Hands-On Microservices with Rust

Request and response types

The main struct is Unicorn, which contains the creature we will ride:

#[derive(Clone, Serialize)] #[serde(rename_all = "PascalCase")] struct Unicorn {     name: String,     color: String,     gender: String, }

Every Unicorn has a name, color, and gender. We will store these values as items in a DynamoDB record. To simplify the creation of the instance in the code, we will add the following constructor:

impl Unicorn {     fn new(name: &str, color: &str, gender: &str) -> Self {         Unicorn {             name: name.to_owned(),             color: color.to_owned(),             gender: gender.to_owned(),         }     } }

You may ask why we don't represent color and gender with enumerations. It's possible, but you have to be sure that the serialized values are exactly what you want.