mirror of
https://github.com/actix/actix-web.git
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cleanup pipeline
This commit is contained in:
Nikolay Kim
parent
37c1e78c7a
commit
53ce186294
282
src/pipeline.rs
282
src/pipeline.rs
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@ -149,6 +149,140 @@ impl Pipeline {
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}
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}
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type Fut = Box<Future<Item=(HttpRequest, Option<HttpResponse>), Error=Error>>;
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/// Middlewares start executor
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struct Start {
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idx: usize,
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hnd: *mut Handler,
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disconnected: bool,
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payload: Option<Payload>,
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fut: Option<Fut>,
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middlewares: Rc<Vec<Box<Middleware>>>,
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}
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enum StartResult {
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Ready(Box<Handle>),
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NotReady(Start),
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}
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impl Start {
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fn init(mw: Rc<Vec<Box<Middleware>>>,
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req: HttpRequest,
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handler: PipelineHandler,
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payload: Payload) -> Result<StartResult, Error> {
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Start {
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idx: 0,
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fut: None,
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disconnected: false,
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hnd: handler as *const _ as *mut _,
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payload: Some(payload),
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middlewares: mw,
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}.start(req)
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}
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fn disconnected(&mut self) {
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self.disconnected = true;
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}
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fn prepare(&self, mut task: Task) -> Task {
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if self.disconnected {
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task.disconnected()
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}
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task.set_middlewares(MiddlewaresResponse::new(self.idx-1, Rc::clone(&self.middlewares)));
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task
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}
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fn start(mut self, mut req: HttpRequest) -> Result<StartResult, Error> {
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let len = self.middlewares.len();
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loop {
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if self.idx == len {
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let task = (unsafe{&*self.hnd})(
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&mut req, self.payload.take().expect("Something is completlywrong"));
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return Ok(StartResult::Ready(
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Box::new(Handle::new(self.idx-1, req, self.prepare(task), self.middlewares))))
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} else {
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req = match self.middlewares[self.idx].start(req) {
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Started::Done(req) => {
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self.idx += 1;
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req
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}
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Started::Response(req, resp) => {
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return Ok(StartResult::Ready(
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Box::new(Handle::new(
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self.idx, req, self.prepare(Task::reply(resp)), self.middlewares))))
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},
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Started::Future(mut fut) => {
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match fut.poll() {
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Ok(Async::NotReady) => {
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self.fut = Some(fut);
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return Ok(StartResult::NotReady(self))
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}
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Ok(Async::Ready((req, resp))) => {
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if let Some(resp) = resp {
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return Ok(StartResult::Ready(
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Box::new(Handle::new(
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self.idx, req,
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self.prepare(Task::reply(resp)), self.middlewares))))
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}
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self.idx += 1;
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req
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}
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Err(err) => return Err(err)
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}
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},
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Started::Err(err) => return Err(err),
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}
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}
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}
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}
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fn poll(&mut self) -> Poll<Box<Handle>, Error> {
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let len = self.middlewares.len();
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'outer: loop {
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match self.fut.as_mut().unwrap().poll() {
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Ok(Async::NotReady) => return Ok(Async::NotReady),
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Ok(Async::Ready((mut req, resp))) => {
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self.idx += 1;
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if let Some(resp) = resp {
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return Ok(Async::Ready(Box::new(Handle::new(
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self.idx-1, req,
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self.prepare(Task::reply(resp)), Rc::clone(&self.middlewares)))))
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}
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if self.idx == len {
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let task = (unsafe{&*self.hnd})(
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&mut req, self.payload.take().expect("Something is completlywrong"));
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return Ok(Async::Ready(Box::new(Handle::new(
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self.idx-1, req, self.prepare(task), Rc::clone(&self.middlewares)))))
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} else {
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loop {
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req = match self.middlewares[self.idx].start(req) {
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Started::Done(req) => {
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self.idx += 1;
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req
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}
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Started::Response(req, resp) => {
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self.idx += 1;
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return Ok(Async::Ready(Box::new(Handle::new(
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self.idx-1, req, self.prepare(Task::reply(resp)),
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Rc::clone(&self.middlewares)))))
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},
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Started::Future(fut) => {
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self.fut = Some(fut);
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continue 'outer
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},
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Started::Err(err) => return Err(err),
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}
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}
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}
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}
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Err(err) => return Err(err)
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}
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}
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}
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}
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struct Handle {
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idx: usize,
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req: HttpRequest,
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@ -157,13 +291,8 @@ struct Handle {
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}
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impl Handle {
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fn new(idx: usize,
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req: HttpRequest,
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task: Task,
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mw: Rc<Vec<Box<Middleware>>>) -> Handle
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{
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Handle {
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idx: idx, req: req, task:task, middlewares: mw }
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fn new(idx: usize, req: HttpRequest, task: Task, mw: Rc<Vec<Box<Middleware>>>) -> Handle {
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Handle { idx: idx, req: req, task:task, middlewares: mw }
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}
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fn poll_io<T: Writer>(&mut self, io: &mut T) -> Poll<bool, Error> {
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@ -227,139 +356,6 @@ impl Finish {
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}
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}
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type Fut = Box<Future<Item=(HttpRequest, Option<HttpResponse>), Error=Error>>;
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/// Middlewares start executor
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struct Start {
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idx: usize,
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hnd: *mut Handler,
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disconnected: bool,
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payload: Option<Payload>,
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fut: Option<Fut>,
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middlewares: Rc<Vec<Box<Middleware>>>,
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}
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enum StartResult {
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Ready(Box<Handle>),
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NotReady(Start),
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}
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impl Start {
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fn init(mw: Rc<Vec<Box<Middleware>>>,
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req: HttpRequest,
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handler: PipelineHandler,
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payload: Payload) -> Result<StartResult, Error> {
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Start {
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idx: 0,
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fut: None,
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disconnected: false,
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hnd: handler as *const _ as *mut _,
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payload: Some(payload),
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middlewares: mw,
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}.start(req)
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}
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fn disconnected(&mut self) {
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self.disconnected = true;
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}
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fn prepare(&self, mut task: Task) -> Task {
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if self.disconnected {
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task.disconnected()
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}
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task.set_middlewares(MiddlewaresResponse::new(Rc::clone(&self.middlewares)));
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task
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}
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fn start(mut self, mut req: HttpRequest) -> Result<StartResult, Error> {
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loop {
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if self.idx >= self.middlewares.len() {
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let task = (unsafe{&*self.hnd})(
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&mut req, self.payload.take().expect("Something is completlywrong"));
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return Ok(StartResult::Ready(
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Box::new(Handle::new(self.idx-1, req, self.prepare(task), self.middlewares))))
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} else {
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req = match self.middlewares[self.idx].start(req) {
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Started::Done(req) => {
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self.idx += 1;
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req
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}
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Started::Response(req, resp) => {
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return Ok(StartResult::Ready(
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Box::new(Handle::new(
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self.idx, req, self.prepare(Task::reply(resp)), self.middlewares))))
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},
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Started::Future(mut fut) => {
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match fut.poll() {
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Ok(Async::NotReady) => {
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self.fut = Some(fut);
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return Ok(StartResult::NotReady(self))
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}
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Ok(Async::Ready((req, resp))) => {
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self.idx += 1;
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if let Some(resp) = resp {
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return Ok(StartResult::Ready(
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Box::new(Handle::new(
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self.idx, req,
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self.prepare(Task::reply(resp)), self.middlewares))))
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}
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req
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}
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Err(err) => return Err(err)
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}
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},
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Started::Err(err) => return Err(err),
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}
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}
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}
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}
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fn poll(&mut self) -> Poll<Box<Handle>, Error> {
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'outer: loop {
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match self.fut.as_mut().unwrap().poll() {
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Ok(Async::NotReady) => return Ok(Async::NotReady),
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Ok(Async::Ready((mut req, resp))) => {
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self.idx += 1;
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if let Some(resp) = resp {
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return Ok(Async::Ready(Box::new(Handle::new(
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self.idx, req,
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self.prepare(Task::reply(resp)), Rc::clone(&self.middlewares)))))
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}
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if self.idx >= self.middlewares.len() {
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let task = (unsafe{&*self.hnd})(
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&mut req, self.payload.take().expect("Something is completlywrong"));
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return Ok(Async::Ready(Box::new(Handle::new(
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self.idx-1, req,
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self.prepare(task), Rc::clone(&self.middlewares)))))
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} else {
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loop {
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req = match self.middlewares[self.idx].start(req) {
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Started::Done(req) => {
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self.idx += 1;
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req
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}
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Started::Response(req, resp) => {
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return Ok(Async::Ready(Box::new(Handle::new(
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self.idx, req,
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self.prepare(Task::reply(resp)),
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Rc::clone(&self.middlewares)))))
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},
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Started::Future(fut) => {
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self.fut = Some(fut);
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continue 'outer
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},
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Started::Err(err) => return Err(err),
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}
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}
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}
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}
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Err(err) => return Err(err)
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}
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}
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}
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}
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/// Middlewares response executor
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pub(crate) struct MiddlewaresResponse {
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idx: usize,
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@ -369,9 +365,9 @@ pub(crate) struct MiddlewaresResponse {
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impl MiddlewaresResponse {
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fn new(mw: Rc<Vec<Box<Middleware>>>) -> MiddlewaresResponse {
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fn new(idx: usize, mw: Rc<Vec<Box<Middleware>>>) -> MiddlewaresResponse {
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MiddlewaresResponse {
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idx: 0,
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idx: idx,
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fut: None,
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middlewares: mw }
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}
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@ -410,7 +406,7 @@ impl MiddlewaresResponse {
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Ok(Async::NotReady) =>
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return Ok(Async::NotReady),
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Ok(Async::Ready(resp)) => {
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self.idx += 1;
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self.idx -= 1;
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resp
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}
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Err(err) => return Err(err)
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@ -213,7 +213,7 @@ impl Task {
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}
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}
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// if task is paused, write buffer probably is full
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// if task is paused, write buffer is probably full
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if self.state != TaskRunningState::Paused {
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// process exiting frames
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while let Some(frame) = self.frames.pop_front() {
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@ -334,13 +334,8 @@ impl Task {
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}
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}
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}
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}
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impl Future for Task {
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type Item = ();
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type Error = Error;
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fn poll(&mut self) -> Poll<Self::Item, Self::Error> {
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pub(crate) fn poll(&mut self) -> Poll<(), Error> {
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let mut s = mem::replace(&mut self.stream, TaskStream::None);
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let result = match s {
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