An Empirical Study of Complexity, Heterogeneity, and Compliance of GitHub Actions Workflows

Fuente: arXiv
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Autori principali: Abrokwah, Edward, Ghaleb, Taher A.
Natura: Preprint
Pubblicazione: 2025
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author Abrokwah, Edward
Ghaleb, Taher A.
author_facet Abrokwah, Edward
Ghaleb, Taher A.
contents Continuous Integration (CI) has evolved from a tooling strategy to a fundamental mindset in modern CI engineering. It enables teams to develop, test, and deliver software rapidly and collaboratively. Among CI services, GitHub Actions (GHA) has emerged as a dominant service due to its deep integration with GitHub and a vast ecosystem of reusable workflow actions. Although GHA provides official documentation and community-supported best practices, there appears to be limited empirical understanding of how open-source real-world CI workflows align with such practices. Many workflows might be unnecessarily complex and not aligned with the simplicity goals of CI practices. This study will investigate the structure, complexity, heterogeneity, and compliance of GHA workflows in open-source software repositories. Using a large dataset of GHA workflows from Java, Python, and C++ repositories, our goal is to (a) identify workflow complexities, (b) analyze recurring and heterogeneous structuring patterns, (c) assess compliance with GHA best practices, and (d) uncover differences in CI pipeline design across programming languages. Our findings are expected to reveal both areas of strong adherence to best practices and areas for improvement where needed. These insights will also have implications for CI services, as they will highlight the need for clearer guidelines and comprehensive examples in CI documentation.
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id arxiv_https___arxiv_org_abs_2507_18062
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle An Empirical Study of Complexity, Heterogeneity, and Compliance of GitHub Actions Workflows
Abrokwah, Edward
Ghaleb, Taher A.
Software Engineering
Continuous Integration (CI) has evolved from a tooling strategy to a fundamental mindset in modern CI engineering. It enables teams to develop, test, and deliver software rapidly and collaboratively. Among CI services, GitHub Actions (GHA) has emerged as a dominant service due to its deep integration with GitHub and a vast ecosystem of reusable workflow actions. Although GHA provides official documentation and community-supported best practices, there appears to be limited empirical understanding of how open-source real-world CI workflows align with such practices. Many workflows might be unnecessarily complex and not aligned with the simplicity goals of CI practices. This study will investigate the structure, complexity, heterogeneity, and compliance of GHA workflows in open-source software repositories. Using a large dataset of GHA workflows from Java, Python, and C++ repositories, our goal is to (a) identify workflow complexities, (b) analyze recurring and heterogeneous structuring patterns, (c) assess compliance with GHA best practices, and (d) uncover differences in CI pipeline design across programming languages. Our findings are expected to reveal both areas of strong adherence to best practices and areas for improvement where needed. These insights will also have implications for CI services, as they will highlight the need for clearer guidelines and comprehensive examples in CI documentation.
title An Empirical Study of Complexity, Heterogeneity, and Compliance of GitHub Actions Workflows
topic Software Engineering
url https://arxiv.org/abs/2507.18062