Hands-On Microservices with Rust

Deserializing requests

The service will support complex requests in which you can specify a distribution and parameters. Let's add this enumeration to the source file:

#[derive(Deserialize)]enum RngRequest {    Uniform {        range: Range<i32>,    },    Normal {        mean: f64,        std_dev: f64,    },    Bernoulli {        p: f64,    },}

You may want to know what the serialized value looks like. serde_derive provides extra attributes, which you can use to tweak the serialization format. The current deserializer expects a RngRequest instance, as follows:

RngRequest::Uniform {        range: 1..10,}

This will be represented as the string:

{ "Uniform": { "range": { "start": 1, "end": 10 } } }

If you create your own protocol from scratch, there won't be any problems with the layout, because ...