🥣 gravyvalet

gravyvalet fetches, serves, and holds small ladlefuls of precious bytes.

together with waterbutler (which fetches and serves whole streams of bytes, but holds nothing), gravyvalet provides an api to support "osf addons", whereby you can share controlled access to online accounts (e.g. cloud storage) with your collaborators on osf.

(NOTE: gravyvalet is still under active development and changes may happen suddenly, tho current docs may or may not be available at https://addons.staging.osf.io/docs )

how to...

...set up gravyvalet for local development with osf, using docker

0. have osf running (with its api at http://192.168.168.167:8000)
1. Start your PostgreSQL and Django containers with docker compose up -d.
2. Enter the Django container: docker compose exec gravyvalet /bin/bash.
3. Migrate the existing models: python manage.py migrate.
4. Visit http://0.0.0.0:8004/.

...run tests

To run tests, use the following command:

python manage.py test

(recommend adding --failfast when looking for immediate feedback)

...set up external services

start by creating an admin account with django's createsuperuser command:

python manage.py createsuperuser

then log in with that account at localhost:8004/admin to manage external services (including oauth config) and to create other admin users

...configure a good environment

see app/env.py for details on all environment variables used.

when run without a DEBUG environment variable (note: do NOT run with DEBUG in production), some additional checks are run on the environment:

• GRAVYVALET_ENCRYPT_SECRET is required -- ideally chosen by strong randomness, with maybe ~128 bits of entropy (e.g. 32 hex digits; 30 d20 rolls; 13 words of a 1000-word vocabulary)

...rotate encryption keys responsibly

don't let your secrets get stale! you can rotate the secret used to derive encryption keys (as well as the parameters for key derivation -- see app/env.py for details)

1. update environment:
   • set GRAVYVALET_ENCRYPT_SECRET to a new, long, random string (...no commas, tho)
   • add the old secret to GRAVYVALET_ENCRYPT_SECRET_PRIORS (comma-separated list)
   • (optional) update key-derivation parameters with best-practices du jour
2. run python manage.py rotate_encryption to enqueue key-rotation tasks (on the gravyvalet_tasks.CHILL queue by default)
3. once that queue of tasks is complete, update environment again to remove the old secret from GRAVYVALET_ENCRYPT_SECRET_PRIORS

...enable pre-commit hooks

Optionally, but recommended: Set up pre-commit hooks that will run formatters and linters on staged files. Install pre-commit using:

pip install pre-commit

Then, run:

pre-commit install --allow-missing-config

...ask questions or report issues

If you encounter a bug, have a technical question, or want to request a feature, please don't hesitate to contact us at [email protected]. While we may respond to questions through other channels, reaching out to us at [email protected] ensures that your feedback goes to the right person promptly. If you're considering posting an issue on our GitHub issues page, we recommend sending it to [email protected] instead.