Change RequestBuilder methods to own a builder
This means that `build` cannot possibly panic anymore due to being called multiple times. This is a breaking change as it breaks the behaviour of builder methods called without assigning to a new variable or chaining. It's rather easy to fix those usages, as they won't compile anymore and can be fixed by assigning a result. Additionally, this change reduces the size of `RequestBuilder`, although this likely isn't all that meaningful, as usually there is no reason to store builders in structures.
This commit is contained in:
Konrad Borowski
committed by
Sean McArthur
Sean McArthur
parent
d8e47babf6
commit
279725ee5e
@@ -23,8 +23,7 @@ pub struct Request {
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/// A builder to construct the properties of a `Request`.
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pub struct RequestBuilder {
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client: Client,
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request: Option<Request>,
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err: Option<::Error>,
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request: ::Result<Request>,
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}
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impl Request {
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@@ -90,29 +89,33 @@ impl Request {
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impl RequestBuilder {
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/// Add a `Header` to this Request.
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pub fn header<K, V>(&mut self, key: K, value: V) -> &mut RequestBuilder
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pub fn header<K, V>(mut self, key: K, value: V) -> RequestBuilder
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where
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HeaderName: HttpTryFrom<K>,
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HeaderValue: HttpTryFrom<V>,
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{
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if let Some(req) = request_mut(&mut self.request, &self.err) {
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let mut error = None;
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if let Ok(ref mut req) = self.request {
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match <HeaderName as HttpTryFrom<K>>::try_from(key) {
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Ok(key) => {
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match <HeaderValue as HttpTryFrom<V>>::try_from(value) {
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Ok(value) => { req.headers_mut().append(key, value); }
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Err(e) => self.err = Some(::error::from(e.into())),
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Err(e) => error = Some(::error::from(e.into())),
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}
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},
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Err(e) => self.err = Some(::error::from(e.into())),
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Err(e) => error = Some(::error::from(e.into())),
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};
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}
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if let Some(err) = error {
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self.request = Err(err);
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}
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self
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}
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/// Add a set of Headers to the existing ones on this Request.
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///
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/// The headers will be merged in to any already set.
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pub fn headers(&mut self, headers: ::header::HeaderMap) -> &mut RequestBuilder {
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if let Some(req) = request_mut(&mut self.request, &self.err) {
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pub fn headers(mut self, headers: ::header::HeaderMap) -> RequestBuilder {
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if let Ok(ref mut req) = self.request {
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for (key, value) in headers.iter() {
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req.headers_mut().insert(key, value.clone());
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}
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@@ -121,7 +124,7 @@ impl RequestBuilder {
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}
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/// Enable HTTP basic authentication.
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pub fn basic_auth<U, P>(&mut self, username: U, password: Option<P>) -> &mut RequestBuilder
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pub fn basic_auth<U, P>(mut self, username: U, password: Option<P>) -> RequestBuilder
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where
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U: fmt::Display,
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P: fmt::Display,
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@@ -131,12 +134,12 @@ impl RequestBuilder {
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None => format!("{}:", username)
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};
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let header_value = format!("basic {}", encode(&auth));
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self.header(::header::AUTHORIZATION, HeaderValue::from_str(header_value.as_str()).expect(""))
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self.header(::header::AUTHORIZATION, &*header_value)
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}
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/// Set the request body.
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pub fn body<T: Into<Body>>(&mut self, body: T) -> &mut RequestBuilder {
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if let Some(req) = request_mut(&mut self.request, &self.err) {
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pub fn body<T: Into<Body>>(mut self, body: T) -> RequestBuilder {
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if let Ok(ref mut req) = self.request {
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*req.body_mut() = Some(body.into());
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}
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self
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@@ -160,30 +163,38 @@ impl RequestBuilder {
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/// # Errors
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/// This method will fail if the object you provide cannot be serialized
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/// into a query string.
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pub fn query<T: Serialize + ?Sized>(&mut self, query: &T) -> &mut RequestBuilder {
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if let Some(req) = request_mut(&mut self.request, &self.err) {
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pub fn query<T: Serialize + ?Sized>(mut self, query: &T) -> RequestBuilder {
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let mut error = None;
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if let Ok(ref mut req) = self.request {
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let url = req.url_mut();
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let mut pairs = url.query_pairs_mut();
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let serializer = serde_urlencoded::Serializer::new(&mut pairs);
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if let Err(err) = query.serialize(serializer) {
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self.err = Some(::error::from(err));
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error = Some(::error::from(err));
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}
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}
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if let Some(err) = error {
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self.request = Err(err);
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}
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self
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}
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/// Send a form body.
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pub fn form<T: Serialize + ?Sized>(&mut self, form: &T) -> &mut RequestBuilder {
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if let Some(req) = request_mut(&mut self.request, &self.err) {
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pub fn form<T: Serialize + ?Sized>(mut self, form: &T) -> RequestBuilder {
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let mut error = None;
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if let Ok(ref mut req) = self.request {
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match serde_urlencoded::to_string(form) {
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Ok(body) => {
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req.headers_mut().insert(CONTENT_TYPE, HeaderValue::from_str(mime::APPLICATION_WWW_FORM_URLENCODED.as_ref()).expect(""));
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*req.body_mut() = Some(body.into());
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},
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Err(err) => self.err = Some(::error::from(err)),
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Err(err) => error = Some(::error::from(err)),
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}
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}
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if let Some(err) = error {
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self.request = Err(err);
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}
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self
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}
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@@ -193,34 +204,27 @@ impl RequestBuilder {
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///
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/// Serialization can fail if `T`'s implementation of `Serialize` decides to
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/// fail, or if `T` contains a map with non-string keys.
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pub fn json<T: Serialize + ?Sized>(&mut self, json: &T) -> &mut RequestBuilder {
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if let Some(req) = request_mut(&mut self.request, &self.err) {
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pub fn json<T: Serialize + ?Sized>(mut self, json: &T) -> RequestBuilder {
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let mut error = None;
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if let Ok(ref mut req) = self.request {
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match serde_json::to_vec(json) {
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Ok(body) => {
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req.headers_mut().insert(CONTENT_TYPE, HeaderValue::from_str(mime::APPLICATION_JSON.as_ref()).expect(""));
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*req.body_mut() = Some(body.into());
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},
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Err(err) => self.err = Some(::error::from(err)),
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Err(err) => error = Some(::error::from(err)),
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}
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}
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if let Some(err) = error {
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self.request = Err(err);
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}
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self
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}
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/// Build a `Request`, which can be inspected, modified and executed with
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/// `Client::execute()`.
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///
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/// # Panics
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///
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/// This method consumes builder internal state. It panics on an attempt to
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/// reuse already consumed builder.
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pub fn build(&mut self) -> ::Result<Request> {
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if let Some(err) = self.err.take() {
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Err(err)
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} else {
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Ok(self.request
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.take()
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.expect("RequestBuilder cannot be reused after builder a Request"))
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}
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pub fn build(self) -> ::Result<Request> {
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self.request
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}
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/// Constructs the Request and sends it the target URL, returning a Response.
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@@ -229,22 +233,14 @@ impl RequestBuilder {
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///
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/// This method fails if there was an error while sending request,
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/// redirect loop was detected or redirect limit was exhausted.
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pub fn send(&mut self) -> Pending {
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match self.build() {
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pub fn send(self) -> Pending {
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match self.request {
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Ok(req) => self.client.execute(req),
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Err(err) => pending_err(err),
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}
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}
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}
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fn request_mut<'a>(req: &'a mut Option<Request>, err: &Option<::Error>) -> Option<&'a mut Request> {
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if err.is_some() {
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None
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} else {
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req.as_mut()
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}
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}
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impl fmt::Debug for Request {
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fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
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fmt_request_fields(&mut f.debug_struct("Request"), self)
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@@ -254,13 +250,17 @@ impl fmt::Debug for Request {
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impl fmt::Debug for RequestBuilder {
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fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
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if let Some(ref req) = self.request {
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fmt_request_fields(&mut f.debug_struct("RequestBuilder"), req)
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.finish()
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} else {
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f.debug_tuple("RequestBuilder")
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.field(&"Consumed")
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.finish()
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let mut builder = f.debug_struct("RequestBuilder");
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match self.request {
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Ok(ref req) => {
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fmt_request_fields(&mut builder, req)
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.finish()
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},
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Err(ref err) => {
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builder
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.field("error", err)
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.finish()
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}
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}
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}
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}
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@@ -274,18 +274,10 @@ fn fmt_request_fields<'a, 'b>(f: &'a mut fmt::DebugStruct<'a, 'b>, req: &Request
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// pub(crate)
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#[inline]
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pub fn builder(client: Client, req: ::Result<Request>) -> RequestBuilder {
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match req {
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Ok(req) => RequestBuilder {
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client: client,
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request: Some(req),
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err: None,
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},
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Err(err) => RequestBuilder {
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client: client,
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request: None,
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err: Some(err)
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},
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pub fn builder(client: Client, request: ::Result<Request>) -> RequestBuilder {
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RequestBuilder {
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client,
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request,
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}
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}
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139
src/request.rs
139
src/request.rs
@@ -17,10 +17,10 @@ pub struct Request {
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}
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/// A builder to construct the properties of a `Request`.
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#[derive(Debug)]
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pub struct RequestBuilder {
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client: Client,
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request: Option<Request>,
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err: Option<::Error>,
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request: ::Result<Request>,
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}
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impl Request {
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@@ -96,22 +96,26 @@ impl RequestBuilder {
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/// # Ok(())
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/// # }
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/// ```
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pub fn header<K, V>(&mut self, key: K, value: V) -> &mut RequestBuilder
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pub fn header<K, V>(mut self, key: K, value: V) -> RequestBuilder
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where
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HeaderName: HttpTryFrom<K>,
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HeaderValue: HttpTryFrom<V>,
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{
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if let Some(req) = request_mut(&mut self.request, &self.err) {
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let mut error = None;
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if let Ok(ref mut req) = self.request {
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match <HeaderName as HttpTryFrom<K>>::try_from(key) {
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Ok(key) => {
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match <HeaderValue as HttpTryFrom<V>>::try_from(value) {
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Ok(value) => { req.headers_mut().append(key, value); }
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Err(e) => self.err = Some(::error::from(e.into())),
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Err(e) => error = Some(::error::from(e.into())),
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}
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},
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Err(e) => self.err = Some(::error::from(e.into())),
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Err(e) => error = Some(::error::from(e.into())),
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};
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}
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if let Some(err) = error {
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self.request = Err(err);
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}
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self
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}
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@@ -140,8 +144,8 @@ impl RequestBuilder {
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/// # Ok(())
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/// # }
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/// ```
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pub fn headers(&mut self, headers: ::header::HeaderMap) -> &mut RequestBuilder {
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if let Some(req) = request_mut(&mut self.request, &self.err) {
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pub fn headers(mut self, headers: ::header::HeaderMap) -> RequestBuilder {
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if let Ok(ref mut req) = self.request {
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for (key, value) in headers.iter() {
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req.headers_mut().insert(key, value.clone());
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}
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@@ -160,7 +164,7 @@ impl RequestBuilder {
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/// # Ok(())
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/// # }
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/// ```
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pub fn basic_auth<U, P>(&mut self, username: U, password: Option<P>) -> &mut RequestBuilder
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pub fn basic_auth<U, P>(self, username: U, password: Option<P>) -> RequestBuilder
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where
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U: fmt::Display,
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P: fmt::Display,
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@@ -217,8 +221,8 @@ impl RequestBuilder {
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/// # Ok(())
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/// # }
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/// ```
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pub fn body<T: Into<Body>>(&mut self, body: T) -> &mut RequestBuilder {
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if let Some(req) = request_mut(&mut self.request, &self.err) {
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pub fn body<T: Into<Body>>(mut self, body: T) -> RequestBuilder {
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if let Ok(ref mut req) = self.request {
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*req.body_mut() = Some(body.into());
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}
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self
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@@ -254,16 +258,20 @@ impl RequestBuilder {
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/// # Errors
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/// This method will fail if the object you provide cannot be serialized
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/// into a query string.
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pub fn query<T: Serialize + ?Sized>(&mut self, query: &T) -> &mut RequestBuilder {
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if let Some(req) = request_mut(&mut self.request, &self.err) {
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pub fn query<T: Serialize + ?Sized>(mut self, query: &T) -> RequestBuilder {
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let mut error = None;
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if let Ok(ref mut req) = self.request {
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let url = req.url_mut();
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let mut pairs = url.query_pairs_mut();
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let serializer = serde_urlencoded::Serializer::new(&mut pairs);
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if let Err(err) = query.serialize(serializer) {
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self.err = Some(::error::from(err));
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error = Some(::error::from(err));
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}
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}
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if let Some(err) = error {
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self.request = Err(err);
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}
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self
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}
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@@ -293,16 +301,20 @@ impl RequestBuilder {
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///
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/// This method fails if the passed value cannot be serialized into
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/// url encoded format
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pub fn form<T: Serialize + ?Sized>(&mut self, form: &T) -> &mut RequestBuilder {
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if let Some(req) = request_mut(&mut self.request, &self.err) {
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pub fn form<T: Serialize + ?Sized>(mut self, form: &T) -> RequestBuilder {
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let mut error = None;
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if let Ok(ref mut req) = self.request {
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match serde_urlencoded::to_string(form) {
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Ok(body) => {
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req.headers_mut().insert(CONTENT_TYPE, HeaderValue::from_str(::mime::APPLICATION_WWW_FORM_URLENCODED.as_ref()).expect(""));
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*req.body_mut() = Some(body.into());
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},
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Err(err) => self.err = Some(::error::from(err)),
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Err(err) => error = Some(::error::from(err)),
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}
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}
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if let Some(err) = error {
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self.request = Err(err);
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}
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self
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}
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@@ -331,16 +343,20 @@ impl RequestBuilder {
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///
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/// Serialization can fail if `T`'s implementation of `Serialize` decides to
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/// fail, or if `T` contains a map with non-string keys.
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pub fn json<T: Serialize + ?Sized>(&mut self, json: &T) -> &mut RequestBuilder {
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if let Some(req) = request_mut(&mut self.request, &self.err) {
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pub fn json<T: Serialize + ?Sized>(mut self, json: &T) -> RequestBuilder {
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let mut error = None;
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if let Ok(ref mut req) = self.request {
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match serde_json::to_vec(json) {
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Ok(body) => {
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req.headers_mut().insert(CONTENT_TYPE, HeaderValue::from_str(::mime::APPLICATION_JSON.as_ref()).expect(""));
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*req.body_mut() = Some(body.into());
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},
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Err(err) => self.err = Some(::error::from(err)),
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Err(err) => error = Some(::error::from(err)),
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}
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}
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if let Some(err) = error {
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self.request = Err(err);
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}
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self
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}
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@@ -363,8 +379,8 @@ impl RequestBuilder {
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/// ```
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///
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/// See [`multipart`](multipart/) for more examples.
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pub fn multipart(&mut self, mut multipart: ::multipart::Form) -> &mut RequestBuilder {
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if let Some(req) = request_mut(&mut self.request, &self.err) {
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pub fn multipart(mut self, mut multipart: ::multipart::Form) -> RequestBuilder {
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if let Ok(ref mut req) = self.request {
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req.headers_mut().insert(
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::header::CONTENT_TYPE,
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HeaderValue::from_str(
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@@ -384,19 +400,8 @@ impl RequestBuilder {
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/// Build a `Request`, which can be inspected, modified and executed with
|
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/// `Client::execute()`.
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///
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/// # Panics
|
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///
|
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/// This method consumes builder internal state. It panics on an attempt to
|
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/// reuse already consumed builder.
|
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pub fn build(&mut self) -> ::Result<Request> {
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if let Some(err) = self.err.take() {
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Err(err)
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} else {
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Ok(self.request
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.take()
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.expect("RequestBuilder cannot be reused after builder a Request"))
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}
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pub fn build(self) -> ::Result<Request> {
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self.request
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}
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|
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/// Constructs the Request and sends it the target URL, returning a Response.
|
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@@ -405,22 +410,12 @@ impl RequestBuilder {
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///
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/// This method fails if there was an error while sending request,
|
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/// redirect loop was detected or redirect limit was exhausted.
|
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pub fn send(&mut self) -> ::Result<::Response> {
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let request = self.build()?;
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self.client.execute(request)
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pub fn send(self) -> ::Result<::Response> {
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self.client.execute(self.request?)
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}
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}
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fn request_mut<'a>(req: &'a mut Option<Request>, err: &Option<::Error>) -> Option<&'a mut Request> {
|
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if err.is_some() {
|
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None
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} else {
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req.as_mut()
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}
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}
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impl fmt::Debug for Request {
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||||
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
|
||||
fmt_request_fields(&mut f.debug_struct("Request"), self)
|
||||
@@ -428,19 +423,6 @@ impl fmt::Debug for Request {
|
||||
}
|
||||
}
|
||||
|
||||
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())
|
||||
@@ -450,19 +432,8 @@ fn fmt_request_fields<'a, 'b>(f: &'a mut fmt::DebugStruct<'a, 'b>, req: &Request
|
||||
// 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)
|
||||
},
|
||||
}
|
||||
pub fn builder(client: Client, request: ::Result<Request>) -> RequestBuilder {
|
||||
RequestBuilder { client, request }
|
||||
}
|
||||
|
||||
#[inline]
|
||||
@@ -553,7 +524,7 @@ mod tests {
|
||||
fn add_header() {
|
||||
let client = Client::new();
|
||||
let some_url = "https://google.com/";
|
||||
let mut r = client.post(some_url);
|
||||
let r = client.post(some_url);
|
||||
|
||||
let header = HeaderValue::from_static("google.com");
|
||||
|
||||
@@ -568,7 +539,7 @@ mod tests {
|
||||
fn add_headers() {
|
||||
let client = Client::new();
|
||||
let some_url = "https://google.com/";
|
||||
let mut r = client.post(some_url);
|
||||
let r = client.post(some_url);
|
||||
|
||||
let header = HeaderValue::from_static("google.com");
|
||||
|
||||
@@ -586,7 +557,7 @@ mod tests {
|
||||
fn add_body() {
|
||||
let client = Client::new();
|
||||
let some_url = "https://google.com/";
|
||||
let mut r = client.post(some_url);
|
||||
let r = client.post(some_url);
|
||||
|
||||
let body = "Some interesting content";
|
||||
|
||||
@@ -603,8 +574,8 @@ mod tests {
|
||||
let some_url = "https://google.com/";
|
||||
let mut r = client.get(some_url);
|
||||
|
||||
r.query(&[("foo", "bar")]);
|
||||
r.query(&[("qux", 3)]);
|
||||
r = r.query(&[("foo", "bar")]);
|
||||
r = r.query(&[("qux", 3)]);
|
||||
|
||||
let req = r.build().expect("request is valid");
|
||||
assert_eq!(req.url().query(), Some("foo=bar&qux=3"));
|
||||
@@ -616,7 +587,7 @@ mod tests {
|
||||
let some_url = "https://google.com/";
|
||||
let mut r = client.get(some_url);
|
||||
|
||||
r.query(&[("foo", "a"), ("foo", "b")]);
|
||||
r = r.query(&[("foo", "a"), ("foo", "b")]);
|
||||
|
||||
let req = r.build().expect("request is valid");
|
||||
assert_eq!(req.url().query(), Some("foo=a&foo=b"));
|
||||
@@ -636,7 +607,7 @@ mod tests {
|
||||
|
||||
let params = Params { foo: "bar".into(), qux: 3 };
|
||||
|
||||
r.query(¶ms);
|
||||
r = r.query(¶ms);
|
||||
|
||||
let req = r.build().expect("request is valid");
|
||||
assert_eq!(req.url().query(), Some("foo=bar&qux=3"));
|
||||
@@ -652,7 +623,7 @@ mod tests {
|
||||
let some_url = "https://google.com/";
|
||||
let mut r = client.get(some_url);
|
||||
|
||||
r.query(¶ms);
|
||||
r = r.query(¶ms);
|
||||
|
||||
let req = r.build().expect("request is valid");
|
||||
assert_eq!(req.url().query(), Some("foo=bar&qux=three"));
|
||||
@@ -662,7 +633,7 @@ mod tests {
|
||||
fn add_form() {
|
||||
let client = Client::new();
|
||||
let some_url = "https://google.com/";
|
||||
let mut r = client.post(some_url);
|
||||
let r = client.post(some_url);
|
||||
|
||||
let mut form_data = HashMap::new();
|
||||
form_data.insert("foo", "bar");
|
||||
@@ -682,7 +653,7 @@ mod tests {
|
||||
fn add_json() {
|
||||
let client = Client::new();
|
||||
let some_url = "https://google.com/";
|
||||
let mut r = client.post(some_url);
|
||||
let r = client.post(some_url);
|
||||
|
||||
let mut json_data = HashMap::new();
|
||||
json_data.insert("foo", "bar");
|
||||
@@ -713,7 +684,7 @@ mod tests {
|
||||
|
||||
let client = Client::new();
|
||||
let some_url = "https://google.com/";
|
||||
let mut r = client.post(some_url);
|
||||
let r = client.post(some_url);
|
||||
let json_data = MyStruct;
|
||||
assert!(r.json(&json_data).build().unwrap_err().is_serialization());
|
||||
}
|
||||
|
||||
Reference in New Issue
Block a user