MoFaaS

MoFaaS This repository contains the implementation and evaluation of the MoFaaS (Multi-variant Function as a Service) as described in our paper. The repository is organized into two branches: main: Contains the functional blocks of the MoFaaS Controller. evaluation: Includes tests and results obtained during the evaluation phase. Components egress-proxy: Corresponds to the Outbound Controller in the paper. function-chooser: Implements the Trigger Controller. mofaas-controller: The Kubernetes MoFaaS Controller. init-iptables: Container that modifies iptables rules at startup. modified-envoy: Envoy sidecar with custom configurations. Prerequisites Before launching the MoFaaS Controller, ensure you have the following installed: Kyverno: Install Kyverno following the official documentation. After installing, upgrade it like so to enable policy exceptions: helm upgrade kyverno kyverno/kyverno -n kyverno --set features.policyExceptions.enabled=true --set features.policyExceptions.namespace="*" Knative: Install Knative Serving and Eventing following the official documentation. Ensure the Kafka Channel and Broker are set up. Setup Apply Kyverno Cluster Policy: kubectl apply -f kyverno.yaml Deploy MoFaaS Kubernetes Controller: cd mofaas-controller make deploy Testing Applications The repository includes two applications used for testing: 1. Bank Application A simple bank app that allows for making transactions. It requires Directus and MySQL. Launch Database and Directus: cd mysql-baas kubectl apply -f mysql.yaml kubectl apply -f directus.yaml Launch the Bank App: cd apps/bank/ # Apply patches for Knative controllers to access MoFaaS custom resources ./patch # Deploy the app cd chart/ helm install bank . Note: The bank app includes vulnerable functions in multiple languages (Java, JS, Go, PHP, Python). The Python version is vulnerable, while others are not. You can modify the values.yaml file in the Helm chart to change settings like concurrent versions per function or function variants. 2. Sample Workflow This app launches multiple interconnected functions with the same implementation to study the performance impact of MoFaaS. Launch the Sample Workflow: cd apps/sample-workflow/chart helm install sample-workflow . You can modify the values.yaml file to change the size of the workflow and the number of variants for each function. MoFaaS LLM Feedback Loop The MoFaaS LLM Feedback Loop was implemented and is available in another repository: https://github.com/ATNoG/mofaas-version-generation. Please refer to it if you want to try it and contribute. Contributing We welcome contributions! Please open an issue or submit a pull request. License This project is licensed under the GPL-3.0 License. See the LICENSE file for details.