import os
import sys
from logging.config import fileConfig
from sqlalchemy import engine_from_config
from sqlalchemy import pool
from alembic import context
# allow importing app package
sys.path.append(os.path.abspath(os.path.join(os.path.dirname(__file__), '..')))
from app.config import settings
from app.db import metadata
# this is the Alembic Config object, which provides
# access to the values within the .ini file in use.
config = context.config
# Interpret the config file for Python logging.
fileConfig(config.config_file_name)
target_metadata = metadata
def run_migrations_offline():
"""Run migrations in 'offline' mode."""
url = settings.DATABASE_URL
context.configure(url=url, target_metadata=target_metadata, literal_binds=True)
with context.begin_transaction():
context.run_migrations()
def run_migrations_online():
"""Run migrations in 'online' mode."""
configuration = config.get_section(config.config_ini_section) or {}
configuration['sqlalchemy.url'] = str(settings.DATABASE_URL)
connectable = engine_from_config(
configuration,
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()