Hands-On Microservices with Rust

Requests handler

Before we implement a handler of HTTP requests, let's add a function that uses State to send a message to CountActor and use the returned value to print it with LogActor. Look at the following function:

fn count_up(state: &State, path: &str) -> impl Future<Item=(), Error=Error> {    let path = path.to_string();    let log = state.log.clone();    state.count.send(Count(path.clone()))        .and_then(move |value| {            let message = format!("total requests for '{}' is {}", path, value);            log.send(Log(message))        })        .map_err(|err| other(err.compat()))}

We converted the path into a String, because we need this type for the Count message, and to move it to a Future that sends a Log message to LogActor. Also, we have to clone Addr to LogActor, because ...