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Contributing

Thank you for wanting to contribute to aws-nuke.

Because of the amount of AWS services and their rate of change, we rely on your participation. For the same reason we can only act retroactive on changes of AWS services. Otherwise it would be a fulltime job to keep up with AWS.

How Can I Contribute?

Some Resource Is Not Supported by aws-nuke

If a resource is not yet supported by aws-nuke, you have two options to resolve this:

  • File an issue and describe which resource is missing. This way someone can take care of it.
  • Add the resource yourself and open a Pull Request. Please follow the guidelines below to see how to create such a resource.

Some Resource Does Not Get Deleted

Please check the following points before creating a bug issue:

  • Is the resource actually supported by aws-nuke? If not, please follow the guidelines above.
  • Are there permission problems? In this case aws-nuke will print errors that usually contain the status code 403.
  • Did you just get scared by an error that was printed? aws-nuke does not know about dependencies between resources. To work around this it will just retry deleting all resources in multiple iterations. Therefore it is normal that there are a lot of dependency errors in the first one. The iterations are separated by lines starting with Removal requested: and only the errors in the last block indicate actual errros.

File an issue and describe as accurately as possible how to generate the resource on AWS that cause the errors in aws-nuke. Ideally this is provided in a reproducible way like a Terraform template or AWS CLI commands.

I Have Ideas to Improve aws-nuke

You should take these steps if you have an idea how to improve aws-nuke:

  1. Check the issues page, whether someone already had the same or a similar idea.
  2. Also check the closed issues, because this might have already been implemented, but not yet released. Also the idea might not be viable for unobvious reasons.
  3. Join the discussion, if there is already an related issue. If this is not the case, open a new issue and describe your idea. Afterwards, we can discuss this idea and form a proposal.

I Just Have a Question

Please use our mailing list for questions: aws-nuke@googlegroups.com. You can also search in the mailing list archive, whether someone already had the same problem: https://groups.google.com/d/forum/aws-nuke

Resource Guidelines

Consider Pagination

Most AWS resources are paginated and all resources should handle that.

Use Properties Instead of String Functions

Currently, each resource can offer two functions to describe itself, that are used by the user to identify it and by aws-nuke to filter it.

The String function is deprecated:

String() string

The Properties function should be used instead:

Properties() types.Properties

The interface for the String function is still there, because not all resources are migrated yet. Please use the Properties function for new resources.

Filter Resources That Cannot Get Removed

Some AWS APIs list resources, that cannot be deleted. For example:

  • Resources that are already deleted, but still listed for some time (eg EC2 Instances).
  • Resources that are created by AWS, but cannot be deleted by the user (eg some IAM Roles).

Those resources should be excluded in the filter step, rather than in the list step.

Styleguide

Go

Code Format

Like almost all Go projects, we are using go fmt as a single source of truth for formatting the source code. Please use go fmt before committing any change.

Git

Setup Email

We prefer having the commit linked to the GitHub account, that is creating the Pull Request. To make this happen, git must be configured with an email, that is registered with a GitHub account.

To set the email for all git commits, you can use this command:

git config --global user.email "email@example.com"

If you want to change the email only for the aws-nuke repository, you can skip the --global flag. You have to make sure that you are executing this in the aws-nuke directory:

git config user.email "email@example.com"

If you already committed something with a wrong email, you can use this command:

git commit --amend --author="Author Name <email@address.com>"

This changes the email of the lastest commit. If you have multiple commits in your branch, please squash them and change the author afterwards.