zhixing-system/zhixing-server/migrations/env.py

"""Alembic environment using the server's single Settings entry point."""

from logging.config import fileConfig

from alembic import context
from sqlalchemy import engine_from_config, pool

from zhixing_server.bootstrap.config import get_settings, sqlalchemy_database_url
from zhixing_server.modules.market_data.infrastructure.schema import metadata

config = context.config
settings = get_settings()
sqlalchemy_url = sqlalchemy_database_url(settings.database_url)
config.set_main_option("sqlalchemy.url", sqlalchemy_url.replace("%", "%%"))
if config.config_file_name is not None:
    fileConfig(config.config_file_name)

target_metadata = metadata


def run_migrations_offline() -> None:
    """Run migrations without opening a database connection."""

    context.configure(
        url=sqlalchemy_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() -> None:
    """Run migrations against the configured PostgreSQL connection."""

    connectable = engine_from_config(
        config.get_section(config.config_ini_section, {}),
        prefix="sqlalchemy.",
        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()