OpenFaas Python3 FastAPI using conda Template

A Python FastAPI template that make use of the incubator project of-watchdog relying on a conda environment.yml file for the Python dependencies.

Templates available in this repository:

• python3-fastapi-conda

This template is heavily based on https://github.com/loudsquelch/openfaas-python3-fastapi-template but changes the way Python dependencies are managed (does not use pip and requirements.txt files)

Rational: this template targets the development of openfaas functions using Python that require conda packages to run.

Downloading the templates

$ faas template pull https://github.com/terradue/openfaas-python3-fastapi-conda-template

Using the python3-fastapi-conda templates

Create a new function

$ faas new --lang python3-fastapi-conda <fn-name>

Update the environment.yml file with additional conda dependencies you may need to implement your function.

Don't change the environment name

Don't remove the fastapi and uvicorn dependencies, those are mandatory.

name: env_openfaas
channels:
  - conda-forge
dependencies:
  - python
  - fastapi
  - uvicorn

Build, push, and deploy

$ faas up -f <fn-name>.yml

Set your OpenFaaS gateway URL. For example:

$ OPENFAAS_URL=http://127.0.0.1:8080

Test the new function

$ curl -i $OPENFAAS_URL/function/<fn-name>

Usage

Request Body

The function handler is passed one argument - req which contains the request body.

Response Bodies

By default, the template will automatically attempt to set the correct Content-Type header for you based on the type of response.