(Tags): Support case sensitive Tags like Cloudformation

[ayozemr]

Aws console handles case sensitive tags, for example tag key "Name" displays name in console for VPCs but not if the tag key is "name". Cloudformation supports case sensitive, but even that CDK pass the tag as "Name" if you define the key, seems internally handles it as insensitive dropping duplicate tags if you define both lowercase and capital case.

Use Case

Tags.of(dynamodb).add("Name", tableName); Tags.of(dynamodb).add("name", tableName); Duplicate tag keys found. Please note that Tag keys are case insensitive.

We use lowercase (As its common practice). Its useful for external monitoring tools but not for aws console, as aws likes them capitalized. To handle this we duplicate them allowing both keys. CDK is not allowing this with a duplicate tag keys found.

Proposed Solution

Support case sensitive tag keys like cloudformation do

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This is a :rocket: Feature Request

[rix0rrr]

Needs investigation why we put that check there in the first place.

[lxop]

It seems like some AWS services treat tag keys as case sensitive, and others as case insensitive. As a couple of examples, VPCs can have both Name and name tags held simultaneously, while IAM roles fail to deploy if both Name and name are specified. I'm not sure that this is a CDK problem

[evgenyka]

It seems like some AWS services treat tag keys as case sensitive, and others as case insensitive. To ensure compatibility and consistent behavior across different AWS services, the CDK treats tag keys as case-insensitive.

[github-actions[bot]]

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