Feature request: Warn users when adding multiple values to dimension before flushing

[leandrodamascena]

Use case

Original issue in TypeScript: aws-powertools/powertools-lambda-typescript#3350

When a user adds multiple values to a single dimension before flushing metrics, only the last value set on the dimension wins.

Solution/User Experience

It would be nice if the metrics object would do a warnings.warning when multiple distinct values are used on a single dimension before flushing. Current behavior uses the last value added to the dimension.

Alternative solutions

Acknowledgment

• This feature request meets Powertools for AWS Lambda (Python) Tenets
• Should this be considered in other Powertools for AWS Lambda languages? i.e. Java, TypeScript, and .NET

[leandrodamascena]

Assigning to @anafalcao

[github-actions]

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[github-actions]

This is now released under 3.4.0 version!