Apollo is released under the non-restrictive Apache 2.0 license, and follows a very standard GitHub development process, using GitHub tracker for issues and merging pull requests into master. If you want to contribute even something trivial please do not hesitate, but follow the guidelines below.
Before we accept a non-trivial patch or pull request we will need you to sign the Contributor License Agreement. Signing the contributor’s agreement does not grant anyone commit rights to the main repository, but it does mean that we can accept your contributions, and you will get an author credit if we do. Active contributors might be asked to join the core team, and given the ability to merge pull requests.
Our code style is in line with Google Java Style Guide.
We provide template files intellij-java-google-style.xml for IntelliJ IDEA and eclipse-java-google-style.xml for Eclipse. If you use other IDEs, then you may config manually by referencing the template files.
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Make sure all new .java files have a simple Javadoc class comment on what the class is for.
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Add some Javadocs and, if you change the namespace, some XSD doc elements.
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A few unit tests should be added for a new feature or an important bug fix.
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If no-one else is using your branch, please rebase it against the current master (or other target branch in the main project).
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Normally, we would squash commits for one feature into one commit. There are 2 ways to do this:
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To rebase and squash based on the remote branch
git rebase -i <remote>/master
- merge commits via
fixup
, etc
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Create a new branch and merge these commits into one
git checkout -b <some-branch-name> <remote>/master
git merge --squash <current-feature-branch>
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For commits, we adhere to the conventional commits format. For more details, refer to Conventional Commits.
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When crafting commit messages, please adhere to the following conventions: if your commit addresses an existing issue, append "Fixes #XXX" to the end of the commit message (where XXX is the issue number).