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https://github.com/igumnoff/gabriel2
Gabriel2: Indeed, an actor library based on Tokio, written in Rust
https://github.com/igumnoff/gabriel2
Last synced: 3 months ago
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Gabriel2: Indeed, an actor library based on Tokio, written in Rust
- Host: GitHub
- URL: https://github.com/igumnoff/gabriel2
- Owner: igumnoff
- License: gpl-3.0
- Created: 2024-03-19T02:54:22.000Z (8 months ago)
- Default Branch: main
- Last Pushed: 2024-07-12T06:02:59.000Z (4 months ago)
- Last Synced: 2024-07-13T00:21:47.655Z (4 months ago)
- Language: Rust
- Homepage: https://docs.rs/gabriel2
- Size: 1.63 MB
- Stars: 18
- Watchers: 5
- Forks: 5
- Open Issues: 6
-
Metadata Files:
- Readme: README.md
- License: LICENSE
Awesome Lists containing this project
- awesome-rust - igumnoff/gabriel2 - Gabriel2: An actor-model library based on Tokio (Libraries / Asynchronous)
- fucking-awesome-rust - igumnoff/gabriel2 - Gabriel2: An actor-model library based on Tokio (Libraries / Asynchronous)
- fucking-awesome-rust - igumnoff/gabriel2 - Gabriel2: An actor-model library based on Tokio (Libraries / Asynchronous)
README
# Gabriel2
Gabriel2: Indeed, an actor library based on Tokio, written in Rust
## Features
- [x] Async for sending messages
- [x] Async for messages processing in actor
- [x] Support messaging like send and forget
- [x] Support messaging like send and wait response
- [x] Mutable state of actor
- [x] Self reference in actor from context
- [x] Actor lifecycle (pre_start, pre_stop)
- [x] Sink to actor
- [x] Stream from actor
- [x] Remote Actor
- [x] Event Bus
- [x] Load Balancer
## Usage
Cargo.toml
```toml
[dependencies]
gabriel2 = { version = "1.5.0", features = ["remote", "sink-stream", "broadcast", "balancer"] }
```
echo.rs
```rust
use std::sync::Arc;
use gabriel2::*;
use bincode::{Decode, Encode};
use derive_more::{Display, Error};
#[derive(Debug)]
pub struct EchoActor;
#[derive(Debug)]
pub enum EchoMessage {
Ping,
}
#[derive(Debug)]
pub enum EchoResponse {
Pong {counter: u32},
}
#[derive(Debug,Clone)]
pub struct EchoState {
pub counter: u32,
}
#[derive(Debug, Display, Error)]
pub enum EchoError {
#[display(fmt = "Unknown error")]
Unknown,
}
impl From for EchoError {
fn from(_err: std::io::Error) -> Self {
EchoError::Unknown
}
}
impl Handler for EchoActor {
type Actor = EchoActor;
type Message = EchoMessage;
type State = EchoState;
type Response = EchoResponse;
type Error = EchoError;
async fn receive(&self, ctx: Arc>) -> Result {
match ctx.mgs {
EchoMessage::Ping => {
println!("Received Ping");
let mut state_lock = ctx.state.lock().await;
state_lock.counter += 1;
if state_lock.counter > 10 {
Err(EchoError::Unknown)
} else {
Ok(EchoResponse::Pong{counter: state_lock.counter})
}
}
}
}
}
```
main.rs
```rust
#[tokio::main]
async fn main() -> Result<(), EchoError> {
let state = EchoState {
counter: 0,
};
let echo_ref = ActorRef::new("echo", EchoActor {}, state, 100000).await?;
println!("Sent Ping");
echo_ref.send(EchoMessage::Ping).await?;
println!("Sent Ping and ask response");
let pong = echo_ref.ask(EchoMessage::Ping).await?;
println!("Got {:?}", pong);
_ = echo_ref.stop().await;
Ok(())
}
```
Example output:
```text
Sent Ping
Sent Ping and ask response
Received Ping
Received Ping
Got Pong { counter: 2 }
```
Example sources: https://github.com/igumnoff/gabriel2/tree/main/test
## Sink
```rust
#[tokio::main]
async fn main() -> Result<(), EchoError> {
let state = EchoState {
counter: 0,
};
let echo_ref = ActorRef::new("echo", crate::echo::EchoActor {}, state, 100000).await?;
let echo_sink = ActorSink::sink(echo_ref.clone());
let message_stream = futures::stream::iter(vec![EchoMessage::Ping, EchoMessage::Ping, EchoMessage::Ping]).map(Ok);
_ = message_stream.forward(echo_sink).await;
tokio::time::sleep(tokio::time::Duration::from_secs(1)).await;
Ok(())
}
```
Example output:
```
Received Ping
Received Ping
Received Ping
```
### Stream
```rust
#[tokio::main]
async fn main() -> Result<(), EchoError> {
let state = EchoState {
counter: 0,
};
let echo_ref = ActorRef::new("echo", crate::echo::EchoActor {}, state, 100000).await?;
let (echo_sink, echo_stream) = ActorSink::sink_stream(echo_ref.clone());
let message_stream = futures::stream::iter(vec![EchoMessage::Ping, EchoMessage::Ping, EchoMessage::Ping]).map(Ok);
_ = message_stream.forward(echo_sink).await;
echo_stream.for_each(|message| async move {
println!("Got {:?}", message.unwrap());
}).await;
tokio::time::sleep(tokio::time::Duration::from_secs(1)).await;
Ok(())
}
```
Example output:
```
Received Ping
Received Ping
Received Ping
Got Pong { counter: 1 }
Got Pong { counter: 2 }
Got Pong { counter: 3 }
```
## Remote
Preparations for remote:
Add Encode, Decode from "bincode" to derive(..) for EchoActor, EchoMessage, EchoResponse, EchoState and EchoError
Remote version:
```rust
#[tokio::main]
async fn main() -> Result<(), EchoError> {
let state = EchoState {
counter: 0,
};
let echo_ref = ActorRef::new("echo", crate::echo::EchoActor {}, state, 100000).await?;
let echo_server = ActorServer::new("echo_server", "127.0.0.1", 9001, echo_ref).await?;
let echo_client: Arc> = ActorClient::new("echo_client", "127.0.0.1", 9001).await?;
println!("Sent Ping");
echo_client.send(EchoMessage::Ping).await?;
println!("Sent Ping and ask response");
let pong = echo_client.ask(EchoMessage::Ping).await?;
println!("Got {:?}", pong);
_ = echo_client.stop().await;
_ = echo_server.stop().await;
Ok(())
}
```
### Event Bus
```rust
#[tokio::main]
async fn main() -> Result<(), EchoError> {
let state = EchoState {
counter: 0,
};
#[derive(Debug, Copy, Clone)]
enum EventElement {
Fire,
Water
}
let echo_ref = ActorRef::new("echo", crate::echo::EchoActor {}, state, 100000).await?;
let event_bus: Arc> = Arc::new(EventBus::new());
let subscriber_id = event_bus.subscribe(move |event: EventElement| {
async move {
match event {
EventElement::Fire => {
let _ = echo_ref.send(EchoMessage::Ping).await;
()
},
_ => ()
}
}}).await;
event_bus.publish(EventElement::Fire).await;
tokio::time::sleep(tokio::time::Duration::from_secs(1)).await;
event_bus.unsubscribe(subscriber_id).await;
Ok(())
}
```
### Load Balancer
```rust
#[tokio::main]
async fn main() -> Result<(), EchoError> {
let echo_load_balancer: Arc> =
LoadBalancer::new("echo_load_balancer", 10, |id: usize| {
Box::pin(async move {
let user: Arc<
ActorRef,
> = ActorRef::new(
format!("echo-{}", id),
EchoActor {},
EchoState { counter: 0 },
10000,
)
.await?;
Ok(user)
})
})
.await
.unwrap();
for _ in 0..30 {
echo_load_balancer.send(EchoMessage::Ping).await?;
}
Ok(())
}
```
## Contributing
I would love to see contributions from the community. If you experience bugs, feel free to open an issue. If you would like to implement a new feature or bug fix, please follow the steps:
1. Read "[Contributor License Agreement (CLA)](https://github.com/igumnoff/gabriel2/blob/main/CLA)"
2. Contact with me via telegram @ievkz or discord @igumnovnsk
3. Confirm e-mail invitation in repository
4. Do "git clone" (You don't need to fork!)
5. Create branch with your assigned issue
6. Create pull request to main branch