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feat(lib): implement compatibility with http crate
1 parent 92595e8 commit 0c7d375

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+535
-1
lines changed

‎.travis.yml

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@@ -8,6 +8,8 @@ matrix:
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env: FEATURES="--features nightly"
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- rust: beta
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- rust: stable
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- rust: stable
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env: FEATURES="--features compat"
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- rust: 1.15.0
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cache:

‎Cargo.toml

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@@ -23,6 +23,7 @@ base64 = "0.6"
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bytes = "0.4.4"
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futures = "0.1.14"
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futures-cpupool = "0.1"
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http = { version = "0.1", optional = true }
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httparse = "1.0"
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language-tags = "0.2"
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log = "0.3"
@@ -45,3 +46,4 @@ spmc = "0.2"
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default = []
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nightly = []
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raw_status = []
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compat = [ "http" ]

‎src/client/compat.rs

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@@ -0,0 +1,6 @@
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//! Wrappers to build compatibility with the `http` crate.
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pub use super::compat_impl::{
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CompatClient,
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CompatFutureResponse
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};

‎src/client/compat_impl.rs

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@@ -0,0 +1,53 @@
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use futures::{Future, Poll, Stream};
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use http_types;
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use tokio_service::Service;
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use client::{Connect, Client, FutureResponse};
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use error::Error;
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use http::Body;
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/// A Client to make outgoing HTTP requests.
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#[derive(Debug)]
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pub struct CompatClient<C, B = Body> {
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inner: Client<C, B>
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}
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pub fn client<C, B>(client: Client<C, B>) -> CompatClient<C, B> {
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CompatClient { inner: client }
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}
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impl<C, B> Service for CompatClient<C, B>
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where C: Connect,
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B: Stream<Error=Error> + 'static,
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B::Item: AsRef<[u8]>,
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{
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type Request = http_types::Request<B>;
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type Response = http_types::Response<Body>;
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type Error = Error;
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type Future = CompatFutureResponse;
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fn call(&self, req: Self::Request) -> Self::Future {
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future(self.inner.call(req.into()))
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}
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}
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/// A `Future` that will resolve to an `http::Response`.
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#[must_use = "futures do nothing unless polled"]
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#[derive(Debug)]
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pub struct CompatFutureResponse {
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inner: FutureResponse
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}
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pub fn future(fut: FutureResponse) -> CompatFutureResponse {
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CompatFutureResponse { inner: fut }
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}
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impl Future for CompatFutureResponse {
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type Item = http_types::Response<Body>;
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type Error = Error;
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fn poll(&mut self) -> Poll<Self::Item, Error> {
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self.inner.poll()
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.map(|a| a.map(|r| r.into()))
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}
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}

‎src/client/mod.rs

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@@ -9,6 +9,8 @@ use std::time::Duration;
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use futures::{future, Poll, Async, Future, Stream};
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use futures::unsync::oneshot;
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#[cfg(feature = "compat")]
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use http_types;
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use tokio_io::{AsyncRead, AsyncWrite};
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use tokio::reactor::Handle;
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use tokio_proto::BindClient;
@@ -33,6 +35,10 @@ pub use self::connect::{HttpConnector, Connect};
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mod connect;
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mod dns;
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mod pool;
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#[cfg(feature = "compat")]
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mod compat_impl;
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#[cfg(feature = "compat")]
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pub mod compat;
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/// A Client to make outgoing HTTP requests.
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// If the Connector is clone, then the Client can be clone easily.
@@ -108,6 +114,19 @@ where C: Connect,
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pub fn request(&self, req: Request<B>) -> FutureResponse {
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self.call(req)
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}
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/// Send an `http::Request` using this Client.
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#[inline]
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#[cfg(feature = "compat")]
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pub fn request_compat(&self, req: http_types::Request<B>) -> compat::CompatFutureResponse {
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self::compat_impl::future(self.call(req.into()))
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}
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/// Convert into a client accepting `http::Request`.
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#[cfg(feature = "compat")]
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pub fn into_compat(self) -> compat::CompatClient<C, B> {
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self::compat_impl::client(self)
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}
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}
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/// A `Future` that will resolve to an HTTP Response.

‎src/common/str.rs

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@@ -29,6 +29,11 @@ impl ByteStr {
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pub fn as_str(&self) -> &str {
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unsafe { str::from_utf8_unchecked(self.0.as_ref()) }
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}
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#[cfg(feature = "compat")]
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pub fn into_bytes(self) -> Bytes {
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self.0
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}
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}
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impl Deref for ByteStr {

‎src/header/mod.rs

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@@ -77,9 +77,14 @@
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//! }
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//! ```
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use std::borrow::{Cow, ToOwned};
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#[cfg(feature = "compat")]
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use std::convert::From;
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use std::iter::{FromIterator, IntoIterator};
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use std::{mem, fmt};
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#[cfg(feature = "compat")]
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use http_types;
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use unicase::Ascii;
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use self::internals::{Item, VecMap, Entry};
@@ -546,6 +551,54 @@ impl fmt::Debug for Headers {
546551
}
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}
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554+
#[cfg(feature = "compat")]
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impl From<http_types::HeaderMap> for Headers {
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fn from(mut header_map: http_types::HeaderMap) -> Headers {
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let mut headers = Headers::new();
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for (name, mut value_drain) in header_map.drain() {
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if let Some(first_value) = value_drain.next() {
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let mut raw: Raw = first_value.as_bytes().into();
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for value in value_drain {
562+
raw.push(value.as_bytes());
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}
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headers.append_raw(name.as_str().to_string(), raw);
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}
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}
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headers
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}
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}
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#[cfg(feature = "compat")]
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impl From<Headers> for http_types::HeaderMap {
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fn from(headers: Headers) -> http_types::HeaderMap {
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let mut header_map = http_types::HeaderMap::new();
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for header in headers.iter() {
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let entry = header_map.entry(header.name())
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.expect("attempted to convert invalid header name");
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let mut value_iter = header.raw().iter().map(|line| {
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http_types::header::HeaderValue::from_bytes(line)
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.expect("attempted to convert invalid header value")
581+
});
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match entry {
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http_types::header::Entry::Occupied(mut occupied) => {
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for value in value_iter {
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occupied.append(value);
586+
}
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},
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http_types::header::Entry::Vacant(vacant) => {
589+
if let Some(first_value) = value_iter.next() {
590+
let mut occupied = vacant.insert_entry(first_value);
591+
for value in value_iter {
592+
occupied.append(value);
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}
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}
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}
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}
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}
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header_map
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}
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}
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549602
/// An `Iterator` over the fields in a `Headers` map.
550603
#[allow(missing_debug_implementations)]
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pub struct HeadersItems<'a> {
@@ -940,6 +993,29 @@ mod tests {
940993
assert_ne!(headers1, headers2);
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}
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996+
#[test]
997+
#[cfg(feature = "compat")]
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fn test_compat() {
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use http_types;
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let mut orig_hyper_headers = Headers::new();
1002+
orig_hyper_headers.set(ContentLength(11));
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orig_hyper_headers.set(Host::new("foo.bar", None));
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orig_hyper_headers.append_raw("x-foo", b"bar".to_vec());
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orig_hyper_headers.append_raw("x-foo", b"quux".to_vec());
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let mut orig_http_headers = http_types::HeaderMap::new();
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orig_http_headers.insert(http_types::header::CONTENT_LENGTH, "11".parse().unwrap());
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orig_http_headers.insert(http_types::header::HOST, "foo.bar".parse().unwrap());
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orig_http_headers.append("x-foo", "bar".parse().unwrap());
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orig_http_headers.append("x-foo", "quux".parse().unwrap());
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let conv_hyper_headers: Headers = orig_http_headers.clone().into();
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let conv_http_headers: http_types::HeaderMap = orig_hyper_headers.clone().into();
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assert_eq!(orig_hyper_headers, conv_hyper_headers);
1016+
assert_eq!(orig_http_headers, conv_http_headers);
1017+
}
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#[cfg(feature = "nightly")]
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#[bench]
9451021
fn bench_headers_new(b: &mut Bencher) {

‎src/http/request.rs

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@@ -1,11 +1,16 @@
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use std::fmt;
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#[cfg(feature = "compat")]
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use std::mem::replace;
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use std::net::SocketAddr;
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6+
#[cfg(feature = "compat")]
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use http_types;
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use header::Headers;
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use http::{Body, MessageHead, RequestHead, RequestLine};
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use method::Method;
612
use uri::{self, Uri};
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use version::HttpVersion;
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use std::net::SocketAddr;
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1015
/// An HTTP Request
1116
pub struct Request<B = Body> {
@@ -132,6 +137,36 @@ impl<B> fmt::Debug for Request<B> {
132137
}
133138
}
134139

140+
#[cfg(feature = "compat")]
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impl From<Request> for http_types::Request<Body> {
142+
fn from(from_req: Request) -> http_types::Request<Body> {
143+
let (m, u, v, h, b) = from_req.deconstruct();
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145+
let to_req = http_types::Request::new(());
146+
let (mut to_parts, _) = to_req.into_parts();
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to_parts.method = m.into();
149+
to_parts.uri = u.into();
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to_parts.version = v.into();
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to_parts.headers = h.into();
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http_types::Request::from_parts(to_parts, b)
154+
}
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}
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157+
#[cfg(feature = "compat")]
158+
impl<B> From<http_types::Request<B>> for Request<B> {
159+
fn from(from_req: http_types::Request<B>) -> Request<B> {
160+
let (from_parts, body) = from_req.into_parts();
161+
162+
let mut to_req = Request::new(from_parts.method.into(), from_parts.uri.into());
163+
to_req.set_version(from_parts.version.into());
164+
replace(to_req.headers_mut(), from_parts.headers.into());
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to_req.set_body(body);
166+
to_req
167+
}
168+
}
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135170
/// Constructs a request using a received ResponseHead and optional body
136171
pub fn from_wire<B>(addr: Option<SocketAddr>, incoming: RequestHead, body: B) -> Request<B> {
137172
let MessageHead { version, subject: RequestLine(method, uri), headers } = incoming;

‎src/http/response.rs

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@@ -1,4 +1,9 @@
11
use std::fmt;
2+
#[cfg(feature = "compat")]
3+
use std::mem::replace;
4+
5+
#[cfg(feature = "compat")]
6+
use http_types;
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38
use header::{Header, Headers};
49
use http::{MessageHead, ResponseHead, Body};
@@ -142,6 +147,30 @@ impl fmt::Debug for Response {
142147
}
143148
}
144149

150+
#[cfg(feature = "compat")]
151+
impl<B> From<http_types::Response<B>> for Response<B> {
152+
fn from(from_res: http_types::Response<B>) -> Response<B> {
153+
let (from_parts, body) = from_res.into_parts();
154+
let mut to_res = Response::new();
155+
to_res.version = from_parts.version.into();
156+
to_res.set_status(from_parts.status.into());
157+
replace(to_res.headers_mut(), from_parts.headers.into());
158+
to_res.with_body(body)
159+
}
160+
}
161+
162+
#[cfg(feature = "compat")]
163+
impl From<Response> for http_types::Response<Body> {
164+
fn from(mut from_res: Response) -> http_types::Response<Body> {
165+
let (mut to_parts, ()) = http_types::Response::new(()).into_parts();
166+
to_parts.version = from_res.version().into();
167+
to_parts.status = from_res.status().into();
168+
let from_headers = replace(from_res.headers_mut(), Headers::new());
169+
to_parts.headers = from_headers.into();
170+
http_types::Response::from_parts(to_parts, from_res.body())
171+
}
172+
}
173+
145174
/// Constructs a response using a received ResponseHead and optional body
146175
#[inline]
147176
#[cfg(not(feature = "raw_status"))]

‎src/lib.rs

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@@ -21,6 +21,8 @@ extern crate base64;
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extern crate bytes;
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#[macro_use] extern crate futures;
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extern crate futures_cpupool;
24+
#[cfg(feature = "compat")]
25+
extern crate http as http_types;
2426
extern crate httparse;
2527
extern crate language_tags;
2628
#[macro_use] extern crate log;

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