greyhound 0.0.1

al3x's personal backend framework
Documentation 
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use crate::{http, request::Request, server::state::State};
use async_std::future::Future;
use async_trait::async_trait;
use http_types::Response;

pub type Endpoint<S> = dyn Handler<Request<S>, HandlerOutput>;

pub type BoxedEnpoint<S> = Box<Endpoint<S>>;

pub type HandlerOutput = Result<Response, http::Error>;

#[async_trait]
pub trait Handler<Args, O>: Send + Sync + 'static {
	async fn call(&self, args: Args) -> O;
}

#[async_trait]
impl<FN, FT, S: State> Handler<Request<S>, HandlerOutput> for FN
where
	FN: Fn(Request<S>) -> FT + Send + Sync + 'static,
	FT: Future<Output = HandlerOutput> + Send + 'static,
{
	async fn call(&self, args: Request<S>) -> HandlerOutput {
		(self)(args).await
	}
}

#[async_trait]
impl<S: State> Handler<Request<S>, HandlerOutput> for BoxedEnpoint<S> {
	async fn call(&self, args: Request<S>) -> HandlerOutput {
		self.as_ref().call(args).await
	}
}