forecast-in-a-box 0.5.6

Weather Forecast in a Box

See project's readme.

Development

Setup

There are two options:

1. create manually a venv and install this as an editable package into it,
2. use the fiab.sh script.

The first gives you more control, the second brings more automation -- but both choices are ultimately fine and lead to the same result.

For the first option, active your venv of choice, and then:

mkdir -p ~/.fiab
uv pip install --prerelease=allow --upgrade -e .[test] # the --prerelease will eventually disapper, check whether pyproject contains any `dev` pins
pytest backend # just to ensure all is good

For the second option, check the fiab.sh first -- it is configurable via envvars which are listed at the script's start. In particular, you can change the directory which will contain the venv, and whether it does a PyPI-released or local-editable install. Note however that in case of the local-editable installs, you must execute the fiab.sh with cwd being the backend, as there is pip install -e..

Frontend Required

The frontend is actually expected to be present as artifact inside the backend in case of the editable install. See the justfile's fiabwheel recipe for instruction how to build the frontend and create a symlink inside the backend.

Backend wheels on pypi do contain a frontend copy -- you can alternatively pull a wheel and extract the built frontend into the local install.

Developer Flow

Primary means is running ruff, ty, and pytest, with the config being in pyproject.toml. Ideally, you utilize the val recipe from the justfile here, and install pre-commit hooks.

Type annotations are present and enforced.

In the bigtest.py there is a larger integration test, triggered at CI in addition to the regular pytest -- see the github action for execution.

Architecture Overview

Consists of a four primary components:

1. JavaScript frontend as a stateless page, basically "user form → backend request" -- located at frontend,
2. FastAPI/Uvicorn application with multiple routes, organized by domain: auth, job submission & status, model download & status, gateway interaction, ...
3. standalone "gateway" process, expected to be launched at the beginning together with the Uvicorn process, which is the gateway to the earthkit-workflows,
4. persistence, based on a local sqlite database.

Configuration is handled by the config.py using pydantic's BaseSettings, meaning most behaviour is configurable via envvars -- see fiab.sh or tests for examples. See tuning and configuration guide for more.