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Added FrozenClientRequest for easier retrying HTTP calls (#1064)

Browse Source 
* Initial commit

* Added extra_headers

* Added freeze() method to ClientRequest which produces a 'read-only' copy of a request suitable for retrying the send operation

* Additional methods for FrozenClientRequest

* Fix

* Increased crates versions

* Fixed a unit test. Added one more unit test.

* Added RequestHeaderWrapper

* Small fixes

* Renamed RequestHeadWrapper->RequestHeadType

* Updated CHANGES.md files

* Small fix

* Small changes

* Removed *_extra methods from Connection trait

* Added FrozenSendBuilder

* Added FrozenSendBuilder

* Minor fix

* Replaced impl Future with concrete Future implementation

* Small renaming

* Renamed Send->SendBody
This commit is contained in:
Dmitry Pypin
2019-09-09 21:29:32 -07:00
committed by Nikolay Kim
parent 5e8f1c338c
commit 8873e9b39e
14 changed files with 828 additions and 184 deletions
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26
actix-http/src/client/connection.rs
View File

@ -8,7 +8,7 @@ use h2::client::SendRequest;
use crate::body::MessageBody;
use crate::h1::ClientCodec;
use crate::message::{RequestHead, ResponseHead};
use crate::message::{RequestHeadType, ResponseHead};
use crate::payload::Payload;
use super::error::SendRequestError;
@ -27,9 +27,9 @@ pub trait Connection {
fn protocol(&self) -> Protocol;
/// Send request and body
fn send_request<B: MessageBody + 'static>(
fn send_request<B: MessageBody + 'static, H: Into<RequestHeadType>>(
self,
head: RequestHead,
head: H,
body: B,
) -> Self::Future;
@ -39,7 +39,7 @@ pub trait Connection {
>;
/// Send request, returns Response and Framed
fn open_tunnel(self, head: RequestHead) -> Self::TunnelFuture;
fn open_tunnel<H: Into<RequestHeadType>>(self, head: H) -> Self::TunnelFuture;
}
pub(crate) trait ConnectionLifetime: AsyncRead + AsyncWrite + 'static {
@ -105,22 +105,22 @@ where
}
}
fn send_request<B: MessageBody + 'static>(
fn send_request<B: MessageBody + 'static, H: Into<RequestHeadType>>(
mut self,
head: RequestHead,
head: H,
body: B,
) -> Self::Future {
match self.io.take().unwrap() {
ConnectionType::H1(io) => Box::new(h1proto::send_request(
io,
head,
head.into(),
body,
self.created,
self.pool,
)),
ConnectionType::H2(io) => Box::new(h2proto::send_request(
io,
head,
head.into(),
body,
self.created,
self.pool,
@ -139,10 +139,10 @@ where
>;
/// Send request, returns Response and Framed
fn open_tunnel(mut self, head: RequestHead) -> Self::TunnelFuture {
fn open_tunnel<H: Into<RequestHeadType>>(mut self, head: H) -> Self::TunnelFuture {
match self.io.take().unwrap() {
ConnectionType::H1(io) => {
Either::A(Box::new(h1proto::open_tunnel(io, head)))
Either::A(Box::new(h1proto::open_tunnel(io, head.into())))
}
ConnectionType::H2(io) => {
if let Some(mut pool) = self.pool.take() {
@ -180,9 +180,9 @@ where
}
}
fn send_request<RB: MessageBody + 'static>(
fn send_request<RB: MessageBody + 'static, H: Into<RequestHeadType>>(
self,
head: RequestHead,
head: H,
body: RB,
) -> Self::Future {
match self {
@ -199,7 +199,7 @@ where
>;
/// Send request, returns Response and Framed
fn open_tunnel(self, head: RequestHead) -> Self::TunnelFuture {
fn open_tunnel<H: Into<RequestHeadType>>(self, head: H) -> Self::TunnelFuture {
match self {
EitherConnection::A(con) => Box::new(
con.open_tunnel(head)

20
actix-http/src/client/error.rs
View File

@ -128,3 +128,23 @@ impl ResponseError for SendRequestError {
.into()
}
}
/// A set of errors that can occur during freezing a request
#[derive(Debug, Display, From)]
pub enum FreezeRequestError {
/// Invalid URL
#[display(fmt = "Invalid URL: {}", _0)]
Url(InvalidUrl),
/// Http error
#[display(fmt = "{}", _0)]
Http(HttpError),
}
impl From<FreezeRequestError> for SendRequestError {
fn from(e: FreezeRequestError) -> Self {
match e {
FreezeRequestError::Url(e) => e.into(),
FreezeRequestError::Http(e) => e.into(),
}
}
}

29
actix-http/src/client/h1proto.rs
View File

@ -9,8 +9,9 @@ use futures::{Async, Future, Poll, Sink, Stream};
use crate::error::PayloadError;
use crate::h1;
use crate::http::header::{IntoHeaderValue, HOST};
use crate::message::{RequestHead, ResponseHead};
use crate::message::{RequestHeadType, ResponseHead};
use crate::payload::{Payload, PayloadStream};
use crate::header::HeaderMap;
use super::connection::{ConnectionLifetime, ConnectionType, IoConnection};
use super::error::{ConnectError, SendRequestError};
@ -19,7 +20,7 @@ use crate::body::{BodySize, MessageBody};
pub(crate) fn send_request<T, B>(
io: T,
mut head: RequestHead,
mut head: RequestHeadType,
body: B,
created: time::Instant,
pool: Option<Acquired<T>>,
@ -29,21 +30,29 @@ where
B: MessageBody,
{
// set request host header
if !head.headers.contains_key(HOST) {
if let Some(host) = head.uri.host() {
if !head.as_ref().headers.contains_key(HOST) && !head.extra_headers().iter().any(|h| h.contains_key(HOST)) {
if let Some(host) = head.as_ref().uri.host() {
let mut wrt = BytesMut::with_capacity(host.len() + 5).writer();
let _ = match head.uri.port_u16() {
let _ = match head.as_ref().uri.port_u16() {
None | Some(80) | Some(443) => write!(wrt, "{}", host),
Some(port) => write!(wrt, "{}:{}", host, port),
};
match wrt.get_mut().take().freeze().try_into() {
Ok(value) => {
head.headers.insert(HOST, value);
match head {
RequestHeadType::Owned(ref mut head) => {
head.headers.insert(HOST, value)
},
RequestHeadType::Rc(_, ref mut extra_headers) => {
let headers = extra_headers.get_or_insert(HeaderMap::new());
headers.insert(HOST, value)
},
}
}
Err(e) => {
log::error!("Can not set HOST header {}", e);
log::error!("Can not set HOST header {}", e)
}
}
}
@ -57,7 +66,7 @@ where
let len = body.size();
// create Framed and send reqest
// create Framed and send request
Framed::new(io, h1::ClientCodec::default())
.send((head, len).into())
.from_err()
@ -95,12 +104,12 @@ where
pub(crate) fn open_tunnel<T>(
io: T,
head: RequestHead,
head: RequestHeadType,
) -> impl Future<Item = (ResponseHead, Framed<T, h1::ClientCodec>), Error = SendRequestError>
where
T: AsyncRead + AsyncWrite + 'static,
{
// create Framed and send reqest
// create Framed and send request
Framed::new(io, h1::ClientCodec::default())
.send((head, BodySize::None).into())
.from_err()

26
actix-http/src/client/h2proto.rs
View File

@ -9,8 +9,9 @@ use http::header::{HeaderValue, CONNECTION, CONTENT_LENGTH, TRANSFER_ENCODING};
use http::{request::Request, HttpTryFrom, Method, Version};
use crate::body::{BodySize, MessageBody};
use crate::message::{RequestHead, ResponseHead};
use crate::message::{RequestHeadType, ResponseHead};
use crate::payload::Payload;
use crate::header::HeaderMap;
use super::connection::{ConnectionType, IoConnection};
use super::error::SendRequestError;
@ -18,7 +19,7 @@ use super::pool::Acquired;
pub(crate) fn send_request<T, B>(
io: SendRequest<Bytes>,
head: RequestHead,
head: RequestHeadType,
body: B,
created: time::Instant,
pool: Option<Acquired<T>>,
@ -28,7 +29,7 @@ where
B: MessageBody,
{
trace!("Sending client request: {:?} {:?}", head, body.size());
let head_req = head.method == Method::HEAD;
let head_req = head.as_ref().method == Method::HEAD;
let length = body.size();
let eof = match length {
BodySize::None | BodySize::Empty | BodySize::Sized(0) => true,
@ -39,8 +40,8 @@ where
.map_err(SendRequestError::from)
.and_then(move |mut io| {
let mut req = Request::new(());
*req.uri_mut() = head.uri;
*req.method_mut() = head.method;
*req.uri_mut() = head.as_ref().uri.clone();
*req.method_mut() = head.as_ref().method.clone();
*req.version_mut() = Version::HTTP_2;
let mut skip_len = true;
@ -66,8 +67,21 @@ where
),
};
// Extracting extra headers from RequestHeadType. HeaderMap::new() does not allocate.
let (head, extra_headers) = match head {
RequestHeadType::Owned(head) => (RequestHeadType::Owned(head), HeaderMap::new()),
RequestHeadType::Rc(head, extra_headers) => (RequestHeadType::Rc(head, None), extra_headers.unwrap_or(HeaderMap::new())),
};
// merging headers from head and extra headers.
let headers = head.as_ref().headers.iter()
.filter(|(name, _)| {
!extra_headers.contains_key(*name)
})
.chain(extra_headers.iter());
// copy headers
for (key, value) in head.headers.iter() {
for (key, value) in headers {
match *key {
CONNECTION | TRANSFER_ENCODING => continue, // http2 specific
CONTENT_LENGTH if skip_len => continue,

2
actix-http/src/client/mod.rs
View File

@ -10,7 +10,7 @@ mod pool;
pub use self::connection::Connection;
pub use self::connector::Connector;
pub use self::error::{ConnectError, InvalidUrl, SendRequestError};
pub use self::error::{ConnectError, InvalidUrl, SendRequestError, FreezeRequestError};
pub use self::pool::Protocol;
#[derive(Clone)]