Dataloader

Rust implementation of Facebook's DataLoader using futures and tokio-core.

Status

This project is a work in progress. - [x] Batching load requests - [ ] Cache load result

Installation

Add fake to your Cargo.toml toml [dependencies] futures = "0.1" dataloader = { git = "https://github.com/cksac/dataloader-rs" }

Usage

```rust extern crate futures; extern crate dataloader;

use dataloader::{Loader, BatchFn, LoadError}; use futures::Future; use futures::future::ok;

struct Batcher; impl BatchFn for Batcher { type Error = LoadError; fn load(&self, keys: &Vec) -> Box, Error = Self::Error>> { println!("load batch with keys: {:?}", keys); ok(keys.into_iter().map(|v| v * 10).collect()).boxed() } }

fn main() { let loader = Loader::new(Batcher); let v1 = loader.load(1); let v2 = loader.load(2); assert_eq!((10, 20), v1.join(v2).wait().unwrap()); } ```