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# relayr
🏃♂️ Effortless delegated cron jobs — scheduled tasks in Rust, made simple.
relayr makes it easy to register cron jobs across your codebase without manual boilerplate. Just annotate functions with a macro, and relayr will auto-discover and schedule them at runtime!
*This crate is a wrapper around [`async-cron-scheduler`](https://crates.io/crates/async-cron-scheduler) to use it in a delegated flavour. If you aren't looking for the delegated way of defining your cron jobs it's probably better for you to use that.*
⸻
## 🖤 Features
✅ Register cron jobs with a simple macro<br>
✅ Fully async<br>
✅ No need to manually wire up each job<br>
✅ Registration happens at compile time thanks to [`inventory`](https://crates.io/crates/inventory)<br>
✅ Validates cron patterns at compile time<br>
⸻
## 📦 Installation
Add to your Cargo.toml:
```toml
relayr = "0.4"
```
This will bring in the core scheduler, inventory, and macro support.
⸻
## 🧪 Example
```rust
use relayr::prelude::*;
use chrono::Local;
#[relayr::cron("1/1 * * * * *")]
async fn print_every_second(_: JobId) -> anyhow::Result<()> {
println!("🖤 Hello from relayr 0.4.0!");
Ok(())
}
#[tokio::main]
async fn main() {
relayr::run::<Local>().await
}
```
## ✅ That’s it!
When `relayr::run() starts`, it automatically picks up all functions decorated with `#[relayr::cron(...)]` and schedules them.
⸻
## 🧠 How it Works
- You annotate functions with `#[relayr::cron("cron pattern")]`.
- Under the hood, the macro registers your function in a global inventory.
- When `relayr::run()` is called:
- It spins up a scheduler.
- It iterates over all discovered Cron items.
- It inserts them into the scheduler automatically.
No manual wiring. No giant match blocks. Just clean, delegated jobs.
⸻
## 📁 Repo & Contributions
📦 **Crate:** [https://crates.io/crates/relayr](https://crates.io/crates/relayr)<br>
🛠️ **Repo:** [https://github.com/dsplce-co/relayr](https://github.com/dsplce-co/relayr)
PRs welcome! Let’s make scheduled Rust ✨clean and effortless.
⸻
## 📄 License
MIT or Apache-2.0, at your option.