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fix(autoscaling): StepScalingPolicy intervals not checked for going over allowable maximum #26490

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merged 7 commits into from
Jul 25, 2023

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scanlonp
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StepScalingPolicy did not have a validation that the number of intervals in scalingSteps was in the allowable range. The Autoscaling documentation states 20 is the maximum step changes in a policy, and since autoscaling creates 2 policies (an UpperPolicy and a LowerPolicy), our cap is 40.

There is an identical change in Application Autoscaling.

Closes #26215.


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

@aws-cdk-automation aws-cdk-automation requested a review from a team July 24, 2023 22:46
@github-actions github-actions bot added bug This issue is a bug. effort/medium Medium work item – several days of effort p2 labels Jul 24, 2023
@mergify mergify bot added the contribution/core This is a PR that came from AWS. label Jul 24, 2023
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The pull request linter has failed. See the aws-cdk-automation comment below for failure reasons. If you believe this pull request should receive an exemption, please comment and provide a justification.

A comment requesting an exemption should contain the text Exemption Request. Additionally, if clarification is needed add Clarification Request to a comment.

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Clarification Request: this PR should not require an integration test because it does not change the API nor add any features. It moves an error that would have been thrown at deploy time to one that is thrown at synth time. Correct?

@aws-cdk-automation aws-cdk-automation added pr/reviewer-clarification-requested The contributor has requested clarification on feedback, a failing build, or a failing PR Linter run pr/needs-maintainer-review This PR needs a review from a Core Team Member labels Jul 24, 2023
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Looks pretty solid, one minor comment

@@ -111,6 +113,10 @@ export class StepScalingPolicy extends Construct {
throw new Error('You must supply at least 2 intervals for autoscaling');
}

if (props.scalingSteps.length > 40) {
throw new Error('You must have less than 40 steps in StepScalingPolicyProps.scalingSteps');
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should mention how many steps were requested

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Done.

@scanlonp scanlonp added the pr-linter/exempt-integ-test The PR linter will not require integ test changes label Jul 25, 2023
@scanlonp scanlonp changed the title fix(autoscaling): step scaling policy intervals not checked for going over allowable maximum fix(autoscaling): StepScalingPolicy intervals not checked for going over allowable maximum Jul 25, 2023
@aws-cdk-automation aws-cdk-automation dismissed their stale review July 25, 2023 17:53

✅ Updated pull request passes all PRLinter validations. Dismissing previous PRLinter review.

@aws-cdk-automation aws-cdk-automation removed the pr/needs-maintainer-review This PR needs a review from a Core Team Member label Jul 25, 2023
@scanlonp scanlonp removed the pr/reviewer-clarification-requested The contributor has requested clarification on feedback, a failing build, or a failing PR Linter run label Jul 25, 2023
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AWS CodeBuild CI Report

  • CodeBuild project: AutoBuildv2Project1C6BFA3F-wQm2hXv2jqQv
  • Commit ID: 521362e
  • Result: SUCCEEDED
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mergify bot commented Jul 25, 2023

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).

@mergify mergify bot merged commit 58b004e into aws:main Jul 25, 2023
bmoffatt pushed a commit to bmoffatt/aws-cdk that referenced this pull request Jul 29, 2023
…ver allowable maximum (aws#26490)

`StepScalingPolicy` did not have a validation that the number of intervals in `scalingSteps` was in the allowable range. The [Autoscaling documentation](https://docs.aws.amazon.com/autoscaling/ec2/userguide/ec2-auto-scaling-quotas.html) states 20 is the maximum step changes in a policy, and since autoscaling creates 2 policies (an [UpperPolicy](https://github.com/aws/aws-cdk/blob/bc029fe5ac69a8b7fd2dfdbcd8834e9a2cf8e000/packages/aws-cdk-lib/aws-autoscaling/lib/step-scaling-policy.ts#L136-L166) and a [LowerPolicy](https://github.com/aws/aws-cdk/blob/bc029fe5ac69a8b7fd2dfdbcd8834e9a2cf8e000/packages/aws-cdk-lib/aws-autoscaling/lib/step-scaling-policy.ts#L105-L134)), our cap is 40.

There is an identical change in Application Autoscaling.

Closes aws#26215.

----

*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-autoscaling/aws-applicationautoscaling): StepScalingPolicy supports at most 40 steps
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