static_web_server/
service.rs

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1// SPDX-License-Identifier: MIT OR Apache-2.0
2// This file is part of Static Web Server.
3// See https://static-web-server.net/ for more information
4// Copyright (C) 2019-present Jose Quintana <joseluisq.net>
5
6//! The module provides a custom [Hyper service](hyper::service::Service).
7//!
8
9use hyper::{service::Service, Body, Request, Response};
10use std::convert::Infallible;
11use std::future::{ready, Future, Ready};
12use std::net::SocketAddr;
13use std::pin::Pin;
14use std::sync::Arc;
15use std::task::{Context, Poll};
16
17use crate::{handler::RequestHandler, transport::Transport, Error};
18
19/// It defines the router service which is the main entry point for Hyper Server.
20pub struct RouterService {
21    builder: RequestServiceBuilder,
22}
23
24impl RouterService {
25    /// Creates a new router service.
26    pub fn new(handler: RequestHandler) -> Self {
27        Self {
28            builder: RequestServiceBuilder::new(handler),
29        }
30    }
31}
32
33impl<T: Transport + Send + 'static> Service<&T> for RouterService {
34    type Response = RequestService;
35    type Error = Infallible;
36    type Future = Ready<Result<Self::Response, Self::Error>>;
37
38    fn poll_ready(&mut self, _: &mut Context<'_>) -> Poll<Result<(), Self::Error>> {
39        Poll::Ready(Ok(()))
40    }
41
42    fn call(&mut self, conn: &T) -> Self::Future {
43        ready(Ok(self.builder.build(conn.remote_addr())))
44    }
45}
46
47/// It defines a Hyper service request which delegates a request handler.
48pub struct RequestService {
49    handler: Arc<RequestHandler>,
50    remote_addr: Option<SocketAddr>,
51}
52
53impl Service<Request<Body>> for RequestService {
54    type Response = Response<Body>;
55    type Error = Error;
56    type Future = Pin<Box<dyn Future<Output = Result<Response<Body>, Error>> + Send + 'static>>;
57
58    fn poll_ready(&mut self, _: &mut Context<'_>) -> Poll<Result<(), Error>> {
59        Poll::Ready(Ok(()))
60    }
61
62    fn call(&mut self, mut req: Request<Body>) -> Self::Future {
63        let handler = self.handler.clone();
64        let remote_addr = self.remote_addr;
65        Box::pin(async move { handler.handle(&mut req, remote_addr).await })
66    }
67}
68
69/// It defines a Hyper service request builder.
70pub struct RequestServiceBuilder {
71    handler: Arc<RequestHandler>,
72}
73
74impl RequestServiceBuilder {
75    /// Initializes a new request service builder.
76    pub fn new(handler: RequestHandler) -> Self {
77        Self {
78            handler: Arc::new(handler),
79        }
80    }
81
82    /// Build a new request service.
83    pub fn build(&self, remote_addr: Option<SocketAddr>) -> RequestService {
84        RequestService {
85            handler: self.handler.clone(),
86            remote_addr,
87        }
88    }
89}
static_web_server/service.rs

static_web_server/
service.rs
