88 lines
2.5 KiB
Rust
88 lines
2.5 KiB
Rust
//! Utilities used to interact with the Tower ecosystem.
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//!
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//! This module provides `Connect` which hook-ins into the Tower ecosystem.
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use std::error::Error as StdError;
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use std::future::Future;
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use std::marker::PhantomData;
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use super::conn::{Builder, SendRequest};
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use crate::{
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body::HttpBody,
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common::{task, Pin, Poll},
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service::{MakeConnection, Service},
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};
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/// Creates a connection via `SendRequest`.
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///
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/// This accepts a `hyper::client::conn::Builder` and provides
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/// a `MakeService` implementation to create connections from some
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/// target `T`.
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#[derive(Debug)]
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pub struct Connect<C, B, T> {
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inner: C,
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builder: Builder,
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_pd: PhantomData<fn(T, B)>,
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}
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impl<C, B, T> Connect<C, B, T> {
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/// Create a new `Connect` with some inner connector `C` and a connection
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/// builder.
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pub fn new(inner: C, builder: Builder) -> Self {
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Self {
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inner,
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builder,
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_pd: PhantomData,
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}
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}
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}
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impl<C, B, T> Service<T> for Connect<C, B, T>
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where
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C: MakeConnection<T>,
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C::Connection: Unpin + Send + 'static,
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C::Future: Send + 'static,
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C::Error: Into<Box<dyn StdError + Send + Sync>> + Send,
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B: HttpBody + Unpin + Send + 'static,
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B::Data: Send + Unpin,
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B::Error: Into<Box<dyn StdError + Send + Sync>>,
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{
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type Response = SendRequest<B>;
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type Error = crate::Error;
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type Future =
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Pin<Box<dyn Future<Output = Result<Self::Response, Self::Error>> + Send + 'static>>;
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fn poll_ready(&mut self, cx: &mut task::Context<'_>) -> Poll<Result<(), Self::Error>> {
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self.inner
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.poll_ready(cx)
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.map_err(|e| crate::Error::new(crate::error::Kind::Connect).with(e.into()))
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}
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fn call(&mut self, req: T) -> Self::Future {
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let builder = self.builder.clone();
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let io = self.inner.make_connection(req);
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let fut = async move {
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match io.await {
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Ok(io) => match builder.handshake(io).await {
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Ok((sr, conn)) => {
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builder.exec.execute(async move {
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if let Err(e) = conn.await {
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debug!("connection error: {:?}", e);
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}
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});
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Ok(sr)
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}
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Err(e) => Err(e),
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},
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Err(e) => {
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let err = crate::Error::new(crate::error::Kind::Connect).with(e.into());
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Err(err)
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}
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}
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};
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Box::pin(fut)
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}
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}
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