Have something like `lambdaurl` for APIGatewayV2?

[arianvp]

Is your feature request related to a problem? Please describe.

Would be nice to write Lambdas that are behind api gateway v2 easily

Describe the solution you'd like

Be able to turn a http.Handler into a handler for APIGatewayV2 events

Describe alternatives you've considered

Write my own

Additional context
Add any other context or screenshots about the feature request here.

[arianvp]

Oh I just learnt they use the same event format. TIL.

So I guess I can just use lambdaurl for api gateway v2 lambda

https://docs.aws.amazon.com/lambda/latest/dg/urls-invocation.html

[arianvp]

Hmm unfortunately the Authorizer field throws away JWT information and only has IAM information so not fully.

[arianvp]

Ah and the other problem is that API Gateway doesn't have the streaming response like lambda url has.

Ah and the other problem is that API Gateway doesn't have the streaming response like lambda url has.

Hi, could you elaborate?

[bmoffatt]

Ah and the other problem is that API Gateway doesn't have the streaming response like lambda url has.

API Gateway recently released support for streaming https://aws.amazon.com/blogs/compute/building-responsive-apis-with-amazon-api-gateway-response-streaming/

Though (unless I'm mistaken), this support was added only for REST APIs. Not HTTP APIs (eg: APIGatewayV2).

---

In case it helps someone, here's a bit of glue that I used as an experiment to move a personal site from CloudFront -> Lambda Function URL -> aws-lambda-go/lambdaurl to API Gateway -> aws-lambda-go/lambdaurl

func gwtofurl(e *events.APIGatewayProxyRequest) *events.LambdaFunctionURLRequest {
	return &events.LambdaFunctionURLRequest{
		RawPath: e.RequestContext.Path,
		RequestContext: events.LambdaFunctionURLRequestContext{
			HTTP: events.LambdaFunctionURLRequestContextHTTPDescription{
				Method:   e.HTTPMethod,
				SourceIP: e.RequestContext.Identity.SourceIP,
			},
			DomainName: e.RequestContext.DomainName,
		},
	}
}

func main() {
	// ...
	handler := http.NewServeMux()
	// ...
	lambda.StartWithOptions(func(ctx context.Context, e *events.APIGatewayProxyRequest) (any, error) {
		return lambdaurl.Wrap(handler)(ctx, gwtofurl(e))
	}, lambdaurl.WithDetectContentType(true))
}

This is probably missing some nuance, so not immediately applicable to opening a PR for support in aws-lambda-go.