mirror of
https://github.com/fafhrd91/actix-web
synced 2024-11-28 01:52:57 +01:00
514 lines
16 KiB
Rust
514 lines
16 KiB
Rust
use std::cell::RefCell;
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use std::marker::PhantomData;
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use std::rc::Rc;
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use actix_http::body::{Body, MessageBody};
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use actix_server_config::ServerConfig;
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use actix_service::boxed::{self, BoxedNewService};
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use actix_service::{
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ApplyTransform, IntoNewService, IntoTransform, NewService, Transform,
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};
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use futures::IntoFuture;
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use crate::app_service::{AppChain, AppEntry, AppInit, AppRouting, AppRoutingFactory};
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use crate::config::{AppConfig, AppConfigInner};
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use crate::data::{Data, DataFactory};
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use crate::dev::{PayloadStream, ResourceDef};
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use crate::error::Error;
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use crate::resource::Resource;
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use crate::route::Route;
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use crate::service::{
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HttpServiceFactory, ServiceFactory, ServiceFactoryWrapper, ServiceRequest,
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ServiceResponse,
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};
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type HttpNewService<P> =
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BoxedNewService<(), ServiceRequest<P>, ServiceResponse, Error, ()>;
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/// Application builder - structure that follows the builder pattern
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/// for building application instances.
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pub struct App<P, T>
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where
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T: NewService<Request = ServiceRequest, Response = ServiceRequest<P>>,
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{
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chain: T,
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data: Vec<Box<DataFactory>>,
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config: AppConfigInner,
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_t: PhantomData<(P,)>,
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}
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impl App<PayloadStream, AppChain> {
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/// Create application builder. Application can be configured with a builder-like pattern.
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pub fn new() -> Self {
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App {
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chain: AppChain,
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data: Vec::new(),
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config: AppConfigInner::default(),
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_t: PhantomData,
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}
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}
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}
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impl<P, T> App<P, T>
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where
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P: 'static,
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T: NewService<
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Request = ServiceRequest,
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Response = ServiceRequest<P>,
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Error = Error,
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InitError = (),
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>,
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{
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/// Set application data. Applicatin data could be accessed
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/// by using `Data<T>` extractor where `T` is data type.
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///
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/// **Note**: http server accepts an application factory rather than
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/// an application instance. Http server constructs an application
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/// instance for each thread, thus application data must be constructed
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/// multiple times. If you want to share data between different
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/// threads, a shared object should be used, e.g. `Arc`. Application
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/// data does not need to be `Send` or `Sync`.
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///
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/// ```rust
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/// use std::cell::Cell;
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/// use actix_web::{web, App};
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///
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/// struct MyData {
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/// counter: Cell<usize>,
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/// }
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///
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/// fn index(data: web::Data<MyData>) {
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/// data.counter.set(data.counter.get() + 1);
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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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/// .data(MyData{ counter: Cell::new(0) })
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/// .service(
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/// web::resource("/index.html").route(
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/// web::get().to(index)));
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/// }
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/// ```
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pub fn data<S: 'static>(mut self, data: S) -> Self {
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self.data.push(Box::new(Data::new(data)));
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self
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}
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/// Set application data factory. This function is
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/// similar to `.data()` but it accepts data factory. Data object get
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/// constructed asynchronously during application initialization.
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pub fn data_factory<F, Out>(mut self, data: F) -> Self
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where
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F: Fn() -> Out + 'static,
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Out: IntoFuture + 'static,
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Out::Error: std::fmt::Debug,
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{
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self.data.push(Box::new(data));
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self
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}
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/// Register a middleware.
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pub fn wrap<M, B, F>(
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self,
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mw: F,
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) -> AppRouter<
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T,
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P,
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B,
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impl NewService<
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Request = ServiceRequest<P>,
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Response = ServiceResponse<B>,
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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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AppRouting<P>,
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Request = ServiceRequest<P>,
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Response = ServiceResponse<B>,
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Error = Error,
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InitError = (),
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>,
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F: IntoTransform<M, AppRouting<P>>,
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{
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let fref = Rc::new(RefCell::new(None));
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let endpoint = ApplyTransform::new(mw, AppEntry::new(fref.clone()));
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AppRouter {
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endpoint,
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chain: self.chain,
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data: self.data,
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services: Vec::new(),
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default: None,
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factory_ref: fref,
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config: self.config,
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external: Vec::new(),
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_t: PhantomData,
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}
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}
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/// Register a request modifier. It can modify any request parameters
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/// including payload stream type.
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pub fn chain<C, F, P1>(
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self,
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chain: C,
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) -> App<
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P1,
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impl NewService<
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Request = ServiceRequest,
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Response = ServiceRequest<P1>,
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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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C: NewService<
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Request = ServiceRequest<P>,
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Response = ServiceRequest<P1>,
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Error = Error,
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InitError = (),
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>,
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F: IntoNewService<C>,
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{
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let chain = self.chain.and_then(chain.into_new_service());
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App {
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chain,
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data: self.data,
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config: self.config,
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_t: PhantomData,
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}
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}
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/// Configure route for a specific path.
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///
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/// This is a simplified version of the `App::service()` method.
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/// This method can be used multiple times with same path, in that case
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/// multiple resources with one route would be registered for same resource path.
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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 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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/// .route("/test1", web::get().to(index))
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/// .route("/test2", web::post().to(|| HttpResponse::MethodNotAllowed()));
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/// }
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/// ```
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pub fn route(
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self,
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path: &str,
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mut route: Route<P>,
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) -> AppRouter<T, P, Body, AppEntry<P>> {
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self.service(
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Resource::new(path)
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.add_guards(route.take_guards())
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.route(route),
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)
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}
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/// Register http service.
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///
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/// Http service is any type that implements `HttpServiceFactory` trait.
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///
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/// Actix web provides several services implementations:
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///
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/// * *Resource* is an entry in resource table which corresponds to requested URL.
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/// * *Scope* is a set of resources with common root path.
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/// * "StaticFiles" is a service for static files support
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pub fn service<F>(self, service: F) -> AppRouter<T, P, Body, AppEntry<P>>
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where
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F: HttpServiceFactory<P> + 'static,
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{
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let fref = Rc::new(RefCell::new(None));
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AppRouter {
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chain: self.chain,
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default: None,
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endpoint: AppEntry::new(fref.clone()),
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factory_ref: fref,
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data: self.data,
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config: self.config,
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services: vec![Box::new(ServiceFactoryWrapper::new(service))],
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external: Vec::new(),
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_t: PhantomData,
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}
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}
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/// Set server host name.
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///
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/// Host name is used by application router as a hostname for url
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/// generation. Check [ConnectionInfo](./dev/struct.ConnectionInfo.
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/// html#method.host) documentation for more information.
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///
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/// By default host name is set to a "localhost" value.
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pub fn hostname(mut self, val: &str) -> Self {
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self.config.host = val.to_owned();
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self
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}
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}
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/// Application router builder - Structure that follows the builder pattern
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/// for building application instances.
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pub struct AppRouter<C, P, B, T> {
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chain: C,
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endpoint: T,
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services: Vec<Box<ServiceFactory<P>>>,
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default: Option<Rc<HttpNewService<P>>>,
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factory_ref: Rc<RefCell<Option<AppRoutingFactory<P>>>>,
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data: Vec<Box<DataFactory>>,
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config: AppConfigInner,
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external: Vec<ResourceDef>,
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_t: PhantomData<(P, B)>,
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}
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impl<C, P, B, T> AppRouter<C, P, B, T>
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where
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P: 'static,
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B: MessageBody,
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T: NewService<
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Request = ServiceRequest<P>,
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Response = ServiceResponse<B>,
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Error = Error,
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InitError = (),
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>,
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{
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/// Configure route for a specific path.
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///
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/// This is a simplified version of the `App::service()` method.
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/// This method can not be could multiple times, in that case
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/// multiple resources with one route would be registered for same resource path.
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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 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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/// .route("/test1", web::get().to(index))
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/// .route("/test2", web::post().to(|| HttpResponse::MethodNotAllowed()));
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/// }
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/// ```
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pub fn route(self, path: &str, mut route: Route<P>) -> Self {
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self.service(
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Resource::new(path)
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.add_guards(route.take_guards())
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.route(route),
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)
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}
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/// Register http service.
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///
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/// Http service is any type that implements `HttpServiceFactory` trait.
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///
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/// Actix web provides several services implementations:
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///
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/// * *Resource* is an entry in resource table which corresponds to requested URL.
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/// * *Scope* is a set of resources with common root path.
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/// * "StaticFiles" is a service for static files support
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pub fn service<F>(mut self, factory: F) -> Self
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where
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F: HttpServiceFactory<P> + 'static,
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{
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self.services
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.push(Box::new(ServiceFactoryWrapper::new(factory)));
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self
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}
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/// Register a middleware.
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pub fn wrap<M, B1, F>(
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self,
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mw: F,
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) -> AppRouter<
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C,
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P,
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B1,
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impl NewService<
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Request = ServiceRequest<P>,
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Response = ServiceResponse<B1>,
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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<P>,
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Response = ServiceResponse<B1>,
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Error = Error,
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InitError = (),
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>,
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B1: MessageBody,
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F: IntoTransform<M, T::Service>,
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{
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let endpoint = ApplyTransform::new(mw, self.endpoint);
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AppRouter {
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endpoint,
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chain: self.chain,
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data: self.data,
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services: self.services,
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default: self.default,
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factory_ref: self.factory_ref,
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config: self.config,
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external: self.external,
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_t: PhantomData,
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}
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}
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/// Default resource to be used if no matching resource could be found.
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pub fn default_resource<F, U>(mut self, f: F) -> Self
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where
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F: FnOnce(Resource<P>) -> Resource<P, U>,
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U: NewService<
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Request = ServiceRequest<P>,
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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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// create and configure default resource
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self.default = Some(Rc::new(boxed::new_service(
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f(Resource::new("")).into_new_service().map_init_err(|_| ()),
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)));
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self
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}
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/// Register an external resource.
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///
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/// External resources are useful for URL generation purposes only
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/// and are never considered for matching at request time. Calls to
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/// `HttpRequest::url_for()` will work as expected.
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///
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/// ```rust
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/// use actix_web::{web, App, HttpRequest, HttpResponse, Result};
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///
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/// fn index(req: HttpRequest) -> Result<HttpResponse> {
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/// let url = req.url_for("youtube", &["asdlkjqme"])?;
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/// assert_eq!(url.as_str(), "https://youtube.com/watch/asdlkjqme");
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/// Ok(HttpResponse::Ok().into())
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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(web::resource("/index.html").route(
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/// web::get().to(index)))
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/// .external_resource("youtube", "https://youtube.com/watch/{video_id}");
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/// }
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/// ```
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pub fn external_resource<N, U>(mut self, name: N, url: U) -> Self
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where
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N: AsRef<str>,
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U: AsRef<str>,
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{
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let mut rdef = ResourceDef::new(url.as_ref());
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*rdef.name_mut() = name.as_ref().to_string();
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self.external.push(rdef);
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self
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}
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}
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impl<C, T, P: 'static, B: MessageBody> IntoNewService<AppInit<C, T, P, B>, ServerConfig>
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for AppRouter<C, P, B, T>
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where
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T: NewService<
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Request = ServiceRequest<P>,
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Response = ServiceResponse<B>,
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Error = Error,
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InitError = (),
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>,
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C: NewService<
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Request = ServiceRequest,
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Response = ServiceRequest<P>,
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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_new_service(self) -> AppInit<C, T, P, B> {
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AppInit {
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chain: self.chain,
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data: self.data,
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endpoint: self.endpoint,
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services: RefCell::new(self.services),
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external: RefCell::new(self.external),
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default: self.default,
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factory_ref: self.factory_ref,
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config: RefCell::new(AppConfig(Rc::new(self.config))),
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}
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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 actix_service::Service;
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use super::*;
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use crate::http::{Method, StatusCode};
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use crate::test::{block_on, init_service, TestRequest};
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use crate::{web, HttpResponse};
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#[test]
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fn test_default_resource() {
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let mut srv = init_service(
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App::new().service(web::resource("/test").to(|| HttpResponse::Ok())),
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);
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let req = TestRequest::with_uri("/test").to_request();
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let resp = block_on(srv.call(req)).unwrap();
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assert_eq!(resp.status(), StatusCode::OK);
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let req = TestRequest::with_uri("/blah").to_request();
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let resp = block_on(srv.call(req)).unwrap();
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assert_eq!(resp.status(), StatusCode::NOT_FOUND);
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let mut srv = init_service(
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App::new()
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.service(web::resource("/test").to(|| HttpResponse::Ok()))
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.service(
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web::resource("/test2")
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.default_resource(|r| r.to(|| HttpResponse::Created()))
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.route(web::get().to(|| HttpResponse::Ok())),
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)
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.default_resource(|r| r.to(|| HttpResponse::MethodNotAllowed())),
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);
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let req = TestRequest::with_uri("/blah").to_request();
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let resp = block_on(srv.call(req)).unwrap();
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assert_eq!(resp.status(), StatusCode::METHOD_NOT_ALLOWED);
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let req = TestRequest::with_uri("/test2").to_request();
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let resp = block_on(srv.call(req)).unwrap();
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assert_eq!(resp.status(), StatusCode::OK);
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let req = TestRequest::with_uri("/test2")
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.method(Method::POST)
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.to_request();
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let resp = block_on(srv.call(req)).unwrap();
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assert_eq!(resp.status(), StatusCode::CREATED);
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}
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#[test]
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fn test_data_factory() {
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let mut srv =
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init_service(App::new().data_factory(|| Ok::<_, ()>(10usize)).service(
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web::resource("/").to(|_: web::Data<usize>| HttpResponse::Ok()),
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));
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let req = TestRequest::default().to_request();
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let resp = block_on(srv.call(req)).unwrap();
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assert_eq!(resp.status(), StatusCode::OK);
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let mut srv =
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init_service(App::new().data_factory(|| Ok::<_, ()>(10u32)).service(
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web::resource("/").to(|_: web::Data<usize>| HttpResponse::Ok()),
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));
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let req = TestRequest::default().to_request();
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let resp = block_on(srv.call(req)).unwrap();
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assert_eq!(resp.status(), StatusCode::INTERNAL_SERVER_ERROR);
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}
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}
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