60 lines
No EOL
1.6 KiB
Python
60 lines
No EOL
1.6 KiB
Python
import os
|
|
from logging.config import fileConfig
|
|
|
|
from sqlalchemy import engine_from_config, pool
|
|
from alembic import context
|
|
|
|
# this is the Alembic Config object, which provides
|
|
# access to the values within the .ini file in use.
|
|
config = context.config
|
|
|
|
# Interpret the DATABASE_URL env var, if set; else fall back to ini file
|
|
database_url = os.getenv('DATABASE_URL', config.get_main_option('sqlalchemy.url'))
|
|
config.set_main_option('sqlalchemy.url', database_url)
|
|
|
|
# Interpret log config
|
|
if config.config_file_name is not None:
|
|
fileConfig(config.config_file_name)
|
|
|
|
# add your model's MetaData object here
|
|
# for 'autogenerate' support
|
|
from db_async import metadata # noqa
|
|
target_metadata = metadata
|
|
|
|
|
|
def run_migrations_offline():
|
|
'''Run migrations in 'offline' mode.''' # noqa
|
|
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.''' # noqa
|
|
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,
|
|
)
|
|
|
|
with context.begin_transaction():
|
|
context.run_migrations()
|
|
|
|
|
|
if context.is_offline_mode():
|
|
run_migrations_offline()
|
|
else:
|
|
run_migrations_online() |