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Open-Assistant/backend/README.md
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Andrew Maguire 0f607c7a28 export and auto-commit docs/docs/api/openapi.json as part of test-api-contract workflow (#719)
- copies that openapi.json file to docs/docs/api/openapi.json as part of start-mock-server.sh.
- adds a step to the end of the test-api-contract workflow that just auto-commits changes to the docs/docs/api/openapi.json file.
- excludes docs/docs/api/openapi.json from pre-commit since its already been formatted by jq.
2023-01-14 22:40:33 +00:00

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# Open-Assistant REST Backend
## Backend Development Setup
In root directory, run
`docker compose up backend-dev --build --attach-dependencies` to start a
database. The default settings are already configured to connect to the database
at `localhost:5432`.
Python 3.10 is required. It is recommended to use `pyenv` which will recognise
the `.python-version` in the project root directory.
Make sure you have all requirements installed. You can do this by running
`pip install -r requirements.txt` inside the `backend` folder and
`pip install -e .` inside the `oasst-shared` folder. Then, run the backend using
the `run-local.sh` script inside the `scripts` folder. This will start the
backend server at `http://localhost:8080`.
## REST Server Configuration
Please either use environment variables or create a `.env` file in the backend
root directory (in which this readme file is located) to specify the
`DATABASE_URI`.
Example contents of a `.env` file for the backend:
```
DATABASE_URI="postgresql://<username>:<password>@<host>/<database_name>"
BACKEND_CORS_ORIGINS=["http://localhost", "http://localhost:4200", "http://localhost:3000", "http://localhost:8080", "https://localhost", "https://localhost:4200", "https://localhost:3000", "https://localhost:8080", "http://dev.oasst.laion.ai", "https://stag.oasst.laion.ai", "https://oasst.laion.ai"]
REDIS_HOST=localhost
REDIS_PORT=6379
```
## Running the REST Server locally for development
Have a look into the main `README.md` file for more information on how to set up
the backend for development. Use the scripts within the
scripts/backend-development folder to run the BE API locally.
## Alembic
To create an Alembic database migration script after sql-models were modified
run `alembic revision --autogenerate -m "..."` ("..." is what you did) in the
`/backend` directory. Then edit the newly created file. See
[here](https://alembic.sqlalchemy.org/en/latest/tutorial.html) for more
information.
## API Documentation
Once you have successfully started the backend server, you can access the
default api docs at `localhost:8080/docs`. If you need to update the exported
openapi.json in the docs/ folder you can run below command to `wget` them from
the relevant local fastapi endpoint. This will enable anyone to just see API
docs via something like
[Swagger.io](https://editor.swagger.io/?url=https://raw.githubusercontent.com/LAION-AI/Open-Assistant/main/docs/docs/api/openapi.json)
without having to actually set up and run a development backend.
```bash
# save openapi.json to docs/docs/api
wget localhost:8080/api/v1/openapi.json -O docs/docs/api/openapi.json
```
Note: The api docs should be automatically updated by the
`test-api-contract.yaml` workflow.