140 lines
4.6 KiB
Markdown
140 lines
4.6 KiB
Markdown
# Contributing to kafka-go
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kafka-go is an open source project. We welcome contributions to kafka-go of any kind including documentation,
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organization, tutorials, bug reports, issues, feature requests, feature implementations, pull requests, etc.
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## Table of Contents
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* [Reporting Issues](#reporting-issues)
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* [Submitting Patches](#submitting-patches)
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* [Code Contribution Guidelines](#code-contribution-guidelines)
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* [Git Commit Message Guidelines](#git-commit-message-guidelines)
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* [Fetching the Source From GitHub](#fetching-the-sources-from-github)
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* [Building kafka-go with Your Changes](#building-kakfa-go-with-your-changes)
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## Reporting Issues
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If you believe you have found a defect in kafka-go, use the GitHub issue tracker to report
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the problem to the maintainers.
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When reporting the issue, please provide the version of kafka-go, what version(s) of Kafka
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are you testing against, and your operating system.
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- [kafka-go Issues segmentio/kafka-go](https://github.com/segmentio/kafka-go/issues)
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## Submitting Patches
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kafka-go project welcomes all contributors and contributions regardless of skill or experience levels. If you are
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interested in helping with the project, we will help you with your contribution.
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### Code Contribution
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To make contributions as seamless as possible, we ask the following:
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* Go ahead and fork the project and make your changes. We encourage pull requests to allow for review and discussion of code changes.
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* When you’re ready to create a pull request, be sure to:
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* Have test cases for the new code. If you have questions about how to do this, please ask in your pull request.
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* Run `go fmt`.
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* Squash your commits into a single commit. `git rebase -i`. It’s okay to force update your pull request with `git push -f`.
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* Follow the **Git Commit Message Guidelines** below.
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### Git Commit Message Guidelines
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This [blog article](http://chris.beams.io/posts/git-commit/) is a good resource for learning how to write good commit messages,
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the most important part being that each commit message should have a title/subject in imperative mood starting with a capital letter and no trailing period:
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*"Return error on wrong use of the Reader"*, **NOT** *"returning some error."*
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Also, if your commit references one or more GitHub issues, always end your commit message body with *See #1234* or *Fixes #1234*.
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Replace *1234* with the GitHub issue ID. The last example will close the issue when the commit is merged into *master*.
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Please use a short and descriptive branch name, e.g. NOT "patch-1". It's very common but creates a naming conflict each
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time when a submission is pulled for a review.
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An example:
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```text
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Add Code of Conduct and Code Contribution Guidelines
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Add a full Code of Conduct and Code Contribution Guidelines document.
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Provide description on how best to retrieve code, fork, checkout, and commit changes.
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Fixes #688
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```
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### Fetching the Sources From GitHub
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We use Go Modules support built into Go 1.11 to build. The easiest way is to clone kafka-go into a directory outside of
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`GOPATH`, as in the following example:
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```bash
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mkdir $HOME/src
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cd $HOME/src
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git clone https://github.com/segmentio/kafka-go.git
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cd kafka-go
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go build ./...
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```
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To make changes to kafka-go's source:
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1. Create a new branch for your changes (the branch name is arbitrary):
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```bash
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git checkout -b branch1234
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```
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1. After making your changes, commit them to your new branch:
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```bash
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git commit -a -v
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```
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1. Fork kafka-go in GitHub
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1. Add your fork as a new remote (the remote name, "upstream" in this example, is arbitrary):
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```bash
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git remote add upstream git@github.com:USERNAME/kafka-go.git
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```
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1. Push your branch (the remote name, "upstream" in this example, is arbitrary):
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```bash
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git push upstream
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```
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1. You are now ready to submit a PR based upon the new branch in your forked repository.
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### Using the forked library
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To replace the original version of kafka-go library with a forked version is accomplished this way.
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1. Make sure your application already has a go.mod entry depending on kafka-go
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```bash
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module github.com/myusername/myapp
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require (
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...
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github.com/segmentio/kafka-go v1.2.3
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...
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)
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```
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1. Add the following entry to the beginning of the modules file.
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```bash
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module github.com/myusername/myapp
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replace github.com/segmentio/kafka-go v1.2.3 => ../local/directory
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require (
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...
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github.com/segmentio/kafka-go v1.2.3
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...
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)
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```
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1. Depending on if you are using `vendor`ing or not you might need to run the following command to pull in the new bits.
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```bash
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> go mod vendor
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```
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