Is it possible to store the alembic connect string outside of alembic.ini?

Question

I\'m using Alembic with SQL Alchemy. With SQL Alchemy, I tend to follow a pattern where I don\'t store the connect string with the versioned code. Instead I have file secr

Answer 1

The simplest thing I could come up with to avoid commiting my user/pass was to a) add in interpolation strings to the alembic.ini file, and b) set these interpolation values in env.py

alembic.ini

sqlalchemy.url = postgresql://%(DB_USER)s:%(DB_PASS)s@35.197.196.146/nozzle-website

env.py

import os

from logging.config import fileConfig

from sqlalchemy import engine_from_config
from sqlalchemy import 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

# here we allow ourselves to pass interpolation vars to alembic.ini
# fron the host env
section = config.config_ini_section
config.set_section_option(section, "DB_USER", os.environ.get("DB_USER"))
config.set_section_option(section, "DB_PASS", os.environ.get("DB_PASS"))

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