docs(examples): update send_file example to async/await

2019-07-16 06:26:15 +08:00
parent 524a453b6f
commit e8c19fea4c
4 changed files with 83 additions and 80 deletions
--- a/examples_disabled/send_file.rs
+++ b/examples_disabled/send_file.rs
@@ -1,79 +0,0 @@
-#![deny(warnings)]
-extern crate futures;
-extern crate hyper;
-extern crate pretty_env_logger;
-extern crate tokio_fs;
-extern crate tokio_io;
-
-use futures::{future, Future};
-
-use hyper::{Body, Method, Request, Response, Server, StatusCode};
-use hyper::service::service_fn;
-
-use std::io;
-
-static NOTFOUND: &[u8] = b"Not Found";
-static INDEX: &str = "examples/send_file_index.html";
-
-
-fn main() {
-    pretty_env_logger::init();
-
-    let addr = "127.0.0.1:1337".parse().unwrap();
-
-    let server = Server::bind(&addr)
-        .serve(|| service_fn(response_examples))
-        .map_err(|e| eprintln!("server error: {}", e));
-
-    println!("Listening on http://{}", addr);
-
-    hyper::rt::run(server);
-}
-
-type ResponseFuture = Box<dyn Future<Item=Response<Body>, Error=io::Error> + Send>;
-
-fn response_examples(req: Request<Body>) -> ResponseFuture {
-    match (req.method(), req.uri().path()) {
-        (&Method::GET, "/") | (&Method::GET, "/index.html") | (&Method::GET, "/big_file.html") => {
-            simple_file_send(INDEX)
-        },
-        (&Method::GET, "/no_file.html") => {
-            // Test what happens when file cannot be be found
-            simple_file_send("this_file_should_not_exist.html")
-        },
-        _ => {
-            Box::new(future::ok(Response::builder()
-                                .status(StatusCode::NOT_FOUND)
-                                .body(Body::empty())
-                                .unwrap()))
-        }
-    }
-
-}
-
-fn simple_file_send(f: &str) -> ResponseFuture {
-    // Serve a file by asynchronously reading it entirely into memory.
-    // Uses tokio_fs to open file asynchronously, then tokio_io to read into
-    // memory asynchronously.
-    let filename = f.to_string(); // we need to copy for lifetime issues
-    Box::new(tokio_fs::file::File::open(filename)
-        .and_then(|file| {
-            let buf: Vec<u8> = Vec::new();
-            tokio_io::io::read_to_end(file, buf)
-                .and_then(|item| {
-                    Ok(Response::new(item.1.into()))
-                })
-                .or_else(|_| {
-                    Ok(Response::builder()
-                        .status(StatusCode::INTERNAL_SERVER_ERROR)
-                        .body(Body::empty())
-                        .unwrap())
-                })
-        })
-        .or_else(|_| {
-            Ok(Response::builder()
-                .status(StatusCode::NOT_FOUND)
-                .body(NOTFOUND.into())
-                .unwrap())
-        }))
-}
--- a/examples_disabled/send_file_index.html
+++ b/examples_disabled/send_file_index.html
@@ -1,11 +0,0 @@
-<html>
-  <head>
-    <title>Hyper responding example</title>
-  </head>
-  <body>
-    <h1>Hyper responding example</h1>
-    <a href="index.html">index.html</a> Top Level<br>
-    <a href="big_file.html">big_file.html</a> This page, streamed in chunks<br>
-    <a href="no_file.html">no_file.html</a> A 404 test, the requested file does not exist<br>
-  </body>
-</html>