mirror of
https://github.com/denoland/deno.git
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535 lines
14 KiB
Rust
535 lines
14 KiB
Rust
// Copyright 2018-2021 the Deno authors. All rights reserved. MIT license.
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use crate::ops::io::TcpStreamResource;
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use crate::ops::io::TlsServerStreamResource;
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use deno_core::error::bad_resource_id;
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use deno_core::error::null_opbuf;
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use deno_core::error::type_error;
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use deno_core::error::AnyError;
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use deno_core::futures::future::poll_fn;
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use deno_core::futures::FutureExt;
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use deno_core::futures::Stream;
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use deno_core::futures::StreamExt;
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use deno_core::AsyncRefCell;
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use deno_core::CancelFuture;
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use deno_core::CancelHandle;
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use deno_core::CancelTryFuture;
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use deno_core::OpState;
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use deno_core::RcRef;
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use deno_core::Resource;
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use deno_core::ResourceId;
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use deno_core::ZeroCopyBuf;
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use hyper::body::HttpBody;
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use hyper::http;
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use hyper::server::conn::Connection;
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use hyper::server::conn::Http;
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use hyper::service::Service as HyperService;
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use hyper::Body;
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use hyper::Request;
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use hyper::Response;
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use serde::Deserialize;
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use serde::Serialize;
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use std::borrow::Cow;
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use std::cell::RefCell;
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use std::future::Future;
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use std::pin::Pin;
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use std::rc::Rc;
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use std::task::Context;
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use std::task::Poll;
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use tokio::io::AsyncReadExt;
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use tokio::net::TcpStream;
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use tokio::sync::oneshot;
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use tokio_rustls::server::TlsStream;
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use tokio_util::io::StreamReader;
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pub fn init(rt: &mut deno_core::JsRuntime) {
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super::reg_sync(rt, "op_http_start", op_http_start);
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super::reg_async(rt, "op_http_request_next", op_http_request_next);
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super::reg_async(rt, "op_http_request_read", op_http_request_read);
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super::reg_async(rt, "op_http_response", op_http_response);
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super::reg_async(rt, "op_http_response_write", op_http_response_write);
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super::reg_async(rt, "op_http_response_close", op_http_response_close);
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}
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struct ServiceInner {
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request: Request<Body>,
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response_tx: oneshot::Sender<Response<Body>>,
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}
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#[derive(Clone, Default)]
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struct Service {
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inner: Rc<RefCell<Option<ServiceInner>>>,
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}
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impl HyperService<Request<Body>> for Service {
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type Response = Response<Body>;
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type Error = http::Error;
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#[allow(clippy::type_complexity)]
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type Future =
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Pin<Box<dyn Future<Output = Result<Self::Response, Self::Error>>>>;
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fn poll_ready(
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&mut self,
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_cx: &mut Context<'_>,
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) -> Poll<Result<(), Self::Error>> {
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if self.inner.borrow().is_some() {
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Poll::Pending
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} else {
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Poll::Ready(Ok(()))
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}
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}
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fn call(&mut self, req: Request<Body>) -> Self::Future {
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let (resp_tx, resp_rx) = oneshot::channel();
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self.inner.borrow_mut().replace(ServiceInner {
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request: req,
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response_tx: resp_tx,
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});
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async move { Ok(resp_rx.await.unwrap()) }.boxed_local()
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}
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}
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enum ConnType {
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Tcp(Rc<RefCell<Connection<TcpStream, Service, LocalExecutor>>>),
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Tls(Rc<RefCell<Connection<TlsStream<TcpStream>, Service, LocalExecutor>>>),
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}
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struct ConnResource {
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hyper_connection: ConnType,
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deno_service: Service,
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}
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impl ConnResource {
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// TODO(ry) impl Future for ConnResource?
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fn poll(&self, cx: &mut Context<'_>) -> Poll<Result<(), AnyError>> {
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match &self.hyper_connection {
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ConnType::Tcp(c) => c.borrow_mut().poll_unpin(cx),
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ConnType::Tls(c) => c.borrow_mut().poll_unpin(cx),
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}
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.map_err(AnyError::from)
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}
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}
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impl Resource for ConnResource {
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fn name(&self) -> Cow<str> {
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"httpConnection".into()
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}
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}
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// We use a tuple instead of struct to avoid serialization overhead of the keys.
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#[derive(Serialize)]
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#[serde(rename_all = "camelCase")]
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struct NextRequestResponse(
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// request_body_rid:
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Option<ResourceId>,
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// response_sender_rid:
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ResourceId,
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// method:
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String,
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// headers:
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Vec<(String, String)>,
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// url:
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String,
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);
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async fn op_http_request_next(
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state: Rc<RefCell<OpState>>,
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conn_rid: ResourceId,
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_data: Option<ZeroCopyBuf>,
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) -> Result<Option<NextRequestResponse>, AnyError> {
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let conn_resource = state
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.borrow()
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.resource_table
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.get::<ConnResource>(conn_rid)
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.ok_or_else(bad_resource_id)?;
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poll_fn(|cx| {
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let connection_closed = match conn_resource.poll(cx) {
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Poll::Pending => false,
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Poll::Ready(Ok(())) => {
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// close ConnResource
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state
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.borrow_mut()
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.resource_table
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.take::<ConnResource>(conn_rid)
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.unwrap();
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true
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}
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Poll::Ready(Err(e)) => {
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// TODO(ry) close RequestResource associated with connection
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// TODO(ry) close ResponseBodyResource associated with connection
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// close ConnResource
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state
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.borrow_mut()
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.resource_table
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.take::<ConnResource>(conn_rid)
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.unwrap();
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if should_ignore_error(&e) {
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true
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} else {
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return Poll::Ready(Err(e));
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}
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}
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};
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if let Some(request_resource) =
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conn_resource.deno_service.inner.borrow_mut().take()
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{
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let tx = request_resource.response_tx;
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let req = request_resource.request;
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let method = req.method().to_string();
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let mut headers = Vec::with_capacity(req.headers().len());
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for (name, value) in req.headers().iter() {
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let name = name.to_string();
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let value = value.to_str().unwrap_or("").to_string();
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headers.push((name, value));
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}
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let url = req.uri().to_string();
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let has_body = if let Some(exact_size) = req.size_hint().exact() {
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exact_size > 0
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} else {
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true
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};
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let maybe_request_body_rid = if has_body {
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let stream: BytesStream = Box::pin(req.into_body().map(|r| {
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r.map_err(|err| std::io::Error::new(std::io::ErrorKind::Other, err))
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}));
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let stream_reader = StreamReader::new(stream);
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let mut state = state.borrow_mut();
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let request_body_rid = state.resource_table.add(RequestBodyResource {
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conn_rid,
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reader: AsyncRefCell::new(stream_reader),
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cancel: CancelHandle::default(),
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});
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Some(request_body_rid)
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} else {
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None
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};
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let mut state = state.borrow_mut();
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let response_sender_rid =
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state.resource_table.add(ResponseSenderResource {
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sender: tx,
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conn_rid,
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});
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Poll::Ready(Ok(Some(NextRequestResponse(
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maybe_request_body_rid,
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response_sender_rid,
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method,
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headers,
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url,
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))))
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} else if connection_closed {
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Poll::Ready(Ok(None))
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} else {
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Poll::Pending
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}
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})
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.await
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.map_err(AnyError::from)
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}
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fn should_ignore_error(e: &AnyError) -> bool {
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if let Some(e) = e.downcast_ref::<hyper::Error>() {
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use std::error::Error;
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if let Some(std_err) = e.source() {
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if let Some(io_err) = std_err.downcast_ref::<std::io::Error>() {
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if io_err.kind() == std::io::ErrorKind::NotConnected {
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return true;
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}
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}
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}
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}
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false
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}
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fn op_http_start(
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state: &mut OpState,
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tcp_stream_rid: ResourceId,
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_data: Option<ZeroCopyBuf>,
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) -> Result<ResourceId, AnyError> {
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let deno_service = Service::default();
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if let Some(resource_rc) = state
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.resource_table
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.take::<TcpStreamResource>(tcp_stream_rid)
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{
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let resource = Rc::try_unwrap(resource_rc)
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.expect("Only a single use of this resource should happen");
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let (read_half, write_half) = resource.into_inner();
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let tcp_stream = read_half.reunite(write_half)?;
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let hyper_connection = Http::new()
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.with_executor(LocalExecutor)
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.serve_connection(tcp_stream, deno_service.clone());
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let conn_resource = ConnResource {
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hyper_connection: ConnType::Tcp(Rc::new(RefCell::new(hyper_connection))),
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deno_service,
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};
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let rid = state.resource_table.add(conn_resource);
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return Ok(rid);
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}
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if let Some(resource_rc) = state
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.resource_table
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.take::<TlsServerStreamResource>(tcp_stream_rid)
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{
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let resource = Rc::try_unwrap(resource_rc)
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.expect("Only a single use of this resource should happen");
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let (read_half, write_half) = resource.into_inner();
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let tls_stream = read_half.unsplit(write_half);
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let hyper_connection = Http::new()
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.with_executor(LocalExecutor)
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.serve_connection(tls_stream, deno_service.clone());
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let conn_resource = ConnResource {
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hyper_connection: ConnType::Tls(Rc::new(RefCell::new(hyper_connection))),
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deno_service,
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};
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let rid = state.resource_table.add(conn_resource);
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return Ok(rid);
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}
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Err(bad_resource_id())
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}
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// We use a tuple instead of struct to avoid serialization overhead of the keys.
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#[derive(Deserialize)]
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struct RespondArgs(
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// rid:
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u32,
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// status:
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u16,
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// headers:
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Vec<String>,
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);
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async fn op_http_response(
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state: Rc<RefCell<OpState>>,
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args: RespondArgs,
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data: Option<ZeroCopyBuf>,
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) -> Result<Option<ResourceId>, AnyError> {
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let RespondArgs(rid, status, headers) = args;
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let response_sender = state
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.borrow_mut()
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.resource_table
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.take::<ResponseSenderResource>(rid)
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.ok_or_else(bad_resource_id)?;
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let response_sender = Rc::try_unwrap(response_sender)
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.ok()
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.expect("multiple op_http_respond ongoing");
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let conn_resource = state
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.borrow()
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.resource_table
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.get::<ConnResource>(response_sender.conn_rid)
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.ok_or_else(bad_resource_id)?;
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let mut builder = Response::builder().status(status);
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debug_assert_eq!(headers.len() % 2, 0);
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let headers_count = headers.len() / 2;
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builder.headers_mut().unwrap().reserve(headers_count);
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for i in 0..headers_count {
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builder = builder.header(&headers[2 * i], &headers[2 * i + 1]);
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}
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let res;
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let maybe_response_body_rid = if let Some(d) = data {
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// If a body is passed, we use it, and don't return a body for streaming.
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res = builder.body(Vec::from(&*d).into())?;
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None
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} else {
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// If no body is passed, we return a writer for streaming the body.
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let (sender, body) = Body::channel();
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res = builder.body(body)?;
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let response_body_rid =
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state.borrow_mut().resource_table.add(ResponseBodyResource {
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body: AsyncRefCell::new(sender),
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cancel: CancelHandle::default(),
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conn_rid: response_sender.conn_rid,
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});
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Some(response_body_rid)
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};
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// oneshot::Sender::send(v) returns |v| on error, not an error object.
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// The only failure mode is the receiver already having dropped its end
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// of the channel.
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if response_sender.sender.send(res).is_err() {
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return Err(type_error("internal communication error"));
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}
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poll_fn(|cx| match conn_resource.poll(cx) {
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Poll::Ready(x) => Poll::Ready(x),
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Poll::Pending => Poll::Ready(Ok(())),
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})
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.await?;
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Ok(maybe_response_body_rid)
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}
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async fn op_http_response_close(
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state: Rc<RefCell<OpState>>,
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rid: ResourceId,
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_data: Option<ZeroCopyBuf>,
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) -> Result<(), AnyError> {
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let resource = state
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.borrow_mut()
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.resource_table
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.take::<ResponseBodyResource>(rid)
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.ok_or_else(bad_resource_id)?;
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let conn_resource = state
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.borrow()
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.resource_table
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.get::<ConnResource>(resource.conn_rid)
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.ok_or_else(bad_resource_id)?;
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drop(resource);
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poll_fn(|cx| match conn_resource.poll(cx) {
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Poll::Ready(x) => Poll::Ready(x),
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Poll::Pending => Poll::Ready(Ok(())),
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})
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.await
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}
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async fn op_http_request_read(
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state: Rc<RefCell<OpState>>,
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rid: ResourceId,
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data: Option<ZeroCopyBuf>,
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) -> Result<usize, AnyError> {
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let mut data = data.ok_or_else(null_opbuf)?;
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let resource = state
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.borrow()
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.resource_table
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.get::<RequestBodyResource>(rid as u32)
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.ok_or_else(bad_resource_id)?;
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let conn_resource = state
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.borrow()
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.resource_table
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.get::<ConnResource>(resource.conn_rid)
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.ok_or_else(bad_resource_id)?;
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let mut reader = RcRef::map(&resource, |r| &r.reader).borrow_mut().await;
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let cancel = RcRef::map(resource, |r| &r.cancel);
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let mut read_fut = reader.read(&mut data).try_or_cancel(cancel).boxed_local();
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poll_fn(|cx| {
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if let Poll::Ready(Err(e)) = conn_resource.poll(cx) {
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// close ConnResource
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// close RequestResource associated with connection
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// close ResponseBodyResource associated with connection
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return Poll::Ready(Err(e));
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}
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read_fut.poll_unpin(cx).map_err(AnyError::from)
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})
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.await
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}
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async fn op_http_response_write(
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state: Rc<RefCell<OpState>>,
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rid: ResourceId,
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data: Option<ZeroCopyBuf>,
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) -> Result<(), AnyError> {
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let buf = data.ok_or_else(null_opbuf)?;
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let resource = state
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.borrow()
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.resource_table
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.get::<ResponseBodyResource>(rid as u32)
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.ok_or_else(bad_resource_id)?;
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let conn_resource = state
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.borrow()
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.resource_table
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.get::<ConnResource>(resource.conn_rid)
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.ok_or_else(bad_resource_id)?;
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let mut body = RcRef::map(&resource, |r| &r.body).borrow_mut().await;
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let cancel = RcRef::map(resource, |r| &r.cancel);
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let mut send_data_fut = body
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.send_data(Vec::from(&*buf).into())
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.or_cancel(cancel)
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.boxed_local();
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poll_fn(|cx| {
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if let Poll::Ready(Err(e)) = conn_resource.poll(cx) {
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// close ConnResource
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// close RequestResource associated with connection
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// close ResponseBodyResource associated with connection
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return Poll::Ready(Err(e));
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}
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send_data_fut.poll_unpin(cx).map_err(AnyError::from)
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})
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.await?
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.unwrap(); // panic on send_data error
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Ok(())
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}
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|
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type BytesStream =
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Pin<Box<dyn Stream<Item = std::io::Result<bytes::Bytes>> + Unpin>>;
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struct RequestBodyResource {
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conn_rid: ResourceId,
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reader: AsyncRefCell<StreamReader<BytesStream, bytes::Bytes>>,
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cancel: CancelHandle,
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}
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impl Resource for RequestBodyResource {
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fn name(&self) -> Cow<str> {
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"requestBody".into()
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}
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}
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struct ResponseSenderResource {
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sender: oneshot::Sender<Response<Body>>,
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conn_rid: ResourceId,
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}
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impl Resource for ResponseSenderResource {
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fn name(&self) -> Cow<str> {
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"responseSender".into()
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}
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}
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struct ResponseBodyResource {
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body: AsyncRefCell<hyper::body::Sender>,
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cancel: CancelHandle,
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conn_rid: ResourceId,
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}
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impl Resource for ResponseBodyResource {
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fn name(&self) -> Cow<str> {
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"responseBody".into()
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}
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}
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|
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// Needed so hyper can use non Send futures
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#[derive(Clone)]
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struct LocalExecutor;
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|
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impl<Fut> hyper::rt::Executor<Fut> for LocalExecutor
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where
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Fut: Future + 'static,
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Fut::Output: 'static,
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{
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fn execute(&self, fut: Fut) {
|
|
tokio::task::spawn_local(fut);
|
|
}
|
|
}
|