January 2019
Intermediate to advanced
520 pages
14h 32m
English
Content preview from Hands-On Microservices with Rust
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Implementing a service function
Our service function will support two kinds of requests:
- GET requests to the / path with an index page response
- Other requests with a NOT_FOUND response
To detect the corresponding method and path, we can use the methods of the Request object. See the following code:
fn microservice_handler(req: Request<Body>) -> impl Future<Item=Response<Body>, Error=Error>{ match (req.method(), req.uri().path()) { (&Method::GET, "/") => { future::ok(Response::new(INDEX.into())) }, _ => { let response = Response::builder() .status(StatusCode::NOT_FOUND) .body(Body::empty()) .unwrap(); future::ok(response) }, }}
I used a match expression to detect the corresponding method returned from the req.method() function, and also ...
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