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52 lines
2.3 KiB
Markdown
52 lines
2.3 KiB
Markdown
---
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date: "2023-02-14T00:00:00+00:00"
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title: "Guidelines for Refactoring"
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slug: "guidelines-refactoring"
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weight: 20
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toc: false
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draft: false
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menu:
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sidebar:
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parent: "developers"
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name: "Guidelines for Refactoring"
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weight: 20
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identifier: "guidelines-refactoring"
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---
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# Guidelines for Refactoring
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**Table of Contents**
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{{< toc >}}
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## Background
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Since the first line of code was written at Feb 12, 2014, Gitea has grown to be a large project.
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As a result, the codebase has become larger and larger. The larger the codebase is, the more difficult it is to maintain.
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A lot of outdated mechanisms exist, a lot of frameworks are mixed together, some legacy code might cause bugs and block new features.
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To make the codebase more maintainable and make Gitea better, developers should keep in mind to use modern mechanisms to refactor the old code.
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This document is a collection of guidelines for refactoring the codebase.
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## Refactoring Suggestions
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* Design more about the future, but not only resolve the current problem.
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* Reduce ambiguity, reduce conflicts, improve maintainability.
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* Describe the refactoring, for example:
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* Why the refactoring is needed.
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* How the legacy problems would be solved.
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* What's the Pros/Cons of the refactoring.
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* Only do necessary changes, keep the old logic as much as possible.
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* Introduce some intermediate steps to make the refactoring easier to review, a complete refactoring plan could be done in several PRs.
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* If there is any divergence, the TOC(Technical Oversight Committee) should be involved to help to make decisions.
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* Add necessary tests to make sure the refactoring is correct.
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* Non-bug refactoring is preferred to be done at the beginning of a milestone, it would be easier to find problems before the release.
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## Reviewing & Merging Suggestions
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* A refactoring PR shouldn't be kept open for a long time (usually 7 days), it should be reviewed as soon as possible.
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* A refactoring PR should be merged as soon as possible, it should not be blocked by other PRs.
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* If there is no objection from TOC, a refactoring PR could be merged after 7 days with one core member's approval (not the author).
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* Tolerate some dirty/hacky intermediate steps if the final result is good.
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* Tolerate some regression bugs if the refactoring is necessary, fix bugs as soon as possible.
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