Function tower::util::option_layer

pub fn option_layer<L>(layer: Option<L>) -> Either<L, Identity> 

Convert an Option<Layer> into a Layer.

use tower::util::option_layer;
// Layer to apply a timeout if configured
let maybe_timeout = option_layer(timeout.map(TimeoutLayer::new));

ServiceBuilder::new()
    .layer(maybe_timeout)
    .service(svc);