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Code Issues Releases Wiki Activity

unify generics across App, Scope and Resource (#2572)

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Co-authored-by: Rob Ede <robjtede@icloud.com>
This commit is contained in:
Ali MJ Al-Nasrawy 2022-01-05 18:02:28 +03:00 committed by GitHub
parent 4431c8da65
commit c3ce33df05
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5 changed files with 186 additions and 232 deletions
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150
src/app.rs
View File

@ -51,7 +51,10 @@ impl App<AppEntry> {
}
}
impl<T> App<T> {
impl<T> App<T>
where
T: ServiceFactory<ServiceRequest, Config = (), Error = Error, InitError = ()>,
{
/// Set application (root level) data.
///
/// Application data stored with `App::app_data()` method is available through the
@ -317,65 +320,63 @@ impl<T> App<T> {
self
}
/// Registers middleware, in the form of a middleware component (type),
/// that runs during inbound and/or outbound processing in the request
/// life-cycle (request -> response), modifying request/response as
/// necessary, across all requests managed by the *Application*.
/// Registers an app-wide middleware.
///
/// Use middleware when you need to read or modify *every* request or
/// response in some way.
/// Registers middleware, in the form of a middleware compo nen t (type), that runs during
/// inbound and/or outbound processing in the request life-cycle (request -> response),
/// modifying request/response as necessary, across all requests managed by the `App`.
///
/// Notice that the keyword for registering middleware is `wrap`. As you
/// register middleware using `wrap` in the App builder, imagine wrapping
/// layers around an inner App. The first middleware layer exposed to a
/// Request is the outermost layer-- the *last* registered in
/// the builder chain. Consequently, the *first* middleware registered
/// in the builder chain is the *last* to execute during request processing.
/// Use middleware when you need to read or modify *every* request or response in some way.
///
/// Middleware can be applied similarly to individual `Scope`s and `Resource`s.
/// See [`Scope::wrap`](crate::Scope::wrap) and [`Resource::wrap`].
///
/// # Middleware Order
/// Notice that the keyword for registering middleware is `wrap`. As you register middleware
/// using `wrap` in the App builder, imagine wrapping layers around an inner App. The first
/// middleware layer exposed to a Request is the outermost layer (i.e., the *last* registered in
/// the builder chain). Consequently, the *first* middleware registered in the builder chain is
/// the *last* to start executing during request processing.
///
/// Ordering is less obvious when wrapped services also have middleware applied. In this case,
/// middlewares are run in reverse order for `App` _and then_ in reverse order for the
/// wrapped service.
///
/// # Examples
/// ```
/// use actix_service::Service;
/// use actix_web::{middleware, web, App};
/// use actix_web::http::header::{CONTENT_TYPE, HeaderValue};
///
/// async fn index() -> &'static str {
/// "Welcome!"
/// }
///
/// fn main() {
/// let app = App::new()
/// .wrap(middleware::Logger::default())
/// .route("/index.html", web::get().to(index));
/// }
/// let app = App::new()
/// .wrap(middleware::Logger::default())
/// .route("/index.html", web::get().to(index));
/// ```
pub fn wrap<M, B, B1>(
#[doc(alias = "middleware")]
#[doc(alias = "use")] // nodejs terminology
pub fn wrap<M, B>(
self,
mw: M,
) -> App<
impl ServiceFactory<
ServiceRequest,
Config = (),
Response = ServiceResponse<B1>,
Response = ServiceResponse<B>,
Error = Error,
InitError = (),
>,
>
where
T: ServiceFactory<
ServiceRequest,
Response = ServiceResponse<B>,
Error = Error,
Config = (),
InitError = (),
>,
B: MessageBody,
M: Transform<
T::Service,
ServiceRequest,
Response = ServiceResponse<B1>,
Error = Error,
InitError = (),
>,
B1: MessageBody,
T::Service,
ServiceRequest,
Response = ServiceResponse<B>,
Error = Error,
InitError = (),
> + 'static,
B: MessageBody,
{
App {
endpoint: apply(mw, self.endpoint),
@ -388,61 +389,57 @@ impl<T> App<T> {
}
}
/// Registers middleware, in the form of a closure, that runs during inbound
/// and/or outbound processing in the request life-cycle (request -> response),
/// modifying request/response as necessary, across all requests managed by
/// the *Application*.
/// Registers an app-wide function middleware.
///
/// `mw` is a closure that runs during inbound and/or outbound processing in the request
/// life-cycle (request -> response), modifying request/response as necessary, across all
/// requests handled by the `App`.
///
/// Use middleware when you need to read or modify *every* request or response in some way.
///
/// Middleware can also be applied to individual `Scope`s and `Resource`s.
///
/// See [`App::wrap`] for details on how middlewares compose with each other.
///
/// # Examples
/// ```
/// use actix_service::Service;
/// use actix_web::{web, App};
/// use actix_web::{dev::Service as _, middleware, web, App};
/// use actix_web::http::header::{CONTENT_TYPE, HeaderValue};
///
/// async fn index() -> &'static str {
/// "Welcome!"
/// }
///
/// fn main() {
/// let app = App::new()
/// .wrap_fn(|req, srv| {
/// let fut = srv.call(req);
/// async {
/// let mut res = fut.await?;
/// res.headers_mut().insert(
/// CONTENT_TYPE, HeaderValue::from_static("text/plain"),
/// );
/// Ok(res)
/// }
/// })
/// .route("/index.html", web::get().to(index));
/// }
/// let app = App::new()
/// .wrap_fn(|req, srv| {
/// let fut = srv.call(req);
/// async {
/// let mut res = fut.await?;
/// res.headers_mut()
/// .insert(CONTENT_TYPE, HeaderValue::from_static("text/plain"));
/// Ok(res)
/// }
/// })
/// .route("/index.html", web::get().to(index));
/// ```
pub fn wrap_fn<F, R, B, B1>(
#[doc(alias = "middleware")]
#[doc(alias = "use")] // nodejs terminology
pub fn wrap_fn<F, R, B>(
self,
mw: F,
) -> App<
impl ServiceFactory<
ServiceRequest,
Config = (),
Response = ServiceResponse<B1>,
Response = ServiceResponse<B>,
Error = Error,
InitError = (),
>,
>
where
T: ServiceFactory<
ServiceRequest,
Response = ServiceResponse<B>,
Error = Error,
Config = (),
InitError = (),
>,
F: Fn(ServiceRequest, &T::Service) -> R + Clone + 'static,
R: Future<Output = Result<ServiceResponse<B>, Error>>,
B: MessageBody,
F: Fn(ServiceRequest, &T::Service) -> R + Clone,
R: Future<Output = Result<ServiceResponse<B1>, Error>>,
B1: MessageBody,
{
App {
endpoint: apply_fn_factory(self.endpoint, mw),
@ -458,15 +455,14 @@ impl<T> App<T> {
impl<T, B> IntoServiceFactory<AppInit<T, B>, Request> for App<T>
where
B: MessageBody,
T: ServiceFactory<
ServiceRequest,
Config = (),
Response = ServiceResponse<B>,
Error = Error,
InitError = (),
>,
T::Future: 'static,
ServiceRequest,
Config = (),
Response = ServiceResponse<B>,
Error = Error,
InitError = (),
> + 'static,
B: MessageBody,
{
fn into_factory(self) -> AppInit<T, B> {
AppInit {

25
src/middleware/compat.rs
View File

@ -150,11 +150,13 @@ mod tests {
use actix_service::IntoService;
use crate::dev::ServiceRequest;
use crate::http::StatusCode;
use crate::middleware::{self, Condition, Logger};
use crate::test::{call_service, init_service, TestRequest};
use crate::{web, App, HttpResponse};
use crate::{
dev::ServiceRequest,
http::StatusCode,
middleware::{self, Condition, Logger},
test::{self, call_service, init_service, TestRequest},
web, App, HttpResponse,
};
#[actix_rt::test]
#[cfg(all(feature = "cookies", feature = "__compress"))]
@ -219,4 +221,17 @@ mod tests {
let resp = call_service(&mw, TestRequest::default().to_srv_request()).await;
assert_eq!(resp.status(), StatusCode::INTERNAL_SERVER_ERROR);
}
#[actix_rt::test]
async fn compat_noop_is_noop() {
let srv = test::ok_service();
let mw = Compat::noop()
.new_transform(srv.into_service())
.await
.unwrap();
let resp = call_service(&mw, TestRequest::default().to_srv_request()).await;
assert_eq!(resp.status(), StatusCode::OK);
}
}

2
src/middleware/mod.rs
View File

@ -1,4 +1,4 @@
//! Commonly used middleware.
//! A collection of common middleware.
mod compat;
mod condition;

125
src/resource.rs
View File

@ -1,6 +1,6 @@
use std::{cell::RefCell, fmt, future::Future, marker::PhantomData, rc::Rc};
use std::{cell::RefCell, fmt, future::Future, rc::Rc};
use actix_http::{body::BoxBody, Extensions};
use actix_http::Extensions;
use actix_router::{IntoPatterns, Patterns};
use actix_service::{
apply, apply_fn_factory, boxed, fn_service, IntoServiceFactory, Service, ServiceFactory,
@ -42,7 +42,7 @@ use crate::{
///
/// If no matching route could be found, *405* response code get returned. Default behavior could be
/// overridden with `default_resource()` method.
pub struct Resource<T = ResourceEndpoint, B = BoxBody> {
pub struct Resource<T = ResourceEndpoint> {
endpoint: T,
rdef: Patterns,
name: Option<String>,
@ -51,7 +51,6 @@ pub struct Resource<T = ResourceEndpoint, B = BoxBody> {
guards: Vec<Box<dyn Guard>>,
default: BoxedHttpServiceFactory,
factory_ref: Rc<RefCell<Option<ResourceFactory>>>,
_phantom: PhantomData<B>,
}
impl Resource {
@ -69,21 +68,13 @@ impl Resource {
default: boxed::factory(fn_service(|req: ServiceRequest| async {
Ok(req.into_response(HttpResponse::MethodNotAllowed()))
})),
_phantom: PhantomData,
}
}
}
impl<T, B> Resource<T, B>
impl<T> Resource<T>
where
T: ServiceFactory<
ServiceRequest,
Config = (),
Response = ServiceResponse<B>,
Error = Error,
InitError = (),
>,
B: MessageBody,
T: ServiceFactory<ServiceRequest, Config = (), Error = Error, InitError = ()>,
{
/// Set resource name.
///
@ -241,35 +232,35 @@ where
self
}
/// Register a resource middleware.
/// Registers a resource middleware.
///
/// This is similar to `App's` middlewares, but middleware get invoked on resource level.
/// Resource level middlewares are not allowed to change response
/// type (i.e modify response's body).
/// `mw` is a middleware component (type), that can modify the request and response across all
/// routes managed by this `Resource`.
///
/// **Note**: middlewares get called in opposite order of middlewares registration.
pub fn wrap<M, B1>(
/// See [`App::wrap`](crate::App::wrap) for more details.
#[doc(alias = "middleware")]
#[doc(alias = "use")] // nodejs terminology
pub fn wrap<M, B>(
self,
mw: M,
) -> Resource<
impl ServiceFactory<
ServiceRequest,
Config = (),
Response = ServiceResponse<B1>,
Response = ServiceResponse<B>,
Error = Error,
InitError = (),
>,
B1,
>
where
M: Transform<
T::Service,
ServiceRequest,
Response = ServiceResponse<B1>,
Error = Error,
InitError = (),
>,
B1: MessageBody,
T::Service,
ServiceRequest,
Response = ServiceResponse<B>,
Error = Error,
InitError = (),
> + 'static,
B: MessageBody,
{
Resource {
endpoint: apply(mw, self.endpoint),
@ -280,61 +271,34 @@ where
default: self.default,
app_data: self.app_data,
factory_ref: self.factory_ref,
_phantom: PhantomData,
}
}
/// Register a resource middleware function.
/// Registers a resource function middleware.
///
/// This function accepts instance of `ServiceRequest` type and
/// mutable reference to the next middleware in chain.
/// `mw` is a closure that runs during inbound and/or outbound processing in the request
/// life-cycle (request -> response), modifying request/response as necessary, across all
/// requests handled by the `Resource`.
///
/// This is similar to `App's` middlewares, but middleware get invoked on resource level.
/// Resource level middlewares are not allowed to change response
/// type (i.e modify response's body).
///
/// ```
/// use actix_service::Service;
/// use actix_web::{web, App};
/// use actix_web::http::header::{CONTENT_TYPE, HeaderValue};
///
/// async fn index() -> &'static str {
/// "Welcome!"
/// }
///
/// fn main() {
/// let app = App::new().service(
/// web::resource("/index.html")
/// .wrap_fn(|req, srv| {
/// let fut = srv.call(req);
/// async {
/// let mut res = fut.await?;
/// res.headers_mut().insert(
/// CONTENT_TYPE, HeaderValue::from_static("text/plain"),
/// );
/// Ok(res)
/// }
/// })
/// .route(web::get().to(index)));
/// }
/// ```
pub fn wrap_fn<F, R, B1>(
/// See [`App::wrap_fn`](crate::App::wrap_fn) for examples and more details.
#[doc(alias = "middleware")]
#[doc(alias = "use")] // nodejs terminology
pub fn wrap_fn<F, R, B>(
self,
mw: F,
) -> Resource<
impl ServiceFactory<
ServiceRequest,
Config = (),
Response = ServiceResponse<B1>,
Response = ServiceResponse<B>,
Error = Error,
InitError = (),
>,
B1,
>
where
F: Fn(ServiceRequest, &T::Service) -> R + Clone,
R: Future<Output = Result<ServiceResponse<B1>, Error>>,
B1: MessageBody,
F: Fn(ServiceRequest, &T::Service) -> R + Clone + 'static,
R: Future<Output = Result<ServiceResponse<B>, Error>>,
B: MessageBody,
{
Resource {
endpoint: apply_fn_factory(self.endpoint, mw),
@ -345,7 +309,6 @@ where
default: self.default,
app_data: self.app_data,
factory_ref: self.factory_ref,
_phantom: PhantomData,
}
}
@ -373,7 +336,7 @@ where
}
}
impl<T, B> HttpServiceFactory for Resource<T, B>
impl<T, B> HttpServiceFactory for Resource<T>
where
T: ServiceFactory<
ServiceRequest,
@ -517,7 +480,7 @@ mod tests {
header::{self, HeaderValue},
Method, StatusCode,
},
middleware::{Compat, DefaultHeaders},
middleware::DefaultHeaders,
service::{ServiceRequest, ServiceResponse},
test::{call_service, init_service, TestRequest},
web, App, Error, HttpMessage, HttpResponse,
@ -525,31 +488,35 @@ mod tests {
#[test]
fn can_be_returned_from_fn() {
fn my_resource() -> Resource {
web::resource("/test").route(web::get().to(|| async { "hello" }))
fn my_resource_1() -> Resource {
web::resource("/test1").route(web::get().to(|| async { "hello" }))
}
fn my_compat_resource() -> Resource<
fn my_resource_2() -> Resource<
impl ServiceFactory<
ServiceRequest,
Config = (),
Response = ServiceResponse,
Response = ServiceResponse<impl MessageBody>,
Error = Error,
InitError = (),
>,
> {
web::resource("/test-compat")
web::resource("/test2")
.wrap_fn(|req, srv| {
let fut = srv.call(req);
async { Ok(fut.await?.map_into_right_body::<()>()) }
})
.wrap(Compat::noop())
.route(web::get().to(|| async { "hello" }))
}
fn my_resource_3() -> impl HttpServiceFactory {
web::resource("/test2").route(web::get().to(|| async { "hello" }))
}
App::new()
.service(my_resource())
.service(my_compat_resource());
.service(my_resource_1())
.service(my_resource_2())
.service(my_resource_3());
}
#[actix_rt::test]

116
src/scope.rs
View File

@ -1,9 +1,6 @@
use std::{cell::RefCell, fmt, future::Future, marker::PhantomData, mem, rc::Rc};
use std::{cell::RefCell, fmt, future::Future, mem, rc::Rc};
use actix_http::{
body::{BoxBody, MessageBody},
Extensions,
};
use actix_http::{body::MessageBody, Extensions};
use actix_router::{ResourceDef, Router};
use actix_service::{
apply, apply_fn_factory, boxed, IntoServiceFactory, Service, ServiceFactory,
@ -57,7 +54,7 @@ type Guards = Vec<Box<dyn Guard>>;
///
/// [pat]: crate::dev::ResourceDef#prefix-resources
/// [dynamic segments]: crate::dev::ResourceDef#dynamic-segments
pub struct Scope<T = ScopeEndpoint, B = BoxBody> {
pub struct Scope<T = ScopeEndpoint> {
endpoint: T,
rdef: String,
app_data: Option<Extensions>,
@ -66,7 +63,6 @@ pub struct Scope<T = ScopeEndpoint, B = BoxBody> {
default: Option<Rc<BoxedHttpServiceFactory>>,
external: Vec<ResourceDef>,
factory_ref: Rc<RefCell<Option<ScopeFactory>>>,
_phantom: PhantomData<B>,
}
impl Scope {
@ -83,21 +79,13 @@ impl Scope {
default: None,
external: Vec::new(),
factory_ref,
_phantom: Default::default(),
}
}
}
impl<T, B> Scope<T, B>
impl<T> Scope<T>
where
T: ServiceFactory<
ServiceRequest,
Config = (),
Response = ServiceResponse<B>,
Error = Error,
InitError = (),
>,
B: 'static,
T: ServiceFactory<ServiceRequest, Config = (), Error = Error, InitError = ()>,
{
/// Add match guard to a scope.
///
@ -296,32 +284,35 @@ where
self
}
/// Registers middleware, in the form of a middleware component (type), that runs during inbound
/// processing in the request life-cycle (request -> response), modifying request as necessary,
/// across all requests managed by the *Scope*.
/// Registers a scope-wide middleware.
///
/// Use middleware when you need to read or modify *every* request in some way.
pub fn wrap<M, B1>(
/// `mw` is a middleware component (type), that can modify the request and response across all
/// sub-resources managed by this `Scope`.
///
/// See [`App::wrap`](crate::App::wrap) for more details.
#[doc(alias = "middleware")]
#[doc(alias = "use")] // nodejs terminology
pub fn wrap<M, B>(
self,
mw: M,
) -> Scope<
impl ServiceFactory<
ServiceRequest,
Config = (),
Response = ServiceResponse<B1>,
Response = ServiceResponse<B>,
Error = Error,
InitError = (),
>,
B1,
>
where
M: Transform<
T::Service,
ServiceRequest,
Response = ServiceResponse<B1>,
Error = Error,
InitError = (),
>,
T::Service,
ServiceRequest,
Response = ServiceResponse<B>,
Error = Error,
InitError = (),
> + 'static,
B: MessageBody,
{
Scope {
endpoint: apply(mw, self.endpoint),
@ -332,54 +323,34 @@ where
default: self.default,
external: self.external,
factory_ref: self.factory_ref,
_phantom: PhantomData,
}
}
/// Registers middleware, in the form of a closure, that runs during inbound processing in the
/// request life-cycle (request -> response), modifying request as necessary, across all
/// requests managed by the *Scope*.
/// Registers a scope-wide function middleware.
///
/// # Examples
/// ```
/// use actix_service::Service;
/// use actix_web::{web, App};
/// use actix_web::http::header::{CONTENT_TYPE, HeaderValue};
/// `mw` is a closure that runs during inbound and/or outbound processing in the request
/// life-cycle (request -> response), modifying request/response as necessary, across all
/// requests handled by the `Scope`.
///
/// async fn index() -> &'static str {
/// "Welcome!"
/// }
///
/// let app = App::new().service(
/// web::scope("/app")
/// .wrap_fn(|req, srv| {
/// let fut = srv.call(req);
/// async {
/// let mut res = fut.await?;
/// res.headers_mut().insert(
/// CONTENT_TYPE, HeaderValue::from_static("text/plain"),
/// );
/// Ok(res)
/// }
/// })
/// .route("/index.html", web::get().to(index)));
/// ```
pub fn wrap_fn<F, R, B1>(
/// See [`App::wrap_fn`](crate::App::wrap_fn) for examples and more details.
#[doc(alias = "middleware")]
#[doc(alias = "use")] // nodejs terminology
pub fn wrap_fn<F, R, B>(
self,
mw: F,
) -> Scope<
impl ServiceFactory<
ServiceRequest,
Config = (),
Response = ServiceResponse<B1>,
Response = ServiceResponse<B>,
Error = Error,
InitError = (),
>,
B1,
>
where
F: Fn(ServiceRequest, &T::Service) -> R + Clone,
R: Future<Output = Result<ServiceResponse<B1>, Error>>,
F: Fn(ServiceRequest, &T::Service) -> R + Clone + 'static,
R: Future<Output = Result<ServiceResponse<B>, Error>>,
B: MessageBody,
{
Scope {
endpoint: apply_fn_factory(self.endpoint, mw),
@ -390,12 +361,11 @@ where
default: self.default,
external: self.external,
factory_ref: self.factory_ref,
_phantom: PhantomData,
}
}
}
impl<T, B> HttpServiceFactory for Scope<T, B>
impl<T, B> HttpServiceFactory for Scope<T>
where
T: ServiceFactory<
ServiceRequest,
@ -596,7 +566,7 @@ mod tests {
header::{self, HeaderValue},
Method, StatusCode,
},
middleware::{Compat, DefaultHeaders},
middleware::DefaultHeaders,
service::{ServiceRequest, ServiceResponse},
test::{assert_body_eq, call_service, init_service, read_body, TestRequest},
web, App, HttpMessage, HttpRequest, HttpResponse,
@ -604,16 +574,16 @@ mod tests {
#[test]
fn can_be_returned_from_fn() {
fn my_scope() -> Scope {
fn my_scope_1() -> Scope {
web::scope("/test")
.service(web::resource("").route(web::get().to(|| async { "hello" })))
}
fn my_compat_scope() -> Scope<
fn my_scope_2() -> Scope<
impl ServiceFactory<
ServiceRequest,
Config = (),
Response = ServiceResponse,
Response = ServiceResponse<impl MessageBody>,
Error = Error,
InitError = (),
>,
@ -623,11 +593,17 @@ mod tests {
let fut = srv.call(req);
async { Ok(fut.await?.map_into_right_body::<()>()) }
})
.wrap(Compat::noop())
.service(web::resource("").route(web::get().to(|| async { "hello" })))
}
App::new().service(my_scope()).service(my_compat_scope());
fn my_scope_3() -> impl HttpServiceFactory {
my_scope_2()
}
App::new()
.service(my_scope_1())
.service(my_scope_2())
.service(my_scope_3());
}
#[actix_rt::test]