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<!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 to the Rust file `src/handler.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>handler.rs.html -- source</title><link rel="stylesheet" type="text/css" href="../../normalize.css"><link rel="stylesheet" type="text/css" href="../../rustdoc.css" id="mainThemeStyle"><link rel="stylesheet" type="text/css" href="../../dark.css"><link rel="stylesheet" type="text/css" href="../../light.css" id="themeStyle"><script src="../../storage.js"></script></head><body class="rustdoc source"><!--[if lte IE 8]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="sidebar"><div class="sidebar-menu">☰</div></nav><div class="theme-picker"><button id="theme-picker" aria-label="Pick another theme!"><img src="../../brush.svg" width="18" alt="Pick another theme!"></button><div id="theme-choices"></div></div><script src="../../theme.js"></script><nav class="sub"><form class="search-form js-only"><div class="search-container"><input class="search-input" name="search" autocomplete="off" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"><a id="settings-menu" href="../../settings.html"><img src="../../wheel.svg" width="18" alt="Change settings"></a></div></form></nav><section id="main" class="content"><pre class="line-numbers"><span id="1"> 1</span>
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
||
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|
||
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|
||
<span id="562">562</span>
|
||
</pre><pre class="rust ">
|
||
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">marker</span>::<span class="ident">PhantomData</span>;
|
||
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">ops</span>::<span class="ident">Deref</span>;
|
||
|
||
<span class="kw">use</span> <span class="ident">futures</span>::<span class="ident">future</span>::{<span class="ident">err</span>, <span class="ident">ok</span>, <span class="ident">Future</span>};
|
||
<span class="kw">use</span> <span class="ident">futures</span>::{<span class="ident">Async</span>, <span class="ident">Poll</span>};
|
||
|
||
<span class="kw">use</span> <span class="ident">error</span>::<span class="ident">Error</span>;
|
||
<span class="kw">use</span> <span class="ident">http</span>::<span class="ident">StatusCode</span>;
|
||
<span class="kw">use</span> <span class="ident">httprequest</span>::<span class="ident">HttpRequest</span>;
|
||
<span class="kw">use</span> <span class="ident">httpresponse</span>::<span class="ident">HttpResponse</span>;
|
||
<span class="kw">use</span> <span class="ident">resource</span>::<span class="ident">DefaultResource</span>;
|
||
|
||
<span class="doccomment">/// Trait defines object that could be registered as route handler</span>
|
||
<span class="attribute">#[<span class="ident">allow</span>(<span class="ident">unused_variables</span>)]</span>
|
||
<span class="kw">pub</span> <span class="kw">trait</span> <span class="ident">Handler</span><span class="op"><</span><span class="ident">S</span><span class="op">></span>: <span class="lifetime">'static</span> {
|
||
<span class="doccomment">/// The type of value that handler will return.</span>
|
||
<span class="kw">type</span> <span class="prelude-ty">Result</span>: <span class="ident">Responder</span>;
|
||
|
||
<span class="doccomment">/// Handle request</span>
|
||
<span class="kw">fn</span> <span class="ident">handle</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">req</span>: <span class="kw-2">&</span><span class="ident">HttpRequest</span><span class="op"><</span><span class="ident">S</span><span class="op">></span>) <span class="op">-></span> <span class="self">Self</span>::<span class="prelude-ty">Result</span>;
|
||
}
|
||
|
||
<span class="doccomment">/// Trait implemented by types that generate responses for clients.</span>
|
||
<span class="doccomment">///</span>
|
||
<span class="doccomment">/// Types that implement this trait can be used as the return type of a handler.</span>
|
||
<span class="kw">pub</span> <span class="kw">trait</span> <span class="ident">Responder</span> {
|
||
<span class="doccomment">/// The associated item which can be returned.</span>
|
||
<span class="kw">type</span> <span class="ident">Item</span>: <span class="ident">Into</span><span class="op"><</span><span class="ident">AsyncResult</span><span class="op"><</span><span class="ident">HttpResponse</span><span class="op">>></span>;
|
||
|
||
<span class="doccomment">/// The associated error which can be returned.</span>
|
||
<span class="kw">type</span> <span class="ident">Error</span>: <span class="ident">Into</span><span class="op"><</span><span class="ident">Error</span><span class="op">></span>;
|
||
|
||
<span class="doccomment">/// Convert itself to `AsyncResult` or `Error`.</span>
|
||
<span class="kw">fn</span> <span class="ident">respond_to</span><span class="op"><</span><span class="ident">S</span>: <span class="lifetime">'static</span><span class="op">></span>(
|
||
<span class="self">self</span>, <span class="ident">req</span>: <span class="kw-2">&</span><span class="ident">HttpRequest</span><span class="op"><</span><span class="ident">S</span><span class="op">></span>,
|
||
) <span class="op">-></span> <span class="prelude-ty">Result</span><span class="op"><</span><span class="self">Self</span>::<span class="ident">Item</span>, <span class="self">Self</span>::<span class="ident">Error</span><span class="op">></span>;
|
||
}
|
||
|
||
<span class="doccomment">/// Trait implemented by types that can be extracted from request.</span>
|
||
<span class="doccomment">///</span>
|
||
<span class="doccomment">/// Types that implement this trait can be used with `Route::with()` method.</span>
|
||
<span class="kw">pub</span> <span class="kw">trait</span> <span class="ident">FromRequest</span><span class="op"><</span><span class="ident">S</span><span class="op">></span>: <span class="ident">Sized</span> {
|
||
<span class="doccomment">/// Configuration for conversion process</span>
|
||
<span class="kw">type</span> <span class="ident">Config</span>: <span class="ident">Default</span>;
|
||
|
||
<span class="doccomment">/// Future that resolves to a Self</span>
|
||
<span class="kw">type</span> <span class="prelude-ty">Result</span>: <span class="ident">Into</span><span class="op"><</span><span class="ident">AsyncResult</span><span class="op"><</span><span class="self">Self</span><span class="op">>></span>;
|
||
|
||
<span class="doccomment">/// Convert request to a Self</span>
|
||
<span class="kw">fn</span> <span class="ident">from_request</span>(<span class="ident">req</span>: <span class="kw-2">&</span><span class="ident">HttpRequest</span><span class="op"><</span><span class="ident">S</span><span class="op">></span>, <span class="ident">cfg</span>: <span class="kw-2">&</span><span class="self">Self</span>::<span class="ident">Config</span>) <span class="op">-></span> <span class="self">Self</span>::<span class="prelude-ty">Result</span>;
|
||
|
||
<span class="doccomment">/// Convert request to a Self</span>
|
||
<span class="doccomment">///</span>
|
||
<span class="doccomment">/// This method uses default extractor configuration</span>
|
||
<span class="kw">fn</span> <span class="ident">extract</span>(<span class="ident">req</span>: <span class="kw-2">&</span><span class="ident">HttpRequest</span><span class="op"><</span><span class="ident">S</span><span class="op">></span>) <span class="op">-></span> <span class="self">Self</span>::<span class="prelude-ty">Result</span> {
|
||
<span class="self">Self</span>::<span class="ident">from_request</span>(<span class="ident">req</span>, <span class="kw-2">&</span><span class="self">Self</span>::<span class="ident">Config</span>::<span class="ident">default</span>())
|
||
}
|
||
}
|
||
|
||
<span class="doccomment">/// Combines two different responder types into a single type</span>
|
||
<span class="doccomment">///</span>
|
||
<span class="doccomment">/// ```rust</span>
|
||
<span class="doccomment">/// # extern crate actix_web;</span>
|
||
<span class="doccomment">/// # extern crate futures;</span>
|
||
<span class="doccomment">/// # use futures::future::Future;</span>
|
||
<span class="doccomment">/// use actix_web::{AsyncResponder, Either, Error, HttpRequest, HttpResponse};</span>
|
||
<span class="doccomment">/// use futures::future::result;</span>
|
||
<span class="doccomment">///</span>
|
||
<span class="doccomment">/// type RegisterResult =</span>
|
||
<span class="doccomment">/// Either<HttpResponse, Box<Future<Item = HttpResponse, Error = Error>>>;</span>
|
||
<span class="doccomment">///</span>
|
||
<span class="doccomment">/// fn index(req: HttpRequest) -> RegisterResult {</span>
|
||
<span class="doccomment">/// if is_a_variant() {</span>
|
||
<span class="doccomment">/// // <- choose variant A</span>
|
||
<span class="doccomment">/// Either::A(HttpResponse::BadRequest().body("Bad data"))</span>
|
||
<span class="doccomment">/// } else {</span>
|
||
<span class="doccomment">/// Either::B(</span>
|
||
<span class="doccomment">/// // <- variant B</span>
|
||
<span class="doccomment">/// result(Ok(HttpResponse::Ok()</span>
|
||
<span class="doccomment">/// .content_type("text/html")</span>
|
||
<span class="doccomment">/// .body("Hello!")))</span>
|
||
<span class="doccomment">/// .responder(),</span>
|
||
<span class="doccomment">/// )</span>
|
||
<span class="doccomment">/// }</span>
|
||
<span class="doccomment">/// }</span>
|
||
<span class="doccomment">/// # fn is_a_variant() -> bool { true }</span>
|
||
<span class="doccomment">/// # fn main() {}</span>
|
||
<span class="doccomment">/// ```</span>
|
||
<span class="attribute">#[<span class="ident">derive</span>(<span class="ident">Debug</span>)]</span>
|
||
<span class="kw">pub</span> <span class="kw">enum</span> <span class="ident">Either</span><span class="op"><</span><span class="ident">A</span>, <span class="ident">B</span><span class="op">></span> {
|
||
<span class="doccomment">/// First branch of the type</span>
|
||
<span class="ident">A</span>(<span class="ident">A</span>),
|
||
<span class="doccomment">/// Second branch of the type</span>
|
||
<span class="ident">B</span>(<span class="ident">B</span>),
|
||
}
|
||
|
||
<span class="kw">impl</span><span class="op"><</span><span class="ident">A</span>, <span class="ident">B</span><span class="op">></span> <span class="ident">Responder</span> <span class="kw">for</span> <span class="ident">Either</span><span class="op"><</span><span class="ident">A</span>, <span class="ident">B</span><span class="op">></span>
|
||
<span class="kw">where</span>
|
||
<span class="ident">A</span>: <span class="ident">Responder</span>,
|
||
<span class="ident">B</span>: <span class="ident">Responder</span>,
|
||
{
|
||
<span class="kw">type</span> <span class="ident">Item</span> <span class="op">=</span> <span class="ident">AsyncResult</span><span class="op"><</span><span class="ident">HttpResponse</span><span class="op">></span>;
|
||
<span class="kw">type</span> <span class="ident">Error</span> <span class="op">=</span> <span class="ident">Error</span>;
|
||
|
||
<span class="kw">fn</span> <span class="ident">respond_to</span><span class="op"><</span><span class="ident">S</span>: <span class="lifetime">'static</span><span class="op">></span>(
|
||
<span class="self">self</span>, <span class="ident">req</span>: <span class="kw-2">&</span><span class="ident">HttpRequest</span><span class="op"><</span><span class="ident">S</span><span class="op">></span>,
|
||
) <span class="op">-></span> <span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">AsyncResult</span><span class="op"><</span><span class="ident">HttpResponse</span><span class="op">></span>, <span class="ident">Error</span><span class="op">></span> {
|
||
<span class="kw">match</span> <span class="self">self</span> {
|
||
<span class="ident">Either</span>::<span class="ident">A</span>(<span class="ident">a</span>) <span class="op">=></span> <span class="kw">match</span> <span class="ident">a</span>.<span class="ident">respond_to</span>(<span class="ident">req</span>) {
|
||
<span class="prelude-val">Ok</span>(<span class="ident">val</span>) <span class="op">=></span> <span class="prelude-val">Ok</span>(<span class="ident">val</span>.<span class="ident">into</span>()),
|
||
<span class="prelude-val">Err</span>(<span class="ident">err</span>) <span class="op">=></span> <span class="prelude-val">Err</span>(<span class="ident">err</span>.<span class="ident">into</span>()),
|
||
},
|
||
<span class="ident">Either</span>::<span class="ident">B</span>(<span class="ident">b</span>) <span class="op">=></span> <span class="kw">match</span> <span class="ident">b</span>.<span class="ident">respond_to</span>(<span class="ident">req</span>) {
|
||
<span class="prelude-val">Ok</span>(<span class="ident">val</span>) <span class="op">=></span> <span class="prelude-val">Ok</span>(<span class="ident">val</span>.<span class="ident">into</span>()),
|
||
<span class="prelude-val">Err</span>(<span class="ident">err</span>) <span class="op">=></span> <span class="prelude-val">Err</span>(<span class="ident">err</span>.<span class="ident">into</span>()),
|
||
},
|
||
}
|
||
}
|
||
}
|
||
|
||
<span class="kw">impl</span><span class="op"><</span><span class="ident">A</span>, <span class="ident">B</span>, <span class="ident">I</span>, <span class="ident">E</span><span class="op">></span> <span class="ident">Future</span> <span class="kw">for</span> <span class="ident">Either</span><span class="op"><</span><span class="ident">A</span>, <span class="ident">B</span><span class="op">></span>
|
||
<span class="kw">where</span>
|
||
<span class="ident">A</span>: <span class="ident">Future</span><span class="op"><</span><span class="ident">Item</span> <span class="op">=</span> <span class="ident">I</span>, <span class="ident">Error</span> <span class="op">=</span> <span class="ident">E</span><span class="op">></span>,
|
||
<span class="ident">B</span>: <span class="ident">Future</span><span class="op"><</span><span class="ident">Item</span> <span class="op">=</span> <span class="ident">I</span>, <span class="ident">Error</span> <span class="op">=</span> <span class="ident">E</span><span class="op">></span>,
|
||
{
|
||
<span class="kw">type</span> <span class="ident">Item</span> <span class="op">=</span> <span class="ident">I</span>;
|
||
<span class="kw">type</span> <span class="ident">Error</span> <span class="op">=</span> <span class="ident">E</span>;
|
||
|
||
<span class="kw">fn</span> <span class="ident">poll</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>) <span class="op">-></span> <span class="ident">Poll</span><span class="op"><</span><span class="ident">I</span>, <span class="ident">E</span><span class="op">></span> {
|
||
<span class="kw">match</span> <span class="kw-2">*</span><span class="self">self</span> {
|
||
<span class="ident">Either</span>::<span class="ident">A</span>(<span class="kw-2">ref</span> <span class="kw-2">mut</span> <span class="ident">fut</span>) <span class="op">=></span> <span class="ident">fut</span>.<span class="ident">poll</span>(),
|
||
<span class="ident">Either</span>::<span class="ident">B</span>(<span class="kw-2">ref</span> <span class="kw-2">mut</span> <span class="ident">fut</span>) <span class="op">=></span> <span class="ident">fut</span>.<span class="ident">poll</span>(),
|
||
}
|
||
}
|
||
}
|
||
|
||
<span class="kw">impl</span><span class="op"><</span><span class="ident">T</span><span class="op">></span> <span class="ident">Responder</span> <span class="kw">for</span> <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">T</span><span class="op">></span>
|
||
<span class="kw">where</span>
|
||
<span class="ident">T</span>: <span class="ident">Responder</span>,
|
||
{
|
||
<span class="kw">type</span> <span class="ident">Item</span> <span class="op">=</span> <span class="ident">AsyncResult</span><span class="op"><</span><span class="ident">HttpResponse</span><span class="op">></span>;
|
||
<span class="kw">type</span> <span class="ident">Error</span> <span class="op">=</span> <span class="ident">Error</span>;
|
||
|
||
<span class="kw">fn</span> <span class="ident">respond_to</span><span class="op"><</span><span class="ident">S</span>: <span class="lifetime">'static</span><span class="op">></span>(
|
||
<span class="self">self</span>, <span class="ident">req</span>: <span class="kw-2">&</span><span class="ident">HttpRequest</span><span class="op"><</span><span class="ident">S</span><span class="op">></span>,
|
||
) <span class="op">-></span> <span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">AsyncResult</span><span class="op"><</span><span class="ident">HttpResponse</span><span class="op">></span>, <span class="ident">Error</span><span class="op">></span> {
|
||
<span class="kw">match</span> <span class="self">self</span> {
|
||
<span class="prelude-val">Some</span>(<span class="ident">t</span>) <span class="op">=></span> <span class="kw">match</span> <span class="ident">t</span>.<span class="ident">respond_to</span>(<span class="ident">req</span>) {
|
||
<span class="prelude-val">Ok</span>(<span class="ident">val</span>) <span class="op">=></span> <span class="prelude-val">Ok</span>(<span class="ident">val</span>.<span class="ident">into</span>()),
|
||
<span class="prelude-val">Err</span>(<span class="ident">err</span>) <span class="op">=></span> <span class="prelude-val">Err</span>(<span class="ident">err</span>.<span class="ident">into</span>()),
|
||
},
|
||
<span class="prelude-val">None</span> <span class="op">=></span> <span class="prelude-val">Ok</span>(<span class="ident">req</span>.<span class="ident">build_response</span>(<span class="ident">StatusCode</span>::<span class="ident">NOT_FOUND</span>).<span class="ident">finish</span>().<span class="ident">into</span>()),
|
||
}
|
||
}
|
||
}
|
||
|
||
<span class="doccomment">/// Convenience trait that converts `Future` object to a `Boxed` future</span>
|
||
<span class="doccomment">///</span>
|
||
<span class="doccomment">/// For example loading json from request's body is async operation.</span>
|
||
<span class="doccomment">///</span>
|
||
<span class="doccomment">/// ```rust</span>
|
||
<span class="doccomment">/// # extern crate actix_web;</span>
|
||
<span class="doccomment">/// # extern crate futures;</span>
|
||
<span class="doccomment">/// # #[macro_use] extern crate serde_derive;</span>
|
||
<span class="doccomment">/// use actix_web::{</span>
|
||
<span class="doccomment">/// App, AsyncResponder, Error, HttpMessage, HttpRequest, HttpResponse,</span>
|
||
<span class="doccomment">/// };</span>
|
||
<span class="doccomment">/// use futures::future::Future;</span>
|
||
<span class="doccomment">///</span>
|
||
<span class="doccomment">/// #[derive(Deserialize, Debug)]</span>
|
||
<span class="doccomment">/// struct MyObj {</span>
|
||
<span class="doccomment">/// name: String,</span>
|
||
<span class="doccomment">/// }</span>
|
||
<span class="doccomment">///</span>
|
||
<span class="doccomment">/// fn index(mut req: HttpRequest) -> Box<Future<Item = HttpResponse, Error = Error>> {</span>
|
||
<span class="doccomment">/// req.json() // <- get JsonBody future</span>
|
||
<span class="doccomment">/// .from_err()</span>
|
||
<span class="doccomment">/// .and_then(|val: MyObj| { // <- deserialized value</span>
|
||
<span class="doccomment">/// Ok(HttpResponse::Ok().into())</span>
|
||
<span class="doccomment">/// })</span>
|
||
<span class="doccomment">/// // Construct boxed future by using `AsyncResponder::responder()` method</span>
|
||
<span class="doccomment">/// .responder()</span>
|
||
<span class="doccomment">/// }</span>
|
||
<span class="doccomment">/// # fn main() {}</span>
|
||
<span class="doccomment">/// ```</span>
|
||
<span class="kw">pub</span> <span class="kw">trait</span> <span class="ident">AsyncResponder</span><span class="op"><</span><span class="ident">I</span>, <span class="ident">E</span><span class="op">></span>: <span class="ident">Sized</span> {
|
||
<span class="doccomment">/// Convert to a boxed future</span>
|
||
<span class="kw">fn</span> <span class="ident">responder</span>(<span class="self">self</span>) <span class="op">-></span> <span class="ident">Box</span><span class="op"><</span><span class="ident">Future</span><span class="op"><</span><span class="ident">Item</span> <span class="op">=</span> <span class="ident">I</span>, <span class="ident">Error</span> <span class="op">=</span> <span class="ident">E</span><span class="op">>></span>;
|
||
}
|
||
|
||
<span class="kw">impl</span><span class="op"><</span><span class="ident">F</span>, <span class="ident">I</span>, <span class="ident">E</span><span class="op">></span> <span class="ident">AsyncResponder</span><span class="op"><</span><span class="ident">I</span>, <span class="ident">E</span><span class="op">></span> <span class="kw">for</span> <span class="ident">F</span>
|
||
<span class="kw">where</span>
|
||
<span class="ident">F</span>: <span class="ident">Future</span><span class="op"><</span><span class="ident">Item</span> <span class="op">=</span> <span class="ident">I</span>, <span class="ident">Error</span> <span class="op">=</span> <span class="ident">E</span><span class="op">></span> <span class="op">+</span> <span class="lifetime">'static</span>,
|
||
<span class="ident">I</span>: <span class="ident">Responder</span> <span class="op">+</span> <span class="lifetime">'static</span>,
|
||
<span class="ident">E</span>: <span class="ident">Into</span><span class="op"><</span><span class="ident">Error</span><span class="op">></span> <span class="op">+</span> <span class="lifetime">'static</span>,
|
||
{
|
||
<span class="kw">fn</span> <span class="ident">responder</span>(<span class="self">self</span>) <span class="op">-></span> <span class="ident">Box</span><span class="op"><</span><span class="ident">Future</span><span class="op"><</span><span class="ident">Item</span> <span class="op">=</span> <span class="ident">I</span>, <span class="ident">Error</span> <span class="op">=</span> <span class="ident">E</span><span class="op">>></span> {
|
||
<span class="ident">Box</span>::<span class="ident">new</span>(<span class="self">self</span>)
|
||
}
|
||
}
|
||
|
||
<span class="doccomment">/// Handler<S> for Fn()</span>
|
||
<span class="kw">impl</span><span class="op"><</span><span class="ident">F</span>, <span class="ident">R</span>, <span class="ident">S</span><span class="op">></span> <span class="ident">Handler</span><span class="op"><</span><span class="ident">S</span><span class="op">></span> <span class="kw">for</span> <span class="ident">F</span>
|
||
<span class="kw">where</span>
|
||
<span class="ident">F</span>: <span class="ident">Fn</span>(<span class="kw-2">&</span><span class="ident">HttpRequest</span><span class="op"><</span><span class="ident">S</span><span class="op">></span>) <span class="op">-></span> <span class="ident">R</span> <span class="op">+</span> <span class="lifetime">'static</span>,
|
||
<span class="ident">R</span>: <span class="ident">Responder</span> <span class="op">+</span> <span class="lifetime">'static</span>,
|
||
{
|
||
<span class="kw">type</span> <span class="prelude-ty">Result</span> <span class="op">=</span> <span class="ident">R</span>;
|
||
|
||
<span class="kw">fn</span> <span class="ident">handle</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">req</span>: <span class="kw-2">&</span><span class="ident">HttpRequest</span><span class="op"><</span><span class="ident">S</span><span class="op">></span>) <span class="op">-></span> <span class="ident">R</span> {
|
||
(<span class="self">self</span>)(<span class="ident">req</span>)
|
||
}
|
||
}
|
||
|
||
<span class="doccomment">/// Represents async result</span>
|
||
<span class="doccomment">///</span>
|
||
<span class="doccomment">/// Result could be in tree different forms.</span>
|
||
<span class="doccomment">/// * Ok(T) - ready item</span>
|
||
<span class="doccomment">/// * Err(E) - error happen during reply process</span>
|
||
<span class="doccomment">/// * Future<T, E> - reply process completes in the future</span>
|
||
<span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">AsyncResult</span><span class="op"><</span><span class="ident">I</span>, <span class="ident">E</span> <span class="op">=</span> <span class="ident">Error</span><span class="op">></span>(<span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">AsyncResultItem</span><span class="op"><</span><span class="ident">I</span>, <span class="ident">E</span><span class="op">>></span>);
|
||
|
||
<span class="kw">impl</span><span class="op"><</span><span class="ident">I</span>, <span class="ident">E</span><span class="op">></span> <span class="ident">Future</span> <span class="kw">for</span> <span class="ident">AsyncResult</span><span class="op"><</span><span class="ident">I</span>, <span class="ident">E</span><span class="op">></span> {
|
||
<span class="kw">type</span> <span class="ident">Item</span> <span class="op">=</span> <span class="ident">I</span>;
|
||
<span class="kw">type</span> <span class="ident">Error</span> <span class="op">=</span> <span class="ident">E</span>;
|
||
|
||
<span class="kw">fn</span> <span class="ident">poll</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>) <span class="op">-></span> <span class="ident">Poll</span><span class="op"><</span><span class="ident">I</span>, <span class="ident">E</span><span class="op">></span> {
|
||
<span class="kw">let</span> <span class="ident">res</span> <span class="op">=</span> <span class="self">self</span>.<span class="number">0</span>.<span class="ident">take</span>().<span class="ident">expect</span>(<span class="string">"use after resolve"</span>);
|
||
<span class="kw">match</span> <span class="ident">res</span> {
|
||
<span class="ident">AsyncResultItem</span>::<span class="prelude-val">Ok</span>(<span class="ident">msg</span>) <span class="op">=></span> <span class="prelude-val">Ok</span>(<span class="ident">Async</span>::<span class="ident">Ready</span>(<span class="ident">msg</span>)),
|
||
<span class="ident">AsyncResultItem</span>::<span class="prelude-val">Err</span>(<span class="ident">err</span>) <span class="op">=></span> <span class="prelude-val">Err</span>(<span class="ident">err</span>),
|
||
<span class="ident">AsyncResultItem</span>::<span class="ident">Future</span>(<span class="kw-2">mut</span> <span class="ident">fut</span>) <span class="op">=></span> <span class="kw">match</span> <span class="ident">fut</span>.<span class="ident">poll</span>() {
|
||
<span class="prelude-val">Ok</span>(<span class="ident">Async</span>::<span class="ident">NotReady</span>) <span class="op">=></span> {
|
||
<span class="self">self</span>.<span class="number">0</span> <span class="op">=</span> <span class="prelude-val">Some</span>(<span class="ident">AsyncResultItem</span>::<span class="ident">Future</span>(<span class="ident">fut</span>));
|
||
<span class="prelude-val">Ok</span>(<span class="ident">Async</span>::<span class="ident">NotReady</span>)
|
||
}
|
||
<span class="prelude-val">Ok</span>(<span class="ident">Async</span>::<span class="ident">Ready</span>(<span class="ident">msg</span>)) <span class="op">=></span> <span class="prelude-val">Ok</span>(<span class="ident">Async</span>::<span class="ident">Ready</span>(<span class="ident">msg</span>)),
|
||
<span class="prelude-val">Err</span>(<span class="ident">err</span>) <span class="op">=></span> <span class="prelude-val">Err</span>(<span class="ident">err</span>),
|
||
},
|
||
}
|
||
}
|
||
}
|
||
|
||
<span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">enum</span> <span class="ident">AsyncResultItem</span><span class="op"><</span><span class="ident">I</span>, <span class="ident">E</span><span class="op">></span> {
|
||
<span class="prelude-val">Ok</span>(<span class="ident">I</span>),
|
||
<span class="prelude-val">Err</span>(<span class="ident">E</span>),
|
||
<span class="ident">Future</span>(<span class="ident">Box</span><span class="op"><</span><span class="ident">Future</span><span class="op"><</span><span class="ident">Item</span> <span class="op">=</span> <span class="ident">I</span>, <span class="ident">Error</span> <span class="op">=</span> <span class="ident">E</span><span class="op">>></span>),
|
||
}
|
||
|
||
<span class="kw">impl</span><span class="op"><</span><span class="ident">I</span>, <span class="ident">E</span><span class="op">></span> <span class="ident">AsyncResult</span><span class="op"><</span><span class="ident">I</span>, <span class="ident">E</span><span class="op">></span> {
|
||
<span class="doccomment">/// Create async response</span>
|
||
<span class="attribute">#[<span class="ident">inline</span>]</span>
|
||
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">async</span>(<span class="ident">fut</span>: <span class="ident">Box</span><span class="op"><</span><span class="ident">Future</span><span class="op"><</span><span class="ident">Item</span> <span class="op">=</span> <span class="ident">I</span>, <span class="ident">Error</span> <span class="op">=</span> <span class="ident">E</span><span class="op">>></span>) <span class="op">-></span> <span class="ident">AsyncResult</span><span class="op"><</span><span class="ident">I</span>, <span class="ident">E</span><span class="op">></span> {
|
||
<span class="ident">AsyncResult</span>(<span class="prelude-val">Some</span>(<span class="ident">AsyncResultItem</span>::<span class="ident">Future</span>(<span class="ident">fut</span>)))
|
||
}
|
||
|
||
<span class="doccomment">/// Send response</span>
|
||
<span class="attribute">#[<span class="ident">inline</span>]</span>
|
||
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">ok</span><span class="op"><</span><span class="ident">R</span>: <span class="ident">Into</span><span class="op"><</span><span class="ident">I</span><span class="op">>></span>(<span class="ident">ok</span>: <span class="ident">R</span>) <span class="op">-></span> <span class="ident">AsyncResult</span><span class="op"><</span><span class="ident">I</span>, <span class="ident">E</span><span class="op">></span> {
|
||
<span class="ident">AsyncResult</span>(<span class="prelude-val">Some</span>(<span class="ident">AsyncResultItem</span>::<span class="prelude-val">Ok</span>(<span class="ident">ok</span>.<span class="ident">into</span>())))
|
||
}
|
||
|
||
<span class="doccomment">/// Send error</span>
|
||
<span class="attribute">#[<span class="ident">inline</span>]</span>
|
||
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">err</span><span class="op"><</span><span class="ident">R</span>: <span class="ident">Into</span><span class="op"><</span><span class="ident">E</span><span class="op">>></span>(<span class="ident">err</span>: <span class="ident">R</span>) <span class="op">-></span> <span class="ident">AsyncResult</span><span class="op"><</span><span class="ident">I</span>, <span class="ident">E</span><span class="op">></span> {
|
||
<span class="ident">AsyncResult</span>(<span class="prelude-val">Some</span>(<span class="ident">AsyncResultItem</span>::<span class="prelude-val">Err</span>(<span class="ident">err</span>.<span class="ident">into</span>())))
|
||
}
|
||
|
||
<span class="attribute">#[<span class="ident">inline</span>]</span>
|
||
<span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn</span> <span class="ident">into</span>(<span class="self">self</span>) <span class="op">-></span> <span class="ident">AsyncResultItem</span><span class="op"><</span><span class="ident">I</span>, <span class="ident">E</span><span class="op">></span> {
|
||
<span class="self">self</span>.<span class="number">0</span>.<span class="ident">expect</span>(<span class="string">"use after resolve"</span>)
|
||
}
|
||
|
||
<span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">test</span>)]</span>
|
||
<span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn</span> <span class="ident">as_msg</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-></span> <span class="kw-2">&</span><span class="ident">I</span> {
|
||
<span class="kw">match</span> <span class="self">self</span>.<span class="number">0</span>.<span class="ident">as_ref</span>().<span class="ident">unwrap</span>() {
|
||
<span class="kw-2">&</span><span class="ident">AsyncResultItem</span>::<span class="prelude-val">Ok</span>(<span class="kw-2">ref</span> <span class="ident">resp</span>) <span class="op">=></span> <span class="ident">resp</span>,
|
||
<span class="kw">_</span> <span class="op">=></span> <span class="macro">panic</span><span class="macro">!</span>(),
|
||
}
|
||
}
|
||
|
||
<span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">test</span>)]</span>
|
||
<span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn</span> <span class="ident">as_err</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-></span> <span class="prelude-ty">Option</span><span class="op"><</span><span class="kw-2">&</span><span class="ident">E</span><span class="op">></span> {
|
||
<span class="kw">match</span> <span class="self">self</span>.<span class="number">0</span>.<span class="ident">as_ref</span>().<span class="ident">unwrap</span>() {
|
||
<span class="kw-2">&</span><span class="ident">AsyncResultItem</span>::<span class="prelude-val">Err</span>(<span class="kw-2">ref</span> <span class="ident">err</span>) <span class="op">=></span> <span class="prelude-val">Some</span>(<span class="ident">err</span>),
|
||
<span class="kw">_</span> <span class="op">=></span> <span class="prelude-val">None</span>,
|
||
}
|
||
}
|
||
}
|
||
|
||
<span class="kw">impl</span> <span class="ident">Responder</span> <span class="kw">for</span> <span class="ident">AsyncResult</span><span class="op"><</span><span class="ident">HttpResponse</span><span class="op">></span> {
|
||
<span class="kw">type</span> <span class="ident">Item</span> <span class="op">=</span> <span class="ident">AsyncResult</span><span class="op"><</span><span class="ident">HttpResponse</span><span class="op">></span>;
|
||
<span class="kw">type</span> <span class="ident">Error</span> <span class="op">=</span> <span class="ident">Error</span>;
|
||
|
||
<span class="kw">fn</span> <span class="ident">respond_to</span><span class="op"><</span><span class="ident">S</span><span class="op">></span>(
|
||
<span class="self">self</span>, <span class="kw">_</span>: <span class="kw-2">&</span><span class="ident">HttpRequest</span><span class="op"><</span><span class="ident">S</span><span class="op">></span>,
|
||
) <span class="op">-></span> <span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">AsyncResult</span><span class="op"><</span><span class="ident">HttpResponse</span><span class="op">></span>, <span class="ident">Error</span><span class="op">></span> {
|
||
<span class="prelude-val">Ok</span>(<span class="self">self</span>)
|
||
}
|
||
}
|
||
|
||
<span class="kw">impl</span> <span class="ident">Responder</span> <span class="kw">for</span> <span class="ident">HttpResponse</span> {
|
||
<span class="kw">type</span> <span class="ident">Item</span> <span class="op">=</span> <span class="ident">AsyncResult</span><span class="op"><</span><span class="ident">HttpResponse</span><span class="op">></span>;
|
||
<span class="kw">type</span> <span class="ident">Error</span> <span class="op">=</span> <span class="ident">Error</span>;
|
||
|
||
<span class="attribute">#[<span class="ident">inline</span>]</span>
|
||
<span class="kw">fn</span> <span class="ident">respond_to</span><span class="op"><</span><span class="ident">S</span><span class="op">></span>(
|
||
<span class="self">self</span>, <span class="kw">_</span>: <span class="kw-2">&</span><span class="ident">HttpRequest</span><span class="op"><</span><span class="ident">S</span><span class="op">></span>,
|
||
) <span class="op">-></span> <span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">AsyncResult</span><span class="op"><</span><span class="ident">HttpResponse</span><span class="op">></span>, <span class="ident">Error</span><span class="op">></span> {
|
||
<span class="prelude-val">Ok</span>(<span class="ident">AsyncResult</span>(<span class="prelude-val">Some</span>(<span class="ident">AsyncResultItem</span>::<span class="prelude-val">Ok</span>(<span class="self">self</span>))))
|
||
}
|
||
}
|
||
|
||
<span class="kw">impl</span><span class="op"><</span><span class="ident">T</span><span class="op">></span> <span class="ident">From</span><span class="op"><</span><span class="ident">T</span><span class="op">></span> <span class="kw">for</span> <span class="ident">AsyncResult</span><span class="op"><</span><span class="ident">T</span><span class="op">></span> {
|
||
<span class="attribute">#[<span class="ident">inline</span>]</span>
|
||
<span class="kw">fn</span> <span class="ident">from</span>(<span class="ident">resp</span>: <span class="ident">T</span>) <span class="op">-></span> <span class="ident">AsyncResult</span><span class="op"><</span><span class="ident">T</span><span class="op">></span> {
|
||
<span class="ident">AsyncResult</span>(<span class="prelude-val">Some</span>(<span class="ident">AsyncResultItem</span>::<span class="prelude-val">Ok</span>(<span class="ident">resp</span>)))
|
||
}
|
||
}
|
||
|
||
<span class="kw">impl</span><span class="op"><</span><span class="ident">T</span>: <span class="ident">Responder</span>, <span class="ident">E</span>: <span class="ident">Into</span><span class="op"><</span><span class="ident">Error</span><span class="op">>></span> <span class="ident">Responder</span> <span class="kw">for</span> <span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">T</span>, <span class="ident">E</span><span class="op">></span> {
|
||
<span class="kw">type</span> <span class="ident">Item</span> <span class="op">=</span> <span class="op"><</span><span class="ident">T</span> <span class="kw">as</span> <span class="ident">Responder</span><span class="op">></span>::<span class="ident">Item</span>;
|
||
<span class="kw">type</span> <span class="ident">Error</span> <span class="op">=</span> <span class="ident">Error</span>;
|
||
|
||
<span class="kw">fn</span> <span class="ident">respond_to</span><span class="op"><</span><span class="ident">S</span>: <span class="lifetime">'static</span><span class="op">></span>(<span class="self">self</span>, <span class="ident">req</span>: <span class="kw-2">&</span><span class="ident">HttpRequest</span><span class="op"><</span><span class="ident">S</span><span class="op">></span>) <span class="op">-></span> <span class="prelude-ty">Result</span><span class="op"><</span><span class="self">Self</span>::<span class="ident">Item</span>, <span class="ident">Error</span><span class="op">></span> {
|
||
<span class="kw">match</span> <span class="self">self</span> {
|
||
<span class="prelude-val">Ok</span>(<span class="ident">val</span>) <span class="op">=></span> <span class="kw">match</span> <span class="ident">val</span>.<span class="ident">respond_to</span>(<span class="ident">req</span>) {
|
||
<span class="prelude-val">Ok</span>(<span class="ident">val</span>) <span class="op">=></span> <span class="prelude-val">Ok</span>(<span class="ident">val</span>),
|
||
<span class="prelude-val">Err</span>(<span class="ident">err</span>) <span class="op">=></span> <span class="prelude-val">Err</span>(<span class="ident">err</span>.<span class="ident">into</span>()),
|
||
},
|
||
<span class="prelude-val">Err</span>(<span class="ident">err</span>) <span class="op">=></span> <span class="prelude-val">Err</span>(<span class="ident">err</span>.<span class="ident">into</span>()),
|
||
}
|
||
}
|
||
}
|
||
|
||
<span class="kw">impl</span><span class="op"><</span><span class="ident">T</span>, <span class="ident">E</span>: <span class="ident">Into</span><span class="op"><</span><span class="ident">Error</span><span class="op">>></span> <span class="ident">From</span><span class="op"><</span><span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">AsyncResult</span><span class="op"><</span><span class="ident">T</span><span class="op">></span>, <span class="ident">E</span><span class="op">>></span> <span class="kw">for</span> <span class="ident">AsyncResult</span><span class="op"><</span><span class="ident">T</span><span class="op">></span> {
|
||
<span class="attribute">#[<span class="ident">inline</span>]</span>
|
||
<span class="kw">fn</span> <span class="ident">from</span>(<span class="ident">res</span>: <span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">AsyncResult</span><span class="op"><</span><span class="ident">T</span><span class="op">></span>, <span class="ident">E</span><span class="op">></span>) <span class="op">-></span> <span class="self">Self</span> {
|
||
<span class="kw">match</span> <span class="ident">res</span> {
|
||
<span class="prelude-val">Ok</span>(<span class="ident">val</span>) <span class="op">=></span> <span class="ident">val</span>,
|
||
<span class="prelude-val">Err</span>(<span class="ident">err</span>) <span class="op">=></span> <span class="ident">AsyncResult</span>(<span class="prelude-val">Some</span>(<span class="ident">AsyncResultItem</span>::<span class="prelude-val">Err</span>(<span class="ident">err</span>.<span class="ident">into</span>()))),
|
||
}
|
||
}
|
||
}
|
||
|
||
<span class="kw">impl</span><span class="op"><</span><span class="ident">T</span>, <span class="ident">E</span>: <span class="ident">Into</span><span class="op"><</span><span class="ident">Error</span><span class="op">>></span> <span class="ident">From</span><span class="op"><</span><span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">T</span>, <span class="ident">E</span><span class="op">>></span> <span class="kw">for</span> <span class="ident">AsyncResult</span><span class="op"><</span><span class="ident">T</span><span class="op">></span> {
|
||
<span class="attribute">#[<span class="ident">inline</span>]</span>
|
||
<span class="kw">fn</span> <span class="ident">from</span>(<span class="ident">res</span>: <span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">T</span>, <span class="ident">E</span><span class="op">></span>) <span class="op">-></span> <span class="self">Self</span> {
|
||
<span class="kw">match</span> <span class="ident">res</span> {
|
||
<span class="prelude-val">Ok</span>(<span class="ident">val</span>) <span class="op">=></span> <span class="ident">AsyncResult</span>(<span class="prelude-val">Some</span>(<span class="ident">AsyncResultItem</span>::<span class="prelude-val">Ok</span>(<span class="ident">val</span>))),
|
||
<span class="prelude-val">Err</span>(<span class="ident">err</span>) <span class="op">=></span> <span class="ident">AsyncResult</span>(<span class="prelude-val">Some</span>(<span class="ident">AsyncResultItem</span>::<span class="prelude-val">Err</span>(<span class="ident">err</span>.<span class="ident">into</span>()))),
|
||
}
|
||
}
|
||
}
|
||
|
||
<span class="kw">impl</span><span class="op"><</span><span class="ident">T</span>, <span class="ident">E</span><span class="op">></span> <span class="ident">From</span><span class="op"><</span><span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">Box</span><span class="op"><</span><span class="ident">Future</span><span class="op"><</span><span class="ident">Item</span> <span class="op">=</span> <span class="ident">T</span>, <span class="ident">Error</span> <span class="op">=</span> <span class="ident">E</span><span class="op">>></span>, <span class="ident">E</span><span class="op">>></span> <span class="kw">for</span> <span class="ident">AsyncResult</span><span class="op"><</span><span class="ident">T</span><span class="op">></span>
|
||
<span class="kw">where</span>
|
||
<span class="ident">T</span>: <span class="lifetime">'static</span>,
|
||
<span class="ident">E</span>: <span class="ident">Into</span><span class="op"><</span><span class="ident">Error</span><span class="op">></span> <span class="op">+</span> <span class="lifetime">'static</span>,
|
||
{
|
||
<span class="attribute">#[<span class="ident">inline</span>]</span>
|
||
<span class="kw">fn</span> <span class="ident">from</span>(<span class="ident">res</span>: <span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">Box</span><span class="op"><</span><span class="ident">Future</span><span class="op"><</span><span class="ident">Item</span> <span class="op">=</span> <span class="ident">T</span>, <span class="ident">Error</span> <span class="op">=</span> <span class="ident">E</span><span class="op">>></span>, <span class="ident">E</span><span class="op">></span>) <span class="op">-></span> <span class="self">Self</span> {
|
||
<span class="kw">match</span> <span class="ident">res</span> {
|
||
<span class="prelude-val">Ok</span>(<span class="ident">fut</span>) <span class="op">=></span> <span class="ident">AsyncResult</span>(<span class="prelude-val">Some</span>(<span class="ident">AsyncResultItem</span>::<span class="ident">Future</span>(<span class="ident">Box</span>::<span class="ident">new</span>(
|
||
<span class="ident">fut</span>.<span class="ident">map_err</span>(<span class="op">|</span><span class="ident">e</span><span class="op">|</span> <span class="ident">e</span>.<span class="ident">into</span>()),
|
||
)))),
|
||
<span class="prelude-val">Err</span>(<span class="ident">err</span>) <span class="op">=></span> <span class="ident">AsyncResult</span>(<span class="prelude-val">Some</span>(<span class="ident">AsyncResultItem</span>::<span class="prelude-val">Err</span>(<span class="ident">err</span>.<span class="ident">into</span>()))),
|
||
}
|
||
}
|
||
}
|
||
|
||
<span class="kw">impl</span><span class="op"><</span><span class="ident">T</span><span class="op">></span> <span class="ident">From</span><span class="op"><</span><span class="ident">Box</span><span class="op"><</span><span class="ident">Future</span><span class="op"><</span><span class="ident">Item</span> <span class="op">=</span> <span class="ident">T</span>, <span class="ident">Error</span> <span class="op">=</span> <span class="ident">Error</span><span class="op">>></span><span class="op">></span> <span class="kw">for</span> <span class="ident">AsyncResult</span><span class="op"><</span><span class="ident">T</span><span class="op">></span> {
|
||
<span class="attribute">#[<span class="ident">inline</span>]</span>
|
||
<span class="kw">fn</span> <span class="ident">from</span>(<span class="ident">fut</span>: <span class="ident">Box</span><span class="op"><</span><span class="ident">Future</span><span class="op"><</span><span class="ident">Item</span> <span class="op">=</span> <span class="ident">T</span>, <span class="ident">Error</span> <span class="op">=</span> <span class="ident">Error</span><span class="op">>></span>) <span class="op">-></span> <span class="ident">AsyncResult</span><span class="op"><</span><span class="ident">T</span><span class="op">></span> {
|
||
<span class="ident">AsyncResult</span>(<span class="prelude-val">Some</span>(<span class="ident">AsyncResultItem</span>::<span class="ident">Future</span>(<span class="ident">fut</span>)))
|
||
}
|
||
}
|
||
|
||
<span class="doccomment">/// Convenience type alias</span>
|
||
<span class="kw">pub</span> <span class="kw">type</span> <span class="ident">FutureResponse</span><span class="op"><</span><span class="ident">I</span>, <span class="ident">E</span> <span class="op">=</span> <span class="ident">Error</span><span class="op">></span> <span class="op">=</span> <span class="ident">Box</span><span class="op"><</span><span class="ident">Future</span><span class="op"><</span><span class="ident">Item</span> <span class="op">=</span> <span class="ident">I</span>, <span class="ident">Error</span> <span class="op">=</span> <span class="ident">E</span><span class="op">>></span>;
|
||
|
||
<span class="kw">impl</span><span class="op"><</span><span class="ident">I</span>, <span class="ident">E</span><span class="op">></span> <span class="ident">Responder</span> <span class="kw">for</span> <span class="ident">Box</span><span class="op"><</span><span class="ident">Future</span><span class="op"><</span><span class="ident">Item</span> <span class="op">=</span> <span class="ident">I</span>, <span class="ident">Error</span> <span class="op">=</span> <span class="ident">E</span><span class="op">>></span>
|
||
<span class="kw">where</span>
|
||
<span class="ident">I</span>: <span class="ident">Responder</span> <span class="op">+</span> <span class="lifetime">'static</span>,
|
||
<span class="ident">E</span>: <span class="ident">Into</span><span class="op"><</span><span class="ident">Error</span><span class="op">></span> <span class="op">+</span> <span class="lifetime">'static</span>,
|
||
{
|
||
<span class="kw">type</span> <span class="ident">Item</span> <span class="op">=</span> <span class="ident">AsyncResult</span><span class="op"><</span><span class="ident">HttpResponse</span><span class="op">></span>;
|
||
<span class="kw">type</span> <span class="ident">Error</span> <span class="op">=</span> <span class="ident">Error</span>;
|
||
|
||
<span class="attribute">#[<span class="ident">inline</span>]</span>
|
||
<span class="kw">fn</span> <span class="ident">respond_to</span><span class="op"><</span><span class="ident">S</span>: <span class="lifetime">'static</span><span class="op">></span>(
|
||
<span class="self">self</span>, <span class="ident">req</span>: <span class="kw-2">&</span><span class="ident">HttpRequest</span><span class="op"><</span><span class="ident">S</span><span class="op">></span>,
|
||
) <span class="op">-></span> <span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">AsyncResult</span><span class="op"><</span><span class="ident">HttpResponse</span><span class="op">></span>, <span class="ident">Error</span><span class="op">></span> {
|
||
<span class="kw">let</span> <span class="ident">req</span> <span class="op">=</span> <span class="ident">req</span>.<span class="ident">clone</span>();
|
||
<span class="kw">let</span> <span class="ident">fut</span> <span class="op">=</span> <span class="self">self</span>
|
||
.<span class="ident">map_err</span>(<span class="op">|</span><span class="ident">e</span><span class="op">|</span> <span class="ident">e</span>.<span class="ident">into</span>())
|
||
.<span class="ident">then</span>(<span class="kw">move</span> <span class="op">|</span><span class="ident">r</span><span class="op">|</span> <span class="kw">match</span> <span class="ident">r</span>.<span class="ident">respond_to</span>(<span class="kw-2">&</span><span class="ident">req</span>) {
|
||
<span class="prelude-val">Ok</span>(<span class="ident">reply</span>) <span class="op">=></span> <span class="kw">match</span> <span class="ident">reply</span>.<span class="ident">into</span>().<span class="ident">into</span>() {
|
||
<span class="ident">AsyncResultItem</span>::<span class="prelude-val">Ok</span>(<span class="ident">resp</span>) <span class="op">=></span> <span class="ident">ok</span>(<span class="ident">resp</span>),
|
||
<span class="kw">_</span> <span class="op">=></span> <span class="macro">panic</span><span class="macro">!</span>(<span class="string">"Nested async replies are not supported"</span>),
|
||
},
|
||
<span class="prelude-val">Err</span>(<span class="ident">e</span>) <span class="op">=></span> <span class="ident">err</span>(<span class="ident">e</span>),
|
||
});
|
||
<span class="prelude-val">Ok</span>(<span class="ident">AsyncResult</span>::<span class="ident">async</span>(<span class="ident">Box</span>::<span class="ident">new</span>(<span class="ident">fut</span>)))
|
||
}
|
||
}
|
||
|
||
<span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">trait</span> <span class="ident">RouteHandler</span><span class="op"><</span><span class="ident">S</span><span class="op">></span>: <span class="lifetime">'static</span> {
|
||
<span class="kw">fn</span> <span class="ident">handle</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="kw-2">&</span><span class="ident">HttpRequest</span><span class="op"><</span><span class="ident">S</span><span class="op">></span>) <span class="op">-></span> <span class="ident">AsyncResult</span><span class="op"><</span><span class="ident">HttpResponse</span><span class="op">></span>;
|
||
|
||
<span class="kw">fn</span> <span class="ident">has_default_resource</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-></span> <span class="ident">bool</span> {
|
||
<span class="bool-val">false</span>
|
||
}
|
||
|
||
<span class="kw">fn</span> <span class="ident">default_resource</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>, <span class="kw">_</span>: <span class="ident">DefaultResource</span><span class="op"><</span><span class="ident">S</span><span class="op">></span>) {}
|
||
|
||
<span class="kw">fn</span> <span class="ident">finish</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="self">self</span>) {}
|
||
}
|
||
|
||
<span class="doccomment">/// Route handler wrapper for Handler</span>
|
||
<span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">struct</span> <span class="ident">WrapHandler</span><span class="op"><</span><span class="ident">S</span>, <span class="ident">H</span>, <span class="ident">R</span><span class="op">></span>
|
||
<span class="kw">where</span>
|
||
<span class="ident">H</span>: <span class="ident">Handler</span><span class="op"><</span><span class="ident">S</span>, <span class="prelude-ty">Result</span> <span class="op">=</span> <span class="ident">R</span><span class="op">></span>,
|
||
<span class="ident">R</span>: <span class="ident">Responder</span>,
|
||
<span class="ident">S</span>: <span class="lifetime">'static</span>,
|
||
{
|
||
<span class="ident">h</span>: <span class="ident">H</span>,
|
||
<span class="ident">s</span>: <span class="ident">PhantomData</span><span class="op"><</span><span class="ident">S</span><span class="op">></span>,
|
||
}
|
||
|
||
<span class="kw">impl</span><span class="op"><</span><span class="ident">S</span>, <span class="ident">H</span>, <span class="ident">R</span><span class="op">></span> <span class="ident">WrapHandler</span><span class="op"><</span><span class="ident">S</span>, <span class="ident">H</span>, <span class="ident">R</span><span class="op">></span>
|
||
<span class="kw">where</span>
|
||
<span class="ident">H</span>: <span class="ident">Handler</span><span class="op"><</span><span class="ident">S</span>, <span class="prelude-ty">Result</span> <span class="op">=</span> <span class="ident">R</span><span class="op">></span>,
|
||
<span class="ident">R</span>: <span class="ident">Responder</span>,
|
||
<span class="ident">S</span>: <span class="lifetime">'static</span>,
|
||
{
|
||
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">new</span>(<span class="ident">h</span>: <span class="ident">H</span>) <span class="op">-></span> <span class="self">Self</span> {
|
||
<span class="ident">WrapHandler</span> { <span class="ident">h</span>, <span class="ident">s</span>: <span class="ident">PhantomData</span> }
|
||
}
|
||
}
|
||
|
||
<span class="kw">impl</span><span class="op"><</span><span class="ident">S</span>, <span class="ident">H</span>, <span class="ident">R</span><span class="op">></span> <span class="ident">RouteHandler</span><span class="op"><</span><span class="ident">S</span><span class="op">></span> <span class="kw">for</span> <span class="ident">WrapHandler</span><span class="op"><</span><span class="ident">S</span>, <span class="ident">H</span>, <span class="ident">R</span><span class="op">></span>
|
||
<span class="kw">where</span>
|
||
<span class="ident">H</span>: <span class="ident">Handler</span><span class="op"><</span><span class="ident">S</span>, <span class="prelude-ty">Result</span> <span class="op">=</span> <span class="ident">R</span><span class="op">></span>,
|
||
<span class="ident">R</span>: <span class="ident">Responder</span> <span class="op">+</span> <span class="lifetime">'static</span>,
|
||
<span class="ident">S</span>: <span class="lifetime">'static</span>,
|
||
{
|
||
<span class="kw">fn</span> <span class="ident">handle</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">req</span>: <span class="kw-2">&</span><span class="ident">HttpRequest</span><span class="op"><</span><span class="ident">S</span><span class="op">></span>) <span class="op">-></span> <span class="ident">AsyncResult</span><span class="op"><</span><span class="ident">HttpResponse</span><span class="op">></span> {
|
||
<span class="kw">match</span> <span class="self">self</span>.<span class="ident">h</span>.<span class="ident">handle</span>(<span class="ident">req</span>).<span class="ident">respond_to</span>(<span class="ident">req</span>) {
|
||
<span class="prelude-val">Ok</span>(<span class="ident">reply</span>) <span class="op">=></span> <span class="ident">reply</span>.<span class="ident">into</span>(),
|
||
<span class="prelude-val">Err</span>(<span class="ident">err</span>) <span class="op">=></span> <span class="ident">AsyncResult</span>::<span class="ident">err</span>(<span class="ident">err</span>.<span class="ident">into</span>()),
|
||
}
|
||
}
|
||
}
|
||
|
||
<span class="doccomment">/// Async route handler</span>
|
||
<span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">struct</span> <span class="ident">AsyncHandler</span><span class="op"><</span><span class="ident">S</span>, <span class="ident">H</span>, <span class="ident">F</span>, <span class="ident">R</span>, <span class="ident">E</span><span class="op">></span>
|
||
<span class="kw">where</span>
|
||
<span class="ident">H</span>: <span class="ident">Fn</span>(<span class="kw-2">&</span><span class="ident">HttpRequest</span><span class="op"><</span><span class="ident">S</span><span class="op">></span>) <span class="op">-></span> <span class="ident">F</span> <span class="op">+</span> <span class="lifetime">'static</span>,
|
||
<span class="ident">F</span>: <span class="ident">Future</span><span class="op"><</span><span class="ident">Item</span> <span class="op">=</span> <span class="ident">R</span>, <span class="ident">Error</span> <span class="op">=</span> <span class="ident">E</span><span class="op">></span> <span class="op">+</span> <span class="lifetime">'static</span>,
|
||
<span class="ident">R</span>: <span class="ident">Responder</span> <span class="op">+</span> <span class="lifetime">'static</span>,
|
||
<span class="ident">E</span>: <span class="ident">Into</span><span class="op"><</span><span class="ident">Error</span><span class="op">></span> <span class="op">+</span> <span class="lifetime">'static</span>,
|
||
<span class="ident">S</span>: <span class="lifetime">'static</span>,
|
||
{
|
||
<span class="ident">h</span>: <span class="ident">Box</span><span class="op"><</span><span class="ident">H</span><span class="op">></span>,
|
||
<span class="ident">s</span>: <span class="ident">PhantomData</span><span class="op"><</span><span class="ident">S</span><span class="op">></span>,
|
||
}
|
||
|
||
<span class="kw">impl</span><span class="op"><</span><span class="ident">S</span>, <span class="ident">H</span>, <span class="ident">F</span>, <span class="ident">R</span>, <span class="ident">E</span><span class="op">></span> <span class="ident">AsyncHandler</span><span class="op"><</span><span class="ident">S</span>, <span class="ident">H</span>, <span class="ident">F</span>, <span class="ident">R</span>, <span class="ident">E</span><span class="op">></span>
|
||
<span class="kw">where</span>
|
||
<span class="ident">H</span>: <span class="ident">Fn</span>(<span class="kw-2">&</span><span class="ident">HttpRequest</span><span class="op"><</span><span class="ident">S</span><span class="op">></span>) <span class="op">-></span> <span class="ident">F</span> <span class="op">+</span> <span class="lifetime">'static</span>,
|
||
<span class="ident">F</span>: <span class="ident">Future</span><span class="op"><</span><span class="ident">Item</span> <span class="op">=</span> <span class="ident">R</span>, <span class="ident">Error</span> <span class="op">=</span> <span class="ident">E</span><span class="op">></span> <span class="op">+</span> <span class="lifetime">'static</span>,
|
||
<span class="ident">R</span>: <span class="ident">Responder</span> <span class="op">+</span> <span class="lifetime">'static</span>,
|
||
<span class="ident">E</span>: <span class="ident">Into</span><span class="op"><</span><span class="ident">Error</span><span class="op">></span> <span class="op">+</span> <span class="lifetime">'static</span>,
|
||
<span class="ident">S</span>: <span class="lifetime">'static</span>,
|
||
{
|
||
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">new</span>(<span class="ident">h</span>: <span class="ident">H</span>) <span class="op">-></span> <span class="self">Self</span> {
|
||
<span class="ident">AsyncHandler</span> {
|
||
<span class="ident">h</span>: <span class="ident">Box</span>::<span class="ident">new</span>(<span class="ident">h</span>),
|
||
<span class="ident">s</span>: <span class="ident">PhantomData</span>,
|
||
}
|
||
}
|
||
}
|
||
|
||
<span class="kw">impl</span><span class="op"><</span><span class="ident">S</span>, <span class="ident">H</span>, <span class="ident">F</span>, <span class="ident">R</span>, <span class="ident">E</span><span class="op">></span> <span class="ident">RouteHandler</span><span class="op"><</span><span class="ident">S</span><span class="op">></span> <span class="kw">for</span> <span class="ident">AsyncHandler</span><span class="op"><</span><span class="ident">S</span>, <span class="ident">H</span>, <span class="ident">F</span>, <span class="ident">R</span>, <span class="ident">E</span><span class="op">></span>
|
||
<span class="kw">where</span>
|
||
<span class="ident">H</span>: <span class="ident">Fn</span>(<span class="kw-2">&</span><span class="ident">HttpRequest</span><span class="op"><</span><span class="ident">S</span><span class="op">></span>) <span class="op">-></span> <span class="ident">F</span> <span class="op">+</span> <span class="lifetime">'static</span>,
|
||
<span class="ident">F</span>: <span class="ident">Future</span><span class="op"><</span><span class="ident">Item</span> <span class="op">=</span> <span class="ident">R</span>, <span class="ident">Error</span> <span class="op">=</span> <span class="ident">E</span><span class="op">></span> <span class="op">+</span> <span class="lifetime">'static</span>,
|
||
<span class="ident">R</span>: <span class="ident">Responder</span> <span class="op">+</span> <span class="lifetime">'static</span>,
|
||
<span class="ident">E</span>: <span class="ident">Into</span><span class="op"><</span><span class="ident">Error</span><span class="op">></span> <span class="op">+</span> <span class="lifetime">'static</span>,
|
||
<span class="ident">S</span>: <span class="lifetime">'static</span>,
|
||
{
|
||
<span class="kw">fn</span> <span class="ident">handle</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">req</span>: <span class="kw-2">&</span><span class="ident">HttpRequest</span><span class="op"><</span><span class="ident">S</span><span class="op">></span>) <span class="op">-></span> <span class="ident">AsyncResult</span><span class="op"><</span><span class="ident">HttpResponse</span><span class="op">></span> {
|
||
<span class="kw">let</span> <span class="ident">req</span> <span class="op">=</span> <span class="ident">req</span>.<span class="ident">clone</span>();
|
||
<span class="kw">let</span> <span class="ident">fut</span> <span class="op">=</span> (<span class="self">self</span>.<span class="ident">h</span>)(<span class="kw-2">&</span><span class="ident">req</span>).<span class="ident">map_err</span>(<span class="op">|</span><span class="ident">e</span><span class="op">|</span> <span class="ident">e</span>.<span class="ident">into</span>()).<span class="ident">then</span>(<span class="kw">move</span> <span class="op">|</span><span class="ident">r</span><span class="op">|</span> {
|
||
<span class="kw">match</span> <span class="ident">r</span>.<span class="ident">respond_to</span>(<span class="kw-2">&</span><span class="ident">req</span>) {
|
||
<span class="prelude-val">Ok</span>(<span class="ident">reply</span>) <span class="op">=></span> <span class="kw">match</span> <span class="ident">reply</span>.<span class="ident">into</span>().<span class="ident">into</span>() {
|
||
<span class="ident">AsyncResultItem</span>::<span class="prelude-val">Ok</span>(<span class="ident">resp</span>) <span class="op">=></span> <span class="ident">Either</span>::<span class="ident">A</span>(<span class="ident">ok</span>(<span class="ident">resp</span>)),
|
||
<span class="ident">AsyncResultItem</span>::<span class="prelude-val">Err</span>(<span class="ident">e</span>) <span class="op">=></span> <span class="ident">Either</span>::<span class="ident">A</span>(<span class="ident">err</span>(<span class="ident">e</span>)),
|
||
<span class="ident">AsyncResultItem</span>::<span class="ident">Future</span>(<span class="ident">fut</span>) <span class="op">=></span> <span class="ident">Either</span>::<span class="ident">B</span>(<span class="ident">fut</span>),
|
||
},
|
||
<span class="prelude-val">Err</span>(<span class="ident">e</span>) <span class="op">=></span> <span class="ident">Either</span>::<span class="ident">A</span>(<span class="ident">err</span>(<span class="ident">e</span>)),
|
||
}
|
||
});
|
||
<span class="ident">AsyncResult</span>::<span class="ident">async</span>(<span class="ident">Box</span>::<span class="ident">new</span>(<span class="ident">fut</span>))
|
||
}
|
||
}
|
||
|
||
<span class="doccomment">/// Access an application state</span>
|
||
<span class="doccomment">///</span>
|
||
<span class="doccomment">/// `S` - application state type</span>
|
||
<span class="doccomment">///</span>
|
||
<span class="doccomment">/// ## Example</span>
|
||
<span class="doccomment">///</span>
|
||
<span class="doccomment">/// ```rust</span>
|
||
<span class="doccomment">/// # extern crate bytes;</span>
|
||
<span class="doccomment">/// # extern crate actix_web;</span>
|
||
<span class="doccomment">/// # extern crate futures;</span>
|
||
<span class="doccomment">/// #[macro_use] extern crate serde_derive;</span>
|
||
<span class="doccomment">/// use actix_web::{http, App, Path, State};</span>
|
||
<span class="doccomment">///</span>
|
||
<span class="doccomment">/// /// Application state</span>
|
||
<span class="doccomment">/// struct MyApp {</span>
|
||
<span class="doccomment">/// msg: &'static str,</span>
|
||
<span class="doccomment">/// }</span>
|
||
<span class="doccomment">///</span>
|
||
<span class="doccomment">/// #[derive(Deserialize)]</span>
|
||
<span class="doccomment">/// struct Info {</span>
|
||
<span class="doccomment">/// username: String,</span>
|
||
<span class="doccomment">/// }</span>
|
||
<span class="doccomment">///</span>
|
||
<span class="doccomment">/// /// extract path info using serde</span>
|
||
<span class="doccomment">/// fn index(state: State<MyApp>, path: Path<Info>) -> String {</span>
|
||
<span class="doccomment">/// format!("{} {}!", state.msg, path.username)</span>
|
||
<span class="doccomment">/// }</span>
|
||
<span class="doccomment">///</span>
|
||
<span class="doccomment">/// fn main() {</span>
|
||
<span class="doccomment">/// let app = App::with_state(MyApp { msg: "Welcome" }).resource(</span>
|
||
<span class="doccomment">/// "/{username}/index.html", // <- define path parameters</span>
|
||
<span class="doccomment">/// |r| r.method(http::Method::GET).with(index),</span>
|
||
<span class="doccomment">/// ); // <- use `with` extractor</span>
|
||
<span class="doccomment">/// }</span>
|
||
<span class="doccomment">/// ```</span>
|
||
<span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">State</span><span class="op"><</span><span class="ident">S</span><span class="op">></span>(<span class="ident">HttpRequest</span><span class="op"><</span><span class="ident">S</span><span class="op">></span>);
|
||
|
||
<span class="kw">impl</span><span class="op"><</span><span class="ident">S</span><span class="op">></span> <span class="ident">Deref</span> <span class="kw">for</span> <span class="ident">State</span><span class="op"><</span><span class="ident">S</span><span class="op">></span> {
|
||
<span class="kw">type</span> <span class="ident">Target</span> <span class="op">=</span> <span class="ident">S</span>;
|
||
|
||
<span class="kw">fn</span> <span class="ident">deref</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-></span> <span class="kw-2">&</span><span class="ident">S</span> {
|
||
<span class="self">self</span>.<span class="number">0</span>.<span class="ident">state</span>()
|
||
}
|
||
}
|
||
|
||
<span class="kw">impl</span><span class="op"><</span><span class="ident">S</span><span class="op">></span> <span class="ident">FromRequest</span><span class="op"><</span><span class="ident">S</span><span class="op">></span> <span class="kw">for</span> <span class="ident">State</span><span class="op"><</span><span class="ident">S</span><span class="op">></span> {
|
||
<span class="kw">type</span> <span class="ident">Config</span> <span class="op">=</span> ();
|
||
<span class="kw">type</span> <span class="prelude-ty">Result</span> <span class="op">=</span> <span class="ident">State</span><span class="op"><</span><span class="ident">S</span><span class="op">></span>;
|
||
|
||
<span class="attribute">#[<span class="ident">inline</span>]</span>
|
||
<span class="kw">fn</span> <span class="ident">from_request</span>(<span class="ident">req</span>: <span class="kw-2">&</span><span class="ident">HttpRequest</span><span class="op"><</span><span class="ident">S</span><span class="op">></span>, <span class="kw">_</span>: <span class="kw-2">&</span><span class="self">Self</span>::<span class="ident">Config</span>) <span class="op">-></span> <span class="self">Self</span>::<span class="prelude-ty">Result</span> {
|
||
<span class="ident">State</span>(<span class="ident">req</span>.<span class="ident">clone</span>())
|
||
}
|
||
}
|
||
</pre>
|
||
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