Thank you for your interest in contributing the AWS SDK for Java! We work hard to provide a high quality and useful SDK for our customers, and we appreciate your interest in helping us and the rest of our community of users. We welcome bug reports, feature requests, and code contributions.
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Bug reports are accepted through the Issues page.
The following labels are used to track bug related issues: Bug, Documentation Issue.
Before submitting a bug report, please do the following:
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Do a search through the existing issues to make sure it has not already been reported. If there's an existing one, be sure give a +1 reaction which will help us prioritize which issues to address first.
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If possible, upgrade to the latest release of the SDK. The SDK has a near daily release cadence so it's possible the bug has already been fixed in the latest version. We maintain a strong backwards compatibility guarantee between patch version releases so you can be confident that your application will continue to work as expected with the newer version.
If, after doing the above steps, you determine that you need to submit a bug report, refer to the next section.
So that we are able to assist you as effectively as possible with the issue, please ensure that your bug report has the following:
- A short, descriptive title. Ideally, other community members should be able to get a good idea of the issue just from reading the title.
- A succint, detailed description of the problem you're experiencing. This
should include:
- Expected behavior of the SDK and the actual behavior exhibited.
- Any details of your application environment that may be relevant. At minimum, this should include the SDK version and JRE version.
- If applicable, the exception stacktrace.
- If you are able to create one, include a Minimal Working Example that reproduces the issue.
- Markdown formatting as appropriate to make the report easier to read; for example use code blocks when pasting a code snippet and exception stacktraces.
Like bug reports, feature requests are submitted through the Issues page.
As with Bug Reports, please do a search of the open requests first before submitting a new one to avoid duplicates. If you find an existing one, give it a +1.
NOTE: If this is a feature you intend to implement, please be sure to submit the feature request before working on any code changes. This will allow members on the SDK team to have a discussion with you to ensure that it's the right design and that it makes sense to include in the SDK. Keep in mind that other concerns like source and binary compatibility will also play a deciding factor.
Feature requests are labeled with Feature Request.
Open an issue with the following:
- A short, descriptive title. Ideally, other community members should be able to get a good idea of the feature just from reading the title.
- A detailed description of the the proposed feature. Include justification for why it should be added to the SDK, and possibly example code to illustrate how it should work.
- Markdown formatting as appropriate to make the request easier to read.
- If you intend to implement this feature, indicate that you'd like to the issue to be assigned to you
Code contributions to the SDK are done through Pull Requests. Please keep the following in mind when considering a code contribution:
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The SDK is released under the Apache 2.0 License.
Any code you submit will be released under this license. If you are contributing a large/substantial feature, you may be asked to sign a Contributor License Agreement (CLA).
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For anything but very small or quick changes, you should always start by checking the Issues page to see if the work is already being done by another person.
If you're working on a bug fix, check to see if the bug has already been reported. If it has but no one is assigned to it, ask one of the maintainers to assign it to you before beginning work. If you're confident the bug hasn't been reported yet, create a new Bug Report then ask to be assigned to it.
If you are thinking about adding entirely new functionality, open a Feature Request or ping the maintainers to ask for feedback first before beginning work; again this is to make sure that no one else is already working on it, and also that it makes sense to be included in the SDK.
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All code contributions must be accompanied with new or modified tests that verify that the code works as expected; i.e. that the issue has been fixed or that the functionality works as intended.
For detailed information on getting started building and making code changes to the SDK, refer to our Working on the SDK wiki page.
Before submitting your pull request, refer to the pull request readiness checklist below:
- Includes tests to exercise the new behavior
- Code is documented, especially public and user-facing constructs
- Local run of
mvn installsucceeds - Git commit message is detailed and includes context behind the change
- If the change is related to an existing Bug Report or Feature Request, the issue number is referenced
- A short description of the change added to
CHANGELOG.md. Adding a new entry can be accomplished by
running the
scripts/new-changescript and following the instructions. Commit the new file created by the script in.changes/next-releasewith your changes.
Note: Some changes have additional requirements. Refer to the section below to see if your change will require additional work to be accepted.
If the change includes implementations of the Reactive Streams interfaces, the change must also contain verification tests using the Reactive Streams Technology Compatibility Kit to ensure specificiation compliance.
All Pull Requests must be approved by at least one member of the SDK team before it can be merged in. The members only have limited bandwitdth to review Pull Requests so it's not unusual for a Pull Request to go unreviewed for a few days, especially if it's a large or complex one. If, after a week, your Pull Request has not had any engagement from the SDK team, feel free to ping a member to ask for a review.
If your branch has more than one commit when it's approved, you will also be asked to squash them into a single commit before it is merged in.
We maintain a wiki where information like design decisions, internal architecture, and style conventions are documented that you may find helpful when contributing to the SDK.
- Come chat with us on Gitter!