Hands-On Microservices with Rust

Actor

Actor is a struct that implements the Actor trait. We'll use a struct with HashMap inside to count the number of incoming strings:

pub struct CountActor {    counter: HashMap<String, Value>,}impl CountActor {    pub fn new() -> Self {        Self {            counter: HashMap::new(),        }    }}

We added a new method to create an empty CountActor instance.

Now we can implement the Actor trait for our struct. The implementation is simple:

impl Actor for CountActor {    type Context = Context<Self>;}

We specify a context and set it to the Context type. The actor trait contains the default implementation of different methods that help you to react on lifetime events of your actor:

• started: This is called when the Actor instance starts.
• stopping: This is called when the  ...