aws-cdk: Fn.find_in_map default_value not working in version 2.92.0

[drobbins-ancile]

Describe the bug

I am attempting to use the new default_value behavior that was added in 2.91.0 (#26543) and receiving TypeError: Fn.find_in_map() got an unexpected keyword argument 'default_value' when synthesizing in an AWS CodeBuild project.

Code:

"SUMO_HTTP_ENDPOINT": Fn.find_in_map(
    map_name="SumoLogEndpointMapping",
    top_level_key=Fn.sub("${AWS::Region}"),
    second_level_key=environment_identifier,
    default_value="https://collectors.sumologic.com/receiver/v1/http/ZaVnC4dhaV1w186NMo7tSCtg2WkVlLJuOnn3fLHQVBNG_7-rAMTESF8WXfvgvI9JNThMJXDtarakXHXiikuTsWmTbtuxWNR-7KcsyoYupy7uowmxO7s_eA==",
),

The build project shows the CDK version:

cdk --version
2.92.0 (build bf62e55)

I was asked to create this issue by AWS Support as they were able to replicate the error message as well.

Expected Behavior

The template successfully synthesizes using the mapping with a default value.

Current Behavior

Synthesize fails with TypeError: Fn.find_in_map() got an unexpected keyword argument 'default_value'.

Reproduction Steps

Create a mapping:

  cdk.CfnMapping(
      self,
      "SumoLogEndpointMapping",
      mapping={
          "us-east-1": {
              "Dev": "https://collectors.sumologic.com/receiver/v1/http/ZaVnC4dhaV2zVTIbTl6Q5l5Y5y6BldZgrQTXxwNS7uobzEOcGhKUftWzW9cwXEzHjl8AKpgAvzGmKeVVhy2uK1PgIahFv4Ge1_VSWgQZ36xc7Uj108obQQ==",
	}
      },
  )

Attempt to set a value using Fn.find_in_map:

  "SUMO_HTTP_ENDPOINT": Fn.find_in_map(
      map_name="SumoLogEndpointMapping",
      top_level_key=Fn.sub("${AWS::Region}"),
      second_level_key=environment_identifier,
      default_value="https://collectors.sumologic.com/receiver/v1/http/ZaVnC4dhaV1w186NMo7tSCtg2WkVlLJuOnn3fLHQVBNG_7-rAMTESF8WXfvgvI9JNThMJXDtarakXHXiikuTsWmTbtuxWNR-7KcsyoYupy7elomxO7s_eA==",
  ),

Possible Solution

No response

Additional Information/Context

No response

CDK CLI Version

2.92.0 (build bf62e55)

Framework Version

No response

Node.js Version

16

OS

AWS Linux (CodeBuild aws/codebuild/standard:6.0)

Language

Python

Language Version

3.10

Other information

No response

[peterwoodworth]

Is this only occurring for you in Codebuild? If so, are you sure that your codebuild aws-cdk-lib version is at 2.92.0 as well? You would need to check that the dependencies are actually using the new version, it's not enough for just the CLI to be at 2.92.0 depending on your build commands.

If that isn't an issue, please provide a working reproduction which I'd be able to copy+paste and reproduce the error with, or provide a repository

[scanlonp]

Additionally, does the error still occur if you use CfnMapping.find_in_map() instead of Fn.find_in_map()?

[drobbins-ancile]

Is this only occurring for you in Codebuild? If so, are you sure that your codebuild aws-cdk-lib version is at 2.92.0 as well? You would need to check that the dependencies are actually using the new version, it's not enough for just the CLI to be at 2.92.0 depending on your build commands.

That was it. Not sure why pip was installing an older version as we did not specify a version in the requirements.txt file but it seems to have corrected itself.

Thanks for your time.

[github-actions]

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