Implement a log handler

I would like to be able to log within a route, like in the example below:

{
    layer4 {
        :443 {
            @example tls sni example.com
            route @example {
                proxy example.com:443
            }
            @example2 tls sni example2.com
            route @example2 {
                log {
                    level DEBUG
                    format ...
                }
                proxy example2.com:443
            }
        }
    }
}

I'm currently doing this logging within the global options block, but that applies it to all routes, making it unnecessarily excessive.