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use crate::codec::{Encode, Encoder, Streaming}; use crate::generic::server::{server_streaming, ServerStreamingService}; use crate::Body; use futures::{try_ready, Future, Poll}; use std::fmt; pub struct ResponseFuture<T, B, R> where T: ServerStreamingService<R>, B: Body, R: prost::Message + Default, { inner: Inner<T, T::Response, R, B>, } type Inner<T, U, V, B> = server_streaming::ResponseFuture<T, Encoder<U>, Streaming<V, B>>; impl<T, B, R> ResponseFuture<T, B, R> where T: ServerStreamingService<R>, R: prost::Message + Default, T::Response: prost::Message, B: Body, { pub(crate) fn new(inner: Inner<T, T::Response, R, B>) -> Self { ResponseFuture { inner } } } impl<T, B, R> Future for ResponseFuture<T, B, R> where T: ServerStreamingService<R>, R: prost::Message + Default, T::Response: prost::Message, B: Body, { type Item = http::Response<Encode<T::ResponseStream>>; type Error = crate::error::Never; fn poll(&mut self) -> Poll<Self::Item, Self::Error> { let response = try_ready!(self.inner.poll()); let response = response.map(Encode::new); Ok(response.into()) } } impl<T, B, R> fmt::Debug for ResponseFuture<T, B, R> where T: ServerStreamingService<R> + fmt::Debug, T::Response: fmt::Debug, T::ResponseStream: fmt::Debug, T::Future: fmt::Debug, B: Body + fmt::Debug, B::Data: fmt::Debug, R: prost::Message + Default, { fn fmt(&self, fmt: &mut fmt::Formatter<'_>) -> fmt::Result { fmt.debug_struct("server_streaming::ResponseFuture") .field("inner", &self.inner) .finish() } }