use std::future::Future;
use std::pin::Pin;
use std::task::Context;
use std::task::Poll;
use pin_project_lite::pin_project;
pin_project! {
#[derive(Debug)]
pub(crate) struct ResponseFuture<T> {
#[pin]
response: T,
}
}
impl<T> ResponseFuture<T> {
pub(crate) fn new(response: T) -> Self {
ResponseFuture { response }
}
}
impl<F, T, E> Future for ResponseFuture<F>
where
F: Future<Output = Result<T, E>>,
E: Into<tower::BoxError>,
{
type Output = Result<T, tower::BoxError>;
fn poll(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Self::Output> {
let this = self.project();
match this.response.poll(cx) {
Poll::Ready(v) => Poll::Ready(v.map_err(Into::into)),
Poll::Pending => Poll::Pending,
}
}
}