mealie/alembic/env.py
2024-09-16 13:52:12 +00:00

110 lines
3.2 KiB
Python

from typing import Any
import sqlalchemy as sa
import mealie.db.models._all_models # noqa: F401
from alembic import context
from mealie.core.config import get_app_settings
from mealie.db.models._model_base import SqlAlchemyBase
# this is the Alembic Config object, which provides
# access to the values within the .ini file in use.
config = context.config
# add your model's MetaData object here
# for 'autogenerate' support
# from myapp import mymodel
# target_metadata = mymodel.Base.metadata
target_metadata = SqlAlchemyBase.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.
# Set DB url from config
settings = get_app_settings()
if not settings.DB_URL:
raise Exception("DB URL not set in config")
config.set_main_option("sqlalchemy.url", settings.DB_URL.replace("%", "%%"))
def include_object(object: Any, name: str, type_: str, reflected: bool, compare_to: Any):
# skip dropping food/unit unique constraints; they are defined manually so alembic doesn't see them
# see: revision dded3119c1fe
if type_ == "unique_constraint" and name == "ingredient_foods_name_group_id_key" and compare_to is None:
return False
if type_ == "unique_constraint" and name == "ingredient_units_name_group_id_key" and compare_to is None:
return False
# skip changing the quantity column in recipes_ingredients; it's a float on postgres, but an integer on sqlite
# see: revision 263dd6707191
if (
type_ == "column"
and name == "quantity"
and object.table.name == "recipes_ingredients"
and hasattr(compare_to, "type")
and isinstance(compare_to.type, sa.Integer)
):
return False
return True
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 = 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()
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 = sa.engine_from_config(
config.get_section(config.config_ini_section),
prefix="sqlalchemy.",
poolclass=sa.pool.NullPool,
)
with connectable.connect() as connection:
context.configure(
connection=connection,
target_metadata=target_metadata,
user_module_prefix="mealie.db.migration_types.",
render_as_batch=True,
include_object=include_object,
)
with context.begin_transaction():
context.run_migrations()
if context.is_offline_mode():
run_migrations_offline()
else:
run_migrations_online()