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Code Issues Packages 1 Wiki Activity

Use 'reqwest' to implement HTTP client (#2822)

Browse source 
Closes #2720
This commit is contained in:
Bartek Iwańczuk 2019-04-25 19:29:21 +02:00 committed by Bert Belder
parent 840c4aa2b2
commit 723284fd20
No known key found for this signature in database
GPG key ID: 7A77887B2E2ED461
7 changed files with 175 additions and 282 deletions
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25
cli/file_fetcher.rs
View file

@ -5,6 +5,7 @@ use crate::deno_error::ErrorKind;
use crate::deno_error::GetErrorKind;
use crate::disk_cache::DiskCache;
use crate::http_util;
use crate::http_util::FetchOnceResult;
use crate::msg;
use crate::progress::Progress;
use crate::tokio_util;
@ -12,7 +13,6 @@ use deno::ErrBox;
use deno::ModuleSpecifier;
use futures::future::Either;
use futures::Future;
use http;
use serde_json;
use std;
use std::collections::HashMap;
@ -21,7 +21,6 @@ use std::path::Path;
use std::path::PathBuf;
use std::result::Result;
use std::str;
use std::str::FromStr;
use std::sync::Arc;
use std::sync::Mutex;
use url;
@ -305,8 +304,6 @@ impl SourceFileFetcher {
no_remote_fetch: bool,
redirect_limit: i64,
) -> Box<SourceFileFuture> {
use crate::http_util::FetchOnceResult;
if redirect_limit < 0 {
return Box::new(futures::future::err(too_many_redirects()));
}
@ -342,20 +339,14 @@ impl SourceFileFetcher {
}
let download_job = self.progress.add("Download", &module_url.to_string());
let module_uri = url_into_uri(&module_url);
let dir = self.clone();
let module_url = module_url.clone();
// Single pass fetch, either yields code or yields redirect.
let f =
http_util::fetch_string_once(module_uri).and_then(move |r| match r {
FetchOnceResult::Redirect(uri) => {
let f = http_util::fetch_string_once(&module_url).and_then(move |r| {
match r {
FetchOnceResult::Redirect(new_module_url) => {
// If redirects, update module_name and filename for next looped call.
let new_module_url = Url::parse(&uri.to_string())
.expect("http::uri::Uri should be parseable as Url");
dir
.save_source_code_headers(
&module_url,
@ -409,7 +400,8 @@ impl SourceFileFetcher {
Either::B(futures::future::ok(source_file))
}
});
}
});
Box::new(f)
}
@ -539,11 +531,6 @@ fn filter_shebang(bytes: Vec<u8>) -> Vec<u8> {
}
}
fn url_into_uri(url: &url::Url) -> http::uri::Uri {
http::uri::Uri::from_str(&url.to_string())
.expect("url::Url should be parseable as http::uri::Uri")
}
#[derive(Debug, Default)]
/// Header metadata associated with a particular "symbolic" source code file.
/// (the associated source code file might not be cached, while remaining

39
cli/http_body.rs
View file

@ -1,27 +1,27 @@
// Copyright 2018-2019 the Deno authors. All rights reserved. MIT license.
use futures::stream::Stream;
use futures::Async;
use futures::Poll;
use hyper::body::Payload;
use hyper::Body;
use hyper::Chunk;
use reqwest::r#async::Chunk;
use reqwest::r#async::Decoder;
use std::cmp::min;
use std::io;
use std::io::Read;
use tokio::io::AsyncRead;
/// Wraps `hyper::Body` so that it can be exposed as an `AsyncRead` and integrated
/// Wraps `reqwest::Decoder` so that it can be exposed as an `AsyncRead` and integrated
/// into resources more easily.
pub struct HttpBody {
body: Body,
decoder: Decoder,
chunk: Option<Chunk>,
pos: usize,
}
impl HttpBody {
pub fn from(body: Body) -> Self {
pub fn from(body: Decoder) -> Self {
Self {
body,
decoder: body,
chunk: None,
pos: 0,
}
@ -59,7 +59,7 @@ impl AsyncRead for HttpBody {
assert_eq!(self.pos, 0);
}
let p = self.body.poll_data();
let p = self.decoder.poll();
match p {
Err(e) => Err(
// TODO Need to map hyper::Error into std::io::Error.
@ -87,26 +87,3 @@ impl AsyncRead for HttpBody {
}
}
}
#[test]
fn test_body_async_read() {
use std::str::from_utf8;
let body = Body::from("hello world");
let mut body = HttpBody::from(body);
let buf = &mut [0, 0, 0, 0, 0];
let r = body.poll_read(buf);
assert!(r.is_ok());
assert_eq!(r.unwrap(), Async::Ready(5));
assert_eq!(from_utf8(buf).unwrap(), "hello");
let r = body.poll_read(buf);
assert!(r.is_ok());
assert_eq!(r.unwrap(), Async::Ready(5));
assert_eq!(from_utf8(buf).unwrap(), " worl");
let r = body.poll_read(buf);
assert!(r.is_ok());
assert_eq!(r.unwrap(), Async::Ready(1));
assert_eq!(from_utf8(&buf[0..1]).unwrap(), "d");
}

301
cli/http_util.rs
View file

@ -2,76 +2,56 @@
use crate::deno_error;
use crate::deno_error::DenoError;
use deno::ErrBox;
#[cfg(test)]
use futures::future::{loop_fn, Loop};
use futures::{future, Future, Stream};
use hyper;
use hyper::client::{Client, HttpConnector};
use hyper::header::CONTENT_TYPE;
use hyper::Uri;
use hyper_rustls;
use futures::{future, Future};
use reqwest;
use reqwest::header::CONTENT_TYPE;
use reqwest::header::LOCATION;
use reqwest::r#async::Client;
use reqwest::RedirectPolicy;
use url::Url;
type Connector = hyper_rustls::HttpsConnector<HttpConnector>;
lazy_static! {
static ref CONNECTOR: Connector = {
let num_dns_threads = 4;
Connector::new(num_dns_threads)
};
}
pub fn get_client() -> Client<Connector, hyper::Body> {
// TODO use Hyper's connection pool.
let c = CONNECTOR.clone();
Client::builder().build(c)
/// Create new instance of async reqwest::Client. This client supports
/// proxies and doesn't follow redirects.
pub fn get_client() -> Client {
Client::builder()
.redirect(RedirectPolicy::none())
.use_sys_proxy()
.build()
.unwrap()
}
/// Construct the next uri based on base uri and location header fragment
/// See <https://tools.ietf.org/html/rfc3986#section-4.2>
fn resolve_uri_from_location(base_uri: &Uri, location: &str) -> Uri {
fn resolve_url_from_location(base_url: &Url, location: &str) -> Url {
if location.starts_with("http://") || location.starts_with("https://") {
// absolute uri
location
.parse::<Uri>()
.expect("provided redirect url should be a valid url")
Url::parse(location).expect("provided redirect url should be a valid url")
} else if location.starts_with("//") {
// "//" authority path-abempty
format!("{}:{}", base_uri.scheme_part().unwrap().as_str(), location)
.parse::<Uri>()
Url::parse(&format!("{}:{}", base_url.scheme(), location))
.expect("provided redirect url should be a valid url")
} else if location.starts_with('/') {
// path-absolute
let mut new_uri_parts = base_uri.clone().into_parts();
new_uri_parts.path_and_query = Some(location.parse().unwrap());
Uri::from_parts(new_uri_parts).unwrap()
base_url
.join(location)
.expect("provided redirect url should be a valid url")
} else {
// assuming path-noscheme | path-empty
let mut new_uri_parts = base_uri.clone().into_parts();
let base_uri_path_str = base_uri.path().to_owned();
let segs: Vec<&str> = base_uri_path_str.rsplitn(2, '/').collect();
new_uri_parts.path_and_query = Some(
format!("{}/{}", segs.last().unwrap_or(&""), location)
.parse()
.unwrap(),
);
Uri::from_parts(new_uri_parts).unwrap()
let base_url_path_str = base_url.path().to_owned();
// Pop last part or url (after last slash)
let segs: Vec<&str> = base_url_path_str.rsplitn(2, '/').collect();
let new_path = format!("{}/{}", segs.last().unwrap_or(&""), location);
base_url
.join(&new_path)
.expect("provided redirect url should be a valid url")
}
}
#[cfg(test)]
use crate::tokio_util;
#[cfg(test)]
/// Synchronously fetchs the given HTTP URL. Returns (content, media_type).
pub fn fetch_sync_string(
module_name: &str,
) -> Result<(String, String), ErrBox> {
tokio_util::block_on(fetch_string(module_name))
}
#[derive(Debug, PartialEq)]
pub enum FetchOnceResult {
// (code, maybe_content_type)
Code(String, Option<String>),
Redirect(http::uri::Uri),
Redirect(Url),
}
/// Asynchronously fetchs the given HTTP URL one pass only.
@ -80,51 +60,57 @@ pub enum FetchOnceResult {
/// If redirect occurs, does not follow and
/// yields Redirect(url).
pub fn fetch_string_once(
url: http::uri::Uri,
url: &Url,
) -> impl Future<Item = FetchOnceResult, Error = ErrBox> {
type FetchAttempt = (Option<String>, Option<String>, Option<FetchOnceResult>);
let url = url.clone();
let client = get_client();
client
.get(url.clone())
.send()
.map_err(ErrBox::from)
.and_then(
move |response| -> Box<
move |mut response| -> Box<
dyn Future<Item = FetchAttempt, Error = ErrBox> + Send,
> {
if response.status().is_redirection() {
let location_string = response
.headers()
.get("location")
let location_string = response.headers()
.get(LOCATION)
.expect("url redirection should provide 'location' header")
.to_str()
.unwrap()
.to_string();
debug!("Redirecting to {}...", &location_string);
let new_url = resolve_uri_from_location(&url, &location_string);
.unwrap();
debug!("Redirecting to {:?}...", &location_string);
let new_url = resolve_url_from_location(&url, location_string);
// Boxed trait object turns out to be the savior for 2+ types yielding same results.
return Box::new(future::ok(None).join3(
future::ok(None),
future::ok(Some(FetchOnceResult::Redirect(new_url))),
));
} else if response.status().is_client_error()
|| response.status().is_server_error()
{
}
if response.status().is_client_error() || response.status().is_server_error() {
return Box::new(future::err(DenoError::new(
deno_error::ErrorKind::Other,
format!("Import '{}' failed: {}", &url, response.status()),
).into()));
}
let content_type = response
.headers()
.get(CONTENT_TYPE)
.map(|content_type| content_type.to_str().unwrap().to_owned());
let body = response
.into_body()
.concat2()
.map(|body| String::from_utf8(body.to_vec()).ok())
.text()
.map_err(ErrBox::from);
Box::new(body.join3(future::ok(content_type), future::ok(None)))
},
Box::new(
Some(body).join3(future::ok(content_type), future::ok(None))
)
}
)
.and_then(move |(maybe_code, maybe_content_type, maybe_redirect)| {
if let Some(redirect) = maybe_redirect {
@ -140,131 +126,74 @@ pub fn fetch_string_once(
}
#[cfg(test)]
/// Asynchronously fetchs the given HTTP URL. Returns (content, media_type).
pub fn fetch_string(
module_name: &str,
) -> impl Future<Item = (String, String), Error = ErrBox> {
let url = module_name.parse::<Uri>().unwrap();
let client = get_client();
// TODO(kevinkassimo): consider set a max redirection counter
// to avoid bouncing between 2 or more urls
loop_fn((client, url), |(client, url)| {
client
.get(url.clone())
.map_err(ErrBox::from)
.and_then(move |response| {
if response.status().is_redirection() {
let location_string = response
.headers()
.get("location")
.expect("url redirection should provide 'location' header")
.to_str()
.unwrap()
.to_string();
debug!("Redirecting to {}...", &location_string);
let new_url = resolve_uri_from_location(&url, &location_string);
return Ok(Loop::Continue((client, new_url)));
}
if !response.status().is_success() {
return Err(
DenoError::new(
deno_error::ErrorKind::NotFound,
"module not found".to_string(),
)
.into(),
);
}
Ok(Loop::Break(response))
})
})
.and_then(|response| {
let content_type = response
.headers()
.get(CONTENT_TYPE)
.map(|content_type| content_type.to_str().unwrap().to_string());
let body = response
.into_body()
.concat2()
.map(|body| String::from_utf8(body.to_vec()).unwrap())
.map_err(ErrBox::from);
body.join(future::ok(content_type))
})
.and_then(|(body_string, maybe_content_type)| {
future::ok((body_string, maybe_content_type.unwrap()))
})
}
mod tests {
use super::*;
use crate::tokio_util;
#[test]
fn test_fetch_sync_string() {
// Relies on external http server. See tools/http_server.py
tokio_util::init(|| {
let (p, m) =
fetch_sync_string("http://127.0.0.1:4545/package.json").unwrap();
println!("package.json len {}", p.len());
assert!(p.len() > 1);
assert!(m == "application/json")
});
}
pub fn fetch_string_once_sync(url: &Url) -> Result<FetchOnceResult, ErrBox> {
tokio_util::block_on(fetch_string_once(url))
}
#[test]
fn test_fetch_string() {
// Relies on external http server. See tools/http_server.py
tokio_util::init(|| {
let (p, m) = fetch_string("http://127.0.0.1:4545/package.json")
.wait()
.unwrap();
println!("package.json len {}", p.len());
assert!(p.len() > 1);
assert!(m == "application/json")
});
}
#[test]
fn test_fetch_sync_string() {
// Relies on external http server. See tools/http_server.py
let url = Url::parse("http://127.0.0.1:4545/package.json").unwrap();
tokio_util::init(|| match fetch_string_once_sync(&url).unwrap() {
FetchOnceResult::Code(code, maybe_content_type) => {
assert!(!code.is_empty());
assert_eq!(maybe_content_type, Some("application/json".to_string()));
}
_ => unreachable!(),
});
}
#[test]
fn test_fetch_sync_string_with_redirect() {
// Relies on external http server. See tools/http_server.py
tokio_util::init(|| {
let (p, m) =
fetch_sync_string("http://127.0.0.1:4546/package.json").unwrap();
println!("package.json len {}", p.len());
assert!(p.len() > 1);
assert!(m == "application/json")
});
}
#[test]
fn test_fetch_string_once_with_redirect() {
// Relies on external http server. See tools/http_server.py
let url = Url::parse("http://127.0.0.1:4546/package.json").unwrap();
// Dns resolver substitutes `127.0.0.1` with `localhost`
let target_url = Url::parse("http://localhost:4545/package.json").unwrap();
tokio_util::init(|| {
let result = fetch_string_once_sync(&url).unwrap();
assert_eq!(result, FetchOnceResult::Redirect(target_url));
});
}
#[test]
fn test_resolve_uri_from_location_full_1() {
let url = "http://deno.land".parse::<Uri>().unwrap();
let new_uri = resolve_uri_from_location(&url, "http://golang.org");
assert_eq!(new_uri.host().unwrap(), "golang.org");
}
#[test]
fn test_resolve_url_from_location_full_1() {
let url = "http://deno.land".parse::<Url>().unwrap();
let new_uri = resolve_url_from_location(&url, "http://golang.org");
assert_eq!(new_uri.host_str().unwrap(), "golang.org");
}
#[test]
fn test_resolve_uri_from_location_full_2() {
let url = "https://deno.land".parse::<Uri>().unwrap();
let new_uri = resolve_uri_from_location(&url, "https://golang.org");
assert_eq!(new_uri.host().unwrap(), "golang.org");
}
#[test]
fn test_resolve_url_from_location_full_2() {
let url = "https://deno.land".parse::<Url>().unwrap();
let new_uri = resolve_url_from_location(&url, "https://golang.org");
assert_eq!(new_uri.host_str().unwrap(), "golang.org");
}
#[test]
fn test_resolve_uri_from_location_relative_1() {
let url = "http://deno.land/x".parse::<Uri>().unwrap();
let new_uri = resolve_uri_from_location(&url, "//rust-lang.org/en-US");
assert_eq!(new_uri.host().unwrap(), "rust-lang.org");
assert_eq!(new_uri.path(), "/en-US");
}
#[test]
fn test_resolve_url_from_location_relative_1() {
let url = "http://deno.land/x".parse::<Url>().unwrap();
let new_uri = resolve_url_from_location(&url, "//rust-lang.org/en-US");
assert_eq!(new_uri.host_str().unwrap(), "rust-lang.org");
assert_eq!(new_uri.path(), "/en-US");
}
#[test]
fn test_resolve_uri_from_location_relative_2() {
let url = "http://deno.land/x".parse::<Uri>().unwrap();
let new_uri = resolve_uri_from_location(&url, "/y");
assert_eq!(new_uri.host().unwrap(), "deno.land");
assert_eq!(new_uri.path(), "/y");
}
#[test]
fn test_resolve_url_from_location_relative_2() {
let url = "http://deno.land/x".parse::<Url>().unwrap();
let new_uri = resolve_url_from_location(&url, "/y");
assert_eq!(new_uri.host_str().unwrap(), "deno.land");
assert_eq!(new_uri.path(), "/y");
}
#[test]
fn test_resolve_uri_from_location_relative_3() {
let url = "http://deno.land/x".parse::<Uri>().unwrap();
let new_uri = resolve_uri_from_location(&url, "z");
assert_eq!(new_uri.host().unwrap(), "deno.land");
assert_eq!(new_uri.path(), "/z");
#[test]
fn test_resolve_url_from_location_relative_3() {
let url = "http://deno.land/x".parse::<Url>().unwrap();
let new_uri = resolve_url_from_location(&url, "z");
assert_eq!(new_uri.host_str().unwrap(), "deno.land");
assert_eq!(new_uri.path(), "/z");
}
}

74
cli/ops/fetch.rs
View file

@ -1,19 +1,16 @@
// Copyright 2018-2019 the Deno authors. All rights reserved. MIT license.
use super::dispatch_json::{Deserialize, JsonOp, Value};
use crate::http_util;
use crate::http_util::get_client;
use crate::resources;
use crate::state::ThreadSafeState;
use deno::*;
use http::header::HeaderName;
use http::uri::Uri;
use http::header::HeaderValue;
use http::Method;
use hyper;
use hyper::header::HeaderValue;
use hyper::rt::Future;
use hyper::Request;
use std;
use std::convert::From;
use std::str::FromStr;
#[derive(Deserialize)]
struct FetchArgs {
@ -30,53 +27,46 @@ pub fn op_fetch(
let args: FetchArgs = serde_json::from_value(args)?;
let url = args.url;
let body = match data {
None => hyper::Body::empty(),
Some(buf) => hyper::Body::from(Vec::from(&*buf)),
let client = get_client();
let method = match args.method {
Some(method_str) => Method::from_bytes(method_str.as_bytes())?,
None => Method::GET,
};
let mut req = Request::new(body);
let uri = Uri::from_str(&url).map_err(ErrBox::from)?;
*req.uri_mut() = uri;
if let Some(method) = args.method {
let method = Method::from_str(&method).unwrap();
*req.method_mut() = method;
}
let headers = req.headers_mut();
for header_pair in args.headers {
let name = HeaderName::from_bytes(header_pair.0.as_bytes()).unwrap();
let v = HeaderValue::from_str(&header_pair.1).unwrap();
headers.insert(name, v);
}
let url_ = url::Url::parse(&url).map_err(ErrBox::from)?;
state.check_net_url(&url_)?;
let client = http_util::get_client();
let mut request = client.request(method, url_);
if let Some(buf) = data {
request = request.body(Vec::from(&*buf));
}
for (key, value) in args.headers {
let name = HeaderName::from_bytes(key.as_bytes()).unwrap();
let v = HeaderValue::from_str(&value).unwrap();
request = request.header(name, v);
}
debug!("Before fetch {}", url);
let future = client
.request(req)
.map_err(ErrBox::from)
.and_then(move |res| {
let status = res.status().as_u16();
let mut res_headers = Vec::new();
for (key, val) in res.headers().iter() {
res_headers.push((key.to_string(), val.to_str().unwrap().to_owned()));
}
let body = res.into_body();
let body_resource = resources::add_hyper_body(body);
let future = request.send().map_err(ErrBox::from).and_then(move |res| {
let status = res.status().as_u16();
let mut res_headers = Vec::new();
for (key, val) in res.headers().iter() {
res_headers.push((key.to_string(), val.to_str().unwrap().to_owned()));
}
let json_res = json!({
"bodyRid": body_resource.rid,
"status": status,
"headers": res_headers
});
let body = res.into_body();
let body_resource = resources::add_reqwest_body(body);
futures::future::ok(json_res)
let json_res = json!({
"bodyRid": body_resource.rid,
"status": status,
"headers": res_headers
});
futures::future::ok(json_res)
});
Ok(JsonOp::Async(Box::new(future)))
}

4
cli/resources.rs
View file

@ -22,7 +22,7 @@ use futures::Future;
use futures::Poll;
use futures::Sink;
use futures::Stream;
use hyper;
use reqwest::r#async::Decoder as ReqwestDecoder;
use std;
use std::collections::BTreeMap;
use std::io::{Error, Read, Seek, SeekFrom, Write};
@ -317,7 +317,7 @@ pub fn add_tcp_stream(stream: tokio::net::TcpStream) -> Resource {
Resource { rid }
}
pub fn add_hyper_body(body: hyper::Body) -> Resource {
pub fn add_reqwest_body(body: ReqwestDecoder) -> Resource {
let rid = new_rid();
let mut tg = RESOURCE_TABLE.lock().unwrap();
let body = HttpBody::from(body);

4
js/fetch_test.ts
View file

@ -69,8 +69,8 @@ testPerm({ net: true }, async function fetchEmptyInvalid(): Promise<void> {
} catch (err_) {
err = err_;
}
assertEquals(err.kind, Deno.ErrorKind.InvalidUri);
assertEquals(err.name, "InvalidUri");
assertEquals(err.kind, Deno.ErrorKind.RelativeUrlWithoutBase);
assertEquals(err.name, "RelativeUrlWithoutBase");
});
testPerm({ net: true }, async function fetchMultipartFormDataSuccess(): Promise<

10
website/manual.md
View file

@ -866,6 +866,16 @@ installation command to your repository:
$ deno install awesome_cli https://example.com/awesome/cli.ts
```
## Proxies
Deno supports proxies.
`HTTP_PROXY` and `HTTPS_PROXY` environmental variables are used to configure
them.
For Windows if environmental variables are not found Deno will fall back to
reading proxies from registry.
## Import maps
Deno supports [import maps](https://github.com/WICG/import-maps).