AppSync use / access CloudFront Viewer Headers

Question

CloudFront has a number of headers regarding viewer information that we would like to access in our AppSync vtl / resolvers, see: https://docs.aws.amazon.com/AmazonCloudFront/latest/DeveloperGuide/using-cloudfront-headers.html

Specifically, we'd like to use CloudFront-Viewer-Country-Region

In a 'normal' Cloudfront -> S3 origin for example, we would add an Origin request policy to forward the headers on.

How is this possible in Appsync please?

Answer

Hey the way I found to solve it is to put Cloudfront distribution in front of the app-sync one.
You can configure this new CF distribution to include the headers so they can be used in the resolvers.

P.S.: AWS it would be nice to be able to to configure the header behavior of the CF you guys create for the AppSync instance so we do no need to do this :)

Answer

You can access all request headers via the [$context.request.headers](https://docs.aws.amazon.com/appsync/latest/devguide/resolver-context-reference.html#aws-appsync-resolver-context-reference-identity) construct.

AppSync use / access CloudFront Viewer Headers

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