sam:CfnFunction is not generating 'ApiId' for events

[arshikam]

Describe the bug

For sam.CfnFunction in the events section, 'api_id' is not getting recognised.

This is the below code:

from aws_cdk import (
    # Duration,
    Stack,
    # aws_sqs as sqs,
    aws_sam as sam
)
import aws_cdk as core
from constructs import Construct

class HttpapiStack(Stack):

    def __init__(self, scope: Construct, construct_id: str, **kwargs) -> None:
        super().__init__(scope, construct_id, **kwargs)

        my_api_gateway = sam.CfnHttpApi(
            self,
            f"HttpApiGateway",
            description="test,
            stage_name="$default",
            cors_configuration=sam.CfnHttpApi.CorsConfigurationObjectProperty(
                allow_headers=["*"],
                allow_methods=["GET", "PUT", "POST", "OPTIONS"],
                allow_origins=["*"],
                max_age=864000,
            ),
        )
        s3_signer_lambda = sam.CfnFunction(
            self,
            f"S3SignerLambda",
            description="test",
            timeout=900,
            role="arn:aws:iam::1234567890:role/lambdaexecutionrole",
            inline_code="return",
            handler="index.handler",
            runtime="python3.9",
            events={
                "S3Sign": sam.CfnFunction.EventSourceProperty(
                    properties=sam.CfnFunction.HttpApiEventProperty(
                        path="/s3-sign",
                        method="POST",
                        api_id= my_api_gateway.ref
                    ),
                    type="HttpApi"
                )
            },
        )

As per the code, in the events section of the CfnFunction, the value for 'api_id' is referenced from the 'CfnHttpApi' defined above so this should resolve as per the cfn return value.

Expected Behavior

The event section should be resolving as below:

  S3SignerLambda:
    Type: AWS::Serverless::Function
    Properties:
      Description: test
      Events:
        S3Sign:
          Properties:
            Method: POST
            Path: /s3-sign
            ApiId:
              Ref: HttpApiGateway
          Type: HttpApi

Current Behavior

However, it is resolving as below where it is observed that it is completely omitting the 'ApiId' property.

  S3SignerLambda:
    Type: AWS::Serverless::Function
    Properties:
      Description: test
      Events:
        S3Sign:
          Properties:
            Method: POST
            Path: /s3-sign
          Type: HttpApi

Reproduction Steps

Added the code to replicate the same above.

Possible Solution

As a workaround, using raw overrides as below is resolving the concern but this should not be an ideal case.

s3_signer_lambda.add_property_override("Events.S3Sign.Properties.ApiId", my_api_gateway.ref);

Additional Information/Context

No response

CDK CLI Version

2.96.2 and 2.103.0

Framework Version

No response

Node.js Version

v18.17.1

OS

macOS Ventura 13.5.2

Language

Python

Language Version

No response

Other information

No response

[pahud]

Yes I can confirm only path and method are synthesized. This seems to be a bug.

https://docs.aws.amazon.com/serverless-application-model/latest/developerguide/sam-property-function-httpapi.html