uniswapx-sdk-rs

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uniswapx-sdk-rs

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A crate for consuming, and coordinating filler services for UniswapX orders.

see `cargo doc --open` to see the full docs

The crate will have 3 main parts, api, server and core.

- api:
  - subscribers and clients are defined here. There is a default uniswap client implementation in `api/src/uniswap/`
  - you can wrap any api by implementing the async trait `Client<SignedOrder>` over it
- core:
  - Alloy-rs structs live here
  - contains validations in the style of [the UniswapX-sdk](https://github.com/Uniswap/uniswapx-sdk/tree/main)
  - an order cache that can be shared between subscribers
  - order builders (coming soon)
- server (coming soon)
  - A tokio friendly UniswapX order api framework

An example setup

```rust
use ethers::providers::{Http, Middleware};
use futures::StreamExt;
use std::sync::Arc;
use uniswapx_sdk_api::{subscriber::OrderSubscriber, uniswap::UniswapClient};
use uniswapx_sdk_core::{
    order::SignedOrder,
    utils::{spawn_with_shutdown, OrderCache},
};

const PROVIDER_URL: &str = "";

#[tokio::main]
async fn main() {
    tracing_subscriber::fmt::init();

let provider = Arc::new(
        ethers::providers::Provider::<Http>::try_from(PROVIDER_URL).expect("provider url to parse"),
    );

// a thread safe cache that will flush itself every 10 seconds
    let cache = OrderCache::new(provider.clone(), 10);

// a client for chain id = 1
    let client = UniswapClient::new(1);

// could be made into a util function
    // spawn_order_handler or something
    spawn_with_shutdown(async move {
        // a stream of unvalidated orders
        let mut sub = OrderSubscriber::subscribe(cache.clone(), client, 5);

while let Some(order) = sub.next().await {
            tokio::spawn(handle_order(order, provider.clone()));
        }
    })
    .await
    .unwrap();
}

async fn handle_order<M: Middleware + 'static>(order: SignedOrder, provider: Arc<M>) {
    println!("reactor: {:?}", order.reactor_address());

match order.validate_ethers(provider.clone()).await {
        Ok(ans) => {
            println!("Isvalid? {:?}", ans);
            println!("deadline: {:?}", order.deadline());

// do stuff with order
        }
        Err(e) => {
            println!("error: {:?}", e);
        }
    }
}
```

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