59 lines
1.6 KiB
Python
59 lines
1.6 KiB
Python
"""Alembic environment for the S4 relational schema foundation."""
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from __future__ import annotations
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import os
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from logging.config import fileConfig
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from alembic import context
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from sqlalchemy import pool
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from app.db import Base, create_db_engine, validate_database_url
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import app.models # noqa: F401 - register every model on Base.metadata
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config = context.config
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if config.config_file_name is not None:
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fileConfig(config.config_file_name)
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target_metadata = Base.metadata
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def _database_url() -> str:
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return validate_database_url(os.environ.get("DATABASE_URL") or config.get_main_option("sqlalchemy.url"))
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def run_migrations_offline() -> None:
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context.configure(
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url=_database_url(),
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target_metadata=target_metadata,
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literal_binds=True,
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dialect_opts={"paramstyle": "named"},
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compare_type=True,
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)
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with context.begin_transaction():
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context.run_migrations()
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def run_migrations_online() -> None:
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configuration = config.get_section(config.config_ini_section, {})
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configuration["sqlalchemy.url"] = _database_url()
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connectable = create_db_engine(
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configuration["sqlalchemy.url"],
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poolclass=pool.NullPool,
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)
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with connectable.connect() as connection:
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context.configure(
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connection=connection,
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target_metadata=target_metadata,
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compare_type=True,
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render_as_batch=connection.dialect.name == "sqlite",
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)
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with context.begin_transaction():
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context.run_migrations()
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if context.is_offline_mode():
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run_migrations_offline()
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else:
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run_migrations_online()
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