Cloudfront: setting s3 path difference from Origin

Question

Cache behaviour setting, i use

s3/*

to redirect request to s3 folder, but i don't want to place my images under a folder named s3 but right under s3 bucket to redirect like this:

xxxx.cloudfront.com/s3/images/1.png  -> bucket_name/images/1.png

not

xxxx.cloudfront.com/s3/images/1.png  -> bucket_name/s3/images/1.png

Please help to show me how to config like this.

Answer 1

You can do this with lambdas here's the relevant lambda snippet.

exports.handler = (event, context, callback) => {
    // this is the request we want to re-map
    var request = event.Records[0].cf.request;

    // the request has a 'uri' property which is the value we want to overwrite
    // rewrite the url applying your custom logic
    request.uri = 'some custom logic here to rewrite the url';    

    // quit the lambda and let the request chain continue
    callback( null, request );    
};

Answer 2

I don't think this is possible. An Origin Path can redirect to a subdirectory, (eg index.htm -> production/index.htm) but CloudFront can't strip out path portions.

See documentation: Origin Path

Some options:

• Use a separate distribution instead of prefixing paths with s3
• Just put s3/ at the front of your filenames (and actually use the full path)