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Envoy Proxy control-plane written in Python

Project description


Mission statement

This project implements a JSON control-plane based on the [envoy][1] [data-plane-api][2].

The purpose of sovereign is to supply downstream envoy proxies with configuration in near-realtime by responding to discovery requests.


  1. Accepts data from source(s) e.g. file, http, custom
  2. (optional) Applies modifications to the received data
  3. Renders the data into a Jinja2 template (or returns a static response)
  4. Serializes the rendered configuration as JSON and returns it to the Envoy proxy

The idea behind this architecture is to enable high-extensibility. Users can add their own entry point to the package (todo: documentation) which the control-plane will automatically use to retrieve data to be turned into configuration on the fly.


  • Python 3.7+


pip install sovereign

Local development


  • Docker
  • Docker-compose

Installing dependencies for dev

I recommend creating a virtualenv before doing any dev work

python3 -m venv venv source venv/bin/activate pip install -r requirements-dev.txt

Running locally

Running the test env

make run

Running the test env daemonized

make run-daemon


make lint

Unit tests

make unit

Acceptance tests

make run-daemon acceptance

[1]: [2]:

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