<!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 `actix-session/src/lib.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>lib.rs - 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="../../light.css" id="themeStyle"><link rel="stylesheet" type="text/css" href="../../dark.css" disabled ><link rel="stylesheet" type="text/css" href="../../ayu.css" disabled ><script id="default-settings" ></script><script src="../../storage.js"></script><script src="../../crates.js"></script><noscript><link rel="stylesheet" href="../../noscript.css"></noscript><link rel="icon" type="image/svg+xml" href="../../favicon.svg"><link rel="alternate icon" type="image/png" href="../../favicon-16x16.png"><link rel="alternate icon" type="image/png" href="../../favicon-32x32.png"><style type="text/css">#crate-search{background-image:url("../../down-arrow.svg");}</style></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"><div class="sidebar-menu" role="button">☰</div><a href='../../actix_session/index.html'><div class='logo-container rust-logo'><img src='../../rust-logo.png' alt='logo'></div></a></nav><div class="theme-picker"><button id="theme-picker" aria-label="Pick another theme!" aria-haspopup="menu" title="themes"><img width="18" height="18" alt="Pick another theme!" src="../../brush.svg"></button><div id="theme-choices" role="menu"></div></div><nav class="sub"><form class="search-form"><div class="search-container"><div><select id="crate-search"><option value="All crates">All crates</option></select><input class="search-input"name="search" disabled autocomplete="off" spellcheck="false" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"></div><button type="button" id="help-button" title="help">?</button><a id="settings-menu" href="../../settings.html" title="settings"><img width="18" height="18" alt="Change settings" src="../../wheel.svg"></a></div></form></nav><section id="main" class="content"><div class="example-wrap"><pre class="line-numbers"><span id="1"> 1</span>
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</pre><pre class="rust">
<span class="doccomment">//! Sessions for Actix Web.</span>
<span class="doccomment">//!</span>
<span class="doccomment">//! Provides a general solution for session management. Session middleware could provide different</span>
<span class="doccomment">//! implementations which could be accessed via general session API.</span>
<span class="doccomment">//!</span>
<span class="doccomment">//! This crate provides a general solution for session management and includes a cookie backend.</span>
<span class="doccomment">//! Other backend implementations can be built to use persistent or key-value stores, for example.</span>
<span class="doccomment">//!</span>
<span class="doccomment">//! In general, some session middleware, such as a [`CookieSession`] is initialized and applied.</span>
<span class="doccomment">//! To access session data, the [`Session`] extractor must be used. This extractor allows reading</span>
<span class="doccomment">//! modifying session data.</span>
<span class="doccomment">//!</span>
<span class="doccomment">//! ```no_run</span>
<span class="doccomment">//! use actix_web::{web, App, HttpServer, HttpResponse, Error};</span>
<span class="doccomment">//! use actix_session::{Session, CookieSession};</span>
<span class="doccomment">//!</span>
<span class="doccomment">//! fn index(session: Session) -> Result<&'static str, Error> {</span>
<span class="doccomment">//! // access session data</span>
<span class="doccomment">//! if let Some(count) = session.get::<i32>("counter")? {</span>
<span class="doccomment">//! println!("SESSION value: {}", count);</span>
<span class="doccomment">//! session.insert("counter", count + 1)?;</span>
<span class="doccomment">//! } else {</span>
<span class="doccomment">//! session.insert("counter", 1)?;</span>
<span class="doccomment">//! }</span>
<span class="doccomment">//!</span>
<span class="doccomment">//! Ok("Welcome!")</span>
<span class="doccomment">//! }</span>
<span class="doccomment">//!</span>
<span class="doccomment">//! #[actix_rt::main]</span>
<span class="doccomment">//! async fn main() -> std::io::Result<()> {</span>
<span class="doccomment">//! HttpServer::new(</span>
<span class="doccomment">//! || App::new()</span>
<span class="doccomment">//! // create cookie based session middleware</span>
<span class="doccomment">//! .wrap(CookieSession::signed(&[0; 32]).secure(false))</span>
<span class="doccomment">//! .default_service(web::to(|| HttpResponse::Ok())))</span>
<span class="doccomment">//! .bind(("127.0.0.1", 8080))?</span>
<span class="doccomment">//! .run()</span>
<span class="doccomment">//! .await</span>
<span class="doccomment">//! }</span>
<span class="doccomment">//! ```</span>
<span class="attribute">#![<span class="ident">deny</span>(<span class="ident">rust_2018_idioms</span>, <span class="ident">nonstandard_style</span>)]</span>
<span class="attribute">#![<span class="ident">warn</span>(<span class="ident">missing_docs</span>)]</span>
<span class="kw">use</span> <span class="ident">std</span>::{
<span class="ident">cell</span>::{<span class="ident">Ref</span>, <span class="ident">RefCell</span>},
<span class="ident">collections::HashMap</span>,
<span class="ident">mem</span>,
<span class="ident">rc::Rc</span>,
};
<span class="kw">use</span> <span class="ident">actix_web</span>::{
<span class="ident">dev</span>::{<span class="ident">Extensions</span>, <span class="ident">Payload</span>, <span class="ident">RequestHead</span>, <span class="ident">ServiceRequest</span>, <span class="ident">ServiceResponse</span>},
<span class="ident">Error</span>, <span class="ident">FromRequest</span>, <span class="ident">HttpMessage</span>, <span class="ident">HttpRequest</span>,
};
<span class="kw">use</span> <span class="ident">futures_util::future</span>::{<span class="ident">ok</span>, <span class="ident">Ready</span>};
<span class="kw">use</span> <span class="ident">serde</span>::{<span class="ident">de::DeserializeOwned</span>, <span class="ident">Serialize</span>};
<span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"cookie-session"</span>)]</span>
<span class="kw">mod</span> <span class="ident">cookie</span>;
<span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"cookie-session"</span>)]</span>
<span class="kw">pub</span> <span class="kw">use</span> <span class="self">self</span><span class="ident">::cookie::CookieSession</span>;
<span class="doccomment">/// The high-level interface you use to modify session data.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// Session object is obtained with [`UserSession::get_session`]. The [`UserSession`] trait is</span>
<span class="doccomment">/// implemented for `HttpRequest`, `ServiceRequest`, and `RequestHead`.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```</span>
<span class="doccomment">/// use actix_session::Session;</span>
<span class="doccomment">/// use actix_web::Result;</span>
<span class="doccomment">///</span>
<span class="doccomment">/// async fn index(session: Session) -> Result<&'static str> {</span>
<span class="doccomment">/// // access session data</span>
<span class="doccomment">/// if let Some(count) = session.get::<i32>("counter")? {</span>
<span class="doccomment">/// session.insert("counter", count + 1)?;</span>
<span class="doccomment">/// } else {</span>
<span class="doccomment">/// session.insert("counter", 1)?;</span>
<span class="doccomment">/// }</span>
<span class="doccomment">///</span>
<span class="doccomment">/// Ok("Welcome!")</span>
<span class="doccomment">/// }</span>
<span class="doccomment">/// ```</span>
<span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">Session</span>(<span class="ident">Rc</span><span class="op"><</span><span class="ident">RefCell</span><span class="op"><</span><span class="ident">SessionInner</span><span class="op">></span><span class="op">></span>);
<span class="doccomment">/// Extraction of a [`Session`] object.</span>
<span class="kw">pub</span> <span class="kw">trait</span> <span class="ident">UserSession</span> {
<span class="doccomment">/// Extract the [`Session`] object</span>
<span class="kw">fn</span> <span class="ident">get_session</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-</span><span class="op">></span> <span class="ident">Session</span>;
}
<span class="kw">impl</span> <span class="ident">UserSession</span> <span class="kw">for</span> <span class="ident">HttpRequest</span> {
<span class="kw">fn</span> <span class="ident">get_session</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-</span><span class="op">></span> <span class="ident">Session</span> {
<span class="ident">Session::get_session</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="kw-2">*</span><span class="self">self</span>.<span class="ident">extensions_mut</span>())
}
}
<span class="kw">impl</span> <span class="ident">UserSession</span> <span class="kw">for</span> <span class="ident">ServiceRequest</span> {
<span class="kw">fn</span> <span class="ident">get_session</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-</span><span class="op">></span> <span class="ident">Session</span> {
<span class="ident">Session::get_session</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="kw-2">*</span><span class="self">self</span>.<span class="ident">extensions_mut</span>())
}
}
<span class="kw">impl</span> <span class="ident">UserSession</span> <span class="kw">for</span> <span class="ident">RequestHead</span> {
<span class="kw">fn</span> <span class="ident">get_session</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-</span><span class="op">></span> <span class="ident">Session</span> {
<span class="ident">Session::get_session</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="kw-2">*</span><span class="self">self</span>.<span class="ident">extensions_mut</span>())
}
}
<span class="doccomment">/// Status of a [`Session`].</span>
<span class="attribute">#[<span class="ident">derive</span>(<span class="ident">PartialEq</span>, <span class="ident">Clone</span>, <span class="ident">Debug</span>)]</span>
<span class="kw">pub</span> <span class="kw">enum</span> <span class="ident">SessionStatus</span> {
<span class="doccomment">/// Session has been updated and requires a new persist operation.</span>
<span class="ident">Changed</span>,
<span class="doccomment">/// Session is flagged for deletion and should be removed from client and server.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// Most operations on the session after purge flag is set should have no effect.</span>
<span class="ident">Purged</span>,
<span class="doccomment">/// Session is flagged for refresh.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// For example, when using a backend that has a TTL (time-to-live) expiry on the session entry,</span>
<span class="doccomment">/// the session will be refreshed even if no data inside it has changed. The client may also</span>
<span class="doccomment">/// be notified of the refresh.</span>
<span class="ident">Renewed</span>,
<span class="doccomment">/// Session is unchanged from when last seen (if exists).</span>
<span class="doccomment">///</span>
<span class="doccomment">/// This state also captures new (previously unissued) sessions such as a user's first</span>
<span class="doccomment">/// site visit.</span>
<span class="ident">Unchanged</span>,
}
<span class="kw">impl</span> <span class="ident">Default</span> <span class="kw">for</span> <span class="ident">SessionStatus</span> {
<span class="kw">fn</span> <span class="ident">default</span>() <span class="op">-</span><span class="op">></span> <span class="ident">SessionStatus</span> {
<span class="ident">SessionStatus::Unchanged</span>
}
}
<span class="attribute">#[<span class="ident">derive</span>(<span class="ident">Default</span>)]</span>
<span class="kw">struct</span> <span class="ident">SessionInner</span> {
<span class="ident">state</span>: <span class="ident">HashMap</span><span class="op"><</span><span class="ident">String</span>, <span class="ident">String</span><span class="op">></span>,
<span class="ident">status</span>: <span class="ident">SessionStatus</span>,
}
<span class="kw">impl</span> <span class="ident">Session</span> {
<span class="doccomment">/// Get a `value` from the session.</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">get</span><span class="op"><</span><span class="ident">T</span>: <span class="ident">DeserializeOwned</span><span class="op">></span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">key</span>: <span class="kw-2">&</span><span class="ident">str</span>) <span class="op">-</span><span class="op">></span> <span class="prelude-ty">Result</span><span class="op"><</span><span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">T</span><span class="op">></span>, <span class="ident">Error</span><span class="op">></span> {
<span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Some</span>(<span class="ident">s</span>) <span class="op">=</span> <span class="self">self</span>.<span class="number">0</span>.<span class="ident">borrow</span>().<span class="ident">state</span>.<span class="ident">get</span>(<span class="ident">key</span>) {
<span class="prelude-val">Ok</span>(<span class="prelude-val">Some</span>(<span class="ident">serde_json::from_str</span>(<span class="ident">s</span>)<span class="question-mark">?</span>))
} <span class="kw">else</span> {
<span class="prelude-val">Ok</span>(<span class="prelude-val">None</span>)
}
}
<span class="doccomment">/// Get all raw key-value data from the session.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// Note that values are JSON encoded.</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">entries</span>(<span class="kw-2">&</span><span class="self">self</span>) <span class="op">-</span><span class="op">></span> <span class="ident">Ref</span><span class="op"><</span><span class="lifetime">'_</span>, <span class="ident">HashMap</span><span class="op"><</span><span class="ident">String</span>, <span class="ident">String</span><span class="op">></span><span class="op">></span> {
<span class="ident">Ref::map</span>(<span class="self">self</span>.<span class="number">0</span>.<span class="ident">borrow</span>(), <span class="op">|</span><span class="ident">inner</span><span class="op">|</span> <span class="kw-2">&</span><span class="ident">inner</span>.<span class="ident">state</span>)
}
<span class="doccomment">/// Inserts a key-value pair into the session.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// Any serializable value can be used and will be encoded as JSON in session data, hence why</span>
<span class="doccomment">/// only a reference to the value is taken.</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">insert</span>(
<span class="kw-2">&</span><span class="self">self</span>,
<span class="ident">key</span>: <span class="kw">impl</span> <span class="ident">Into</span><span class="op"><</span><span class="ident">String</span><span class="op">></span>,
<span class="ident">value</span>: <span class="kw">impl</span> <span class="ident">Serialize</span>,
) <span class="op">-</span><span class="op">></span> <span class="prelude-ty">Result</span><span class="op"><</span>(), <span class="ident">Error</span><span class="op">></span> {
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">inner</span> <span class="op">=</span> <span class="self">self</span>.<span class="number">0</span>.<span class="ident">borrow_mut</span>();
<span class="kw">if</span> <span class="ident">inner</span>.<span class="ident">status</span> <span class="op">!</span><span class="op">=</span> <span class="ident">SessionStatus::Purged</span> {
<span class="ident">inner</span>.<span class="ident">status</span> <span class="op">=</span> <span class="ident">SessionStatus::Changed</span>;
<span class="kw">let</span> <span class="ident">val</span> <span class="op">=</span> <span class="ident">serde_json::to_string</span>(<span class="kw-2">&</span><span class="ident">value</span>)<span class="question-mark">?</span>;
<span class="ident">inner</span>.<span class="ident">state</span>.<span class="ident">insert</span>(<span class="ident">key</span>.<span class="ident">into</span>(), <span class="ident">val</span>);
}
<span class="prelude-val">Ok</span>(())
}
<span class="doccomment">/// Remove value from the session.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// If present, the JSON encoded value is returned.</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">remove</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">key</span>: <span class="kw-2">&</span><span class="ident">str</span>) <span class="op">-</span><span class="op">></span> <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">String</span><span class="op">></span> {
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">inner</span> <span class="op">=</span> <span class="self">self</span>.<span class="number">0</span>.<span class="ident">borrow_mut</span>();
<span class="kw">if</span> <span class="ident">inner</span>.<span class="ident">status</span> <span class="op">!</span><span class="op">=</span> <span class="ident">SessionStatus::Purged</span> {
<span class="ident">inner</span>.<span class="ident">status</span> <span class="op">=</span> <span class="ident">SessionStatus::Changed</span>;
<span class="kw">return</span> <span class="ident">inner</span>.<span class="ident">state</span>.<span class="ident">remove</span>(<span class="ident">key</span>);
}
<span class="prelude-val">None</span>
}
<span class="doccomment">/// Remove value from the session and deserialize.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// Returns None if key was not present in session. Returns T if deserialization succeeds,</span>
<span class="doccomment">/// otherwise returns un-deserialized JSON string.</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">remove_as</span><span class="op"><</span><span class="ident">T</span>: <span class="ident">DeserializeOwned</span><span class="op">></span>(
<span class="kw-2">&</span><span class="self">self</span>,
<span class="ident">key</span>: <span class="kw-2">&</span><span class="ident">str</span>,
) <span class="op">-</span><span class="op">></span> <span class="prelude-ty">Option</span><span class="op"><</span><span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">T</span>, <span class="ident">String</span><span class="op">></span><span class="op">></span> {
<span class="self">self</span>.<span class="ident">remove</span>(<span class="ident">key</span>)
.<span class="ident">map</span>(<span class="op">|</span><span class="ident">val_str</span><span class="op">|</span> <span class="kw">match</span> <span class="ident">serde_json::from_str</span>(<span class="kw-2">&</span><span class="ident">val_str</span>) {
<span class="prelude-val">Ok</span>(<span class="ident">val</span>) <span class="op">=</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="op">></span> {
<span class="macro">log::debug!</span>(
<span class="string">"removed value (key: {}) could not be deserialized as {}"</span>,
<span class="ident">key</span>,
<span class="ident">std::any::type_name</span>::<span class="op"><</span><span class="ident">T</span><span class="op">></span>()
);
<span class="prelude-val">Err</span>(<span class="ident">val_str</span>)
}
})
}
<span class="doccomment">/// Clear the session.</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">clear</span>(<span class="kw-2">&</span><span class="self">self</span>) {
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">inner</span> <span class="op">=</span> <span class="self">self</span>.<span class="number">0</span>.<span class="ident">borrow_mut</span>();
<span class="kw">if</span> <span class="ident">inner</span>.<span class="ident">status</span> <span class="op">!</span><span class="op">=</span> <span class="ident">SessionStatus::Purged</span> {
<span class="ident">inner</span>.<span class="ident">status</span> <span class="op">=</span> <span class="ident">SessionStatus::Changed</span>;
<span class="ident">inner</span>.<span class="ident">state</span>.<span class="ident">clear</span>()
}
}
<span class="doccomment">/// Removes session both client and server side.</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">purge</span>(<span class="kw-2">&</span><span class="self">self</span>) {
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">inner</span> <span class="op">=</span> <span class="self">self</span>.<span class="number">0</span>.<span class="ident">borrow_mut</span>();
<span class="ident">inner</span>.<span class="ident">status</span> <span class="op">=</span> <span class="ident">SessionStatus::Purged</span>;
<span class="ident">inner</span>.<span class="ident">state</span>.<span class="ident">clear</span>();
}
<span class="doccomment">/// Renews the session key, assigning existing session state to new key.</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">renew</span>(<span class="kw-2">&</span><span class="self">self</span>) {
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">inner</span> <span class="op">=</span> <span class="self">self</span>.<span class="number">0</span>.<span class="ident">borrow_mut</span>();
<span class="kw">if</span> <span class="ident">inner</span>.<span class="ident">status</span> <span class="op">!</span><span class="op">=</span> <span class="ident">SessionStatus::Purged</span> {
<span class="ident">inner</span>.<span class="ident">status</span> <span class="op">=</span> <span class="ident">SessionStatus::Renewed</span>;
}
}
<span class="doccomment">/// Adds the given key-value pairs to the session on the request.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// Values that match keys already existing on the session will be overwritten. Values should</span>
<span class="doccomment">/// already be JSON serialized.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # Examples</span>
<span class="doccomment">/// ```</span>
<span class="doccomment">/// # use actix_session::Session;</span>
<span class="doccomment">/// # use actix_web::test;</span>
<span class="doccomment">/// let mut req = test::TestRequest::default().to_srv_request();</span>
<span class="doccomment">///</span>
<span class="doccomment">/// Session::set_session(</span>
<span class="doccomment">/// &mut req,</span>
<span class="doccomment">/// vec![("counter".to_string(), serde_json::to_string(&0).unwrap())],</span>
<span class="doccomment">/// );</span>
<span class="doccomment">/// ```</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">set_session</span>(
<span class="ident">req</span>: <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">ServiceRequest</span>,
<span class="ident">data</span>: <span class="kw">impl</span> <span class="ident">IntoIterator</span><span class="op"><</span><span class="ident">Item</span> <span class="op">=</span> (<span class="ident">String</span>, <span class="ident">String</span>)<span class="op">></span>,
) {
<span class="kw">let</span> <span class="ident">session</span> <span class="op">=</span> <span class="ident">Session::get_session</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="kw-2">*</span><span class="ident">req</span>.<span class="ident">extensions_mut</span>());
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">inner</span> <span class="op">=</span> <span class="ident">session</span>.<span class="number">0</span>.<span class="ident">borrow_mut</span>();
<span class="ident">inner</span>.<span class="ident">state</span>.<span class="ident">extend</span>(<span class="ident">data</span>);
}
<span class="doccomment">/// Returns session status and iterator of key-value pairs of changes.</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">get_changes</span><span class="op"><</span><span class="ident">B</span><span class="op">></span>(
<span class="ident">res</span>: <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">ServiceResponse</span><span class="op"><</span><span class="ident">B</span><span class="op">></span>,
) <span class="op">-</span><span class="op">></span> (<span class="ident">SessionStatus</span>, <span class="kw">impl</span> <span class="ident">Iterator</span><span class="op"><</span><span class="ident">Item</span> <span class="op">=</span> (<span class="ident">String</span>, <span class="ident">String</span>)<span class="op">></span>) {
<span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Some</span>(<span class="ident">s_impl</span>) <span class="op">=</span> <span class="ident">res</span>
.<span class="ident">request</span>()
.<span class="ident">extensions</span>()
.<span class="ident">get</span>::<span class="op"><</span><span class="ident">Rc</span><span class="op"><</span><span class="ident">RefCell</span><span class="op"><</span><span class="ident">SessionInner</span><span class="op">></span><span class="op">></span><span class="op">></span>()
{
<span class="kw">let</span> <span class="ident">state</span> <span class="op">=</span> <span class="ident">mem::take</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">s_impl</span>.<span class="ident">borrow_mut</span>().<span class="ident">state</span>);
(<span class="ident">s_impl</span>.<span class="ident">borrow</span>().<span class="ident">status</span>.<span class="ident">clone</span>(), <span class="ident">state</span>.<span class="ident">into_iter</span>())
} <span class="kw">else</span> {
(<span class="ident">SessionStatus::Unchanged</span>, <span class="ident">HashMap::new</span>().<span class="ident">into_iter</span>())
}
}
<span class="kw">fn</span> <span class="ident">get_session</span>(<span class="ident">extensions</span>: <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">Extensions</span>) <span class="op">-</span><span class="op">></span> <span class="ident">Session</span> {
<span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Some</span>(<span class="ident">s_impl</span>) <span class="op">=</span> <span class="ident">extensions</span>.<span class="ident">get</span>::<span class="op"><</span><span class="ident">Rc</span><span class="op"><</span><span class="ident">RefCell</span><span class="op"><</span><span class="ident">SessionInner</span><span class="op">></span><span class="op">></span><span class="op">></span>() {
<span class="kw">return</span> <span class="ident">Session</span>(<span class="ident">Rc::clone</span>(<span class="kw-2">&</span><span class="ident">s_impl</span>));
}
<span class="kw">let</span> <span class="ident">inner</span> <span class="op">=</span> <span class="ident">Rc::new</span>(<span class="ident">RefCell::new</span>(<span class="ident">SessionInner::default</span>()));
<span class="ident">extensions</span>.<span class="ident">insert</span>(<span class="ident">inner</span>.<span class="ident">clone</span>());
<span class="ident">Session</span>(<span class="ident">inner</span>)
}
}
<span class="doccomment">/// Extractor implementation for Session type.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # Examples</span>
<span class="doccomment">/// ```</span>
<span class="doccomment">/// # use actix_web::*;</span>
<span class="doccomment">/// use actix_session::Session;</span>
<span class="doccomment">///</span>
<span class="doccomment">/// #[get("/")]</span>
<span class="doccomment">/// async fn index(session: Session) -> Result<impl Responder> {</span>
<span class="doccomment">/// // access session data</span>
<span class="doccomment">/// if let Some(count) = session.get::<i32>("counter")? {</span>
<span class="doccomment">/// session.insert("counter", count + 1)?;</span>
<span class="doccomment">/// } else {</span>
<span class="doccomment">/// session.insert("counter", 1)?;</span>
<span class="doccomment">/// }</span>
<span class="doccomment">///</span>
<span class="doccomment">/// let count = session.get::<i32>("counter")?.unwrap();</span>
<span class="doccomment">/// Ok(format!("Counter: {}", count))</span>
<span class="doccomment">/// }</span>
<span class="doccomment">/// ```</span>
<span class="kw">impl</span> <span class="ident">FromRequest</span> <span class="kw">for</span> <span class="ident">Session</span> {
<span class="kw">type</span> <span class="ident">Error</span> <span class="op">=</span> <span class="ident">Error</span>;
<span class="kw">type</span> <span class="ident">Future</span> <span class="op">=</span> <span class="ident">Ready</span><span class="op"><</span><span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">Session</span>, <span class="ident">Error</span><span class="op">></span><span class="op">></span>;
<span class="kw">type</span> <span class="ident">Config</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="kw">_</span>: <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">Payload</span>) <span class="op">-</span><span class="op">></span> <span class="self">Self</span><span class="ident">::Future</span> {
<span class="ident">ok</span>(<span class="ident">Session::get_session</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="kw-2">*</span><span class="ident">req</span>.<span class="ident">extensions_mut</span>()))
}
}
<span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">test</span>)]</span>
<span class="kw">mod</span> <span class="ident">tests</span> {
<span class="kw">use</span> <span class="ident">actix_web</span>::{<span class="ident">test</span>, <span class="ident">HttpResponse</span>};
<span class="kw">use</span> <span class="kw">super</span>::<span class="kw-2">*</span>;
<span class="attribute">#[<span class="ident">test</span>]</span>
<span class="kw">fn</span> <span class="ident">session</span>() {
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">req</span> <span class="op">=</span> <span class="ident">test::TestRequest::default</span>().<span class="ident">to_srv_request</span>();
<span class="ident">Session::set_session</span>(
<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">req</span>,
<span class="macro">vec!</span>[(<span class="string">"key"</span>.<span class="ident">to_string</span>(), <span class="ident">serde_json::to_string</span>(<span class="string">"value"</span>).<span class="ident">unwrap</span>())],
);
<span class="kw">let</span> <span class="ident">session</span> <span class="op">=</span> <span class="ident">Session::get_session</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="kw-2">*</span><span class="ident">req</span>.<span class="ident">extensions_mut</span>());
<span class="kw">let</span> <span class="ident">res</span> <span class="op">=</span> <span class="ident">session</span>.<span class="ident">get</span>::<span class="op"><</span><span class="ident">String</span><span class="op">></span>(<span class="string">"key"</span>).<span class="ident">unwrap</span>();
<span class="macro">assert_eq!</span>(<span class="ident">res</span>, <span class="prelude-val">Some</span>(<span class="string">"value"</span>.<span class="ident">to_string</span>()));
<span class="ident">session</span>.<span class="ident">insert</span>(<span class="string">"key2"</span>, <span class="string">"value2"</span>).<span class="ident">unwrap</span>();
<span class="ident">session</span>.<span class="ident">remove</span>(<span class="string">"key"</span>);
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">res</span> <span class="op">=</span> <span class="ident">req</span>.<span class="ident">into_response</span>(<span class="ident">HttpResponse::Ok</span>().<span class="ident">finish</span>());
<span class="kw">let</span> (<span class="ident">_status</span>, <span class="ident">state</span>) <span class="op">=</span> <span class="ident">Session::get_changes</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">res</span>);
<span class="kw">let</span> <span class="ident">changes</span>: <span class="ident">Vec</span><span class="op"><</span><span class="kw">_</span><span class="op">></span> <span class="op">=</span> <span class="ident">state</span>.<span class="ident">collect</span>();
<span class="macro">assert_eq!</span>(<span class="ident">changes</span>, [(<span class="string">"key2"</span>.<span class="ident">to_string</span>(), <span class="string">"\"value2\""</span>.<span class="ident">to_string</span>())]);
}
<span class="attribute">#[<span class="ident">test</span>]</span>
<span class="kw">fn</span> <span class="ident">get_session</span>() {
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">req</span> <span class="op">=</span> <span class="ident">test::TestRequest::default</span>().<span class="ident">to_srv_request</span>();
<span class="ident">Session::set_session</span>(
<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">req</span>,
<span class="macro">vec!</span>[(<span class="string">"key"</span>.<span class="ident">to_string</span>(), <span class="ident">serde_json::to_string</span>(<span class="kw-2">&</span><span class="bool-val">true</span>).<span class="ident">unwrap</span>())],
);
<span class="kw">let</span> <span class="ident">session</span> <span class="op">=</span> <span class="ident">req</span>.<span class="ident">get_session</span>();
<span class="kw">let</span> <span class="ident">res</span> <span class="op">=</span> <span class="ident">session</span>.<span class="ident">get</span>(<span class="string">"key"</span>).<span class="ident">unwrap</span>();
<span class="macro">assert_eq!</span>(<span class="ident">res</span>, <span class="prelude-val">Some</span>(<span class="bool-val">true</span>));
}
<span class="attribute">#[<span class="ident">test</span>]</span>
<span class="kw">fn</span> <span class="ident">get_session_from_request_head</span>() {
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">req</span> <span class="op">=</span> <span class="ident">test::TestRequest::default</span>().<span class="ident">to_srv_request</span>();
<span class="ident">Session::set_session</span>(
<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">req</span>,
<span class="macro">vec!</span>[(<span class="string">"key"</span>.<span class="ident">to_string</span>(), <span class="ident">serde_json::to_string</span>(<span class="kw-2">&</span><span class="number">10</span>).<span class="ident">unwrap</span>())],
);
<span class="kw">let</span> <span class="ident">session</span> <span class="op">=</span> <span class="ident">req</span>.<span class="ident">head_mut</span>().<span class="ident">get_session</span>();
<span class="kw">let</span> <span class="ident">res</span> <span class="op">=</span> <span class="ident">session</span>.<span class="ident">get</span>::<span class="op"><</span><span class="ident">u32</span><span class="op">></span>(<span class="string">"key"</span>).<span class="ident">unwrap</span>();
<span class="macro">assert_eq!</span>(<span class="ident">res</span>, <span class="prelude-val">Some</span>(<span class="number">10</span>));
}
<span class="attribute">#[<span class="ident">test</span>]</span>
<span class="kw">fn</span> <span class="ident">purge_session</span>() {
<span class="kw">let</span> <span class="ident">req</span> <span class="op">=</span> <span class="ident">test::TestRequest::default</span>().<span class="ident">to_srv_request</span>();
<span class="kw">let</span> <span class="ident">session</span> <span class="op">=</span> <span class="ident">Session::get_session</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="kw-2">*</span><span class="ident">req</span>.<span class="ident">extensions_mut</span>());
<span class="macro">assert_eq!</span>(<span class="ident">session</span>.<span class="number">0</span>.<span class="ident">borrow</span>().<span class="ident">status</span>, <span class="ident">SessionStatus::Unchanged</span>);
<span class="ident">session</span>.<span class="ident">purge</span>();
<span class="macro">assert_eq!</span>(<span class="ident">session</span>.<span class="number">0</span>.<span class="ident">borrow</span>().<span class="ident">status</span>, <span class="ident">SessionStatus::Purged</span>);
}
<span class="attribute">#[<span class="ident">test</span>]</span>
<span class="kw">fn</span> <span class="ident">renew_session</span>() {
<span class="kw">let</span> <span class="ident">req</span> <span class="op">=</span> <span class="ident">test::TestRequest::default</span>().<span class="ident">to_srv_request</span>();
<span class="kw">let</span> <span class="ident">session</span> <span class="op">=</span> <span class="ident">Session::get_session</span>(<span class="kw-2">&</span><span class="kw-2">mut</span> <span class="kw-2">*</span><span class="ident">req</span>.<span class="ident">extensions_mut</span>());
<span class="macro">assert_eq!</span>(<span class="ident">session</span>.<span class="number">0</span>.<span class="ident">borrow</span>().<span class="ident">status</span>, <span class="ident">SessionStatus::Unchanged</span>);
<span class="ident">session</span>.<span class="ident">renew</span>();
<span class="macro">assert_eq!</span>(<span class="ident">session</span>.<span class="number">0</span>.<span class="ident">borrow</span>().<span class="ident">status</span>, <span class="ident">SessionStatus::Renewed</span>);
}
<span class="attribute">#[<span class="ident">test</span>]</span>
<span class="kw">fn</span> <span class="ident">session_entries</span>() {
<span class="kw">let</span> <span class="ident">session</span> <span class="op">=</span> <span class="ident">Session</span>(<span class="ident">Rc::new</span>(<span class="ident">RefCell::new</span>(<span class="ident">SessionInner::default</span>())));
<span class="ident">session</span>.<span class="ident">insert</span>(<span class="string">"test_str"</span>, <span class="string">"val"</span>).<span class="ident">unwrap</span>();
<span class="ident">session</span>.<span class="ident">insert</span>(<span class="string">"test_num"</span>, <span class="number">1</span>).<span class="ident">unwrap</span>();
<span class="kw">let</span> <span class="ident">map</span> <span class="op">=</span> <span class="ident">session</span>.<span class="ident">entries</span>();
<span class="ident">map</span>.<span class="ident">contains_key</span>(<span class="string">"test_str"</span>);
<span class="ident">map</span>.<span class="ident">contains_key</span>(<span class="string">"test_num"</span>);
}
}
</pre></div>
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