Enumeration value for HttpMethod must be non-empty (Service: AmazonApiGateway; Status Code: 400; Error Code: BadRequestException

[joyofdata]

I'm deploying a REST API on API Gateway accessing a web service on Fargate via a VPC Link and an NLB. And this actually works.

[API Gateway] <-> [VPC Link] <-> { [NLB] <-> [Fargate] }

# { ... private subnet ... }

The only missing piece is deploying the method:resource ANY:test/. That part is described in below code snippet:

vpc_link = api.VpcLink(
    self,
    "VpcLinkRaffael",
    targets=[fg.load_balancer],
)


rest_api = api.RestApi(
    self,
    "RestApiRaffael",
)

test = rest_api.root.add_resource("test")
test.add_method(
    "ANY",
    # the following integration setting is causing the problem. for the previous deployment
    # I left this specific parameter out and it deployed fine. so my deployment at this point
    # is a rest API with a resource test and method ANY.
    api.Integration(
        type=api.IntegrationType.HTTP_PROXY,
        options=api.IntegrationOptions(
            vpc_link=vpc_link
        ),
        uri="http://example.org/",
    ),
)

This causes the error:

 0/5 | 4:57:57 PM | UPDATE_IN_PROGRESS   | AWS::ApiGateway::Method                   | RestApiRaffael/Default/test/ANY (RestApiRaffaeltestANY0602E478)
 1/5 | 4:57:58 PM | UPDATE_FAILED        | AWS::ApiGateway::Method                   | RestApiRaffael/Default/test/ANY (RestApiRaffaeltestANY0602E478) Enumeration value for HttpMethod must be non-empty (Service: AmazonApiGateway; Status Code: 400; Error Code: BadRequestException; Request ID: 0a6b9f7d-4501-41e0-8e4a-cbebd0fb1333)
        new Method (/tmp/jsii-kernel-g0iRHB/node_modules/@aws-cdk/aws-apigateway/lib/method.js:45:26)
        \_ Resource.addMethod (/tmp/jsii-kernel-g0iRHB/node_modules/@aws-cdk/aws-apigateway/lib/resource.js:17:16)
        \_ /home/raffael/gitrepos/test-api-elb-fargate/env/lib/python3.8/site-packages/jsii/_embedded/jsii/jsii-runtime.js:7665:51
        \_ Kernel._wrapSandboxCode (/home/raffael/gitrepos/test-api-elb-fargate/env/lib/python3.8/site-packages/jsii/_embedded/jsii/jsii-runtime.js:8298:20)
        \_ /home/raffael/gitrepos/test-api-elb-fargate/env/lib/python3.8/site-packages/jsii/_embedded/jsii/jsii-runtime.js:7665:25
        \_ Kernel._ensureSync (/home/raffael/gitrepos/test-api-elb-fargate/env/lib/python3.8/site-packages/jsii/_embedded/jsii/jsii-runtime.js:8274:20)
        \_ Kernel.invoke (/home/raffael/gitrepos/test-api-elb-fargate/env/lib/python3.8/site-packages/jsii/_embedded/jsii/jsii-runtime.js:7664:26)
        \_ KernelHost.processRequest (/home/raffael/gitrepos/test-api-elb-fargate/env/lib/python3.8/site-packages/jsii/_embedded/jsii/jsii-runtime.js:7372:28)
        \_ KernelHost.run (/home/raffael/gitrepos/test-api-elb-fargate/env/lib/python3.8/site-packages/jsii/_embedded/jsii/jsii-runtime.js:7312:14)
        \_ Immediate._onImmediate (/home/raffael/gitrepos/test-api-elb-fargate/env/lib/python3.8/site-packages/jsii/_embedded/jsii/jsii-runtime.js:7315:37)
        \_ processImmediate (internal/timers.js:456:21)

Before this erroneous deployment I just deployed the RESt API with ANY test/. No problem. So, I can actually go on API Gateway and manually configure:

https://imgur.com/mpSBm8B

• Integration Type: VPC Link
• Use Proxy Integration: Yes
• Method: ANY
• VPC Link: added
• Endpoint URL: http://example.org/

That works. Now what I would like to do is reproduce this with CDK and I think that should be done by adding:

api.Integration(
    type=api.IntegrationType.HTTP_PROXY,
    options=api.IntegrationOptions(
        vpc_link=vpc_link
    ),
    uri="http://example.org/",
),

That's what I am doing above but causes the error. Any ideas what I'm doing wrong?

[joyofdata]

test = rest_api.root.add_resource("test")
test.add_method(
    "ANY",
    api.Integration(
        type=api.IntegrationType.HTTP_PROXY,
        integration_http_method="ANY", #A
        options=api.IntegrationOptions(
            vpc_link=vpc_link,
            connection_type=api.ConnectionType.VPC_LINK, #B
        ),
        uri="http://example.org/",
    ),
)

A and B were missing. That seems to solve it.