37 lines
1.3 KiB
Markdown
37 lines
1.3 KiB
Markdown
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# corex-event
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A unified events & message bus abstraction so component-to-component (or
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service-to-service) communication isn't locked to one transport.
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- **In-memory dispatcher** (default) — `tokio::sync::broadcast`-backed
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pub/sub for communication inside a single process (monolith).
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- **Distributed broker backends** — RabbitMQ (`amqp`) and NATS (`nats`)
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behind the same `EventBus` trait, so swapping the backend doesn't change
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handler code.
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- **Typed convenience** — `TypedEventBus` layers JSON encoding on top.
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## Features
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- `mem` (default) — in-memory dispatcher.
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- `amqp` — RabbitMQ via `lapin` (pure Rust AMQP 0.9.1 client).
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- `nats` — NATS via `async-nats`.
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## Usage
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```rust
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use corex_event::{InMemoryEventBus, TypedEventBus};
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use serde::{Deserialize, Serialize};
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#[derive(Debug, Serialize, Deserialize, PartialEq)]
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struct OrderCreated { id: u64 }
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let bus = TypedEventBus::new(InMemoryEventBus::default());
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let mut sub = bus.subscribe::<OrderCreated>("orders").await?;
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bus.publish("orders", &OrderCreated { id: 42 }).await?;
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let event = sub.recv().await?;
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```
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Swap `InMemoryEventBus::default()` for `AmqpEventBus::connect(url, "exchange").await?`
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or `NatsEventBus::connect(url).await?` to move to a distributed broker without
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touching handler code.
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