mirror of
https://github.com/fafhrd91/actix-web
synced 2024-12-01 02:54:36 +01:00
818 lines
26 KiB
Rust
818 lines
26 KiB
Rust
use std::cell::RefCell;
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use std::fmt;
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use std::future::Future;
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use std::pin::Pin;
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use std::rc::Rc;
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use std::task::{Context, Poll};
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use actix_http::{Error, Extensions, Response};
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use actix_router::IntoPattern;
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use actix_service::boxed::{self, BoxService, BoxServiceFactory};
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use actix_service::{
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apply, apply_fn_factory, IntoServiceFactory, Service, ServiceFactory, Transform,
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};
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use futures_util::future::{ok, Either, LocalBoxFuture, Ready};
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use crate::data::Data;
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use crate::dev::{insert_slash, AppService, HttpServiceFactory, ResourceDef};
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use crate::extract::FromRequest;
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use crate::guard::Guard;
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use crate::handler::Factory;
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use crate::responder::Responder;
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use crate::route::{CreateRouteService, Route, RouteService};
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use crate::service::{ServiceRequest, ServiceResponse};
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type HttpService = BoxService<ServiceRequest, ServiceResponse, Error>;
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type HttpNewService = BoxServiceFactory<(), ServiceRequest, ServiceResponse, Error, ()>;
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/// *Resource* is an entry in resources table which corresponds to requested URL.
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///
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/// Resource in turn has at least one route.
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/// Route consists of an handlers objects and list of guards
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/// (objects that implement `Guard` trait).
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/// Resources and routes uses builder-like pattern for configuration.
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/// During request handling, resource object iterate through all routes
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/// and check guards for specific route, if request matches all
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/// guards, route considered matched and route handler get called.
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///
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/// ```rust
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/// use actix_web::{web, App, HttpResponse};
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///
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/// fn main() {
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/// let app = App::new().service(
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/// web::resource("/")
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/// .route(web::get().to(|| HttpResponse::Ok())));
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/// }
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/// ```
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///
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/// If no matching route could be found, *405* response code get returned.
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/// Default behavior could be overridden with `default_resource()` method.
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pub struct Resource<T = ResourceEndpoint> {
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endpoint: T,
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rdef: Vec<String>,
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name: Option<String>,
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routes: Vec<Route>,
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data: Option<Extensions>,
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guards: Vec<Box<dyn Guard>>,
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default: Rc<RefCell<Option<Rc<HttpNewService>>>>,
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factory_ref: Rc<RefCell<Option<ResourceFactory>>>,
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}
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impl Resource {
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pub fn new<T: IntoPattern>(path: T) -> Resource {
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let fref = Rc::new(RefCell::new(None));
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Resource {
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routes: Vec::new(),
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rdef: path.patterns(),
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name: None,
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endpoint: ResourceEndpoint::new(fref.clone()),
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factory_ref: fref,
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guards: Vec::new(),
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data: None,
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default: Rc::new(RefCell::new(None)),
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}
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}
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}
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impl<T> Resource<T>
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where
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T: ServiceFactory<
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Config = (),
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Request = ServiceRequest,
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Response = ServiceResponse,
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Error = Error,
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InitError = (),
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>,
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{
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/// Set resource name.
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///
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/// Name is used for url generation.
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pub fn name(mut self, name: &str) -> Self {
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self.name = Some(name.to_string());
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self
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}
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/// Add match guard to a resource.
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///
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/// ```rust
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/// use actix_web::{web, guard, App, HttpResponse};
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///
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/// async fn index(data: web::Path<(String, String)>) -> &'static str {
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/// "Welcome!"
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/// }
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///
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/// fn main() {
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/// let app = App::new()
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/// .service(
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/// web::resource("/app")
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/// .guard(guard::Header("content-type", "text/plain"))
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/// .route(web::get().to(index))
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/// )
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/// .service(
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/// web::resource("/app")
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/// .guard(guard::Header("content-type", "text/json"))
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/// .route(web::get().to(|| HttpResponse::MethodNotAllowed()))
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/// );
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/// }
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/// ```
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pub fn guard<G: Guard + 'static>(mut self, guard: G) -> Self {
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self.guards.push(Box::new(guard));
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self
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}
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pub(crate) fn add_guards(mut self, guards: Vec<Box<dyn Guard>>) -> Self {
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self.guards.extend(guards);
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self
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}
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/// Register a new route.
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///
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/// ```rust
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/// use actix_web::{web, guard, App, HttpResponse};
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///
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/// fn main() {
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/// let app = App::new().service(
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/// web::resource("/").route(
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/// web::route()
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/// .guard(guard::Any(guard::Get()).or(guard::Put()))
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/// .guard(guard::Header("Content-Type", "text/plain"))
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/// .to(|| HttpResponse::Ok()))
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/// );
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/// }
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/// ```
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///
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/// Multiple routes could be added to a resource. Resource object uses
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/// match guards for route selection.
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///
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/// ```rust
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/// use actix_web::{web, guard, App};
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///
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/// fn main() {
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/// let app = App::new().service(
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/// web::resource("/container/")
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/// .route(web::get().to(get_handler))
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/// .route(web::post().to(post_handler))
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/// .route(web::delete().to(delete_handler))
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/// );
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/// }
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/// # async fn get_handler() -> impl actix_web::Responder { actix_web::HttpResponse::Ok() }
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/// # async fn post_handler() -> impl actix_web::Responder { actix_web::HttpResponse::Ok() }
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/// # async fn delete_handler() -> impl actix_web::Responder { actix_web::HttpResponse::Ok() }
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/// ```
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pub fn route(mut self, route: Route) -> Self {
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self.routes.push(route);
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self
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}
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/// Provide resource specific data. This method allows to add extractor
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/// configuration or specific state available via `Data<T>` extractor.
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/// Provided data is available for all routes registered for the current resource.
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/// Resource data overrides data registered by `App::data()` method.
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///
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/// ```rust
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/// use actix_web::{web, App, FromRequest};
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///
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/// /// extract text data from request
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/// async fn index(body: String) -> String {
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/// format!("Body {}!", body)
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/// }
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///
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/// fn main() {
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/// let app = App::new().service(
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/// web::resource("/index.html")
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/// // limit size of the payload
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/// .data(String::configure(|cfg| {
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/// cfg.limit(4096)
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/// }))
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/// .route(
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/// web::get()
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/// // register handler
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/// .to(index)
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/// ));
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/// }
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/// ```
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pub fn data<U: 'static>(self, data: U) -> Self {
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self.app_data(Data::new(data))
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}
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/// Add resource data.
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///
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/// Data of different types from parent contexts will still be accessible.
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pub fn app_data<U: 'static>(mut self, data: U) -> Self {
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if self.data.is_none() {
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self.data = Some(Extensions::new());
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}
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self.data.as_mut().unwrap().insert(data);
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self
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}
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/// Register a new route and add handler. This route matches all requests.
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///
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/// ```rust
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/// use actix_web::*;
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///
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/// fn index(req: HttpRequest) -> HttpResponse {
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/// unimplemented!()
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/// }
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///
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/// App::new().service(web::resource("/").to(index));
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/// ```
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///
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/// This is shortcut for:
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///
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/// ```rust
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/// # extern crate actix_web;
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/// # use actix_web::*;
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/// # fn index(req: HttpRequest) -> HttpResponse { unimplemented!() }
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/// App::new().service(web::resource("/").route(web::route().to(index)));
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/// ```
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pub fn to<F, I, R, U>(mut self, handler: F) -> Self
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where
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F: Factory<I, R, U>,
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I: FromRequest + 'static,
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R: Future<Output = U> + 'static,
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U: Responder + 'static,
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{
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self.routes.push(Route::new().to(handler));
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self
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}
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/// Register a resource middleware.
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///
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/// This is similar to `App's` middlewares, but middleware get invoked on resource level.
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/// Resource level middlewares are not allowed to change response
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/// type (i.e modify response's body).
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///
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/// **Note**: middlewares get called in opposite order of middlewares registration.
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pub fn wrap<M>(
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self,
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mw: M,
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) -> Resource<
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impl ServiceFactory<
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Config = (),
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Request = ServiceRequest,
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Response = ServiceResponse,
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Error = Error,
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InitError = (),
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>,
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>
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where
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M: Transform<
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T::Service,
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Request = ServiceRequest,
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Response = ServiceResponse,
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Error = Error,
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InitError = (),
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>,
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{
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Resource {
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endpoint: apply(mw, self.endpoint),
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rdef: self.rdef,
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name: self.name,
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guards: self.guards,
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routes: self.routes,
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default: self.default,
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data: self.data,
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factory_ref: self.factory_ref,
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}
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}
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/// Register a resource middleware function.
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///
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/// This function accepts instance of `ServiceRequest` type and
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/// mutable reference to the next middleware in chain.
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///
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/// This is similar to `App's` middlewares, but middleware get invoked on resource level.
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/// Resource level middlewares are not allowed to change response
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/// type (i.e modify response's body).
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///
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/// ```rust
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/// use actix_service::Service;
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/// use actix_web::{web, App};
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/// use actix_web::http::{header::CONTENT_TYPE, HeaderValue};
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///
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/// async fn index() -> &'static str {
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/// "Welcome!"
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/// }
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///
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/// fn main() {
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/// let app = App::new().service(
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/// web::resource("/index.html")
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/// .wrap_fn(|req, srv| {
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/// let fut = srv.call(req);
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/// async {
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/// let mut res = fut.await?;
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/// res.headers_mut().insert(
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/// CONTENT_TYPE, HeaderValue::from_static("text/plain"),
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/// );
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/// Ok(res)
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/// }
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/// })
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/// .route(web::get().to(index)));
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/// }
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/// ```
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pub fn wrap_fn<F, R>(
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self,
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mw: F,
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) -> Resource<
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impl ServiceFactory<
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Config = (),
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Request = ServiceRequest,
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Response = ServiceResponse,
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Error = Error,
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InitError = (),
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>,
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>
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where
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F: FnMut(ServiceRequest, &mut T::Service) -> R + Clone,
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R: Future<Output = Result<ServiceResponse, Error>>,
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{
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Resource {
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endpoint: apply_fn_factory(self.endpoint, mw),
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rdef: self.rdef,
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name: self.name,
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guards: self.guards,
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routes: self.routes,
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default: self.default,
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data: self.data,
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factory_ref: self.factory_ref,
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}
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}
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/// Default service to be used if no matching route could be found.
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/// By default *405* response get returned. Resource does not use
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/// default handler from `App` or `Scope`.
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pub fn default_service<F, U>(mut self, f: F) -> Self
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where
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F: IntoServiceFactory<U>,
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U: ServiceFactory<
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Config = (),
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Request = ServiceRequest,
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Response = ServiceResponse,
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Error = Error,
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> + 'static,
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U::InitError: fmt::Debug,
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{
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// create and configure default resource
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self.default = Rc::new(RefCell::new(Some(Rc::new(boxed::factory(
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f.into_factory().map_init_err(|e| {
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log::error!("Can not construct default service: {:?}", e)
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}),
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)))));
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self
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}
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}
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impl<T> HttpServiceFactory for Resource<T>
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where
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T: ServiceFactory<
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Config = (),
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Request = ServiceRequest,
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Response = ServiceResponse,
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Error = Error,
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InitError = (),
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> + 'static,
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{
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fn register(mut self, config: &mut AppService) {
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let guards = if self.guards.is_empty() {
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None
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} else {
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Some(std::mem::take(&mut self.guards))
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};
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let mut rdef = if config.is_root() || !self.rdef.is_empty() {
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ResourceDef::new(insert_slash(self.rdef.clone()))
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} else {
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ResourceDef::new(self.rdef.clone())
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};
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if let Some(ref name) = self.name {
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*rdef.name_mut() = name.clone();
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}
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// custom app data storage
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if let Some(ref mut ext) = self.data {
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config.set_service_data(ext);
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}
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config.register_service(rdef, guards, self, None)
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}
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}
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impl<T> IntoServiceFactory<T> for Resource<T>
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where
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T: ServiceFactory<
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Config = (),
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Request = ServiceRequest,
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Response = ServiceResponse,
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Error = Error,
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InitError = (),
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>,
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{
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fn into_factory(self) -> T {
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*self.factory_ref.borrow_mut() = Some(ResourceFactory {
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routes: self.routes,
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data: self.data.map(Rc::new),
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default: self.default,
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});
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self.endpoint
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}
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}
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pub struct ResourceFactory {
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routes: Vec<Route>,
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data: Option<Rc<Extensions>>,
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default: Rc<RefCell<Option<Rc<HttpNewService>>>>,
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}
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impl ServiceFactory for ResourceFactory {
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type Config = ();
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type Request = ServiceRequest;
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type Response = ServiceResponse;
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type Error = Error;
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type InitError = ();
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type Service = ResourceService;
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type Future = CreateResourceService;
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fn new_service(&self, _: ()) -> Self::Future {
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let default_fut = if let Some(ref default) = *self.default.borrow() {
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Some(default.new_service(()))
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} else {
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None
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};
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CreateResourceService {
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fut: self
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.routes
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.iter()
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.map(|route| CreateRouteServiceItem::Future(route.new_service(())))
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.collect(),
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data: self.data.clone(),
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default: None,
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default_fut,
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}
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}
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}
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enum CreateRouteServiceItem {
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Future(CreateRouteService),
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Service(RouteService),
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}
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pub struct CreateResourceService {
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fut: Vec<CreateRouteServiceItem>,
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data: Option<Rc<Extensions>>,
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default: Option<HttpService>,
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default_fut: Option<LocalBoxFuture<'static, Result<HttpService, ()>>>,
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}
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impl Future for CreateResourceService {
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type Output = Result<ResourceService, ()>;
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fn poll(mut self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Self::Output> {
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let mut done = true;
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if let Some(ref mut fut) = self.default_fut {
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match Pin::new(fut).poll(cx)? {
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Poll::Ready(default) => self.default = Some(default),
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Poll::Pending => done = false,
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}
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}
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// poll http services
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for item in &mut self.fut {
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match item {
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CreateRouteServiceItem::Future(ref mut fut) => match Pin::new(fut)
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.poll(cx)?
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{
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Poll::Ready(route) => *item = CreateRouteServiceItem::Service(route),
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Poll::Pending => {
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done = false;
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}
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},
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CreateRouteServiceItem::Service(_) => continue,
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};
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}
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if done {
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let routes = self
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.fut
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.drain(..)
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.map(|item| match item {
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CreateRouteServiceItem::Service(service) => service,
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CreateRouteServiceItem::Future(_) => unreachable!(),
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})
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.collect();
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Poll::Ready(Ok(ResourceService {
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routes,
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data: self.data.clone(),
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default: self.default.take(),
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}))
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} else {
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Poll::Pending
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}
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}
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}
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|
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pub struct ResourceService {
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routes: Vec<RouteService>,
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data: Option<Rc<Extensions>>,
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default: Option<HttpService>,
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}
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impl Service for ResourceService {
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type Request = ServiceRequest;
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type Response = ServiceResponse;
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type Error = Error;
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type Future = Either<
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Ready<Result<ServiceResponse, Error>>,
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LocalBoxFuture<'static, Result<ServiceResponse, Error>>,
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>;
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fn poll_ready(&mut self, _: &mut Context<'_>) -> Poll<Result<(), Self::Error>> {
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Poll::Ready(Ok(()))
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}
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fn call(&mut self, mut req: ServiceRequest) -> Self::Future {
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for route in self.routes.iter_mut() {
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if route.check(&mut req) {
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if let Some(ref data) = self.data {
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req.add_data_container(data.clone());
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}
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return Either::Right(route.call(req));
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}
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}
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if let Some(ref mut default) = self.default {
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if let Some(ref data) = self.data {
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req.add_data_container(data.clone());
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}
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Either::Right(default.call(req))
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} else {
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let req = req.into_parts().0;
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Either::Left(ok(ServiceResponse::new(
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req,
|
|
Response::MethodNotAllowed().finish(),
|
|
)))
|
|
}
|
|
}
|
|
}
|
|
|
|
#[doc(hidden)]
|
|
pub struct ResourceEndpoint {
|
|
factory: Rc<RefCell<Option<ResourceFactory>>>,
|
|
}
|
|
|
|
impl ResourceEndpoint {
|
|
fn new(factory: Rc<RefCell<Option<ResourceFactory>>>) -> Self {
|
|
ResourceEndpoint { factory }
|
|
}
|
|
}
|
|
|
|
impl ServiceFactory for ResourceEndpoint {
|
|
type Config = ();
|
|
type Request = ServiceRequest;
|
|
type Response = ServiceResponse;
|
|
type Error = Error;
|
|
type InitError = ();
|
|
type Service = ResourceService;
|
|
type Future = CreateResourceService;
|
|
|
|
fn new_service(&self, _: ()) -> Self::Future {
|
|
self.factory.borrow_mut().as_mut().unwrap().new_service(())
|
|
}
|
|
}
|
|
|
|
#[cfg(test)]
|
|
mod tests {
|
|
use std::time::Duration;
|
|
|
|
use actix_rt::time::delay_for;
|
|
use actix_service::Service;
|
|
use futures_util::future::ok;
|
|
|
|
use crate::http::{header, HeaderValue, Method, StatusCode};
|
|
use crate::middleware::DefaultHeaders;
|
|
use crate::service::ServiceRequest;
|
|
use crate::test::{call_service, init_service, TestRequest};
|
|
use crate::{guard, web, App, Error, HttpResponse};
|
|
|
|
#[actix_rt::test]
|
|
async fn test_middleware() {
|
|
let mut srv =
|
|
init_service(
|
|
App::new().service(
|
|
web::resource("/test")
|
|
.name("test")
|
|
.wrap(DefaultHeaders::new().header(
|
|
header::CONTENT_TYPE,
|
|
HeaderValue::from_static("0001"),
|
|
))
|
|
.route(web::get().to(|| HttpResponse::Ok())),
|
|
),
|
|
)
|
|
.await;
|
|
let req = TestRequest::with_uri("/test").to_request();
|
|
let resp = call_service(&mut srv, req).await;
|
|
assert_eq!(resp.status(), StatusCode::OK);
|
|
assert_eq!(
|
|
resp.headers().get(header::CONTENT_TYPE).unwrap(),
|
|
HeaderValue::from_static("0001")
|
|
);
|
|
}
|
|
|
|
#[actix_rt::test]
|
|
async fn test_middleware_fn() {
|
|
let mut srv = init_service(
|
|
App::new().service(
|
|
web::resource("/test")
|
|
.wrap_fn(|req, srv| {
|
|
let fut = srv.call(req);
|
|
async {
|
|
fut.await.map(|mut res| {
|
|
res.headers_mut().insert(
|
|
header::CONTENT_TYPE,
|
|
HeaderValue::from_static("0001"),
|
|
);
|
|
res
|
|
})
|
|
}
|
|
})
|
|
.route(web::get().to(|| HttpResponse::Ok())),
|
|
),
|
|
)
|
|
.await;
|
|
let req = TestRequest::with_uri("/test").to_request();
|
|
let resp = call_service(&mut srv, req).await;
|
|
assert_eq!(resp.status(), StatusCode::OK);
|
|
assert_eq!(
|
|
resp.headers().get(header::CONTENT_TYPE).unwrap(),
|
|
HeaderValue::from_static("0001")
|
|
);
|
|
}
|
|
|
|
#[actix_rt::test]
|
|
async fn test_to() {
|
|
let mut srv =
|
|
init_service(App::new().service(web::resource("/test").to(|| async {
|
|
delay_for(Duration::from_millis(100)).await;
|
|
Ok::<_, Error>(HttpResponse::Ok())
|
|
})))
|
|
.await;
|
|
let req = TestRequest::with_uri("/test").to_request();
|
|
let resp = call_service(&mut srv, req).await;
|
|
assert_eq!(resp.status(), StatusCode::OK);
|
|
}
|
|
|
|
#[actix_rt::test]
|
|
async fn test_pattern() {
|
|
let mut srv = init_service(
|
|
App::new().service(
|
|
web::resource(["/test", "/test2"])
|
|
.to(|| async { Ok::<_, Error>(HttpResponse::Ok()) }),
|
|
),
|
|
)
|
|
.await;
|
|
let req = TestRequest::with_uri("/test").to_request();
|
|
let resp = call_service(&mut srv, req).await;
|
|
assert_eq!(resp.status(), StatusCode::OK);
|
|
let req = TestRequest::with_uri("/test2").to_request();
|
|
let resp = call_service(&mut srv, req).await;
|
|
assert_eq!(resp.status(), StatusCode::OK);
|
|
}
|
|
|
|
#[actix_rt::test]
|
|
async fn test_default_resource() {
|
|
let mut srv = init_service(
|
|
App::new()
|
|
.service(
|
|
web::resource("/test").route(web::get().to(|| HttpResponse::Ok())),
|
|
)
|
|
.default_service(|r: ServiceRequest| {
|
|
ok(r.into_response(HttpResponse::BadRequest()))
|
|
}),
|
|
)
|
|
.await;
|
|
let req = TestRequest::with_uri("/test").to_request();
|
|
let resp = call_service(&mut srv, req).await;
|
|
assert_eq!(resp.status(), StatusCode::OK);
|
|
|
|
let req = TestRequest::with_uri("/test")
|
|
.method(Method::POST)
|
|
.to_request();
|
|
let resp = call_service(&mut srv, req).await;
|
|
assert_eq!(resp.status(), StatusCode::METHOD_NOT_ALLOWED);
|
|
|
|
let mut srv = init_service(
|
|
App::new().service(
|
|
web::resource("/test")
|
|
.route(web::get().to(|| HttpResponse::Ok()))
|
|
.default_service(|r: ServiceRequest| {
|
|
ok(r.into_response(HttpResponse::BadRequest()))
|
|
}),
|
|
),
|
|
)
|
|
.await;
|
|
|
|
let req = TestRequest::with_uri("/test").to_request();
|
|
let resp = call_service(&mut srv, req).await;
|
|
assert_eq!(resp.status(), StatusCode::OK);
|
|
|
|
let req = TestRequest::with_uri("/test")
|
|
.method(Method::POST)
|
|
.to_request();
|
|
let resp = call_service(&mut srv, req).await;
|
|
assert_eq!(resp.status(), StatusCode::BAD_REQUEST);
|
|
}
|
|
|
|
#[actix_rt::test]
|
|
async fn test_resource_guards() {
|
|
let mut srv = init_service(
|
|
App::new()
|
|
.service(
|
|
web::resource("/test/{p}")
|
|
.guard(guard::Get())
|
|
.to(|| HttpResponse::Ok()),
|
|
)
|
|
.service(
|
|
web::resource("/test/{p}")
|
|
.guard(guard::Put())
|
|
.to(|| HttpResponse::Created()),
|
|
)
|
|
.service(
|
|
web::resource("/test/{p}")
|
|
.guard(guard::Delete())
|
|
.to(|| HttpResponse::NoContent()),
|
|
),
|
|
)
|
|
.await;
|
|
|
|
let req = TestRequest::with_uri("/test/it")
|
|
.method(Method::GET)
|
|
.to_request();
|
|
let resp = call_service(&mut srv, req).await;
|
|
assert_eq!(resp.status(), StatusCode::OK);
|
|
|
|
let req = TestRequest::with_uri("/test/it")
|
|
.method(Method::PUT)
|
|
.to_request();
|
|
let resp = call_service(&mut srv, req).await;
|
|
assert_eq!(resp.status(), StatusCode::CREATED);
|
|
|
|
let req = TestRequest::with_uri("/test/it")
|
|
.method(Method::DELETE)
|
|
.to_request();
|
|
let resp = call_service(&mut srv, req).await;
|
|
assert_eq!(resp.status(), StatusCode::NO_CONTENT);
|
|
}
|
|
|
|
#[actix_rt::test]
|
|
async fn test_data() {
|
|
let mut srv = init_service(
|
|
App::new()
|
|
.data(1.0f64)
|
|
.data(1usize)
|
|
.app_data(web::Data::new('-'))
|
|
.service(
|
|
web::resource("/test")
|
|
.data(10usize)
|
|
.app_data(web::Data::new('*'))
|
|
.guard(guard::Get())
|
|
.to(
|
|
|data1: web::Data<usize>,
|
|
data2: web::Data<char>,
|
|
data3: web::Data<f64>| {
|
|
assert_eq!(**data1, 10);
|
|
assert_eq!(**data2, '*');
|
|
assert_eq!(**data3, 1.0);
|
|
HttpResponse::Ok()
|
|
},
|
|
),
|
|
),
|
|
)
|
|
.await;
|
|
|
|
let req = TestRequest::get().uri("/test").to_request();
|
|
let resp = call_service(&mut srv, req).await;
|
|
assert_eq!(resp.status(), StatusCode::OK);
|
|
}
|
|
|
|
#[actix_rt::test]
|
|
async fn test_data_default_service() {
|
|
let mut srv = init_service(
|
|
App::new().data(1usize).service(
|
|
web::resource("/test")
|
|
.data(10usize)
|
|
.default_service(web::to(|data: web::Data<usize>| {
|
|
assert_eq!(**data, 10);
|
|
HttpResponse::Ok()
|
|
})),
|
|
),
|
|
)
|
|
.await;
|
|
|
|
let req = TestRequest::get().uri("/test").to_request();
|
|
let resp = call_service(&mut srv, req).await;
|
|
assert_eq!(resp.status(), StatusCode::OK);
|
|
}
|
|
}
|