Files
reqwest-impersonate/src/async_impl/request.rs
2018-02-01 14:44:39 +01:00

536 lines
15 KiB
Rust

use std::fmt;
use serde::Serialize;
use serde_json;
use serde_urlencoded;
use super::body::{self, Body};
use super::client::{Client, Pending, pending_err};
use header::{ContentType, Headers};
use {Method, Url};
/// A request which can be executed with `Client::execute()`.
pub struct Request {
method: Method,
url: Url,
headers: Headers,
body: Option<Body>,
}
/// A builder to construct the properties of a `Request`.
pub struct RequestBuilder {
client: Client,
request: Option<Request>,
err: Option<::Error>,
}
impl Request {
/// Constructs a new request.
#[inline]
pub fn new(method: Method, url: Url) -> Self {
Request {
method,
url,
headers: Headers::new(),
body: None,
}
}
/// Get the method.
#[inline]
pub fn method(&self) -> &Method {
&self.method
}
/// Get a mutable reference to the method.
#[inline]
pub fn method_mut(&mut self) -> &mut Method {
&mut self.method
}
/// Get the url.
#[inline]
pub fn url(&self) -> &Url {
&self.url
}
/// Get a mutable reference to the url.
#[inline]
pub fn url_mut(&mut self) -> &mut Url {
&mut self.url
}
/// Get the headers.
#[inline]
pub fn headers(&self) -> &Headers {
&self.headers
}
/// Get a mutable reference to the headers.
#[inline]
pub fn headers_mut(&mut self) -> &mut Headers {
&mut self.headers
}
/// Get the body.
#[inline]
pub fn body(&self) -> Option<&Body> {
self.body.as_ref()
}
/// Get a mutable reference to the body.
#[inline]
pub fn body_mut(&mut self) -> &mut Option<Body> {
&mut self.body
}
}
impl RequestBuilder {
/// Add a `Header` to this Request.
pub fn header<H>(&mut self, header: H) -> &mut RequestBuilder
where
H: ::header::Header,
{
if let Some(req) = request_mut(&mut self.request, &self.err) {
req.headers_mut().set(header);
}
self
}
/// Add a set of Headers to the existing ones on this Request.
///
/// The headers will be merged in to any already set.
pub fn headers(&mut self, headers: ::header::Headers) -> &mut RequestBuilder {
if let Some(req) = request_mut(&mut self.request, &self.err) {
req.headers_mut().extend(headers.iter());
}
self
}
/// Enable HTTP basic authentication.
pub fn basic_auth<U, P>(&mut self, username: U, password: Option<P>) -> &mut RequestBuilder
where
U: Into<String>,
P: Into<String>,
{
self.header(::header::Authorization(::header::Basic {
username: username.into(),
password: password.map(|p| p.into()),
}))
}
/// Set the request body.
pub fn body<T: Into<Body>>(&mut self, body: T) -> &mut RequestBuilder {
if let Some(req) = request_mut(&mut self.request, &self.err) {
*req.body_mut() = Some(body.into());
}
self
}
/// Modify the query string of the URL.
///
/// Modifies the URL of this request, adding the parameters provided.
/// This method appends and does not overwrite. This means that it can
/// be called multiple times and that existing query parameters are not
/// overwritten if the same key is used. The key will simply show up
/// twice in the query string.
/// Calling `.query([("foo", "a"), ("foo", "b")])` gives `"foo=a&boo=b"`.
///
/// # Note
/// This method does not support serializing a single key-value
/// pair. Instead of using `.query(("key", "val"))`, use a sequence, such
/// as `.query(&[("key", "val")])`. It's also possible to serialize structs
/// and maps into a key-value pair.
///
/// # Errors
/// This method will fail if the object you provide cannot be serialized
/// into a query string.
pub fn query<T: Serialize + ?Sized>(&mut self, query: &T) -> &mut RequestBuilder {
if let Some(req) = request_mut(&mut self.request, &self.err) {
let url = req.url_mut();
let mut pairs = url.query_pairs_mut();
let serializer = serde_urlencoded::Serializer::new(&mut pairs);
if let Err(err) = query.serialize(serializer) {
self.err = Some(::error::from(err));
}
}
self
}
/// Send a form body.
pub fn form<T: Serialize + ?Sized>(&mut self, form: &T) -> &mut RequestBuilder {
if let Some(req) = request_mut(&mut self.request, &self.err) {
match serde_urlencoded::to_string(form) {
Ok(body) => {
req.headers_mut().set(ContentType::form_url_encoded());
*req.body_mut() = Some(body.into());
},
Err(err) => self.err = Some(::error::from(err)),
}
}
self
}
/// Send a JSON body.
///
/// # Errors
///
/// Serialization can fail if `T`'s implementation of `Serialize` decides to
/// fail, or if `T` contains a map with non-string keys.
pub fn json<T: Serialize + ?Sized>(&mut self, json: &T) -> &mut RequestBuilder {
if let Some(req) = request_mut(&mut self.request, &self.err) {
match serde_json::to_vec(json) {
Ok(body) => {
req.headers_mut().set(ContentType::json());
*req.body_mut() = Some(body.into());
},
Err(err) => self.err = Some(::error::from(err)),
}
}
self
}
/// Build a `Request`, which can be inspected, modified and executed with
/// `Client::execute()`.
///
/// # Panics
///
/// This method consumes builder internal state. It panics on an attempt to
/// reuse already consumed builder.
pub fn build(&mut self) -> ::Result<Request> {
if let Some(err) = self.err.take() {
Err(err)
} else {
Ok(self.request
.take()
.expect("RequestBuilder cannot be reused after builder a Request"))
}
}
/// Constructs the Request and sends it the target URL, returning a Response.
///
/// # Errors
///
/// This method fails if there was an error while sending request,
/// redirect loop was detected or redirect limit was exhausted.
pub fn send(&mut self) -> Pending {
match self.build() {
Ok(req) => self.client.execute(req),
Err(err) => pending_err(err),
}
}
}
fn request_mut<'a>(req: &'a mut Option<Request>, err: &Option<::Error>) -> Option<&'a mut Request> {
if err.is_some() {
None
} else {
req.as_mut()
}
}
impl fmt::Debug for Request {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
fmt_request_fields(&mut f.debug_struct("Request"), self)
.finish()
}
}
impl fmt::Debug for RequestBuilder {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
if let Some(ref req) = self.request {
fmt_request_fields(&mut f.debug_struct("RequestBuilder"), req)
.finish()
} else {
f.debug_tuple("RequestBuilder")
.field(&"Consumed")
.finish()
}
}
}
fn fmt_request_fields<'a, 'b>(f: &'a mut fmt::DebugStruct<'a, 'b>, req: &Request) -> &'a mut fmt::DebugStruct<'a, 'b> {
f.field("method", &req.method)
.field("url", &req.url)
.field("headers", &req.headers)
}
// pub(crate)
#[inline]
pub fn builder(client: Client, req: ::Result<Request>) -> RequestBuilder {
match req {
Ok(req) => RequestBuilder {
client: client,
request: Some(req),
err: None,
},
Err(err) => RequestBuilder {
client: client,
request: None,
err: Some(err)
},
}
}
#[inline]
pub fn pieces(req: Request) -> (Method, Url, Headers, Option<Body>) {
(req.method, req.url, req.headers, req.body)
}
#[cfg(test)]
mod tests {
use super::Client;
use std::collections::BTreeMap;
use tokio_core::reactor::Core;
#[test]
fn add_query_append() {
let mut core = Core::new().unwrap();
let client = Client::new(&core.handle());
let some_url = "https://google.com/";
let mut r = client.get(some_url);
r.query(&[("foo", "bar")]);
r.query(&[("qux", 3)]);
let req = r.build().expect("request is valid");
assert_eq!(req.url().query(), Some("foo=bar&qux=3"));
}
#[test]
fn add_query_append_same() {
let mut core = Core::new().unwrap();
let client = Client::new(&core.handle());
let some_url = "https://google.com/";
let mut r = client.get(some_url);
r.query(&[("foo", "a"), ("foo", "b")]);
let req = r.build().expect("request is valid");
assert_eq!(req.url().query(), Some("foo=a&foo=b"));
}
#[test]
fn add_query_struct() {
#[derive(Serialize)]
struct Params {
foo: String,
qux: i32,
}
let mut core = Core::new().unwrap();
let client = Client::new(&core.handle());
let some_url = "https://google.com/";
let mut r = client.get(some_url);
let params = Params { foo: "bar".into(), qux: 3 };
r.query(&params);
let req = r.build().expect("request is valid");
assert_eq!(req.url().query(), Some("foo=bar&qux=3"));
}
#[test]
fn add_query_map() {
let mut params = BTreeMap::new();
params.insert("foo", "bar");
params.insert("qux", "three");
let mut core = Core::new().unwrap();
let client = Client::new(&core.handle());
let some_url = "https://google.com/";
let mut r = client.get(some_url);
r.query(&params);
let req = r.build().expect("request is valid");
assert_eq!(req.url().query(), Some("foo=bar&qux=three"));
}
/*
use {body, Method};
use super::Client;
use header::{Host, Headers, ContentType};
use std::collections::HashMap;
use serde_urlencoded;
use serde_json;
#[test]
fn basic_get_request() {
let client = Client::new().unwrap();
let some_url = "https://google.com/";
let r = client.get(some_url).unwrap().build();
assert_eq!(r.method, Method::Get);
assert_eq!(r.url.as_str(), some_url);
}
#[test]
fn basic_head_request() {
let client = Client::new().unwrap();
let some_url = "https://google.com/";
let r = client.head(some_url).unwrap().build();
assert_eq!(r.method, Method::Head);
assert_eq!(r.url.as_str(), some_url);
}
#[test]
fn basic_post_request() {
let client = Client::new().unwrap();
let some_url = "https://google.com/";
let r = client.post(some_url).unwrap().build();
assert_eq!(r.method, Method::Post);
assert_eq!(r.url.as_str(), some_url);
}
#[test]
fn basic_put_request() {
let client = Client::new().unwrap();
let some_url = "https://google.com/";
let r = client.put(some_url).unwrap().build();
assert_eq!(r.method, Method::Put);
assert_eq!(r.url.as_str(), some_url);
}
#[test]
fn basic_patch_request() {
let client = Client::new().unwrap();
let some_url = "https://google.com/";
let r = client.patch(some_url).unwrap().build();
assert_eq!(r.method, Method::Patch);
assert_eq!(r.url.as_str(), some_url);
}
#[test]
fn basic_delete_request() {
let client = Client::new().unwrap();
let some_url = "https://google.com/";
let r = client.delete(some_url).unwrap().build();
assert_eq!(r.method, Method::Delete);
assert_eq!(r.url.as_str(), some_url);
}
#[test]
fn add_header() {
let client = Client::new().unwrap();
let some_url = "https://google.com/";
let mut r = client.post(some_url).unwrap();
let header = Host {
hostname: "google.com".to_string(),
port: None,
};
// Add a copy of the header to the request builder
let r = r.header(header.clone()).build();
// then check it was actually added
assert_eq!(r.headers.get::<Host>(), Some(&header));
}
#[test]
fn add_headers() {
let client = Client::new().unwrap();
let some_url = "https://google.com/";
let mut r = client.post(some_url).unwrap();
let header = Host {
hostname: "google.com".to_string(),
port: None,
};
let mut headers = Headers::new();
headers.set(header);
// Add a copy of the headers to the request builder
let r = r.headers(headers.clone()).build();
// then make sure they were added correctly
assert_eq!(r.headers, headers);
}
#[test]
fn add_body() {
let client = Client::new().unwrap();
let some_url = "https://google.com/";
let mut r = client.post(some_url).unwrap();
let body = "Some interesting content";
let r = r.body(body).build();
let buf = body::read_to_string(r.body.unwrap()).unwrap();
assert_eq!(buf, body);
}
#[test]
fn add_form() {
let client = Client::new().unwrap();
let some_url = "https://google.com/";
let mut r = client.post(some_url).unwrap();
let mut form_data = HashMap::new();
form_data.insert("foo", "bar");
let r = r.form(&form_data).unwrap().build();
// Make sure the content type was set
assert_eq!(r.headers.get::<ContentType>(),
Some(&ContentType::form_url_encoded()));
let buf = body::read_to_string(r.body.unwrap()).unwrap();
let body_should_be = serde_urlencoded::to_string(&form_data).unwrap();
assert_eq!(buf, body_should_be);
}
#[test]
fn add_json() {
let client = Client::new().unwrap();
let some_url = "https://google.com/";
let mut r = client.post(some_url).unwrap();
let mut json_data = HashMap::new();
json_data.insert("foo", "bar");
let r = r.json(&json_data).unwrap().build();
// Make sure the content type was set
assert_eq!(r.headers.get::<ContentType>(), Some(&ContentType::json()));
let buf = body::read_to_string(r.body.unwrap()).unwrap();
let body_should_be = serde_json::to_string(&json_data).unwrap();
assert_eq!(buf, body_should_be);
}
#[test]
fn add_json_fail() {
use serde::{Serialize, Serializer};
use serde::ser::Error;
struct MyStruct;
impl Serialize for MyStruct {
fn serialize<S>(&self, _serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer
{
Err(S::Error::custom("nope"))
}
}
let client = Client::new().unwrap();
let some_url = "https://google.com/";
let mut r = client.post(some_url).unwrap();
let json_data = MyStruct{};
assert!(r.json(&json_data).unwrap_err().is_serialization());
}
*/
}