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refactor response body management

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This commit is contained in:
Nikolay Kim 2018-11-17 20:21:28 -08:00
parent e73a97884a
commit 7fed50bcae
12 changed files with 334 additions and 548 deletions
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118
src/body.rs
View file

@ -1,5 +1,5 @@
use std::mem;
use std::sync::Arc;
use std::{fmt, mem};
use bytes::{Bytes, BytesMut};
use futures::{Async, Poll, Stream};
@ -19,7 +19,8 @@ pub enum BodyLength {
Zero,
Sized(usize),
Sized64(u64),
Unsized,
Chunked,
Stream,
}
/// Type that provides this trait can be streamed to a peer.
@ -39,17 +40,6 @@ impl MessageBody for () {
}
}
/// Represents various types of http message body.
pub enum Body {
/// Empty response. `Content-Length` header is set to `0`
Empty,
/// Specific response body.
Binary(Binary),
/// Unspecified streaming response. Developer is responsible for setting
/// right `Content-Length` or `Transfer-Encoding` headers.
Streaming(BodyStream),
}
/// Represents various types of binary body.
/// `Content-Length` header is set to length of the body.
#[derive(Debug, PartialEq)]
@ -65,84 +55,6 @@ pub enum Binary {
SharedVec(Arc<Vec<u8>>),
}
impl Body {
/// Does this body streaming.
#[inline]
pub fn is_streaming(&self) -> bool {
match *self {
Body::Streaming(_) => true,
_ => false,
}
}
/// Is this binary body.
#[inline]
pub fn is_binary(&self) -> bool {
match *self {
Body::Binary(_) => true,
_ => false,
}
}
/// Is this binary empy.
#[inline]
pub fn is_empty(&self) -> bool {
match *self {
Body::Empty => true,
_ => false,
}
}
/// Create body from slice (copy)
pub fn from_slice(s: &[u8]) -> Body {
Body::Binary(Binary::Bytes(Bytes::from(s)))
}
/// Is this binary body.
#[inline]
pub(crate) fn into_binary(self) -> Option<Binary> {
match self {
Body::Binary(b) => Some(b),
_ => None,
}
}
}
impl PartialEq for Body {
fn eq(&self, other: &Body) -> bool {
match *self {
Body::Empty => match *other {
Body::Empty => true,
_ => false,
},
Body::Binary(ref b) => match *other {
Body::Binary(ref b2) => b == b2,
_ => false,
},
Body::Streaming(_) => false,
}
}
}
impl fmt::Debug for Body {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
match *self {
Body::Empty => write!(f, "Body::Empty"),
Body::Binary(ref b) => write!(f, "Body::Binary({:?})", b),
Body::Streaming(_) => write!(f, "Body::Streaming(_)"),
}
}
}
impl<T> From<T> for Body
where
T: Into<Binary>,
{
fn from(b: T) -> Body {
Body::Binary(b.into())
}
}
impl Binary {
#[inline]
/// Returns `true` if body is empty
@ -286,6 +198,22 @@ impl MessageBody for Bytes {
}
}
impl MessageBody for BytesMut {
fn length(&self) -> BodyLength {
BodyLength::Sized(self.len())
}
fn poll_next(&mut self) -> Poll<Option<Bytes>, Error> {
if self.is_empty() {
Ok(Async::Ready(None))
} else {
Ok(Async::Ready(Some(
mem::replace(self, BytesMut::new()).freeze(),
)))
}
}
}
impl MessageBody for &'static str {
fn length(&self) -> BodyLength {
BodyLength::Sized(self.len())
@ -370,7 +298,7 @@ where
S: Stream<Item = Bytes, Error = Error>,
{
fn length(&self) -> BodyLength {
BodyLength::Unsized
BodyLength::Chunked
}
fn poll_next(&mut self) -> Poll<Option<Bytes>, Error> {
@ -382,12 +310,6 @@ where
mod tests {
use super::*;
#[test]
fn test_body_is_streaming() {
assert_eq!(Body::Empty.is_streaming(), false);
assert_eq!(Body::Binary(Binary::from("")).is_streaming(), false);
}
#[test]
fn test_is_empty() {
assert_eq!(Binary::from("").is_empty(), true);

4
src/client/pipeline.rs
View file

@ -100,6 +100,10 @@ where
{
match self.body.as_mut().unwrap().poll_next()? {
Async::Ready(item) => {
// check if body is done
if item.is_none() {
let _ = self.body.take();
}
self.flushed = false;
self.framed
.as_mut()

6
src/client/request.rs
View file

@ -51,12 +51,6 @@ pub struct ClientRequest<B: MessageBody = ()> {
body: B,
}
impl RequestHead {
pub fn clear(&mut self) {
self.headers.clear()
}
}
impl ClientRequest<()> {
/// Create client request builder
pub fn build() -> ClientRequestBuilder {

9
src/error.rs
View file

@ -100,11 +100,10 @@ impl Error {
}
/// Converts error to a response instance and set error message as response body
pub fn response_with_message(self) -> Response {
pub fn response_with_message(self) -> Response<String> {
let message = format!("{}", self);
let mut resp: Response = self.into();
resp.set_body(message);
resp
let resp: Response = self.into();
resp.set_body(message)
}
}
@ -637,7 +636,7 @@ where
InternalErrorType::Status(st) => Response::new(st),
InternalErrorType::Response(ref resp) => {
if let Some(resp) = resp.lock().unwrap().take() {
Response::from_parts(resp)
Response::<()>::from_parts(resp)
} else {
Response::new(StatusCode::INTERNAL_SERVER_ERROR)
}

8
src/h1/client.rs
View file

@ -7,7 +7,7 @@ use tokio_codec::{Decoder, Encoder};
use super::decoder::{MessageDecoder, PayloadDecoder, PayloadItem, PayloadType};
use super::encoder::RequestEncoder;
use super::{Message, MessageType};
use body::{Binary, Body, BodyLength};
use body::{Binary, BodyLength};
use client::ClientResponse;
use config::ServiceConfig;
use error::{ParseError, PayloadError};
@ -164,14 +164,16 @@ impl ClientCodecInner {
write!(buffer.writer(), "{}", len)?;
buffer.extend_from_slice(b"\r\n");
}
BodyLength::Unsized => {
BodyLength::Chunked => {
buffer.extend_from_slice(b"\r\ntransfer-encoding: chunked\r\n")
}
BodyLength::Zero => {
len_is_set = false;
buffer.extend_from_slice(b"\r\n")
}
BodyLength::None => buffer.extend_from_slice(b"\r\n"),
BodyLength::None | BodyLength::Stream => {
buffer.extend_from_slice(b"\r\n")
}
}
let mut has_date = false;

26
src/h1/codec.rs
View file

@ -8,12 +8,13 @@ use tokio_codec::{Decoder, Encoder};
use super::decoder::{MessageDecoder, PayloadDecoder, PayloadItem, PayloadType};
use super::encoder::ResponseEncoder;
use super::{Message, MessageType};
use body::{Binary, Body, BodyLength};
use body::{Binary, BodyLength};
use config::ServiceConfig;
use error::ParseError;
use helpers;
use http::header::{HeaderValue, CONNECTION, CONTENT_LENGTH, DATE, TRANSFER_ENCODING};
use http::{Method, Version};
use message::ResponseHead;
use request::Request;
use response::Response;
@ -98,9 +99,9 @@ impl Codec {
}
/// prepare transfer encoding
pub fn prepare_te(&mut self, res: &mut Response) {
pub fn prepare_te(&mut self, head: &mut ResponseHead, length: &mut BodyLength) {
self.te
.update(res, self.flags.contains(Flags::HEAD), self.version);
.update(head, self.flags.contains(Flags::HEAD), self.version, length);
}
fn encode_response(
@ -135,17 +136,8 @@ impl Codec {
// render message
{
let reason = msg.reason().as_bytes();
if let Body::Binary(ref bytes) = msg.body() {
buffer.reserve(
256 + msg.headers().len() * AVERAGE_HEADER_SIZE
+ bytes.len()
+ reason.len(),
);
} else {
buffer.reserve(
256 + msg.headers().len() * AVERAGE_HEADER_SIZE + reason.len(),
);
}
buffer
.reserve(256 + msg.headers().len() * AVERAGE_HEADER_SIZE + reason.len());
// status line
helpers::write_status_line(self.version, msg.status().as_u16(), buffer);
@ -154,7 +146,7 @@ impl Codec {
// content length
let mut len_is_set = true;
match self.te.length {
BodyLength::Unsized => {
BodyLength::Chunked => {
buffer.extend_from_slice(b"\r\ntransfer-encoding: chunked\r\n")
}
BodyLength::Zero => {
@ -167,7 +159,9 @@ impl Codec {
write!(buffer.writer(), "{}", len)?;
buffer.extend_from_slice(b"\r\n");
}
BodyLength::None => buffer.extend_from_slice(b"\r\n"),
BodyLength::None | BodyLength::Stream => {
buffer.extend_from_slice(b"\r\n")
}
}
// write headers

80
src/h1/dispatcher.rs
View file

@ -13,7 +13,7 @@ use tokio_timer::Delay;
use error::{ParseError, PayloadError};
use payload::{Payload, PayloadSender, PayloadStatus, PayloadWriter};
use body::{Body, BodyStream};
use body::{BodyLength, MessageBody};
use config::ServiceConfig;
use error::DispatchError;
use request::Request;
@ -37,14 +37,14 @@ bitflags! {
}
/// Dispatcher for HTTP/1.1 protocol
pub struct Dispatcher<T, S: Service>
pub struct Dispatcher<T, S: Service, B: MessageBody>
where
S::Error: Debug,
{
inner: Option<InnerDispatcher<T, S>>,
inner: Option<InnerDispatcher<T, S, B>>,
}
struct InnerDispatcher<T, S: Service>
struct InnerDispatcher<T, S: Service, B: MessageBody>
where
S::Error: Debug,
{
@ -54,7 +54,7 @@ where
error: Option<DispatchError<S::Error>>,
config: ServiceConfig,
state: State<S>,
state: State<S, B>,
payload: Option<PayloadSender>,
messages: VecDeque<DispatcherMessage>,
unhandled: Option<Request>,
@ -68,13 +68,13 @@ enum DispatcherMessage {
Error(Response),
}
enum State<S: Service> {
enum State<S: Service, B: MessageBody> {
None,
ServiceCall(S::Future),
SendPayload(BodyStream),
SendPayload(B),
}
impl<S: Service> State<S> {
impl<S: Service, B: MessageBody> State<S, B> {
fn is_empty(&self) -> bool {
if let State::None = self {
true
@ -84,11 +84,12 @@ impl<S: Service> State<S> {
}
}
impl<T, S> Dispatcher<T, S>
impl<T, S, B> Dispatcher<T, S, B>
where
T: AsyncRead + AsyncWrite,
S: Service<Request = Request, Response = Response>,
S: Service<Request = Request, Response = Response<B>>,
S::Error: Debug,
B: MessageBody,
{
/// Create http/1 dispatcher.
pub fn new(stream: T, config: ServiceConfig, service: S) -> Self {
@ -137,11 +138,12 @@ where
}
}
impl<T, S> InnerDispatcher<T, S>
impl<T, S, B> InnerDispatcher<T, S, B>
where
T: AsyncRead + AsyncWrite,
S: Service<Request = Request, Response = Response>,
S: Service<Request = Request, Response = Response<B>>,
S::Error: Debug,
B: MessageBody,
{
fn can_read(&self) -> bool {
if self.flags.contains(Flags::DISCONNECTED) {
@ -186,11 +188,11 @@ where
}
}
fn send_response(
fn send_response<B1: MessageBody>(
&mut self,
message: Response,
body: Body,
) -> Result<State<S>, DispatchError<S::Error>> {
body: B1,
) -> Result<State<S, B1>, DispatchError<S::Error>> {
self.framed
.force_send(Message::Item(message))
.map_err(|err| {
@ -203,15 +205,9 @@ where
self.flags
.set(Flags::KEEPALIVE, self.framed.get_codec().keepalive());
self.flags.remove(Flags::FLUSHED);
match body {
Body::Empty => Ok(State::None),
Body::Streaming(stream) => Ok(State::SendPayload(stream)),
Body::Binary(mut bin) => {
self.flags.remove(Flags::FLUSHED);
self.framed.force_send(Message::Chunk(Some(bin.take())))?;
self.framed.force_send(Message::Chunk(None))?;
Ok(State::None)
}
match body.length() {
BodyLength::None | BodyLength::Zero => Ok(State::None),
_ => Ok(State::SendPayload(body)),
}
}
@ -224,15 +220,18 @@ where
Some(self.handle_request(req)?)
}
Some(DispatcherMessage::Error(res)) => {
Some(self.send_response(res, Body::Empty)?)
self.send_response(res, ())?;
None
}
None => None,
},
State::ServiceCall(mut fut) => {
match fut.poll().map_err(DispatchError::Service)? {
Async::Ready(mut res) => {
self.framed.get_codec_mut().prepare_te(&mut res);
let body = res.replace_body(Body::Empty);
let (mut res, body) = res.replace_body(());
self.framed
.get_codec_mut()
.prepare_te(res.head_mut(), &mut body.length());
Some(self.send_response(res, body)?)
}
Async::NotReady => {
@ -244,7 +243,10 @@ where
State::SendPayload(mut stream) => {
loop {
if !self.framed.is_write_buf_full() {
match stream.poll().map_err(|_| DispatchError::Unknown)? {
match stream
.poll_next()
.map_err(|_| DispatchError::Unknown)?
{
Async::Ready(Some(item)) => {
self.flags.remove(Flags::FLUSHED);
self.framed
@ -290,12 +292,14 @@ where
fn handle_request(
&mut self,
req: Request,
) -> Result<State<S>, DispatchError<S::Error>> {
) -> Result<State<S, B>, DispatchError<S::Error>> {
let mut task = self.service.call(req);
match task.poll().map_err(DispatchError::Service)? {
Async::Ready(mut res) => {
self.framed.get_codec_mut().prepare_te(&mut res);
let body = res.replace_body(Body::Empty);
Async::Ready(res) => {
let (mut res, body) = res.replace_body(());
self.framed
.get_codec_mut()
.prepare_te(res.head_mut(), &mut body.length());
self.send_response(res, body)
}
Async::NotReady => Ok(State::ServiceCall(task)),
@ -436,10 +440,9 @@ where
// timeout on first request (slow request) return 408
trace!("Slow request timeout");
self.flags.insert(Flags::STARTED | Flags::DISCONNECTED);
self.state = self.send_response(
Response::RequestTimeout().finish(),
Body::Empty,
)?;
let _ = self
.send_response(Response::RequestTimeout().finish(), ());
self.state = State::None;
}
} else if let Some(deadline) = self.config.keep_alive_expire() {
self.ka_timer.as_mut().map(|timer| {
@ -462,11 +465,12 @@ where
}
}
impl<T, S> Future for Dispatcher<T, S>
impl<T, S, B> Future for Dispatcher<T, S, B>
where
T: AsyncRead + AsyncWrite,
S: Service<Request = Request, Response = Response>,
S: Service<Request = Request, Response = Response<B>>,
S::Error: Debug,
B: MessageBody,
{
type Item = H1ServiceResult<T>;
type Error = DispatchError<S::Error>;

122
src/h1/encoder.rs
View file

@ -8,10 +8,10 @@ use bytes::{Bytes, BytesMut};
use http::header::{HeaderValue, ACCEPT_ENCODING, CONTENT_LENGTH};
use http::{StatusCode, Version};
use body::{Binary, Body, BodyLength};
use body::{Binary, BodyLength};
use header::ContentEncoding;
use http::Method;
use message::RequestHead;
use message::{RequestHead, ResponseHead};
use request::Request;
use response::Response;
@ -43,116 +43,36 @@ impl ResponseEncoder {
self.te.encode_eof(buf)
}
pub fn update(&mut self, resp: &mut Response, head: bool, version: Version) {
pub fn update(
&mut self,
resp: &mut ResponseHead,
head: bool,
version: Version,
length: &mut BodyLength,
) {
self.head = head;
let mut len = 0;
let has_body = match resp.body() {
Body::Empty => false,
Body::Binary(ref bin) => {
len = bin.len();
true
}
_ => true,
};
let has_body = match resp.body() {
Body::Empty => false,
_ => true,
};
let transfer = match resp.body() {
Body::Empty => {
self.length = match resp.status() {
let transfer = match length {
BodyLength::Zero => {
match resp.status {
StatusCode::NO_CONTENT
| StatusCode::CONTINUE
| StatusCode::SWITCHING_PROTOCOLS
| StatusCode::PROCESSING => BodyLength::None,
_ => BodyLength::Zero,
};
| StatusCode::PROCESSING => *length = BodyLength::None,
_ => (),
}
TransferEncoding::empty()
}
Body::Binary(_) => {
self.length = BodyLength::Sized(len);
TransferEncoding::length(len as u64)
}
Body::Streaming(_) => {
if resp.upgrade() {
self.length = BodyLength::None;
TransferEncoding::eof()
} else {
self.streaming_encoding(version, resp)
}
}
BodyLength::Sized(len) => TransferEncoding::length(*len as u64),
BodyLength::Sized64(len) => TransferEncoding::length(*len),
BodyLength::Chunked => TransferEncoding::chunked(),
BodyLength::Stream => TransferEncoding::eof(),
BodyLength::None => TransferEncoding::length(0),
};
// check for head response
if self.head {
resp.set_body(Body::Empty);
} else {
if !self.head {
self.te = transfer;
}
}
fn streaming_encoding(
&mut self,
version: Version,
resp: &mut Response,
) -> TransferEncoding {
match resp.chunked() {
Some(true) => {
// Enable transfer encoding
if version == Version::HTTP_2 {
self.length = BodyLength::None;
TransferEncoding::eof()
} else {
self.length = BodyLength::Unsized;
TransferEncoding::chunked()
}
}
Some(false) => TransferEncoding::eof(),
None => {
// if Content-Length is specified, then use it as length hint
let (len, chunked) =
if let Some(len) = resp.headers().get(CONTENT_LENGTH) {
// Content-Length
if let Ok(s) = len.to_str() {
if let Ok(len) = s.parse::<u64>() {
(Some(len), false)
} else {
error!("illegal Content-Length: {:?}", len);
(None, false)
}
} else {
error!("illegal Content-Length: {:?}", len);
(None, false)
}
} else {
(None, true)
};
if !chunked {
if let Some(len) = len {
self.length = BodyLength::Sized64(len);
TransferEncoding::length(len)
} else {
TransferEncoding::eof()
}
} else {
// Enable transfer encoding
match version {
Version::HTTP_11 => {
self.length = BodyLength::Unsized;
TransferEncoding::chunked()
}
_ => {
self.length = BodyLength::None;
TransferEncoding::eof()
}
}
}
}
}
}
}
#[derive(Debug)]

54
src/h1/service.rs
View file

@ -8,6 +8,7 @@ use futures::future::{ok, FutureResult};
use futures::{Async, Future, Poll, Stream};
use tokio_io::{AsyncRead, AsyncWrite};
use body::MessageBody;
use config::{KeepAlive, ServiceConfig};
use error::{DispatchError, ParseError};
use request::Request;
@ -18,17 +19,18 @@ use super::dispatcher::Dispatcher;
use super::{H1ServiceResult, Message};
/// `NewService` implementation for HTTP1 transport
pub struct H1Service<T, S> {
pub struct H1Service<T, S, B> {
srv: S,
cfg: ServiceConfig,
_t: PhantomData<T>,
_t: PhantomData<(T, B)>,
}
impl<T, S> H1Service<T, S>
impl<T, S, B> H1Service<T, S, B>
where
S: NewService<Request = Request, Response = Response> + Clone,
S: NewService<Request = Request, Response = Response<B>> + Clone,
S::Service: Clone,
S::Error: Debug,
B: MessageBody,
{
/// Create new `HttpService` instance.
pub fn new<F: IntoNewService<S>>(service: F) -> Self {
@ -47,19 +49,20 @@ where
}
}
impl<T, S> NewService for H1Service<T, S>
impl<T, S, B> NewService for H1Service<T, S, B>
where
T: AsyncRead + AsyncWrite,
S: NewService<Request = Request, Response = Response> + Clone,
S: NewService<Request = Request, Response = Response<B>> + Clone,
S::Service: Clone,
S::Error: Debug,
B: MessageBody,
{
type Request = T;
type Response = H1ServiceResult<T>;
type Error = DispatchError<S::Error>;
type InitError = S::InitError;
type Service = H1ServiceHandler<T, S::Service>;
type Future = H1ServiceResponse<T, S>;
type Service = H1ServiceHandler<T, S::Service, B>;
type Future = H1ServiceResponse<T, S, B>;
fn new_service(&self) -> Self::Future {
H1ServiceResponse {
@ -180,7 +183,11 @@ where
}
/// Finish service configuration and create `H1Service` instance.
pub fn finish<F: IntoNewService<S>>(self, service: F) -> H1Service<T, S> {
pub fn finish<F, B>(self, service: F) -> H1Service<T, S, B>
where
B: MessageBody,
F: IntoNewService<S>,
{
let cfg = ServiceConfig::new(
self.keep_alive,
self.client_timeout,
@ -195,20 +202,21 @@ where
}
#[doc(hidden)]
pub struct H1ServiceResponse<T, S: NewService> {
pub struct H1ServiceResponse<T, S: NewService, B> {
fut: S::Future,
cfg: Option<ServiceConfig>,
_t: PhantomData<T>,
_t: PhantomData<(T, B)>,
}
impl<T, S> Future for H1ServiceResponse<T, S>
impl<T, S, B> Future for H1ServiceResponse<T, S, B>
where
T: AsyncRead + AsyncWrite,
S: NewService<Request = Request, Response = Response>,
S: NewService<Request = Request, Response = Response<B>>,
S::Service: Clone,
S::Error: Debug,
B: MessageBody,
{
type Item = H1ServiceHandler<T, S::Service>;
type Item = H1ServiceHandler<T, S::Service, B>;
type Error = S::InitError;
fn poll(&mut self) -> Poll<Self::Item, Self::Error> {
@ -221,18 +229,19 @@ where
}
/// `Service` implementation for HTTP1 transport
pub struct H1ServiceHandler<T, S> {
pub struct H1ServiceHandler<T, S, B> {
srv: S,
cfg: ServiceConfig,
_t: PhantomData<T>,
_t: PhantomData<(T, B)>,
}
impl<T, S> H1ServiceHandler<T, S>
impl<T, S, B> H1ServiceHandler<T, S, B>
where
S: Service<Request = Request, Response = Response> + Clone,
S: Service<Request = Request, Response = Response<B>> + Clone,
S::Error: Debug,
B: MessageBody,
{
fn new(cfg: ServiceConfig, srv: S) -> H1ServiceHandler<T, S> {
fn new(cfg: ServiceConfig, srv: S) -> H1ServiceHandler<T, S, B> {
H1ServiceHandler {
srv,
cfg,
@ -241,16 +250,17 @@ where
}
}
impl<T, S> Service for H1ServiceHandler<T, S>
impl<T, S, B> Service for H1ServiceHandler<T, S, B>
where
T: AsyncRead + AsyncWrite,
S: Service<Request = Request, Response = Response> + Clone,
S: Service<Request = Request, Response = Response<B>> + Clone,
S::Error: Debug,
B: MessageBody,
{
type Request = T;
type Response = H1ServiceResult<T>;
type Error = DispatchError<S::Error>;
type Future = Dispatcher<T, S>;
type Future = Dispatcher<T, S, B>;
fn poll_ready(&mut self) -> Poll<(), Self::Error> {
self.srv.poll_ready().map_err(DispatchError::Service)

2
src/lib.rs
View file

@ -129,7 +129,7 @@ pub mod h1;
pub(crate) mod helpers;
pub mod test;
pub mod ws;
pub use body::{Binary, Body};
pub use body::{Binary, MessageBody};
pub use error::{Error, ResponseError, Result};
pub use extensions::Extensions;
pub use httpmessage::HttpMessage;

309
src/response.rs
View file

@ -2,7 +2,7 @@
use std::cell::RefCell;
use std::collections::VecDeque;
use std::io::Write;
use std::{fmt, mem, str};
use std::{fmt, str};
use bytes::{BufMut, Bytes, BytesMut};
use cookie::{Cookie, CookieJar};
@ -12,7 +12,7 @@ use http::{Error as HttpError, HeaderMap, HttpTryFrom, StatusCode, Version};
use serde::Serialize;
use serde_json;
use body::Body;
use body::{MessageBody, MessageBodyStream};
use error::Error;
use header::{ContentEncoding, Header, IntoHeaderValue};
use message::{Head, MessageFlags, ResponseHead};
@ -32,19 +32,9 @@ pub enum ConnectionType {
}
/// An HTTP Response
pub struct Response(Box<InnerResponse>);
impl Response {
#[inline]
fn get_ref(&self) -> &InnerResponse {
self.0.as_ref()
}
#[inline]
fn get_mut(&mut self) -> &mut InnerResponse {
self.0.as_mut()
}
pub struct Response<B: MessageBody = ()>(Box<InnerResponse>, B);
impl Response<()> {
/// Create http response builder with specific status.
#[inline]
pub fn build(status: StatusCode) -> ResponseBuilder {
@ -60,13 +50,7 @@ impl Response {
/// Constructs a response
#[inline]
pub fn new(status: StatusCode) -> Response {
ResponsePool::with_body(status, Body::Empty)
}
/// Constructs a response with body
#[inline]
pub fn with_body<B: Into<Body>>(status: StatusCode, body: B) -> Response {
ResponsePool::with_body(status, body.into())
ResponsePool::with_body(status, ())
}
/// Constructs an error response
@ -98,6 +82,29 @@ impl Response {
cookies: jar,
}
}
}
impl<B: MessageBody> Response<B> {
#[inline]
fn get_ref(&self) -> &InnerResponse {
self.0.as_ref()
}
#[inline]
fn get_mut(&mut self) -> &mut InnerResponse {
self.0.as_mut()
}
#[inline]
pub(crate) fn head_mut(&mut self) -> &mut ResponseHead {
&mut self.0.as_mut().head
}
/// Constructs a response with body
#[inline]
pub fn with_body(status: StatusCode, body: B) -> Response<B> {
ResponsePool::with_body(status, body.into())
}
/// The source `error` for this response
#[inline]
@ -105,6 +112,39 @@ impl Response {
self.get_ref().error.as_ref()
}
/// Get the response status code
#[inline]
pub fn status(&self) -> StatusCode {
self.get_ref().head.status
}
/// Set the `StatusCode` for this response
#[inline]
pub fn status_mut(&mut self) -> &mut StatusCode {
&mut self.get_mut().head.status
}
/// Get custom reason for the response
#[inline]
pub fn reason(&self) -> &str {
if let Some(reason) = self.get_ref().head.reason {
reason
} else {
self.get_ref()
.head
.status
.canonical_reason()
.unwrap_or("<unknown status code>")
}
}
/// Set the custom reason for the response
#[inline]
pub fn set_reason(&mut self, reason: &'static str) -> &mut Self {
self.get_mut().head.reason = Some(reason);
self
}
/// Get the headers from the response
#[inline]
pub fn headers(&self) -> &HeaderMap {
@ -167,39 +207,6 @@ impl Response {
count
}
/// Get the response status code
#[inline]
pub fn status(&self) -> StatusCode {
self.get_ref().head.status
}
/// Set the `StatusCode` for this response
#[inline]
pub fn status_mut(&mut self) -> &mut StatusCode {
&mut self.get_mut().head.status
}
/// Get custom reason for the response
#[inline]
pub fn reason(&self) -> &str {
if let Some(reason) = self.get_ref().head.reason {
reason
} else {
self.get_ref()
.head
.status
.canonical_reason()
.unwrap_or("<unknown status code>")
}
}
/// Set the custom reason for the response
#[inline]
pub fn set_reason(&mut self, reason: &'static str) -> &mut Self {
self.get_mut().head.reason = Some(reason);
self
}
/// Set connection type
pub fn set_connection_type(&mut self, conn: ConnectionType) -> &mut Self {
self.get_mut().connection_type = Some(conn);
@ -224,38 +231,20 @@ impl Response {
}
}
/// is chunked encoding enabled
#[inline]
pub fn chunked(&self) -> Option<bool> {
self.get_ref().chunked
}
/// Content encoding
#[inline]
pub fn content_encoding(&self) -> Option<ContentEncoding> {
self.get_ref().encoding
}
/// Set content encoding
pub fn set_content_encoding(&mut self, enc: ContentEncoding) -> &mut Self {
self.get_mut().encoding = Some(enc);
self
}
/// Get body os this response
#[inline]
pub fn body(&self) -> &Body {
&self.get_ref().body
pub fn body(&self) -> &B {
&self.1
}
/// Set a body
pub fn set_body<B: Into<Body>>(&mut self, body: B) {
self.get_mut().body = body.into();
pub fn set_body<B2: MessageBody>(self, body: B2) -> Response<B2> {
Response(self.0, body)
}
/// Set a body and return previous body value
pub fn replace_body<B: Into<Body>>(&mut self, body: B) -> Body {
mem::replace(&mut self.get_mut().body, body.into())
pub fn replace_body<B2: MessageBody>(self, body: B2) -> (Response<B2>, B) {
(Response(self.0, body), self.1)
}
/// Size of response in bytes, excluding HTTP headers
@ -268,16 +257,6 @@ impl Response {
self.get_mut().response_size = size;
}
/// Set write buffer capacity
pub fn write_buffer_capacity(&self) -> usize {
self.get_ref().write_capacity
}
/// Set write buffer capacity
pub fn set_write_buffer_capacity(&mut self, cap: usize) {
self.get_mut().write_capacity = cap;
}
pub(crate) fn release(self) {
ResponsePool::release(self.0);
}
@ -287,7 +266,7 @@ impl Response {
}
pub(crate) fn from_parts(parts: ResponseParts) -> Response {
Response(Box::new(InnerResponse::from_parts(parts)))
Response(Box::new(InnerResponse::from_parts(parts)), ())
}
}
@ -454,24 +433,6 @@ impl ResponseBuilder {
self.connection_type(ConnectionType::Close)
}
/// Enables automatic chunked transfer encoding
#[inline]
pub fn chunked(&mut self) -> &mut Self {
if let Some(parts) = parts(&mut self.response, &self.err) {
parts.chunked = Some(true);
}
self
}
/// Force disable chunked encoding
#[inline]
pub fn no_chunking(&mut self) -> &mut Self {
if let Some(parts) = parts(&mut self.response, &self.err) {
parts.chunked = Some(false);
}
self
}
/// Set response content type
#[inline]
pub fn content_type<V>(&mut self, value: V) -> &mut Self
@ -580,63 +541,73 @@ impl ResponseBuilder {
self
}
/// Set write buffer capacity
///
/// This parameter makes sense only for streaming response
/// or actor. If write buffer reaches specified capacity, stream or actor
/// get paused.
///
/// Default write buffer capacity is 64kb
pub fn write_buffer_capacity(&mut self, cap: usize) -> &mut Self {
if let Some(parts) = parts(&mut self.response, &self.err) {
parts.write_capacity = cap;
}
self
}
// /// Set write buffer capacity
// ///
// /// This parameter makes sense only for streaming response
// /// or actor. If write buffer reaches specified capacity, stream or actor
// /// get paused.
// ///
// /// Default write buffer capacity is 64kb
// pub fn write_buffer_capacity(&mut self, cap: usize) -> &mut Self {
// if let Some(parts) = parts(&mut self.response, &self.err) {
// parts.write_capacity = cap;
// }
// self
// }
/// Set a body and generate `Response`.
///
/// `ResponseBuilder` can not be used after this call.
pub fn body<B: Into<Body>>(&mut self, body: B) -> Response {
if let Some(e) = self.err.take() {
return Error::from(e).into();
}
pub fn body<B: MessageBody>(&mut self, body: B) -> Response<B> {
let mut error = if let Some(e) = self.err.take() {
Some(Error::from(e))
} else {
None
};
let mut response = self.response.take().expect("cannot reuse response builder");
if let Some(ref jar) = self.cookies {
for cookie in jar.delta() {
match HeaderValue::from_str(&cookie.to_string()) {
Ok(val) => response.head.headers.append(header::SET_COOKIE, val),
Err(e) => return Error::from(e).into(),
Ok(val) => {
let _ = response.head.headers.append(header::SET_COOKIE, val);
}
Err(e) => if error.is_none() {
error = Some(Error::from(e));
},
};
}
}
response.body = body.into();
Response(response)
if let Some(error) = error {
response.error = Some(error);
}
Response(response, body)
}
#[inline]
/// Set a streaming body and generate `Response`.
///
/// `ResponseBuilder` can not be used after this call.
pub fn streaming<S, E>(&mut self, stream: S) -> Response
pub fn streaming<S, E>(&mut self, stream: S) -> Response<impl MessageBody>
where
S: Stream<Item = Bytes, Error = E> + 'static,
E: Into<Error>,
{
self.body(Body::Streaming(Box::new(stream.map_err(|e| e.into()))))
self.body(MessageBodyStream::new(stream.map_err(|e| e.into())))
}
/// Set a json body and generate `Response`
///
/// `ResponseBuilder` can not be used after this call.
pub fn json<T: Serialize>(&mut self, value: T) -> Response {
pub fn json<T: Serialize>(&mut self, value: T) -> Response<String> {
self.json2(&value)
}
/// Set a json body and generate `Response`
///
/// `ResponseBuilder` can not be used after this call.
pub fn json2<T: Serialize>(&mut self, value: &T) -> Response {
pub fn json2<T: Serialize>(&mut self, value: &T) -> Response<String> {
match serde_json::to_string(value) {
Ok(body) => {
let contains = if let Some(parts) = parts(&mut self.response, &self.err)
@ -651,7 +622,10 @@ impl ResponseBuilder {
self.body(body)
}
Err(e) => Error::from(e).into(),
Err(e) => {
let mut res: Response = Error::from(e).into();
res.replace_body(String::new()).0
}
}
}
@ -659,8 +633,8 @@ impl ResponseBuilder {
/// Set an empty body and generate `Response`
///
/// `ResponseBuilder` can not be used after this call.
pub fn finish(&mut self) -> Response {
self.body(Body::Empty)
pub fn finish(&mut self) -> Response<()> {
self.body(())
}
/// This method construct new `ResponseBuilder`
@ -701,7 +675,7 @@ impl From<ResponseBuilder> for Response {
}
}
impl From<&'static str> for Response {
impl From<&'static str> for Response<&'static str> {
fn from(val: &'static str) -> Self {
Response::Ok()
.content_type("text/plain; charset=utf-8")
@ -709,7 +683,7 @@ impl From<&'static str> for Response {
}
}
impl From<&'static [u8]> for Response {
impl From<&'static [u8]> for Response<&'static [u8]> {
fn from(val: &'static [u8]) -> Self {
Response::Ok()
.content_type("application/octet-stream")
@ -717,7 +691,7 @@ impl From<&'static [u8]> for Response {
}
}
impl From<String> for Response {
impl From<String> for Response<String> {
fn from(val: String) -> Self {
Response::Ok()
.content_type("text/plain; charset=utf-8")
@ -725,15 +699,7 @@ impl From<String> for Response {
}
}
impl<'a> From<&'a String> for Response {
fn from(val: &'a String) -> Self {
Response::build(StatusCode::OK)
.content_type("text/plain; charset=utf-8")
.body(val)
}
}
impl From<Bytes> for Response {
impl From<Bytes> for Response<Bytes> {
fn from(val: Bytes) -> Self {
Response::Ok()
.content_type("application/octet-stream")
@ -741,7 +707,7 @@ impl From<Bytes> for Response {
}
}
impl From<BytesMut> for Response {
impl From<BytesMut> for Response<BytesMut> {
fn from(val: BytesMut) -> Self {
Response::Ok()
.content_type("application/octet-stream")
@ -751,8 +717,6 @@ impl From<BytesMut> for Response {
struct InnerResponse {
head: ResponseHead,
body: Body,
chunked: Option<bool>,
encoding: Option<ContentEncoding>,
connection_type: Option<ConnectionType>,
write_capacity: usize,
@ -763,7 +727,6 @@ struct InnerResponse {
pub(crate) struct ResponseParts {
head: ResponseHead,
body: Option<Bytes>,
encoding: Option<ContentEncoding>,
connection_type: Option<ConnectionType>,
error: Option<Error>,
@ -771,11 +734,7 @@ pub(crate) struct ResponseParts {
impl InnerResponse {
#[inline]
fn new(
status: StatusCode,
body: Body,
pool: &'static ResponsePool,
) -> InnerResponse {
fn new(status: StatusCode, pool: &'static ResponsePool) -> InnerResponse {
InnerResponse {
head: ResponseHead {
status,
@ -784,9 +743,7 @@ impl InnerResponse {
reason: None,
flags: MessageFlags::empty(),
},
body,
pool,
chunked: None,
encoding: None,
connection_type: None,
response_size: 0,
@ -796,18 +753,8 @@ impl InnerResponse {
}
/// This is for failure, we can not have Send + Sync on Streaming and Actor response
fn into_parts(mut self) -> ResponseParts {
let body = match mem::replace(&mut self.body, Body::Empty) {
Body::Empty => None,
Body::Binary(mut bin) => Some(bin.take()),
Body::Streaming(_) => {
error!("Streaming or Actor body is not support by error response");
None
}
};
fn into_parts(self) -> ResponseParts {
ResponseParts {
body,
head: self.head,
encoding: self.encoding,
connection_type: self.connection_type,
@ -816,16 +763,8 @@ impl InnerResponse {
}
fn from_parts(parts: ResponseParts) -> InnerResponse {
let body = if let Some(ref body) = parts.body {
Body::Binary(body.clone().into())
} else {
Body::Empty
};
InnerResponse {
body,
head: parts.head,
chunked: None,
encoding: parts.encoding,
connection_type: parts.connection_type,
response_size: 0,
@ -864,7 +803,7 @@ impl ResponsePool {
cookies: None,
}
} else {
let msg = Box::new(InnerResponse::new(status, Body::Empty, pool));
let msg = Box::new(InnerResponse::new(status, pool));
ResponseBuilder {
response: Some(msg),
err: None,
@ -874,17 +813,16 @@ impl ResponsePool {
}
#[inline]
pub fn get_response(
pub fn get_response<B: MessageBody>(
pool: &'static ResponsePool,
status: StatusCode,
body: Body,
) -> Response {
body: B,
) -> Response<B> {
if let Some(mut msg) = pool.0.borrow_mut().pop_front() {
msg.head.status = status;
msg.body = body;
Response(msg)
Response(msg, body)
} else {
Response(Box::new(InnerResponse::new(status, body, pool)))
Response(Box::new(InnerResponse::new(status, pool)), body)
}
}
@ -894,7 +832,7 @@ impl ResponsePool {
}
#[inline]
fn with_body(status: StatusCode, body: Body) -> Response {
fn with_body<B: MessageBody>(status: StatusCode, body: B) -> Response<B> {
POOL.with(|pool| ResponsePool::get_response(pool, status, body))
}
@ -903,7 +841,6 @@ impl ResponsePool {
let mut p = inner.pool.0.borrow_mut();
if p.len() < 128 {
inner.head.clear();
inner.chunked = None;
inner.encoding = None;
inner.connection_type = None;
inner.response_size = 0;

144
src/service.rs
View file

@ -6,7 +6,7 @@ use futures::future::{ok, Either, FutureResult};
use futures::{Async, AsyncSink, Future, Poll, Sink};
use tokio_io::{AsyncRead, AsyncWrite};
use body::Body;
use body::MessageBody;
use error::{Error, ResponseError};
use h1::{Codec, Message};
use response::Response;
@ -58,11 +58,11 @@ where
match req {
Ok(r) => Either::A(ok(r)),
Err((e, framed)) => {
let mut resp = e.error_response();
resp.set_body(format!("{}", e));
let mut res = e.error_response().set_body(format!("{}", e));
let (res, _body) = res.replace_body(());
Either::B(SendErrorFut {
framed: Some(framed),
res: Some(resp.into()),
res: Some(res.into()),
err: Some(e),
_t: PhantomData,
})
@ -109,30 +109,30 @@ where
}
}
pub struct SendResponse<T>(PhantomData<(T,)>);
pub struct SendResponse<T, B>(PhantomData<(T, B)>);
impl<T> Default for SendResponse<T>
where
T: AsyncRead + AsyncWrite,
{
impl<T, B> Default for SendResponse<T, B> {
fn default() -> Self {
SendResponse(PhantomData)
}
}
impl<T> SendResponse<T>
impl<T, B> SendResponse<T, B>
where
T: AsyncRead + AsyncWrite,
B: MessageBody,
{
pub fn send(
mut framed: Framed<T, Codec>,
mut res: Response,
res: Response<B>,
) -> impl Future<Item = Framed<T, Codec>, Error = Error> {
// init codec
framed.get_codec_mut().prepare_te(&mut res);
// extract body from response
let body = res.replace_body(Body::Empty);
let (mut res, body) = res.replace_body(());
// init codec
framed
.get_codec_mut()
.prepare_te(&mut res.head_mut(), &mut body.length());
// write response
SendResponseFut {
@ -143,15 +143,16 @@ where
}
}
impl<T> NewService for SendResponse<T>
impl<T, B> NewService for SendResponse<T, B>
where
T: AsyncRead + AsyncWrite,
B: MessageBody,
{
type Request = (Response, Framed<T, Codec>);
type Request = (Response<B>, Framed<T, Codec>);
type Response = Framed<T, Codec>;
type Error = Error;
type InitError = ();
type Service = SendResponse<T>;
type Service = SendResponse<T, B>;
type Future = FutureResult<Self::Service, Self::InitError>;
fn new_service(&self) -> Self::Future {
@ -159,22 +160,25 @@ where
}
}
impl<T> Service for SendResponse<T>
impl<T, B> Service for SendResponse<T, B>
where
T: AsyncRead + AsyncWrite,
B: MessageBody,
{
type Request = (Response, Framed<T, Codec>);
type Request = (Response<B>, Framed<T, Codec>);
type Response = Framed<T, Codec>;
type Error = Error;
type Future = SendResponseFut<T>;
type Future = SendResponseFut<T, B>;
fn poll_ready(&mut self) -> Poll<(), Self::Error> {
Ok(Async::Ready(()))
}
fn call(&mut self, (mut res, mut framed): Self::Request) -> Self::Future {
framed.get_codec_mut().prepare_te(&mut res);
let body = res.replace_body(Body::Empty);
fn call(&mut self, (res, mut framed): Self::Request) -> Self::Future {
let (mut res, body) = res.replace_body(());
framed
.get_codec_mut()
.prepare_te(res.head_mut(), &mut body.length());
SendResponseFut {
res: Some(Message::Item(res)),
body: Some(body),
@ -183,73 +187,69 @@ where
}
}
pub struct SendResponseFut<T> {
pub struct SendResponseFut<T, B> {
res: Option<Message<Response>>,
body: Option<Body>,
body: Option<B>,
framed: Option<Framed<T, Codec>>,
}
impl<T> Future for SendResponseFut<T>
impl<T, B> Future for SendResponseFut<T, B>
where
T: AsyncRead + AsyncWrite,
B: MessageBody,
{
type Item = Framed<T, Codec>;
type Error = Error;
fn poll(&mut self) -> Poll<Self::Item, Self::Error> {
// send response
if self.res.is_some() {
loop {
let mut body_ready = self.body.is_some();
let framed = self.framed.as_mut().unwrap();
if !framed.is_write_buf_full() {
if let Some(res) = self.res.take() {
framed.force_send(res)?;
}
}
}
// send body
if self.res.is_none() && self.body.is_some() {
let framed = self.framed.as_mut().unwrap();
if !framed.is_write_buf_full() {
let body = self.body.take().unwrap();
match body {
Body::Empty => (),
Body::Streaming(mut stream) => loop {
match stream.poll()? {
Async::Ready(item) => {
let done = item.is_none();
framed.force_send(Message::Chunk(item.into()))?;
if !done {
if !framed.is_write_buf_full() {
continue;
} else {
self.body = Some(Body::Streaming(stream));
break;
}
}
}
Async::NotReady => {
self.body = Some(Body::Streaming(stream));
break;
// send body
if self.res.is_none() && self.body.is_some() {
while body_ready && self.body.is_some() && !framed.is_write_buf_full() {
match self.body.as_mut().unwrap().poll_next()? {
Async::Ready(item) => {
// body is done
if item.is_none() {
let _ = self.body.take();
}
framed.force_send(Message::Chunk(item))?;
}
},
Body::Binary(mut bin) => {
framed.force_send(Message::Chunk(Some(bin.take())))?;
framed.force_send(Message::Chunk(None))?;
Async::NotReady => body_ready = false,
}
}
}
}
// flush
match self.framed.as_mut().unwrap().poll_complete()? {
Async::Ready(_) => if self.res.is_some() || self.body.is_some() {
return self.poll();
},
Async::NotReady => return Ok(Async::NotReady),
}
// flush write buffer
if !framed.is_write_buf_empty() {
match framed.poll_complete()? {
Async::Ready(_) => if body_ready {
continue;
} else {
return Ok(Async::NotReady);
},
Async::NotReady => return Ok(Async::NotReady),
}
}
Ok(Async::Ready(self.framed.take().unwrap()))
// send response
if let Some(res) = self.res.take() {
framed.force_send(res)?;
continue;
}
if self.body.is_some() {
if body_ready {
continue;
} else {
return Ok(Async::NotReady);
}
} else {
break;
}
}
return Ok(Async::Ready(self.framed.take().unwrap()));
}
}