mirror of
https://github.com/fafhrd91/actix-web
synced 2024-11-24 08:22:59 +01:00
827 lines
29 KiB
Rust
827 lines
29 KiB
Rust
use std::cell::UnsafeCell;
|
|
use std::marker::PhantomData;
|
|
use std::rc::Rc;
|
|
use std::{io, mem};
|
|
|
|
use futures::unsync::oneshot;
|
|
use futures::{Async, Future, Poll, Stream};
|
|
use log::Level::Debug;
|
|
|
|
use application::Inner;
|
|
use body::{Body, BodyStream};
|
|
use context::{ActorHttpContext, Frame};
|
|
use error::Error;
|
|
use handler::{Reply, ReplyItem};
|
|
use header::ContentEncoding;
|
|
use httprequest::HttpRequest;
|
|
use httpresponse::HttpResponse;
|
|
use middleware::{Finished, Middleware, Response, Started};
|
|
use server::{HttpHandlerTask, Writer, WriterState};
|
|
|
|
#[derive(Debug, Clone, Copy)]
|
|
pub(crate) enum HandlerType {
|
|
Normal(usize),
|
|
Handler(usize),
|
|
Default,
|
|
}
|
|
|
|
pub(crate) trait PipelineHandler<S> {
|
|
fn encoding(&self) -> ContentEncoding;
|
|
|
|
fn handle(&mut self, req: HttpRequest<S>, htype: HandlerType) -> Reply;
|
|
}
|
|
|
|
pub(crate) struct Pipeline<S, H>(PipelineInfo<S>, PipelineState<S, H>);
|
|
|
|
enum PipelineState<S, H> {
|
|
None,
|
|
Error,
|
|
Starting(StartMiddlewares<S, H>),
|
|
Handler(WaitingResponse<S, H>),
|
|
RunMiddlewares(RunMiddlewares<S, H>),
|
|
Response(ProcessResponse<S, H>),
|
|
Finishing(FinishingMiddlewares<S, H>),
|
|
Completed(Completed<S, H>),
|
|
}
|
|
|
|
impl<S: 'static, H: PipelineHandler<S>> PipelineState<S, H> {
|
|
fn is_response(&self) -> bool {
|
|
match *self {
|
|
PipelineState::Response(_) => true,
|
|
_ => false,
|
|
}
|
|
}
|
|
|
|
fn poll(&mut self, info: &mut PipelineInfo<S>) -> Option<PipelineState<S, H>> {
|
|
match *self {
|
|
PipelineState::Starting(ref mut state) => state.poll(info),
|
|
PipelineState::Handler(ref mut state) => state.poll(info),
|
|
PipelineState::RunMiddlewares(ref mut state) => state.poll(info),
|
|
PipelineState::Finishing(ref mut state) => state.poll(info),
|
|
PipelineState::Completed(ref mut state) => state.poll(info),
|
|
PipelineState::Response(_) | PipelineState::None | PipelineState::Error => {
|
|
None
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
struct PipelineInfo<S> {
|
|
req: HttpRequest<S>,
|
|
count: u16,
|
|
mws: Rc<Vec<Box<Middleware<S>>>>,
|
|
context: Option<Box<ActorHttpContext>>,
|
|
error: Option<Error>,
|
|
disconnected: Option<bool>,
|
|
encoding: ContentEncoding,
|
|
}
|
|
|
|
impl<S> PipelineInfo<S> {
|
|
fn new(req: HttpRequest<S>) -> PipelineInfo<S> {
|
|
PipelineInfo {
|
|
req,
|
|
count: 0,
|
|
mws: Rc::new(Vec::new()),
|
|
error: None,
|
|
context: None,
|
|
disconnected: None,
|
|
encoding: ContentEncoding::Auto,
|
|
}
|
|
}
|
|
|
|
#[cfg_attr(feature = "cargo-clippy", allow(mut_from_ref))]
|
|
fn req_mut(&self) -> &mut HttpRequest<S> {
|
|
#[allow(mutable_transmutes)]
|
|
unsafe {
|
|
mem::transmute(&self.req)
|
|
}
|
|
}
|
|
|
|
fn poll_context(&mut self) -> Poll<(), Error> {
|
|
if let Some(ref mut context) = self.context {
|
|
match context.poll() {
|
|
Err(err) => Err(err),
|
|
Ok(Async::NotReady) => Ok(Async::NotReady),
|
|
Ok(Async::Ready(_)) => Ok(Async::Ready(())),
|
|
}
|
|
} else {
|
|
Ok(Async::Ready(()))
|
|
}
|
|
}
|
|
}
|
|
|
|
impl<S: 'static, H: PipelineHandler<S>> Pipeline<S, H> {
|
|
pub fn new(
|
|
req: HttpRequest<S>, mws: Rc<Vec<Box<Middleware<S>>>>,
|
|
handler: Rc<UnsafeCell<H>>, htype: HandlerType,
|
|
) -> Pipeline<S, H> {
|
|
let mut info = PipelineInfo {
|
|
req,
|
|
mws,
|
|
count: 0,
|
|
error: None,
|
|
context: None,
|
|
disconnected: None,
|
|
encoding: unsafe { &*handler.get() }.encoding(),
|
|
};
|
|
let state = StartMiddlewares::init(&mut info, handler, htype);
|
|
|
|
Pipeline(info, state)
|
|
}
|
|
}
|
|
|
|
impl Pipeline<(), Inner<()>> {
|
|
pub fn error<R: Into<HttpResponse>>(err: R) -> Box<HttpHandlerTask> {
|
|
Box::new(Pipeline::<(), Inner<()>>(
|
|
PipelineInfo::new(HttpRequest::default()),
|
|
ProcessResponse::init(err.into()),
|
|
))
|
|
}
|
|
}
|
|
|
|
impl<S: 'static, H> Pipeline<S, H> {
|
|
fn is_done(&self) -> bool {
|
|
match self.1 {
|
|
PipelineState::None
|
|
| PipelineState::Error
|
|
| PipelineState::Starting(_)
|
|
| PipelineState::Handler(_)
|
|
| PipelineState::RunMiddlewares(_)
|
|
| PipelineState::Response(_) => true,
|
|
PipelineState::Finishing(_) | PipelineState::Completed(_) => false,
|
|
}
|
|
}
|
|
}
|
|
|
|
impl<S: 'static, H: PipelineHandler<S>> HttpHandlerTask for Pipeline<S, H> {
|
|
fn disconnected(&mut self) {
|
|
self.0.disconnected = Some(true);
|
|
}
|
|
|
|
fn poll_io(&mut self, io: &mut Writer) -> Poll<bool, Error> {
|
|
let info: &mut PipelineInfo<_> = unsafe { mem::transmute(&mut self.0) };
|
|
|
|
loop {
|
|
if self.1.is_response() {
|
|
let state = mem::replace(&mut self.1, PipelineState::None);
|
|
if let PipelineState::Response(st) = state {
|
|
match st.poll_io(io, info) {
|
|
Ok(state) => {
|
|
self.1 = state;
|
|
if let Some(error) = self.0.error.take() {
|
|
return Err(error);
|
|
} else {
|
|
return Ok(Async::Ready(self.is_done()));
|
|
}
|
|
}
|
|
Err(state) => {
|
|
self.1 = state;
|
|
return Ok(Async::NotReady);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
match self.1 {
|
|
PipelineState::None => return Ok(Async::Ready(true)),
|
|
PipelineState::Error => {
|
|
return Err(io::Error::new(io::ErrorKind::Other, "Internal error").into())
|
|
}
|
|
_ => (),
|
|
}
|
|
|
|
match self.1.poll(info) {
|
|
Some(state) => self.1 = state,
|
|
None => return Ok(Async::NotReady),
|
|
}
|
|
}
|
|
}
|
|
|
|
fn poll(&mut self) -> Poll<(), Error> {
|
|
let info: &mut PipelineInfo<_> = unsafe { mem::transmute(&mut self.0) };
|
|
|
|
loop {
|
|
match self.1 {
|
|
PipelineState::None | PipelineState::Error => {
|
|
return Ok(Async::Ready(()))
|
|
}
|
|
_ => (),
|
|
}
|
|
|
|
if let Some(state) = self.1.poll(info) {
|
|
self.1 = state;
|
|
} else {
|
|
return Ok(Async::NotReady);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
type Fut = Box<Future<Item = Option<HttpResponse>, Error = Error>>;
|
|
|
|
/// Middlewares start executor
|
|
struct StartMiddlewares<S, H> {
|
|
hnd: Rc<UnsafeCell<H>>,
|
|
htype: HandlerType,
|
|
fut: Option<Fut>,
|
|
_s: PhantomData<S>,
|
|
}
|
|
|
|
impl<S: 'static, H: PipelineHandler<S>> StartMiddlewares<S, H> {
|
|
fn init(
|
|
info: &mut PipelineInfo<S>, hnd: Rc<UnsafeCell<H>>, htype: HandlerType
|
|
) -> PipelineState<S, H> {
|
|
// execute middlewares, we need this stage because middlewares could be
|
|
// non-async and we can move to next state immediately
|
|
let len = info.mws.len() as u16;
|
|
loop {
|
|
if info.count == len {
|
|
let reply = unsafe { &mut *hnd.get() }.handle(info.req.clone(), htype);
|
|
return WaitingResponse::init(info, reply);
|
|
} else {
|
|
match info.mws[info.count as usize].start(&mut info.req) {
|
|
Ok(Started::Done) => info.count += 1,
|
|
Ok(Started::Response(resp)) => {
|
|
return RunMiddlewares::init(info, resp)
|
|
}
|
|
Ok(Started::Future(mut fut)) => match fut.poll() {
|
|
Ok(Async::NotReady) => {
|
|
return PipelineState::Starting(StartMiddlewares {
|
|
hnd,
|
|
htype,
|
|
fut: Some(fut),
|
|
_s: PhantomData,
|
|
})
|
|
}
|
|
Ok(Async::Ready(resp)) => {
|
|
if let Some(resp) = resp {
|
|
return RunMiddlewares::init(info, resp);
|
|
}
|
|
info.count += 1;
|
|
}
|
|
Err(err) => return ProcessResponse::init(err.into()),
|
|
},
|
|
Err(err) => return ProcessResponse::init(err.into()),
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
fn poll(&mut self, info: &mut PipelineInfo<S>) -> Option<PipelineState<S, H>> {
|
|
let len = info.mws.len() as u16;
|
|
'outer: loop {
|
|
match self.fut.as_mut().unwrap().poll() {
|
|
Ok(Async::NotReady) => return None,
|
|
Ok(Async::Ready(resp)) => {
|
|
info.count += 1;
|
|
if let Some(resp) = resp {
|
|
return Some(RunMiddlewares::init(info, resp));
|
|
}
|
|
if info.count == len {
|
|
let reply = unsafe { &mut *self.hnd.get() }
|
|
.handle(info.req.clone(), self.htype);
|
|
return Some(WaitingResponse::init(info, reply));
|
|
} else {
|
|
loop {
|
|
match info.mws[info.count as usize].start(info.req_mut()) {
|
|
Ok(Started::Done) => info.count += 1,
|
|
Ok(Started::Response(resp)) => {
|
|
return Some(RunMiddlewares::init(info, resp));
|
|
}
|
|
Ok(Started::Future(fut)) => {
|
|
self.fut = Some(fut);
|
|
continue 'outer;
|
|
}
|
|
Err(err) => {
|
|
return Some(ProcessResponse::init(err.into()))
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
Err(err) => return Some(ProcessResponse::init(err.into())),
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// waiting for response
|
|
struct WaitingResponse<S, H> {
|
|
fut: Box<Future<Item = HttpResponse, Error = Error>>,
|
|
_s: PhantomData<S>,
|
|
_h: PhantomData<H>,
|
|
}
|
|
|
|
impl<S: 'static, H> WaitingResponse<S, H> {
|
|
#[inline]
|
|
fn init(info: &mut PipelineInfo<S>, reply: Reply) -> PipelineState<S, H> {
|
|
match reply.into() {
|
|
ReplyItem::Message(resp) => RunMiddlewares::init(info, resp),
|
|
ReplyItem::Future(fut) => PipelineState::Handler(WaitingResponse {
|
|
fut,
|
|
_s: PhantomData,
|
|
_h: PhantomData,
|
|
}),
|
|
}
|
|
}
|
|
|
|
fn poll(&mut self, info: &mut PipelineInfo<S>) -> Option<PipelineState<S, H>> {
|
|
match self.fut.poll() {
|
|
Ok(Async::NotReady) => None,
|
|
Ok(Async::Ready(response)) => Some(RunMiddlewares::init(info, response)),
|
|
Err(err) => Some(ProcessResponse::init(err.into())),
|
|
}
|
|
}
|
|
}
|
|
|
|
/// Middlewares response executor
|
|
struct RunMiddlewares<S, H> {
|
|
curr: usize,
|
|
fut: Option<Box<Future<Item = HttpResponse, Error = Error>>>,
|
|
_s: PhantomData<S>,
|
|
_h: PhantomData<H>,
|
|
}
|
|
|
|
impl<S: 'static, H> RunMiddlewares<S, H> {
|
|
fn init(info: &mut PipelineInfo<S>, mut resp: HttpResponse) -> PipelineState<S, H> {
|
|
if info.count == 0 {
|
|
return ProcessResponse::init(resp);
|
|
}
|
|
let mut curr = 0;
|
|
let len = info.mws.len();
|
|
|
|
loop {
|
|
resp = match info.mws[curr].response(info.req_mut(), resp) {
|
|
Err(err) => {
|
|
info.count = (curr + 1) as u16;
|
|
return ProcessResponse::init(err.into());
|
|
}
|
|
Ok(Response::Done(r)) => {
|
|
curr += 1;
|
|
if curr == len {
|
|
return ProcessResponse::init(r);
|
|
} else {
|
|
r
|
|
}
|
|
}
|
|
Ok(Response::Future(fut)) => {
|
|
return PipelineState::RunMiddlewares(RunMiddlewares {
|
|
curr,
|
|
fut: Some(fut),
|
|
_s: PhantomData,
|
|
_h: PhantomData,
|
|
})
|
|
}
|
|
};
|
|
}
|
|
}
|
|
|
|
fn poll(&mut self, info: &mut PipelineInfo<S>) -> Option<PipelineState<S, H>> {
|
|
let len = info.mws.len();
|
|
|
|
loop {
|
|
// poll latest fut
|
|
let mut resp = match self.fut.as_mut().unwrap().poll() {
|
|
Ok(Async::NotReady) => return None,
|
|
Ok(Async::Ready(resp)) => {
|
|
self.curr += 1;
|
|
resp
|
|
}
|
|
Err(err) => return Some(ProcessResponse::init(err.into())),
|
|
};
|
|
|
|
loop {
|
|
if self.curr == len {
|
|
return Some(ProcessResponse::init(resp));
|
|
} else {
|
|
match info.mws[self.curr].response(info.req_mut(), resp) {
|
|
Err(err) => return Some(ProcessResponse::init(err.into())),
|
|
Ok(Response::Done(r)) => {
|
|
self.curr += 1;
|
|
resp = r
|
|
}
|
|
Ok(Response::Future(fut)) => {
|
|
self.fut = Some(fut);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
struct ProcessResponse<S, H> {
|
|
resp: HttpResponse,
|
|
iostate: IOState,
|
|
running: RunningState,
|
|
drain: Option<oneshot::Sender<()>>,
|
|
_s: PhantomData<S>,
|
|
_h: PhantomData<H>,
|
|
}
|
|
|
|
#[derive(PartialEq)]
|
|
enum RunningState {
|
|
Running,
|
|
Paused,
|
|
Done,
|
|
}
|
|
|
|
impl RunningState {
|
|
#[inline]
|
|
fn pause(&mut self) {
|
|
if *self != RunningState::Done {
|
|
*self = RunningState::Paused
|
|
}
|
|
}
|
|
#[inline]
|
|
fn resume(&mut self) {
|
|
if *self != RunningState::Done {
|
|
*self = RunningState::Running
|
|
}
|
|
}
|
|
}
|
|
|
|
enum IOState {
|
|
Response,
|
|
Payload(BodyStream),
|
|
Actor(Box<ActorHttpContext>),
|
|
Done,
|
|
}
|
|
|
|
impl<S: 'static, H> ProcessResponse<S, H> {
|
|
#[inline]
|
|
fn init(resp: HttpResponse) -> PipelineState<S, H> {
|
|
PipelineState::Response(ProcessResponse {
|
|
resp,
|
|
iostate: IOState::Response,
|
|
running: RunningState::Running,
|
|
drain: None,
|
|
_s: PhantomData,
|
|
_h: PhantomData,
|
|
})
|
|
}
|
|
|
|
fn poll_io(
|
|
mut self, io: &mut Writer, info: &mut PipelineInfo<S>
|
|
) -> Result<PipelineState<S, H>, PipelineState<S, H>> {
|
|
loop {
|
|
if self.drain.is_none() && self.running != RunningState::Paused {
|
|
// if task is paused, write buffer is probably full
|
|
'inner: loop {
|
|
let result = match mem::replace(&mut self.iostate, IOState::Done) {
|
|
IOState::Response => {
|
|
let encoding =
|
|
self.resp.content_encoding().unwrap_or(info.encoding);
|
|
|
|
let result = match io.start(
|
|
info.req_mut().get_inner(),
|
|
&mut self.resp,
|
|
encoding,
|
|
) {
|
|
Ok(res) => res,
|
|
Err(err) => {
|
|
info.error = Some(err.into());
|
|
return Ok(FinishingMiddlewares::init(
|
|
info,
|
|
self.resp,
|
|
));
|
|
}
|
|
};
|
|
|
|
if let Some(err) = self.resp.error() {
|
|
if self.resp.status().is_server_error() {
|
|
error!(
|
|
"Error occured during request handling: {}",
|
|
err
|
|
);
|
|
} else {
|
|
warn!(
|
|
"Error occured during request handling: {}",
|
|
err
|
|
);
|
|
}
|
|
if log_enabled!(Debug) {
|
|
debug!("{:?}", err);
|
|
}
|
|
}
|
|
|
|
// always poll stream or actor for the first time
|
|
match self.resp.replace_body(Body::Empty) {
|
|
Body::Streaming(stream) => {
|
|
self.iostate = IOState::Payload(stream);
|
|
continue 'inner;
|
|
}
|
|
Body::Actor(ctx) => {
|
|
self.iostate = IOState::Actor(ctx);
|
|
continue 'inner;
|
|
}
|
|
_ => (),
|
|
}
|
|
|
|
result
|
|
}
|
|
IOState::Payload(mut body) => match body.poll() {
|
|
Ok(Async::Ready(None)) => {
|
|
if let Err(err) = io.write_eof() {
|
|
info.error = Some(err.into());
|
|
return Ok(FinishingMiddlewares::init(
|
|
info,
|
|
self.resp,
|
|
));
|
|
}
|
|
break;
|
|
}
|
|
Ok(Async::Ready(Some(chunk))) => {
|
|
self.iostate = IOState::Payload(body);
|
|
match io.write(chunk.into()) {
|
|
Err(err) => {
|
|
info.error = Some(err.into());
|
|
return Ok(FinishingMiddlewares::init(
|
|
info,
|
|
self.resp,
|
|
));
|
|
}
|
|
Ok(result) => result,
|
|
}
|
|
}
|
|
Ok(Async::NotReady) => {
|
|
self.iostate = IOState::Payload(body);
|
|
break;
|
|
}
|
|
Err(err) => {
|
|
info.error = Some(err);
|
|
return Ok(FinishingMiddlewares::init(info, self.resp));
|
|
}
|
|
},
|
|
IOState::Actor(mut ctx) => {
|
|
if info.disconnected.take().is_some() {
|
|
ctx.disconnected();
|
|
}
|
|
match ctx.poll() {
|
|
Ok(Async::Ready(Some(vec))) => {
|
|
if vec.is_empty() {
|
|
self.iostate = IOState::Actor(ctx);
|
|
break;
|
|
}
|
|
let mut res = None;
|
|
for frame in vec {
|
|
match frame {
|
|
Frame::Chunk(None) => {
|
|
info.context = Some(ctx);
|
|
if let Err(err) = io.write_eof() {
|
|
info.error = Some(err.into());
|
|
return Ok(
|
|
FinishingMiddlewares::init(
|
|
info,
|
|
self.resp,
|
|
),
|
|
);
|
|
}
|
|
break 'inner;
|
|
}
|
|
Frame::Chunk(Some(chunk)) => {
|
|
match io.write(chunk) {
|
|
Err(err) => {
|
|
info.error = Some(err.into());
|
|
return Ok(
|
|
FinishingMiddlewares::init(
|
|
info,
|
|
self.resp,
|
|
),
|
|
);
|
|
}
|
|
Ok(result) => res = Some(result),
|
|
}
|
|
}
|
|
Frame::Drain(fut) => self.drain = Some(fut),
|
|
}
|
|
}
|
|
self.iostate = IOState::Actor(ctx);
|
|
if self.drain.is_some() {
|
|
self.running.resume();
|
|
break 'inner;
|
|
}
|
|
res.unwrap()
|
|
}
|
|
Ok(Async::Ready(None)) => break,
|
|
Ok(Async::NotReady) => {
|
|
self.iostate = IOState::Actor(ctx);
|
|
break;
|
|
}
|
|
Err(err) => {
|
|
info.error = Some(err);
|
|
return Ok(FinishingMiddlewares::init(
|
|
info,
|
|
self.resp,
|
|
));
|
|
}
|
|
}
|
|
}
|
|
IOState::Done => break,
|
|
};
|
|
|
|
match result {
|
|
WriterState::Pause => {
|
|
self.running.pause();
|
|
break;
|
|
}
|
|
WriterState::Done => self.running.resume(),
|
|
}
|
|
}
|
|
}
|
|
|
|
// flush io but only if we need to
|
|
if self.running == RunningState::Paused || self.drain.is_some() {
|
|
match io.poll_completed(false) {
|
|
Ok(Async::Ready(_)) => {
|
|
self.running.resume();
|
|
|
|
// resolve drain futures
|
|
if let Some(tx) = self.drain.take() {
|
|
let _ = tx.send(());
|
|
}
|
|
// restart io processing
|
|
continue;
|
|
}
|
|
Ok(Async::NotReady) => return Err(PipelineState::Response(self)),
|
|
Err(err) => {
|
|
info.error = Some(err.into());
|
|
return Ok(FinishingMiddlewares::init(info, self.resp));
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
|
|
// response is completed
|
|
match self.iostate {
|
|
IOState::Done => {
|
|
match io.write_eof() {
|
|
Ok(_) => (),
|
|
Err(err) => {
|
|
info.error = Some(err.into());
|
|
return Ok(FinishingMiddlewares::init(info, self.resp));
|
|
}
|
|
}
|
|
self.resp.set_response_size(io.written());
|
|
Ok(FinishingMiddlewares::init(info, self.resp))
|
|
}
|
|
_ => Err(PipelineState::Response(self)),
|
|
}
|
|
}
|
|
}
|
|
|
|
/// Middlewares start executor
|
|
struct FinishingMiddlewares<S, H> {
|
|
resp: HttpResponse,
|
|
fut: Option<Box<Future<Item = (), Error = Error>>>,
|
|
_s: PhantomData<S>,
|
|
_h: PhantomData<H>,
|
|
}
|
|
|
|
impl<S: 'static, H> FinishingMiddlewares<S, H> {
|
|
fn init(info: &mut PipelineInfo<S>, resp: HttpResponse) -> PipelineState<S, H> {
|
|
if info.count == 0 {
|
|
Completed::init(info)
|
|
} else {
|
|
let mut state = FinishingMiddlewares {
|
|
resp,
|
|
fut: None,
|
|
_s: PhantomData,
|
|
_h: PhantomData,
|
|
};
|
|
if let Some(st) = state.poll(info) {
|
|
st
|
|
} else {
|
|
PipelineState::Finishing(state)
|
|
}
|
|
}
|
|
}
|
|
|
|
fn poll(&mut self, info: &mut PipelineInfo<S>) -> Option<PipelineState<S, H>> {
|
|
loop {
|
|
// poll latest fut
|
|
let not_ready = if let Some(ref mut fut) = self.fut {
|
|
match fut.poll() {
|
|
Ok(Async::NotReady) => true,
|
|
Ok(Async::Ready(())) => false,
|
|
Err(err) => {
|
|
error!("Middleware finish error: {}", err);
|
|
false
|
|
}
|
|
}
|
|
} else {
|
|
false
|
|
};
|
|
if not_ready {
|
|
return None;
|
|
}
|
|
self.fut = None;
|
|
info.count -= 1;
|
|
|
|
match info.mws[info.count as usize].finish(info.req_mut(), &self.resp) {
|
|
Finished::Done => {
|
|
if info.count == 0 {
|
|
return Some(Completed::init(info));
|
|
}
|
|
}
|
|
Finished::Future(fut) => {
|
|
self.fut = Some(fut);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
#[derive(Debug)]
|
|
struct Completed<S, H>(PhantomData<S>, PhantomData<H>);
|
|
|
|
impl<S, H> Completed<S, H> {
|
|
#[inline]
|
|
fn init(info: &mut PipelineInfo<S>) -> PipelineState<S, H> {
|
|
if let Some(ref err) = info.error {
|
|
error!("Error occurred during request handling: {}", err);
|
|
}
|
|
|
|
if info.context.is_none() {
|
|
PipelineState::None
|
|
} else {
|
|
PipelineState::Completed(Completed(PhantomData, PhantomData))
|
|
}
|
|
}
|
|
|
|
#[inline]
|
|
fn poll(&mut self, info: &mut PipelineInfo<S>) -> Option<PipelineState<S, H>> {
|
|
match info.poll_context() {
|
|
Ok(Async::NotReady) => None,
|
|
Ok(Async::Ready(())) => Some(PipelineState::None),
|
|
Err(_) => Some(PipelineState::Error),
|
|
}
|
|
}
|
|
}
|
|
|
|
#[cfg(test)]
|
|
mod tests {
|
|
use super::*;
|
|
use actix::*;
|
|
use context::HttpContext;
|
|
use futures::future::{lazy, result};
|
|
use tokio_core::reactor::Core;
|
|
|
|
impl<S, H> PipelineState<S, H> {
|
|
fn is_none(&self) -> Option<bool> {
|
|
if let PipelineState::None = *self {
|
|
Some(true)
|
|
} else {
|
|
None
|
|
}
|
|
}
|
|
fn completed(self) -> Option<Completed<S, H>> {
|
|
if let PipelineState::Completed(c) = self {
|
|
Some(c)
|
|
} else {
|
|
None
|
|
}
|
|
}
|
|
}
|
|
|
|
struct MyActor;
|
|
impl Actor for MyActor {
|
|
type Context = HttpContext<MyActor>;
|
|
}
|
|
|
|
#[test]
|
|
fn test_completed() {
|
|
Core::new()
|
|
.unwrap()
|
|
.run(lazy(|| {
|
|
let mut info = PipelineInfo::new(HttpRequest::default());
|
|
Completed::<(), Inner<()>>::init(&mut info)
|
|
.is_none()
|
|
.unwrap();
|
|
|
|
let req = HttpRequest::default();
|
|
let mut ctx = HttpContext::new(req.clone(), MyActor);
|
|
let addr: Addr<Unsync, _> = ctx.address();
|
|
let mut info = PipelineInfo::new(req);
|
|
info.context = Some(Box::new(ctx));
|
|
let mut state = Completed::<(), Inner<()>>::init(&mut info)
|
|
.completed()
|
|
.unwrap();
|
|
|
|
assert!(state.poll(&mut info).is_none());
|
|
let pp = Pipeline(info, PipelineState::Completed(state));
|
|
assert!(!pp.is_done());
|
|
|
|
let Pipeline(mut info, st) = pp;
|
|
let mut st = st.completed().unwrap();
|
|
drop(addr);
|
|
|
|
assert!(st.poll(&mut info).unwrap().is_none().unwrap());
|
|
|
|
result(Ok::<_, ()>(()))
|
|
}))
|
|
.unwrap();
|
|
}
|
|
}
|