beerds/server/migration/env.py

87 lines
2.7 KiB
Python

from logging.config import fileConfig
from alembic import context
from sqlalchemy import engine_from_config, pool
from sqlalchemy.ext.declarative import declarative_base
from server.config import get_app_config
from server.infra.db.db_mapper import mapper_registry
from server.modules.attachments.repository.models import *
from server.modules.descriptions.repository.models import *
from server.modules.rate.repository.models import *
# this is the Alembic Config object, which provides
# access to the values within the .ini file in use.
config = context.config
Base = declarative_base()
target_metadata = Base.metadata
for (table_name, table) in mapper_registry.metadata.tables.items():
target_metadata._add_table(table_name, table.schema, table)
# 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)
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 = "{}?options=-c search_path={}".format(
str(get_app_config().db_uri).replace(
"+asyncpg", ""), get_app_config().db_search_path
)
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() -> None:
"""Run migrations in 'online' mode.
In this scenario we need to create an Engine
and associate a connection with the context.
"""
alemb_cnf = config.get_section(config.config_ini_section, {})
if not alemb_cnf["sqlalchemy.url"] or alemb_cnf["sqlalchemy.url"] == "driver://user:pass@localhost/dbname":
alemb_cnf["sqlalchemy.url"] = "{}?options=-c search_path={}".format(
str(get_app_config().db_uri).replace(
"+asyncpg", ""), get_app_config().db_search_path
)
connectable = engine_from_config(
alemb_cnf,
prefix="sqlalchemy.",
poolclass=pool.NullPool,
)
with connectable.connect() as connection:
context.configure(
connection=connection, target_metadata=target_metadata,
)
with context.begin_transaction():
context.run_migrations()
if context.is_offline_mode():
run_migrations_offline()
else:
run_migrations_online()