static_web_server/
service.rs

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::{Request, Response, body::Incoming, service::Service};
10use std::future::Future;
11use std::net::SocketAddr;
12use std::pin::Pin;
13use std::sync::Arc;
14
15use crate::{Error, body, handler::RequestHandler};
16
17#[cfg(feature = "metrics")]
18use crate::metrics;
19
20/// It defines the router service which is the main entry point for Hyper Server.
21#[derive(Clone)]
22pub struct RouterService {
23    builder: RequestServiceBuilder,
24}
25
26impl RouterService {
27    /// Creates a new router service.
28    pub fn new(handler: RequestHandler) -> Self {
29        Self {
30            builder: RequestServiceBuilder::new(handler),
31        }
32    }
33
34    /// Build a new request service for an accepted connection.
35    pub fn build(&self, remote_addr: Option<SocketAddr>) -> RequestService {
36        self.builder.build(remote_addr)
37    }
38}
39
40/// It defines a Hyper service request which delegates a request handler.
41pub struct RequestService {
42    handler: Arc<RequestHandler>,
43    remote_addr: Option<SocketAddr>,
44}
45
46impl RequestService {
47    fn new(handler: Arc<RequestHandler>, remote_addr: Option<SocketAddr>) -> Self {
48        #[cfg(feature = "metrics")]
49        metrics::inc_connections();
50        Self {
51            handler,
52            remote_addr,
53        }
54    }
55}
56
57#[cfg(feature = "metrics")]
58impl Drop for RequestService {
59    fn drop(&mut self) {
60        metrics::dec_connections();
61    }
62}
63
64impl Service<Request<Incoming>> for RequestService {
65    type Response = Response<body::Body>;
66    type Error = Error;
67    type Future =
68        Pin<Box<dyn Future<Output = Result<Response<body::Body>, Error>> + Send + 'static>>;
69
70    fn call(&self, mut req: Request<Incoming>) -> Self::Future {
71        let handler = self.handler.clone();
72        let remote_addr = self.remote_addr;
73        Box::pin(async move { handler.handle(&mut req, remote_addr).await })
74    }
75}
76
77/// It defines a Hyper service request builder.
78#[derive(Clone)]
79pub struct RequestServiceBuilder {
80    handler: Arc<RequestHandler>,
81}
82
83impl RequestServiceBuilder {
84    /// Initializes a new request service builder.
85    pub fn new(handler: RequestHandler) -> Self {
86        Self {
87            handler: Arc::new(handler),
88        }
89    }
90
91    /// Build a new request service.
92    pub fn build(&self, remote_addr: Option<SocketAddr>) -> RequestService {
93        RequestService::new(self.handler.clone(), remote_addr)
94    }
95}
static_web_server/service.rs

static_web_server/
service.rs
