| <!DOCTYPE html><html lang="en"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><meta name="generator" content="rustdoc"><meta name="description" content="Source of the Rust file `/root/.cargo/registry/src/github.com-1ecc6299db9ec823/hyper-0.14.26/src/server/shutdown.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>shutdown.rs - source</title><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../SourceSerif4-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../FiraSans-Regular.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../FiraSans-Medium.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../SourceCodePro-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../SourceSerif4-Bold.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../SourceCodePro-Semibold.ttf.woff2"><link rel="stylesheet" href="../../../normalize.css"><link rel="stylesheet" href="../../../rustdoc.css" id="mainThemeStyle"><link rel="stylesheet" href="../../../ayu.css" disabled><link rel="stylesheet" href="../../../dark.css" disabled><link rel="stylesheet" href="../../../light.css" id="themeStyle"><script id="default-settings" ></script><script src="../../../storage.js"></script><script defer src="../../../source-script.js"></script><script defer src="../../../source-files.js"></script><script defer src="../../../main.js"></script><noscript><link rel="stylesheet" href="../../../noscript.css"></noscript><link rel="alternate icon" type="image/png" href="../../../favicon-16x16.png"><link rel="alternate icon" type="image/png" href="../../../favicon-32x32.png"><link rel="icon" type="image/svg+xml" href="../../../favicon.svg"></head><body class="rustdoc source"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="sidebar"><a class="sidebar-logo" href="../../../hyper/index.html"><div class="logo-container"><img class="rust-logo" src="../../../rust-logo.svg" alt="logo"></div></a></nav><main><div class="width-limiter"><nav class="sub"><a class="sub-logo-container" href="../../../hyper/index.html"><img class="rust-logo" src="../../../rust-logo.svg" alt="logo"></a><form class="search-form"><div class="search-container"><span></span><input class="search-input" name="search" autocomplete="off" spellcheck="false" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"><div id="help-button" title="help" tabindex="-1"><a href="../../../help.html">?</a></div><div id="settings-menu" tabindex="-1"><a href="../../../settings.html" title="settings"><img width="22" height="22" alt="Change settings" src="../../../wheel.svg"></a></div></div></form></nav><section id="main-content" class="content"><div class="example-wrap"><pre class="src-line-numbers"><span id="1">1</span> |
| <span id="2">2</span> |
| <span id="3">3</span> |
| <span id="4">4</span> |
| <span id="5">5</span> |
| <span id="6">6</span> |
| <span id="7">7</span> |
| <span id="8">8</span> |
| <span id="9">9</span> |
| <span id="10">10</span> |
| <span id="11">11</span> |
| <span id="12">12</span> |
| <span id="13">13</span> |
| <span id="14">14</span> |
| <span id="15">15</span> |
| <span id="16">16</span> |
| <span id="17">17</span> |
| <span id="18">18</span> |
| <span id="19">19</span> |
| <span id="20">20</span> |
| <span id="21">21</span> |
| <span id="22">22</span> |
| <span id="23">23</span> |
| <span id="24">24</span> |
| <span id="25">25</span> |
| <span id="26">26</span> |
| <span id="27">27</span> |
| <span id="28">28</span> |
| <span id="29">29</span> |
| <span id="30">30</span> |
| <span id="31">31</span> |
| <span id="32">32</span> |
| <span id="33">33</span> |
| <span id="34">34</span> |
| <span id="35">35</span> |
| <span id="36">36</span> |
| <span id="37">37</span> |
| <span id="38">38</span> |
| <span id="39">39</span> |
| <span id="40">40</span> |
| <span id="41">41</span> |
| <span id="42">42</span> |
| <span id="43">43</span> |
| <span id="44">44</span> |
| <span id="45">45</span> |
| <span id="46">46</span> |
| <span id="47">47</span> |
| <span id="48">48</span> |
| <span id="49">49</span> |
| <span id="50">50</span> |
| <span id="51">51</span> |
| <span id="52">52</span> |
| <span id="53">53</span> |
| <span id="54">54</span> |
| <span id="55">55</span> |
| <span id="56">56</span> |
| <span id="57">57</span> |
| <span id="58">58</span> |
| <span id="59">59</span> |
| <span id="60">60</span> |
| <span id="61">61</span> |
| <span id="62">62</span> |
| <span id="63">63</span> |
| <span id="64">64</span> |
| <span id="65">65</span> |
| <span id="66">66</span> |
| <span id="67">67</span> |
| <span id="68">68</span> |
| <span id="69">69</span> |
| <span id="70">70</span> |
| <span id="71">71</span> |
| <span id="72">72</span> |
| <span id="73">73</span> |
| <span id="74">74</span> |
| <span id="75">75</span> |
| <span id="76">76</span> |
| <span id="77">77</span> |
| <span id="78">78</span> |
| <span id="79">79</span> |
| <span id="80">80</span> |
| <span id="81">81</span> |
| <span id="82">82</span> |
| <span id="83">83</span> |
| <span id="84">84</span> |
| <span id="85">85</span> |
| <span id="86">86</span> |
| <span id="87">87</span> |
| <span id="88">88</span> |
| <span id="89">89</span> |
| <span id="90">90</span> |
| <span id="91">91</span> |
| <span id="92">92</span> |
| <span id="93">93</span> |
| <span id="94">94</span> |
| <span id="95">95</span> |
| <span id="96">96</span> |
| <span id="97">97</span> |
| <span id="98">98</span> |
| <span id="99">99</span> |
| <span id="100">100</span> |
| <span id="101">101</span> |
| <span id="102">102</span> |
| <span id="103">103</span> |
| <span id="104">104</span> |
| <span id="105">105</span> |
| <span id="106">106</span> |
| <span id="107">107</span> |
| <span id="108">108</span> |
| <span id="109">109</span> |
| <span id="110">110</span> |
| <span id="111">111</span> |
| <span id="112">112</span> |
| <span id="113">113</span> |
| <span id="114">114</span> |
| <span id="115">115</span> |
| <span id="116">116</span> |
| <span id="117">117</span> |
| <span id="118">118</span> |
| <span id="119">119</span> |
| <span id="120">120</span> |
| <span id="121">121</span> |
| <span id="122">122</span> |
| <span id="123">123</span> |
| <span id="124">124</span> |
| <span id="125">125</span> |
| <span id="126">126</span> |
| <span id="127">127</span> |
| <span id="128">128</span> |
| </pre><pre class="rust"><code><span class="kw">use </span>std::error::Error <span class="kw">as </span>StdError; |
| |
| <span class="kw">use </span>pin_project_lite::pin_project; |
| <span class="kw">use </span>tokio::io::{AsyncRead, AsyncWrite}; |
| <span class="kw">use </span>tracing::debug; |
| |
| <span class="kw">use </span><span class="kw">super</span>::accept::Accept; |
| <span class="kw">use </span><span class="kw">super</span>::conn::UpgradeableConnection; |
| <span class="kw">use </span><span class="kw">super</span>::server::{Server, Watcher}; |
| <span class="kw">use </span><span class="kw">crate</span>::body::{Body, HttpBody}; |
| <span class="kw">use </span><span class="kw">crate</span>::common::drain::{<span class="self">self</span>, Draining, Signal, Watch, Watching}; |
| <span class="kw">use </span><span class="kw">crate</span>::common::exec::{ConnStreamExec, NewSvcExec}; |
| <span class="kw">use </span><span class="kw">crate</span>::common::{task, Future, Pin, Poll, Unpin}; |
| <span class="kw">use </span><span class="kw">crate</span>::service::{HttpService, MakeServiceRef}; |
| |
| <span class="macro">pin_project! </span>{ |
| <span class="attribute">#[allow(missing_debug_implementations)] |
| </span><span class="kw">pub struct </span>Graceful<I, S, F, E> { |
| <span class="attribute">#[pin] |
| </span>state: State<I, S, F, E>, |
| } |
| } |
| |
| <span class="macro">pin_project! </span>{ |
| <span class="attribute">#[project = StateProj] |
| </span><span class="kw">pub</span>(<span class="kw">super</span>) <span class="kw">enum </span>State<I, S, F, E> { |
| Running { |
| drain: <span class="prelude-ty">Option</span><(Signal, Watch)>, |
| <span class="attribute">#[pin] |
| </span>server: Server<I, S, E>, |
| <span class="attribute">#[pin] |
| </span>signal: F, |
| }, |
| Draining { draining: Draining }, |
| } |
| } |
| |
| <span class="kw">impl</span><I, S, F, E> Graceful<I, S, F, E> { |
| <span class="kw">pub</span>(<span class="kw">super</span>) <span class="kw">fn </span>new(server: Server<I, S, E>, signal: F) -> <span class="self">Self </span>{ |
| <span class="kw">let </span>drain = <span class="prelude-val">Some</span>(drain::channel()); |
| Graceful { |
| state: State::Running { |
| drain, |
| server, |
| signal, |
| }, |
| } |
| } |
| } |
| |
| <span class="kw">impl</span><I, IO, IE, S, B, F, E> Future <span class="kw">for </span>Graceful<I, S, F, E> |
| <span class="kw">where |
| </span>I: Accept<Conn = IO, Error = IE>, |
| IE: Into<Box<<span class="kw">dyn </span>StdError + Send + Sync>>, |
| IO: AsyncRead + AsyncWrite + Unpin + Send + <span class="lifetime">'static</span>, |
| S: MakeServiceRef<IO, Body, ResBody = B>, |
| S::Error: Into<Box<<span class="kw">dyn </span>StdError + Send + Sync>>, |
| B: HttpBody + <span class="lifetime">'static</span>, |
| B::Error: Into<Box<<span class="kw">dyn </span>StdError + Send + Sync>>, |
| F: Future<Output = ()>, |
| E: ConnStreamExec<<S::Service <span class="kw">as </span>HttpService<Body>>::Future, B>, |
| E: NewSvcExec<IO, S::Future, S::Service, E, GracefulWatcher>, |
| { |
| <span class="kw">type </span>Output = <span class="kw">crate</span>::Result<()>; |
| |
| <span class="kw">fn </span>poll(<span class="self">self</span>: Pin<<span class="kw-2">&mut </span><span class="self">Self</span>>, cx: <span class="kw-2">&mut </span>task::Context<<span class="lifetime">'_</span>>) -> Poll<<span class="self">Self</span>::Output> { |
| <span class="kw">let </span><span class="kw-2">mut </span>me = <span class="self">self</span>.project(); |
| <span class="kw">loop </span>{ |
| <span class="kw">let </span>next = { |
| <span class="kw">match </span>me.state.as_mut().project() { |
| StateProj::Running { |
| drain, |
| server, |
| signal, |
| } => <span class="kw">match </span>signal.poll(cx) { |
| Poll::Ready(()) => { |
| <span class="macro">debug!</span>(<span class="string">"signal received, starting graceful shutdown"</span>); |
| <span class="kw">let </span>sig = drain.take().expect(<span class="string">"drain channel"</span>).<span class="number">0</span>; |
| State::Draining { |
| draining: sig.drain(), |
| } |
| } |
| Poll::Pending => { |
| <span class="kw">let </span>watch = drain.as_ref().expect(<span class="string">"drain channel"</span>).<span class="number">1</span>.clone(); |
| <span class="kw">return </span>server.poll_watch(cx, <span class="kw-2">&</span>GracefulWatcher(watch)); |
| } |
| }, |
| StateProj::Draining { <span class="kw-2">ref mut </span>draining } => { |
| <span class="kw">return </span>Pin::new(draining).poll(cx).map(<span class="prelude-val">Ok</span>); |
| } |
| } |
| }; |
| me.state.set(next); |
| } |
| } |
| } |
| |
| <span class="attribute">#[allow(missing_debug_implementations)] |
| #[derive(Clone)] |
| </span><span class="kw">pub struct </span>GracefulWatcher(Watch); |
| |
| <span class="kw">impl</span><I, S, E> Watcher<I, S, E> <span class="kw">for </span>GracefulWatcher |
| <span class="kw">where |
| </span>I: AsyncRead + AsyncWrite + Unpin + Send + <span class="lifetime">'static</span>, |
| S: HttpService<Body>, |
| E: ConnStreamExec<S::Future, S::ResBody>, |
| S::ResBody: <span class="lifetime">'static</span>, |
| <S::ResBody <span class="kw">as </span>HttpBody>::Error: Into<Box<<span class="kw">dyn </span>StdError + Send + Sync>>, |
| { |
| <span class="kw">type </span>Future = |
| Watching<UpgradeableConnection<I, S, E>, <span class="kw">fn</span>(Pin<<span class="kw-2">&mut </span>UpgradeableConnection<I, S, E>>)>; |
| |
| <span class="kw">fn </span>watch(<span class="kw-2">&</span><span class="self">self</span>, conn: UpgradeableConnection<I, S, E>) -> <span class="self">Self</span>::Future { |
| <span class="self">self</span>.<span class="number">0</span>.clone().watch(conn, on_drain) |
| } |
| } |
| |
| <span class="kw">fn </span>on_drain<I, S, E>(conn: Pin<<span class="kw-2">&mut </span>UpgradeableConnection<I, S, E>>) |
| <span class="kw">where |
| </span>S: HttpService<Body>, |
| S::Error: Into<Box<<span class="kw">dyn </span>StdError + Send + Sync>>, |
| I: AsyncRead + AsyncWrite + Unpin, |
| S::ResBody: HttpBody + <span class="lifetime">'static</span>, |
| <S::ResBody <span class="kw">as </span>HttpBody>::Error: Into<Box<<span class="kw">dyn </span>StdError + Send + Sync>>, |
| E: ConnStreamExec<S::Future, S::ResBody>, |
| { |
| conn.graceful_shutdown() |
| } |
| </code></pre></div> |
| </section></div></main><div id="rustdoc-vars" data-root-path="../../../" data-current-crate="hyper" data-themes="ayu,dark,light" data-resource-suffix="" data-rustdoc-version="1.66.0-nightly (5c8bff74b 2022-10-21)" ></div></body></html> |