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fix(events): event bus fails with duplicate policy resource #28521

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merged 5 commits into from Jan 2, 2024
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@kaizencc kaizencc commented Dec 29, 2023

#27340 introduced the ability to create multiple event bus policies on a single event bus. To facilitate this, the logical Id was changed from "Policy" to the statementId. This triggers a replacement, which fails in CloudFormation because the statement ID does not change. The idea behind this PR is simple -- we are updating the statement ID of the policy to trigger a change for anyone who updates to the new version.

I think we are okay with this change because no one should be depending on the statementIds of their policies. And since the policy is not a stateful resource, updating the policy should not harm anyone. I have checked the feasibility of this PR on my own, hence the lack of an integ test.

closes #28520


By submitting this pull request, I confirm that my contribution is made under the terms of the Apache-2.0 license

@github-actions github-actions bot added the p2 label Dec 29, 2023
@aws-cdk-automation aws-cdk-automation requested a review from a team December 29, 2023 15:38
@github-actions github-actions bot added bug This issue is a bug. effort/small Small work item – less than a day of effort p0 and removed p2 labels Dec 29, 2023
@mergify mergify bot added the contribution/core This is a PR that came from AWS. label Dec 29, 2023
@kaizencc kaizencc added the pr-linter/exempt-integ-test The PR linter will not require integ test changes label Dec 29, 2023
@aws-cdk-automation aws-cdk-automation added the pr/needs-maintainer-review This PR needs a review from a Core Team Member label Dec 30, 2023
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mergify bot commented Jan 2, 2024

Thank you for contributing! Your pull request will be updated from main and then merged automatically (do not update manually, and be sure to allow changes to be pushed to your fork).

@aws-cdk-automation aws-cdk-automation removed the pr/needs-maintainer-review This PR needs a review from a Core Team Member label Jan 2, 2024
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@mergify mergify bot merged commit 166967f into main Jan 2, 2024
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@mergify mergify bot deleted the conroy/fixp0 branch January 2, 2024 13:54
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Thank you for contributing! Your pull request will be updated from main and then merged automatically (do not update manually, and be sure to allow changes to be pushed to your fork).

paulhcsun pushed a commit to paulhcsun/aws-cdk that referenced this pull request Jan 5, 2024
aws#27340 introduced the ability to create multiple event bus policies on a single event bus. To facilitate this, the logical Id was changed from `"Policy"` to the statementId. This triggers a replacement, which fails in CloudFormation because the statement ID does not change. The idea behind this PR is simple -- we are updating the statement ID of the policy to trigger a change for anyone who updates to the new version.

I think we are okay with this change because no one should be depending on the statementIds of their policies. And since the policy is not a stateful resource, updating the policy should not harm anyone. I have checked the feasibility of this PR on my own, hence the lack of an integ test.

closes aws#28520 

----

*By submitting this pull request, I confirm that my contribution is made under the terms of the Apache-2.0 license*
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(aws-events): {EventsPolicyId} already exists in stack Upgrade to 2.117.0 rolls back due duplicate resources
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