elfo 0.2.0-alpha.21

An asynchronous distributed actor framework with robust observability
Documentation 
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#![allow(missing_docs)]
#![cfg(feature = "test-util")]

use elfo::{
    config::AnyConfig,
    errors::TrySendError,
    messages::ValidateConfig,
    prelude::*,
    routers::{MapRouter, Outcome, Singleton},
};
use tracing::info;

#[message]
struct StartSingleton;

#[tokio::test]
async fn singleton_actor_with_default_validate_config() {
    let blueprint = ActorGroup::new().exec(move |mut ctx| async move {
        while let Some(envelope) = ctx.recv().await {
            msg!(match envelope {
                StartSingleton => continue,
                (ValidateConfig { .. }, token) => {
                    drop(token);
                    panic!("did not expect ValidateConfig message");
                }
                _ => unreachable!(),
            });
        }
    });

    let mut proxy = elfo::test::proxy(blueprint, AnyConfig::default()).await;

    proxy.send(StartSingleton).await;
    proxy.sync().await;
    info!("actor started");

    let result = proxy.try_send(ValidateConfig::new(AnyConfig::default()));
    assert!(matches!(result, Err(TrySendError::Closed(..))));
}

#[tokio::test]
async fn singleton_actor_with_custom_validate_config() {
    let blueprint = ActorGroup::new()
        .router(MapRouter::new(|e| {
            msg!(match e {
                StartSingleton => Outcome::Unicast(Singleton),
                ValidateConfig => Outcome::GentleUnicast(Singleton),
                _ => Outcome::Default,
            })
        }))
        .exec(move |mut ctx| async move {
            while let Some(envelope) = ctx.recv().await {
                msg!(match envelope {
                    StartSingleton => continue,
                    (ValidateConfig { .. }, token) => {
                        ctx.respond(token, Ok(()));
                    }
                    _ => unreachable!(),
                });
            }
        });

    let mut proxy = elfo::test::proxy(blueprint, AnyConfig::default()).await;

    proxy.send(StartSingleton).await;
    proxy.sync().await;
    info!("actor started");

    proxy
        .request(ValidateConfig::new(AnyConfig::default()))
        .await
        .unwrap();
}

#[message]
struct StartGroupMember(u32);

#[tokio::test]
async fn actor_group_with_default_validate_config() {
    let blueprint = ActorGroup::new()
        .router(MapRouter::new(|e| {
            msg!(match e {
                StartGroupMember(no) => Outcome::Unicast(*no),
                _ => Outcome::Default,
            })
        }))
        .exec(move |mut ctx| async move {
            while let Some(envelope) = ctx.recv().await {
                msg!(match envelope {
                    StartGroupMember(..) => continue,
                    (ValidateConfig { .. }, token) => {
                        drop(token);
                        panic!("did not expect ValidateConfig message");
                    }
                    _ => unreachable!(),
                });
            }
        });

    let mut proxy = elfo::test::proxy(blueprint, AnyConfig::default()).await;

    proxy.send(StartGroupMember(0)).await;
    proxy.send(StartGroupMember(1)).await;
    proxy.send(StartGroupMember(2)).await;
    proxy.sync().await;
    info!("actors started");

    let result = proxy.try_send(ValidateConfig::new(AnyConfig::default()));
    assert!(matches!(result, Err(TrySendError::Closed(..))));
}

#[tokio::test]
async fn actor_group_with_custom_validate_config() {
    let blueprint = ActorGroup::new()
        .router(MapRouter::new(|e| {
            msg!(match e {
                StartGroupMember(no) => Outcome::Unicast(*no),
                ValidateConfig => Outcome::Broadcast,
                _ => Outcome::Default,
            })
        }))
        .exec(move |mut ctx| async move {
            while let Some(envelope) = ctx.recv().await {
                msg!(match envelope {
                    StartGroupMember(..) => continue,
                    (ValidateConfig { .. }, token) => {
                        ctx.respond(token, Ok(()));
                    }
                    _ => unreachable!(),
                });
            }
        });

    let mut proxy = elfo::test::proxy(blueprint, AnyConfig::default()).await;

    proxy.send(StartGroupMember(0)).await;
    proxy.send(StartGroupMember(1)).await;
    proxy.send(StartGroupMember(2)).await;
    proxy.sync().await;
    info!("actors started");

    proxy
        .request(ValidateConfig::new(AnyConfig::default()))
        .await
        .unwrap();
}