Detecting Event Carried State Transfer Violations in an Event Driven Architecture

In order to reduce the verbosity of the README some abbreviations have been adopted.

• ECST for Event Carried State Transfer
• EDA for Event Driven Architecture

This repo is meant as a companion of the bachelor thesis (link TBA) of mine.

Repo Structure

The repo is composed of three branches:

• basic-system where a basic version of the application system is stored (without the telemetry capture)
• main which holds a copy of the EDA with the instrumentation in place
• faulty-system which holds the same system with a violation of the ECST principles (dependecy anti-pattern) purposely implemented

How to run

To get the system running follow the steps listed below, beware that the application is built with DockerComposeV2 (pytest may fail otherwise).

1. Gather the necessary software

The system requires 3 programmes to be installed locally:

• Python: the application uses Flask for simulating the behaviour of a server on which each service is hosted.
• Docker Compose: the application makes use of the container technology for simulating the system. Additionally by utilising compose it is possible to start each service with the ports already configured.

2.Get the application running

By executing the command docker compose up --build the application system will deploy automatically in its entirety (along with jaeger as telemetry capture service).

3.Produce telemetry

Either interact with the system (by either querying the gateway service or the single services themselves) or run pytest for some interactions to be simulated and recorded.

4.Visualise interaction data

Access the frontend of the collection service by opening the web browser at the frontend port of Jaeger.