This is an alternate implementation of the Hash Equivalence server that can be used by bitbake. While the reference implementation included in bitbake is sufficient for many use cases, it focuses on correctness and minimal dependencies. As such, there are some features that are not appropriate for it to implement. This implementation is designed as an alternative server that can have more features since it drops some of the restrictions of the bitbake internal implementation.

Specifically, this implementation:

1. Uses websockets as the transport layer for compatibility with modern web-based services
2. Utilizes SQL Alchemy for the database implementation so it can work with almost any SQL database backend
3. Is designed to be stateless so that multiple instances can be run for load-balancing/redundancy
4. Provides Docker images for easy integration into K8s et. al. (TODO: images still need to be built & published)
5. Authentication (See below)
6. Role Based Access Control (TODO: Not implemented yet)

Websockets are chosen as transport mechanism because it makes it easy to run the server on typical web service infrastructure (e.g. K8s), which provides a number of "free" features, such as SSL support and authentication support via the cluster ingress

This repository provides a docker-compose.yaml file to make it easy to quickly spin up an instance of the server with a postgesql database backend. To start the server, simply the following command in this directory:

docker-compose up

Then, configure bitbake to use the this running server by adding the following to your local.conf file:

BB_HASHSERVE = "ws://localhost:9000"