p A unifying framework for the systematic analysis of Git workflows


Rios J. C. C. , Embury S. M. , Eraslan S.

INFORMATION AND SOFTWARE TECHNOLOGY, vol.145, 2022 (Peer-Reviewed Journal) identifier identifier

  • Publication Type: Article / Article
  • Volume: 145
  • Publication Date: 2022
  • Doi Number: 10.1016/j.infsof.2021.106811
  • Journal Name: INFORMATION AND SOFTWARE TECHNOLOGY
  • Journal Indexes: Science Citation Index Expanded, Scopus, ABI/INFORM, Applied Science & Technology Source, Business Source Elite, Business Source Premier, Compendex, Computer & Applied Sciences, INSPEC, DIALNET, Library, Information Science & Technology Abstracts (LISTA)
  • Keywords: Git, Workflows, Feature-based modelling, Version control, Branching

Abstract

Context: Git is a popular distributed version control system that provides flexibility and robustness for software development projects. Several workflows have been proposed to codify the way project contributors work collaboratively with Git. Some workflows are highly prescriptive while others allow more leeway but do not provide the same level of code quality assurance, thus, preventing their comparison to determine the most suitable for a specific set of requirements, or to ascertain if a workflow is being properly followed. Objective: In this paper, we propose a novel feature-based framework for describing Git workflows, based on a study of 26 existing instances. The framework enables workflows' comparison, to discern how, and to what extent, they exploit Git capabilities for collaborative software development. Methods: The framework uses feature-based modelling to map Git capabilities, regularly expressed as contribution guidelines, and a set of features that can be impartially applied to all the workflows considered. Through this framework, each workflow was characterised based on their publicly available descriptions. The characterisations were then vectorised and processed using hierarchical clustering to determine workflows' similarities and to identify which features are most popular, and more relevant for discriminatory purposes. Results: Comparative analysis evidenced that some workflows claiming to be closely related, when described and then characterised, turned out to have more differences than similarities. The analysis also showed that most workflows focus on the branching and code integration strategies, whilst others emphasise subtle differences from other popular workflows or describe a specific development route and are, thus, widely reused. Conclusion: The characterisation and clustering analysis demonstrated that our framework can be used to compare and analyse Git workflows.