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use std::error::Error as StdError;
use futures::{Future, IntoFuture};
use body::Payload;
use super::Service;
pub trait NewService {
type ReqBody: Payload;
type ResBody: Payload;
type Error: Into<Box<StdError + Send + Sync>>;
type Service: Service<
ReqBody=Self::ReqBody,
ResBody=Self::ResBody,
Error=Self::Error,
>;
type Future: Future<Item=Self::Service, Error=Self::InitError>;
type InitError: Into<Box<StdError + Send + Sync>>;
fn new_service(&self) -> Self::Future;
}
impl<F, R, S> NewService for F
where
F: Fn() -> R,
R: IntoFuture<Item=S>,
R::Error: Into<Box<StdError + Send + Sync>>,
S: Service,
{
type ReqBody = S::ReqBody;
type ResBody = S::ResBody;
type Error = S::Error;
type Service = S;
type Future = R::Future;
type InitError = R::Error;
fn new_service(&self) -> Self::Future {
(*self)().into_future()
}
}