Installing the backend via command line

1. Set up a PostgreSQL database manually (https://www.postgresql.org/download/). If necessary, adjust the URI in your .env file located at mcserver/.env.
2. Run pip install -r requirements.txt.
3. Run python app.py and python run_csm.py as separate processes.

Endpoints

The default starting point for the API will be at http://localhost:5000/mc/api/v1.0/corpora .

Configuration

For general configuration, use the file mcserver/config.py. To customize sensitive parts of your configuration, create a ".env" file in the directory "mcserver". A basic .env file may look like this:

DATABASE_URL_PROD=postgresql://postgres@db:5432/
DATABASE_URL=postgresql://postgres@db:5432/
# Change this to "production" for public use
FLASK_ENV_VARIABLE=development
# for Windows, use 127.0.0.1 instead
HOST_IP=0.0.0.0
RUST_BACKTRACE=1
OBJC_DISABLE_INITIALIZE_FORK_SAFETY=YES

Dependencies

To update outdated dependencies, find the relevant ones by running: pip list -o

Then, for each of the listed dependencies, run: pip install -U <DEPENDENCY_NAME>

Or combine both commands in one line: pip list -o --format=freeze | grep -v '^\-e' | cut -d = -f 1 | xargs -n1 pip install -U

Database

To autogenerate a new migration script:

1. Start the Docker container with the database: docker-compose run -p 5432:5432 -d db
2. Create a new migration: flask db migrate.
3. Perform a migration...
   • ... to a newer version: flask db upgrade.
   • ... to an older version: flask db downgrade.
   • If it does nothing or fails, make sure that the environment variable FLASK_APP is set correctly (see https://flask.palletsprojects.com/en/1.1.x/cli/): export FLASK_APP=app.py
4. To finish the process, shut down the database container: docker-compose down

Testing

To check the coverage of the current tests, run coverage run --rcfile=.coveragerc tests.py && coverage combine && coverage report -m.