Hands-On Microservices with Rust

Mailer

Our application also has a mailer microservice that sends notifications to users. It needs the utils module for testing only:

mod utils;use self::utils::{Method, WebApi};

Put the preceding code into a new mailer.rs file and add a healthcheck to test that a microservice instance is alive:

#[test]fn mails_healthcheck() {    let mut api = WebApi::mailer();    api.healthcheck("/", "Mailer Microservice");}

The Mailer microservice also doesn't need to know users to notify them. It only requires an email address and some content. This microservice will send confirmation codes to a user, so let's simulate this behavior in our send_mail test:

#[test]fn send_mail() {    let mut api = WebApi::mailer(); let email = utils::rand_str() + "@example.com"; ...