API Gateway Proxy Integration payload format 2.0 incompatible

[forresthopkinsa]

Expected Behavior

API Gateway HTTP API using proxy integration with a Lambda running Micronaut should work by default

Actual Behaviour

Micronaut silently fails to parse parameters from the default Proxy Integration payload format (2.0) and so every request is read as a GET / (and it is very, very difficult to troubleshoot)

Steps To Reproduce

1. Create a Micronaut Application from Micronaut Launch using all defaults, with the 'aws-lambda' feature
2. Deploy jar to a Corretto 11 Lambda
3. Set Lambda handler to io.micronaut.function.aws.proxy.MicronautLambdaHandler
4. Create an HTTP API in APIGW
5. Hook up an ANY /{proxy+} route to the Micronaut lambda
6. Try to POST the APIGW default endpoint with a valid body for BookController.save
7. Server responds:

{
  "message": "Method Not Allowed",
  "_links": {
    "self": {
      "href": "https://myapigw.execute-api.us-east-2.amazonaws.comnull",
      "templated": false
    }
  },
  "_embedded": {
    "errors": [
      {
        "message": "Method [GET] not allowed for URI [https://myapigw.execute-api.us-east-2.amazonaws.comnull]. Allowed methods: [POST]"
      }
    ]
  }
}

Environment Information

micronaut-cli.yml

applicationType: default
defaultPackage: com.example
testFramework: junit
sourceLanguage: java
buildTool: gradle
features: [annotation-api, app-name, aws-lambda, gradle, jackson-databind, java, java-application, junit, logback, micronaut-build, readme, shade, yaml]

Example Application

No response

Version

3.4.0

[forresthopkinsa]

Gitter thread

[forresthopkinsa]

Related: #321, #1054

[msailes]

While working on this, you might want to consider if you want to add support for Application Load Balancers. The request / response format is very similar.

[nanodeath]

This is also a blocker for using lambda function URLs, which only support Payload format version 2.0.

[yurikilian]

While working on this, you might want to consider if you want to add support for Application Load Balancers. The request / response format is very similar.

Guys, any plans to support ALB payload on this issue? If not lets open a new one to separated conrtibuition.

[driverpt]

@sdelamo @alvarosanchez @msailes , any ETA on this one?

[sdelamo]

Currently, micronaut-function-aws-api-proxy supports only Payload format version 1.0.

if you select aws-cdk, amazon-api-gateway, aws-lambda, we setup the gateway to use payload 1.0.

HttpLambdaIntegration integration = HttpLambdaIntegration.Builder.create("HttpLambdaIntegration", function)
    .payloadFormatVersion(VERSION_1_0)
 .build();
HttpApi api = HttpApi.Builder.create(this, "micronaut-function-api")
    .defaultIntegration(integration)
    .build();

[driverpt]

@sdelamo , we require ALB Lambda Integration. Do you have any guidance on how to implement this? I would like to give it a shot.

[sdelamo]

Micronaut Framework 4.0 supports v1, v2 and ALB events.