mirror of
https://github.com/fafhrd91/actix-web
synced 2024-11-28 10:02:38 +01:00
570 lines
19 KiB
Rust
570 lines
19 KiB
Rust
use std::marker::PhantomData;
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use actix::Actor;
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use futures::Future;
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use serde_json;
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use serde::Serialize;
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use regex::Regex;
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use http::{header, StatusCode, Error as HttpError};
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use body::Body;
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use error::Error;
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use context::{HttpContext, IoContext};
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use httprequest::HttpRequest;
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use httpresponse::HttpResponse;
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/// Trait defines object that could be regestered as route handler
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#[allow(unused_variables)]
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pub trait Handler<S>: 'static {
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/// The type of value that handler will return.
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type Result: FromRequest;
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/// Handle request
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fn handle(&self, req: HttpRequest<S>) -> Self::Result;
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}
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pub trait FromRequest {
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/// The associated item which can be returned.
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type Item: Into<Reply>;
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/// The associated error which can be returned.
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type Error: Into<Error>;
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fn from_request(self, req: HttpRequest) -> Result<Self::Item, Self::Error>;
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}
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/// Handler<S> for Fn()
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impl<F, R, S> Handler<S> for F
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where F: Fn(HttpRequest<S>) -> R + 'static,
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R: FromRequest + 'static
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{
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type Result = R;
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fn handle(&self, req: HttpRequest<S>) -> R {
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(self)(req)
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}
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}
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/// Represents response process.
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pub struct Reply(ReplyItem);
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pub(crate) enum ReplyItem {
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Message(Box<HttpResponse>),
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Actor(Box<IoContext>),
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Future(Box<Future<Item=HttpResponse, Error=Error>>),
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}
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impl Reply {
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/// Create actor response
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#[inline]
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pub fn actor<A, S>(ctx: HttpContext<A, S>) -> Reply
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where A: Actor<Context=HttpContext<A, S>>, S: 'static
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{
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Reply(ReplyItem::Actor(Box::new(ctx)))
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}
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/// Create async response
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#[inline]
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pub fn async<F>(fut: F) -> Reply
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where F: Future<Item=HttpResponse, Error=Error> + 'static
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{
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Reply(ReplyItem::Future(Box::new(fut)))
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}
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/// Send response
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#[inline]
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pub fn response<R: Into<HttpResponse>>(response: R) -> Reply {
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Reply(ReplyItem::Message(Box::new(response.into())))
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}
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#[inline]
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pub(crate) fn into(self) -> ReplyItem {
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self.0
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}
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#[cfg(test)]
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pub(crate) fn as_response(&self) -> Option<&HttpResponse> {
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match self.0 {
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ReplyItem::Message(ref resp) => Some(resp),
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_ => None,
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}
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}
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}
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impl FromRequest for Reply {
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type Item = Reply;
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type Error = Error;
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fn from_request(self, _: HttpRequest) -> Result<Reply, Error> {
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Ok(self)
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}
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}
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impl FromRequest for HttpResponse {
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type Item = Reply;
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type Error = Error;
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fn from_request(self, _: HttpRequest) -> Result<Reply, Error> {
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Ok(Reply(ReplyItem::Message(Box::new(self))))
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}
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}
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impl From<HttpResponse> for Reply {
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fn from(resp: HttpResponse) -> Reply {
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Reply(ReplyItem::Message(Box::new(resp)))
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}
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}
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impl<T: FromRequest, E: Into<Error>> FromRequest for Result<T, E>
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{
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type Item = <T as FromRequest>::Item;
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type Error = Error;
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fn from_request(self, req: HttpRequest) -> Result<Self::Item, Self::Error> {
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match self {
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Ok(val) => match val.from_request(req) {
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Ok(val) => Ok(val),
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Err(err) => Err(err.into()),
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},
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Err(err) => Err(err.into()),
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}
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}
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}
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impl<E: Into<Error>> From<Result<Reply, E>> for Reply {
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fn from(res: Result<Reply, E>) -> Self {
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match res {
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Ok(val) => val,
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Err(err) => Reply(ReplyItem::Message(Box::new(err.into().into()))),
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}
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}
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}
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impl<A: Actor<Context=HttpContext<A, S>>, S: 'static> FromRequest for HttpContext<A, S>
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{
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type Item = Reply;
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type Error = Error;
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fn from_request(self, _: HttpRequest) -> Result<Reply, Error> {
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Ok(Reply(ReplyItem::Actor(Box::new(self))))
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}
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}
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impl<A: Actor<Context=HttpContext<A, S>>, S: 'static> From<HttpContext<A, S>> for Reply {
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fn from(ctx: HttpContext<A, S>) -> Reply {
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Reply(ReplyItem::Actor(Box::new(ctx)))
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}
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}
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impl FromRequest for Box<Future<Item=HttpResponse, Error=Error>>
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{
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type Item = Reply;
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type Error = Error;
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fn from_request(self, _: HttpRequest) -> Result<Reply, Error> {
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Ok(Reply(ReplyItem::Future(self)))
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}
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}
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/// Trait defines object that could be regestered as resource route
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pub(crate) trait RouteHandler<S>: 'static {
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fn handle(&self, req: HttpRequest<S>) -> Reply;
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}
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/// Route handler wrapper for Handler
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pub(crate)
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struct WrapHandler<S, H, R>
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where H: Handler<S, Result=R>,
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R: FromRequest,
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S: 'static,
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{
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h: H,
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s: PhantomData<S>,
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}
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impl<S, H, R> WrapHandler<S, H, R>
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where H: Handler<S, Result=R>,
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R: FromRequest,
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S: 'static,
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{
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pub fn new(h: H) -> Self {
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WrapHandler{h: h, s: PhantomData}
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}
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}
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impl<S, H, R> RouteHandler<S> for WrapHandler<S, H, R>
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where H: Handler<S, Result=R>,
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R: FromRequest + 'static,
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S: 'static,
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{
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fn handle(&self, req: HttpRequest<S>) -> Reply {
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let req2 = req.clone_without_state();
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match self.h.handle(req).from_request(req2) {
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Ok(reply) => reply.into(),
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Err(err) => Reply::response(err.into()),
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}
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}
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}
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/// Async route handler
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pub(crate)
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struct AsyncHandler<S, R, F>
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where F: Fn(HttpRequest<S>) -> R + 'static,
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R: Future<Item=HttpResponse, Error=Error> + 'static,
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S: 'static,
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{
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f: Box<F>,
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s: PhantomData<S>,
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}
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impl<S, R, F> AsyncHandler<S, R, F>
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where F: Fn(HttpRequest<S>) -> R + 'static,
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R: Future<Item=HttpResponse, Error=Error> + 'static,
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S: 'static,
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{
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pub fn new(f: F) -> Self {
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AsyncHandler{f: Box::new(f), s: PhantomData}
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}
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}
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impl<S, R, F> RouteHandler<S> for AsyncHandler<S, R, F>
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where F: Fn(HttpRequest<S>) -> R + 'static,
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R: Future<Item=HttpResponse, Error=Error> + 'static,
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S: 'static,
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{
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fn handle(&self, req: HttpRequest<S>) -> Reply {
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Reply::async((self.f)(req))
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}
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}
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/// Json response helper
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///
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/// The `Json` type allows you to respond with well-formed JSON data: simply return a value of
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/// type Json<T> where T is the type of a structure to serialize into *JSON*. The
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/// type `T` must implement the `Serialize` trait from *serde*.
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///
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/// ```rust
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/// # extern crate actix_web;
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/// # #[macro_use] extern crate serde_derive;
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/// # use actix_web::*;
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/// #
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/// #[derive(Serialize)]
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/// struct MyObj {
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/// name: String,
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/// }
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///
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/// fn index(req: HttpRequest) -> Result<Json<MyObj>> {
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/// Ok(Json(MyObj{name: req.match_info().query("name")?}))
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/// }
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/// # fn main() {}
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/// ```
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pub struct Json<T: Serialize> (pub T);
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impl<T: Serialize> FromRequest for Json<T> {
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type Item = HttpResponse;
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type Error = Error;
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fn from_request(self, _: HttpRequest) -> Result<HttpResponse, Error> {
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let body = serde_json::to_string(&self.0)?;
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Ok(HttpResponse::Ok()
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.content_type("application/json")
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.body(body)?)
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}
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}
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/// Path normalization helper
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///
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/// By normalizing it means:
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///
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/// - Add a trailing slash to the path.
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/// - Double slashes are replaced by one.
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///
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/// The handler returns as soon as it finds a path that resolves
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/// correctly. The order if all enable is 1) merge, 3) both merge and append
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/// and 3) append. If the path resolves with
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/// at least one of those conditions, it will redirect to the new path.
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///
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/// If *append* is *true* append slash when needed. If a resource is
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/// defined with trailing slash and the request comes without it, it will
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/// append it automatically.
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///
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/// If *merge* is *true*, merge multiple consecutive slashes in the path into one.
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///
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/// This handler designed to be use as a handler for application's *default resource*.
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///
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/// ```rust
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/// # extern crate actix_web;
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/// # #[macro_use] extern crate serde_derive;
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/// # use actix_web::*;
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/// #
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/// # fn index(req: HttpRequest) -> httpcodes::StaticResponse {
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/// # httpcodes::HTTPOk
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/// # }
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/// fn main() {
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/// let app = Application::new()
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/// .resource("/test/", |r| r.f(index))
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/// .default_resource(|r| r.h(NormalizePath::default()))
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/// .finish();
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/// }
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/// ```
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/// In this example `/test`, `/test///` will be redirected to `/test/` url.
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pub struct NormalizePath {
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append: bool,
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merge: bool,
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re_merge: Regex,
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redirect: StatusCode,
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not_found: StatusCode,
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}
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impl Default for NormalizePath {
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/// Create default `NormalizePath` instance, *append* is set to *true*,
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/// *merge* is set to *true* and *redirect* is set to `StatusCode::MOVED_PERMANENTLY`
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fn default() -> NormalizePath {
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NormalizePath {
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append: true,
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merge: true,
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re_merge: Regex::new("//+").unwrap(),
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redirect: StatusCode::MOVED_PERMANENTLY,
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not_found: StatusCode::NOT_FOUND,
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}
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}
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}
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impl NormalizePath {
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/// Create new `NoramlizePath` instance
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pub fn new(append: bool, merge: bool, redirect: StatusCode) -> NormalizePath {
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NormalizePath {
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append: append,
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merge: merge,
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re_merge: Regex::new("//+").unwrap(),
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redirect: redirect,
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not_found: StatusCode::NOT_FOUND,
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}
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}
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}
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impl<S> Handler<S> for NormalizePath {
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type Result = Result<HttpResponse, HttpError>;
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fn handle(&self, req: HttpRequest<S>) -> Self::Result {
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if let Some(router) = req.router() {
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let query = req.query_string();
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if self.merge {
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// merge slashes
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let p = self.re_merge.replace_all(req.path(), "/");
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if p.len() != req.path().len() {
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if router.has_route(p.as_ref()) {
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let p = if !query.is_empty() { p + "?" + query } else { p };
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return HttpResponse::build(self.redirect)
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.header(header::LOCATION, p.as_ref())
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.body(Body::Empty);
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}
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// merge slashes and append trailing slash
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if self.append && !p.ends_with('/') {
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let p = p.as_ref().to_owned() + "/";
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if router.has_route(&p) {
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let p = if !query.is_empty() { p + "?" + query } else { p };
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return HttpResponse::build(self.redirect)
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.header(header::LOCATION, p.as_str())
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.body(Body::Empty);
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}
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}
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}
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}
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// append trailing slash
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if self.append && !req.path().ends_with('/') {
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let p = req.path().to_owned() + "/";
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if router.has_route(&p) {
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let p = if !query.is_empty() { p + "?" + query } else { p };
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return HttpResponse::build(self.redirect)
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.header(header::LOCATION, p.as_str())
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.body(Body::Empty);
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}
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}
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}
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Ok(HttpResponse::new(self.not_found, Body::Empty))
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}
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}
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#[cfg(test)]
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mod tests {
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use super::*;
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use http::{header, Method};
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use application::Application;
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#[derive(Serialize)]
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struct MyObj {
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name: &'static str,
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}
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#[test]
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fn test_json() {
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let json = Json(MyObj{name: "test"});
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let resp = json.from_request(HttpRequest::default()).unwrap();
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assert_eq!(resp.headers().get(header::CONTENT_TYPE).unwrap(), "application/json");
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}
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fn index(_req: HttpRequest) -> HttpResponse {
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HttpResponse::new(StatusCode::OK, Body::Empty)
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}
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#[test]
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fn test_normalize_path_trailing_slashes() {
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let app = Application::new()
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.resource("/resource1", |r| r.method(Method::GET).f(index))
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.resource("/resource2/", |r| r.method(Method::GET).f(index))
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.default_resource(|r| r.h(NormalizePath::default()))
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.finish();
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// trailing slashes
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let params = vec![("/resource1", "", StatusCode::OK),
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("/resource1/", "", StatusCode::NOT_FOUND),
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("/resource2", "/resource2/", StatusCode::MOVED_PERMANENTLY),
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("/resource2/", "", StatusCode::OK),
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("/resource1?p1=1&p2=2", "", StatusCode::OK),
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("/resource1/?p1=1&p2=2", "", StatusCode::NOT_FOUND),
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("/resource2?p1=1&p2=2", "/resource2/?p1=1&p2=2",
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StatusCode::MOVED_PERMANENTLY),
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("/resource2/?p1=1&p2=2", "", StatusCode::OK)
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];
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for (path, target, code) in params {
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let req = app.prepare_request(HttpRequest::from_path(path));
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let resp = app.run(req);
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let r = resp.as_response().unwrap();
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assert_eq!(r.status(), code);
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if !target.is_empty() {
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assert_eq!(
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target,
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r.headers().get(header::LOCATION).unwrap().to_str().unwrap());
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}
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}
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}
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#[test]
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fn test_normalize_path_trailing_slashes_disabled() {
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let app = Application::new()
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.resource("/resource1", |r| r.method(Method::GET).f(index))
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.resource("/resource2/", |r| r.method(Method::GET).f(index))
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.default_resource(|r| r.h(
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NormalizePath::new(false, true, StatusCode::MOVED_PERMANENTLY)))
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.finish();
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// trailing slashes
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let params = vec![("/resource1", StatusCode::OK),
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("/resource1/", StatusCode::NOT_FOUND),
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("/resource2", StatusCode::NOT_FOUND),
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("/resource2/", StatusCode::OK),
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("/resource1?p1=1&p2=2", StatusCode::OK),
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("/resource1/?p1=1&p2=2", StatusCode::NOT_FOUND),
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("/resource2?p1=1&p2=2", StatusCode::NOT_FOUND),
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("/resource2/?p1=1&p2=2", StatusCode::OK)
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];
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for (path, code) in params {
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let req = app.prepare_request(HttpRequest::from_path(path));
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let resp = app.run(req);
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let r = resp.as_response().unwrap();
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assert_eq!(r.status(), code);
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}
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}
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#[test]
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fn test_normalize_path_merge_slashes() {
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let app = Application::new()
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.resource("/resource1", |r| r.method(Method::GET).f(index))
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.resource("/resource1/a/b", |r| r.method(Method::GET).f(index))
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.default_resource(|r| r.h(NormalizePath::default()))
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.finish();
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// trailing slashes
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let params = vec![
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("/resource1/a/b", "", StatusCode::OK),
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("//resource1//a//b", "/resource1/a/b", StatusCode::MOVED_PERMANENTLY),
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("//resource1//a//b/", "", StatusCode::NOT_FOUND),
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("///resource1//a//b", "/resource1/a/b", StatusCode::MOVED_PERMANENTLY),
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("/////resource1/a///b", "/resource1/a/b", StatusCode::MOVED_PERMANENTLY),
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("/////resource1/a//b/", "", StatusCode::NOT_FOUND),
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("/resource1/a/b?p=1", "", StatusCode::OK),
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("//resource1//a//b?p=1", "/resource1/a/b?p=1", StatusCode::MOVED_PERMANENTLY),
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("//resource1//a//b/?p=1", "", StatusCode::NOT_FOUND),
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("///resource1//a//b?p=1", "/resource1/a/b?p=1", StatusCode::MOVED_PERMANENTLY),
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("/////resource1/a///b?p=1", "/resource1/a/b?p=1", StatusCode::MOVED_PERMANENTLY),
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("/////resource1/a//b/?p=1", "", StatusCode::NOT_FOUND),
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];
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for (path, target, code) in params {
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let req = app.prepare_request(HttpRequest::from_path(path));
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let resp = app.run(req);
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let r = resp.as_response().unwrap();
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assert_eq!(r.status(), code);
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if !target.is_empty() {
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assert_eq!(
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target,
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r.headers().get(header::LOCATION).unwrap().to_str().unwrap());
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}
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}
|
|
}
|
|
|
|
#[test]
|
|
fn test_normalize_path_merge_and_append_slashes() {
|
|
let app = Application::new()
|
|
.resource("/resource1", |r| r.method(Method::GET).f(index))
|
|
.resource("/resource2/", |r| r.method(Method::GET).f(index))
|
|
.resource("/resource1/a/b", |r| r.method(Method::GET).f(index))
|
|
.resource("/resource2/a/b/", |r| r.method(Method::GET).f(index))
|
|
.default_resource(|r| r.h(NormalizePath::default()))
|
|
.finish();
|
|
|
|
// trailing slashes
|
|
let params = vec![
|
|
("/resource1/a/b", "", StatusCode::OK),
|
|
("/resource1/a/b/", "", StatusCode::NOT_FOUND),
|
|
("//resource2//a//b", "/resource2/a/b/", StatusCode::MOVED_PERMANENTLY),
|
|
("//resource2//a//b/", "/resource2/a/b/", StatusCode::MOVED_PERMANENTLY),
|
|
("///resource1//a//b", "/resource1/a/b", StatusCode::MOVED_PERMANENTLY),
|
|
("///resource1//a//b/", "", StatusCode::NOT_FOUND),
|
|
("/////resource1/a///b", "/resource1/a/b", StatusCode::MOVED_PERMANENTLY),
|
|
("/////resource1/a///b/", "", StatusCode::NOT_FOUND),
|
|
("/resource2/a/b", "/resource2/a/b/", StatusCode::MOVED_PERMANENTLY),
|
|
("/resource2/a/b/", "", StatusCode::OK),
|
|
("//resource2//a//b", "/resource2/a/b/", StatusCode::MOVED_PERMANENTLY),
|
|
("//resource2//a//b/", "/resource2/a/b/", StatusCode::MOVED_PERMANENTLY),
|
|
("///resource2//a//b", "/resource2/a/b/", StatusCode::MOVED_PERMANENTLY),
|
|
("///resource2//a//b/", "/resource2/a/b/", StatusCode::MOVED_PERMANENTLY),
|
|
("/////resource2/a///b", "/resource2/a/b/", StatusCode::MOVED_PERMANENTLY),
|
|
("/////resource2/a///b/", "/resource2/a/b/", StatusCode::MOVED_PERMANENTLY),
|
|
("/resource1/a/b?p=1", "", StatusCode::OK),
|
|
("/resource1/a/b/?p=1", "", StatusCode::NOT_FOUND),
|
|
("//resource2//a//b?p=1", "/resource2/a/b/?p=1", StatusCode::MOVED_PERMANENTLY),
|
|
("//resource2//a//b/?p=1", "/resource2/a/b/?p=1", StatusCode::MOVED_PERMANENTLY),
|
|
("///resource1//a//b?p=1", "/resource1/a/b?p=1", StatusCode::MOVED_PERMANENTLY),
|
|
("///resource1//a//b/?p=1", "", StatusCode::NOT_FOUND),
|
|
("/////resource1/a///b?p=1", "/resource1/a/b?p=1", StatusCode::MOVED_PERMANENTLY),
|
|
("/////resource1/a///b/?p=1", "", StatusCode::NOT_FOUND),
|
|
("/resource2/a/b?p=1", "/resource2/a/b/?p=1", StatusCode::MOVED_PERMANENTLY),
|
|
("//resource2//a//b?p=1", "/resource2/a/b/?p=1", StatusCode::MOVED_PERMANENTLY),
|
|
("//resource2//a//b/?p=1", "/resource2/a/b/?p=1", StatusCode::MOVED_PERMANENTLY),
|
|
("///resource2//a//b?p=1", "/resource2/a/b/?p=1", StatusCode::MOVED_PERMANENTLY),
|
|
("///resource2//a//b/?p=1", "/resource2/a/b/?p=1", StatusCode::MOVED_PERMANENTLY),
|
|
("/////resource2/a///b?p=1", "/resource2/a/b/?p=1", StatusCode::MOVED_PERMANENTLY),
|
|
("/////resource2/a///b/?p=1", "/resource2/a/b/?p=1", StatusCode::MOVED_PERMANENTLY),
|
|
];
|
|
for (path, target, code) in params {
|
|
let req = app.prepare_request(HttpRequest::from_path(path));
|
|
let resp = app.run(req);
|
|
let r = resp.as_response().unwrap();
|
|
assert_eq!(r.status(), code);
|
|
if !target.is_empty() {
|
|
assert_eq!(
|
|
target, r.headers().get(header::LOCATION).unwrap().to_str().unwrap());
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
}
|