(autoscaling): StepScalingPolicy add evaluationPeriods parameter

[BDeus]

When creating a StepScalingPolicy for an ASG, we cannot configured the evaluationPeriods of the CloudwatchAlarm created in underlying.
The default value is enforced to 1

Proposed Solution

Add a property in BasicStepScalingPolicyProps:

/**
  * The number of the most recent periods, or data points, to evaluate when determining alarm state.
  * @default Default evaluation periods for cloudwatch alarms
  */
  readonly alarmEvaluationPeriods?: number;
}
...
this.upperAlarm = new cloudwatch.Alarm(this, 'UpperAlarm', {
    // Recommended by AutoScaling
    metric: props.metric,
    alarmDescription: 'Upper threshold scaling alarm',
    comparisonOperator: cloudwatch.ComparisonOperator.GREATER_THAN_OR_EQUAL_TO_THRESHOLD,
    evaluationPeriods: props.alarmEvaluationPeriods,
    threshold,
});

Links

aws-cdk/packages/@aws-cdk/aws-autoscaling/lib/step-scaling-policy.ts

Line 109 in 404b556

this.lowerAlarm = new cloudwatch.Alarm(this, 'LowerAlarm', {

aws-cdk/packages/@aws-cdk/aws-autoscaling/lib/step-scaling-policy.ts

Line 144 in 404b556

evaluationPeriods: 1,

• 👋 I may be able to implement this feature request
• ⚠️ This feature might incur a breaking change

---

This is a 🚀 Feature Request

[rix0rrr]

Closed by #13366

[github-actions]

⚠️COMMENT VISIBILITY WARNING⚠️

Comments on closed issues are hard for our team to see.
If you need more assistance, please either tag a team member or open a new issue that references this one.
If you wish to keep having a conversation with other community members under this issue feel free to do so.