_URI context.configure( url=url, target_metadata=target_metadata, literal_binds=True, dialect_opts={"paramstyle": "named"}, compare_type=True, ) with context.begin_transaction(): context.run_migrations() def run_migrations_online(): """Run migrations in 'online' mode. In this scenario we need to create an Engine and associate a connection with the context. """ connectable = create_engine(settings.SQLALCHEMY_DATABASE_URI, 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()