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actix-web
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Code Issues Releases Wiki Activity

return Option<State> according to review

This commit is contained in:
fakeshadow 2020-12-18 08:17:54 +08:00
parent 6c5b0c67f3
commit 50aa2e6cd3
1 changed files with 17 additions and 23 deletions
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40
actix-http/src/h1/dispatcher.rs
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@ -141,10 +141,6 @@ where
matches!(self, State::None)
}
fn is_noop(&self) -> bool {
matches!(self, State::NoOp)
}
fn is_call(&self) -> bool {
matches!(self, State::ServiceCall(_))
}
@ -344,7 +340,7 @@ where
self: Pin<&mut Self>,
message: Response<()>,
body: ResponseBody<B>,
) -> Result<State<S, B, X>, DispatchError> {
) -> Result<Option<State<S, B, X>>, DispatchError> {
let mut this = self.project();
this.codec
.encode(Message::Item((message, body.size())), &mut this.write_buf)
@ -357,8 +353,8 @@ where
this.flags.set(Flags::KEEPALIVE, this.codec.keepalive());
match body.size() {
BodySize::None | BodySize::Empty => Ok(State::None),
_ => Ok(State::SendPayload(body)),
BodySize::None | BodySize::Empty => Ok(Some(State::None)),
_ => Ok(Some(State::SendPayload(body))),
}
}
@ -377,12 +373,11 @@ where
let state = match this.state.project() {
StateProj::None => match this.messages.pop_front() {
Some(DispatcherMessage::Item(req)) => {
Some(self.as_mut().handle_request(req, cx)?)
self.as_mut().handle_request(req, cx)?
}
Some(DispatcherMessage::Error(res)) => Some(
self.as_mut()
.send_response(res, ResponseBody::Other(Body::Empty))?,
),
Some(DispatcherMessage::Error(res)) => self
.as_mut()
.send_response(res, ResponseBody::Other(Body::Empty))?,
Some(DispatcherMessage::Upgrade(req)) => {
return Ok(PollResponse::Upgrade(req));
}
@ -398,14 +393,15 @@ where
Poll::Ready(Err(e)) => {
let res: Response = e.into().into();
let (res, body) = res.replace_body(());
Some(self.as_mut().send_response(res, body.into_body())?)
self.as_mut().send_response(res, body.into_body())?
}
Poll::Pending => None,
},
StateProj::ServiceCall(fut) => match fut.poll(cx) {
Poll::Ready(Ok(res)) => {
let (res, body) = res.into().replace_body(());
let state = self.as_mut().send_response(res, body)?;
// send_response does not return a None variant of State.
let state = self.as_mut().send_response(res, body)?.unwrap();
this = self.as_mut().project();
this.state.set(state);
continue;
@ -413,7 +409,7 @@ where
Poll::Ready(Err(e)) => {
let res: Response = e.into().into();
let (res, body) = res.replace_body(());
Some(self.as_mut().send_response(res, body.into_body())?)
self.as_mut().send_response(res, body.into_body())?
}
Poll::Pending => None,
},
@ -457,10 +453,7 @@ where
// set new state
if let Some(state) = state {
// only set state when it's not noop
if !state.is_noop() {
this.state.set(state);
}
this.state.set(state);
if !self.state.is_empty() {
continue;
}
@ -485,7 +478,7 @@ where
mut self: Pin<&mut Self>,
req: Request,
cx: &mut Context<'_>,
) -> Result<State<S, B, X>, DispatchError> {
) -> Result<Option<State<S, B, X>>, DispatchError> {
// Handle `EXPECT: 100-Continue` header
if req.head().expect() {
// set dispatcher state so the future is pinned.
@ -511,7 +504,7 @@ where
}
// future is pending. return NoOp state to notify that we already set
// the state and it should not be updated again.
Poll::Pending => return Ok(State::NoOp),
Poll::Pending => return Ok(None),
// future is error. send response and return a state on success to notify
// the dispatcher state should be updated.
Poll::Ready(Err(e)) => {
@ -532,7 +525,7 @@ where
self.send_response(res, body)
}
// see the comment on ExpectCall state branch's Pending.
Poll::Pending => Ok(State::NoOp),
Poll::Pending => Ok(None),
// see the comment on ExpectCall state branch's Ready(Err(e)).
Poll::Ready(Err(e)) => {
let res: Response = e.into().into();
@ -594,9 +587,10 @@ where
// handle request early
if this.state.is_empty() {
// State can be set here
let state = self.as_mut().handle_request(req, cx)?;
this = self.as_mut().project();
if !state.is_noop() {
if let Some(state) = state {
this.state.set(state);
}
} else {