Authorizer Event Cookies is always empty

[weaverjess]

https://pkg.go.dev/github.com/aws/aws-lambda-go/events@v1.40.0#APIGatewayV2CustomAuthorizerV2Request.Cookies

I am unable to get the Cookies portion to populate in the AuthorizerV2Request object.

I am able to see cookies under the cookie Header, but the Cookies object itself seems to have no function.

[weaverjess]

While HTTP Headers are case-insensitive, I've heard that casing can be an issue with API GW... not sure if that is what is going on, but effectively right now I am doing something like the below to just get a slice of native http.Cookie to work with.

func ParseCookies(headers map[string]string) []*http.Cookie {
	header := http.Header{}

	val, ok := headers["Cookie"]
	if ok {
		header.Add("Cookie", val)
	}

	val, ok = headers["cookie"]
	if ok {
		header.Add("Cookie", val)
	}

	request := http.Request{Header: header}

	return request.Cookies()
}

I think though it would be event better if the event exposed a "GetCookie" method, something like:

func GetCookie(headers map[string]string, cookieName string) (*http.Cookie, error) {
	header := http.Header{}

	val, ok := headers["Cookie"]
	if ok {
		header.Add("Cookie", val)
	}

	val, ok = headers["cookie"]
	if ok {
		header.Add("Cookie", val)
	}

	request := http.Request{Header: header}

	return request.Cookie(cookieName)
}

Which could be used to try and get a cookie, or idiomatically an error