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</pre><pre class="rust"><code><span class="kw">use</span> <span class="ident">std::sync::Arc</span>;
<span class="kw">use</span> <span class="ident">redis</span>::{<span class="ident">aio::ConnectionManager</span>, <span class="ident">AsyncCommands</span>, <span class="ident">Value</span>};
<span class="kw">use</span> <span class="ident">time</span>::{<span class="self">self</span>, <span class="ident">Duration</span>};
<span class="kw">use</span> <span class="ident"><span class="kw">super</span>::SessionKey</span>;
<span class="kw">use</span> <span class="ident"><span class="kw">crate</span>::storage</span>::{
<span class="ident">interface</span>::{<span class="ident">LoadError</span>, <span class="ident">SaveError</span>, <span class="ident">SessionState</span>, <span class="ident">UpdateError</span>},
<span class="ident">utils::generate_session_key</span>,
<span class="ident">SessionStore</span>,
};
<span class="doccomment">/// Use Redis as session storage backend.</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::{SessionMiddleware, storage::RedisSessionStore};</span>
<span class="doccomment">/// use actix_web::cookie::Key;</span>
<span class="doccomment">///</span>
<span class="doccomment">/// // The secret key would usually be read from a configuration file/environment variables.</span>
<span class="doccomment">/// fn get_secret_key() -> Key {</span>
<span class="doccomment">/// # todo!()</span>
<span class="doccomment">/// // [...]</span>
<span class="doccomment">/// }</span>
<span class="doccomment">///</span>
<span class="doccomment">/// #[actix_web::main]</span>
<span class="doccomment">/// async fn main() -> std::io::Result<()> {</span>
<span class="doccomment">/// let secret_key = get_secret_key();</span>
<span class="doccomment">/// let redis_connection_string = "redis://127.0.0.1:6379";</span>
<span class="doccomment">/// let store = RedisSessionStore::new(redis_connection_string).await.unwrap();</span>
<span class="doccomment">/// HttpServer::new(move ||</span>
<span class="doccomment">/// App::new()</span>
<span class="doccomment">/// .wrap(SessionMiddleware::new(</span>
<span class="doccomment">/// store.clone(),</span>
<span class="doccomment">/// secret_key.clone()</span>
<span class="doccomment">/// ))</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="doccomment">///</span>
<span class="doccomment">/// # TLS support</span>
<span class="doccomment">/// Add the `redis-rs-tls-session` feature flag to enable TLS support. You can then establish a TLS</span>
<span class="doccomment">/// connection to Redis using the `rediss://` URL scheme:</span>
<span class="doccomment">///</span>
<span class="doccomment">/// ```no_run</span>
<span class="doccomment">/// use actix_session::{storage::RedisSessionStore};</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # actix_web::rt::System::new().block_on(async {</span>
<span class="doccomment">/// let redis_connection_string = "rediss://127.0.0.1:6379";</span>
<span class="doccomment">/// let store = RedisSessionStore::new(redis_connection_string).await.unwrap();</span>
<span class="doccomment">/// # })</span>
<span class="doccomment">/// ```</span>
<span class="doccomment">///</span>
<span class="doccomment">/// # Implementation notes</span>
<span class="doccomment">/// `RedisSessionStore` leverages [`redis-rs`] as Redis client.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// [`redis-rs`]: https://github.com/mitsuhiko/redis-rs</span>
<span class="attribute">#[<span class="ident">cfg_attr</span>(<span class="ident">docsrs</span>, <span class="ident">doc</span>(<span class="ident">cfg</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"redis-rs-session"</span>)))]</span>
<span class="attribute">#[<span class="ident">derive</span>(<span class="ident">Clone</span>)]</span>
<span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">RedisSessionStore</span> {
<span class="ident">configuration</span>: <span class="ident">CacheConfiguration</span>,
<span class="ident">client</span>: <span class="ident">ConnectionManager</span>,
}
<span class="attribute">#[<span class="ident">derive</span>(<span class="ident">Clone</span>)]</span>
<span class="kw">struct</span> <span class="ident">CacheConfiguration</span> {
<span class="ident">cache_keygen</span>: <span class="ident">Arc</span><span class="op"><</span><span class="kw">dyn</span> <span class="ident">Fn</span>(<span class="kw-2">&</span><span class="ident">str</span>) -> <span class="ident">String</span> <span class="op">+</span> <span class="ident">Send</span> <span class="op">+</span> <span class="ident">Sync</span><span class="op">></span>,
}
<span class="kw">impl</span> <span class="ident">Default</span> <span class="kw">for</span> <span class="ident">CacheConfiguration</span> {
<span class="kw">fn</span> <span class="ident">default</span>() -> <span class="self">Self</span> {
<span class="self">Self</span> {
<span class="ident">cache_keygen</span>: <span class="ident">Arc::new</span>(<span class="ident">str::to_owned</span>),
}
}
}
<span class="kw">impl</span> <span class="ident">RedisSessionStore</span> {
<span class="doccomment">/// A fluent API to configure [`RedisSessionStore`].</span>
<span class="doccomment">/// It takes as input the only required input to create a new instance of [`RedisSessionStore`] - a</span>
<span class="doccomment">/// connection string for Redis.</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">builder</span><span class="op"><</span><span class="ident">S</span>: <span class="ident">Into</span><span class="op"><</span><span class="ident">String</span><span class="op">></span><span class="op">></span>(<span class="ident">connection_string</span>: <span class="ident">S</span>) -> <span class="ident">RedisSessionStoreBuilder</span> {
<span class="ident">RedisSessionStoreBuilder</span> {
<span class="ident">configuration</span>: <span class="ident">CacheConfiguration::default</span>(),
<span class="ident">connection_string</span>: <span class="ident">connection_string</span>.<span class="ident">into</span>(),
}
}
<span class="doccomment">/// Create a new instance of [`RedisSessionStore`] using the default configuration.</span>
<span class="doccomment">/// It takes as input the only required input to create a new instance of [`RedisSessionStore`] - a</span>
<span class="doccomment">/// connection string for Redis.</span>
<span class="kw">pub</span> <span class="kw">async</span> <span class="kw">fn</span> <span class="ident">new</span><span class="op"><</span><span class="ident">S</span>: <span class="ident">Into</span><span class="op"><</span><span class="ident">String</span><span class="op">></span><span class="op">></span>(
<span class="ident">connection_string</span>: <span class="ident">S</span>,
) -> <span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">RedisSessionStore</span>, <span class="ident">anyhow::Error</span><span class="op">></span> {
<span class="ident"><span class="self">Self</span>::builder</span>(<span class="ident">connection_string</span>).<span class="ident">build</span>().<span class="kw">await</span>
}
}
<span class="doccomment">/// A fluent builder to construct a [`RedisSessionStore`] instance with custom configuration</span>
<span class="doccomment">/// parameters.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// [`RedisSessionStore`]: crate::storage::RedisSessionStore</span>
<span class="attribute">#[<span class="ident">cfg_attr</span>(<span class="ident">docsrs</span>, <span class="ident">doc</span>(<span class="ident">cfg</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"redis-rs-session"</span>)))]</span>
<span class="attribute">#[<span class="ident">must_use</span>]</span>
<span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">RedisSessionStoreBuilder</span> {
<span class="ident">connection_string</span>: <span class="ident">String</span>,
<span class="ident">configuration</span>: <span class="ident">CacheConfiguration</span>,
}
<span class="kw">impl</span> <span class="ident">RedisSessionStoreBuilder</span> {
<span class="doccomment">/// Set a custom cache key generation strategy, expecting a session key as input.</span>
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">cache_keygen</span><span class="op"><</span><span class="ident">F</span><span class="op">></span>(<span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">keygen</span>: <span class="ident">F</span>) -> <span class="self">Self</span>
<span class="kw">where</span>
<span class="ident">F</span>: <span class="ident">Fn</span>(<span class="kw-2">&</span><span class="ident">str</span>) -> <span class="ident">String</span> <span class="op">+</span> <span class="lifetime">'static</span> <span class="op">+</span> <span class="ident">Send</span> <span class="op">+</span> <span class="ident">Sync</span>,
{
<span class="self">self</span>.<span class="ident">configuration</span>.<span class="ident">cache_keygen</span> <span class="op">=</span> <span class="ident">Arc::new</span>(<span class="ident">keygen</span>);
<span class="self">self</span>
}
<span class="doccomment">/// Finalise the builder and return a [`RedisActorSessionStore`] instance.</span>
<span class="doccomment">///</span>
<span class="doccomment">/// [`RedisActorSessionStore`]: crate::storage::RedisActorSessionStore</span>
<span class="kw">pub</span> <span class="kw">async</span> <span class="kw">fn</span> <span class="ident">build</span>(<span class="self">self</span>) -> <span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">RedisSessionStore</span>, <span class="ident">anyhow::Error</span><span class="op">></span> {
<span class="kw">let</span> <span class="ident">client</span> <span class="op">=</span> <span class="ident">ConnectionManager::new</span>(<span class="ident">redis::Client::open</span>(<span class="self">self</span>.<span class="ident">connection_string</span>)<span class="question-mark">?</span>).<span class="kw">await</span><span class="question-mark">?</span>;
<span class="prelude-val">Ok</span>(<span class="ident">RedisSessionStore</span> {
<span class="ident">configuration</span>: <span class="self">self</span>.<span class="ident">configuration</span>,
<span class="ident">client</span>,
})
}
}
<span class="attribute">#[<span class="ident">async_trait::async_trait</span>(<span class="question-mark">?</span><span class="ident">Send</span>)]</span>
<span class="kw">impl</span> <span class="ident">SessionStore</span> <span class="kw">for</span> <span class="ident">RedisSessionStore</span> {
<span class="kw">async</span> <span class="kw">fn</span> <span class="ident">load</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">session_key</span>: <span class="kw-2">&</span><span class="ident">SessionKey</span>) -> <span class="prelude-ty">Result</span><span class="op"><</span><span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">SessionState</span><span class="op">></span>, <span class="ident">LoadError</span><span class="op">></span> {
<span class="kw">let</span> <span class="ident">cache_key</span> <span class="op">=</span> (<span class="self">self</span>.<span class="ident">configuration</span>.<span class="ident">cache_keygen</span>)(<span class="ident">session_key</span>.<span class="ident">as_ref</span>());
<span class="kw">let</span> <span class="ident">value</span>: <span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">String</span><span class="op">></span> <span class="op">=</span> <span class="self">self</span>
.<span class="ident">client</span>
.<span class="ident">clone</span>()
.<span class="ident">get</span>(<span class="ident">cache_key</span>)
.<span class="kw">await</span>
.<span class="ident">map_err</span>(<span class="ident">Into::into</span>)
.<span class="ident">map_err</span>(<span class="ident">LoadError::Other</span>)<span class="question-mark">?</span>;
<span class="kw">match</span> <span class="ident">value</span> {
<span class="prelude-val">None</span> => <span class="prelude-val">Ok</span>(<span class="prelude-val">None</span>),
<span class="prelude-val">Some</span>(<span class="ident">value</span>) => <span class="prelude-val">Ok</span>(<span class="ident">serde_json::from_str</span>(<span class="kw-2">&</span><span class="ident">value</span>)
.<span class="ident">map_err</span>(<span class="ident">Into::into</span>)
.<span class="ident">map_err</span>(<span class="ident">LoadError::Deserialization</span>)<span class="question-mark">?</span>),
}
}
<span class="kw">async</span> <span class="kw">fn</span> <span class="ident">save</span>(
<span class="kw-2">&</span><span class="self">self</span>,
<span class="ident">session_state</span>: <span class="ident">SessionState</span>,
<span class="ident">ttl</span>: <span class="kw-2">&</span><span class="ident">Duration</span>,
) -> <span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">SessionKey</span>, <span class="ident">SaveError</span><span class="op">></span> {
<span class="kw">let</span> <span class="ident">body</span> <span class="op">=</span> <span class="ident">serde_json::to_string</span>(<span class="kw-2">&</span><span class="ident">session_state</span>)
.<span class="ident">map_err</span>(<span class="ident">Into::into</span>)
.<span class="ident">map_err</span>(<span class="ident">SaveError::Serialization</span>)<span class="question-mark">?</span>;
<span class="kw">let</span> <span class="ident">session_key</span> <span class="op">=</span> <span class="ident">generate_session_key</span>();
<span class="kw">let</span> <span class="ident">cache_key</span> <span class="op">=</span> (<span class="self">self</span>.<span class="ident">configuration</span>.<span class="ident">cache_keygen</span>)(<span class="ident">session_key</span>.<span class="ident">as_ref</span>());
<span class="ident">redis::cmd</span>(<span class="string">"SET"</span>)
.<span class="ident">arg</span>(<span class="kw-2">&</span>[
<span class="kw-2">&</span><span class="ident">cache_key</span>,
<span class="kw-2">&</span><span class="ident">body</span>,
<span class="string">"NX"</span>, <span class="comment">// NX: only set the key if it does not already exist</span>
<span class="string">"EX"</span>, <span class="comment">// EX: set expiry</span>
<span class="kw-2">&</span><span class="macro">format!</span>(<span class="string">"{}"</span>, <span class="ident">ttl</span>.<span class="ident">whole_seconds</span>()),
])
.<span class="ident">query_async</span>(<span class="kw-2">&mut</span> <span class="self">self</span>.<span class="ident">client</span>.<span class="ident">clone</span>())
.<span class="kw">await</span>
.<span class="ident">map_err</span>(<span class="ident">Into::into</span>)
.<span class="ident">map_err</span>(<span class="ident">SaveError::Other</span>)<span class="question-mark">?</span>;
<span class="prelude-val">Ok</span>(<span class="ident">session_key</span>)
}
<span class="kw">async</span> <span class="kw">fn</span> <span class="ident">update</span>(
<span class="kw-2">&</span><span class="self">self</span>,
<span class="ident">session_key</span>: <span class="ident">SessionKey</span>,
<span class="ident">session_state</span>: <span class="ident">SessionState</span>,
<span class="ident">ttl</span>: <span class="kw-2">&</span><span class="ident">Duration</span>,
) -> <span class="prelude-ty">Result</span><span class="op"><</span><span class="ident">SessionKey</span>, <span class="ident">UpdateError</span><span class="op">></span> {
<span class="kw">let</span> <span class="ident">body</span> <span class="op">=</span> <span class="ident">serde_json::to_string</span>(<span class="kw-2">&</span><span class="ident">session_state</span>)
.<span class="ident">map_err</span>(<span class="ident">Into::into</span>)
.<span class="ident">map_err</span>(<span class="ident">UpdateError::Serialization</span>)<span class="question-mark">?</span>;
<span class="kw">let</span> <span class="ident">cache_key</span> <span class="op">=</span> (<span class="self">self</span>.<span class="ident">configuration</span>.<span class="ident">cache_keygen</span>)(<span class="ident">session_key</span>.<span class="ident">as_ref</span>());
<span class="kw">let</span> <span class="ident">v</span>: <span class="ident">redis::Value</span> <span class="op">=</span> <span class="ident">redis::cmd</span>(<span class="string">"SET"</span>)
.<span class="ident">arg</span>(<span class="kw-2">&</span>[
<span class="kw-2">&</span><span class="ident">cache_key</span>,
<span class="kw-2">&</span><span class="ident">body</span>,
<span class="string">"XX"</span>, <span class="comment">// XX: Only set the key if it already exist.</span>
<span class="string">"EX"</span>, <span class="comment">// EX: set expiry</span>
<span class="kw-2">&</span><span class="macro">format!</span>(<span class="string">"{}"</span>, <span class="ident">ttl</span>.<span class="ident">whole_seconds</span>()),
])
.<span class="ident">query_async</span>(<span class="kw-2">&mut</span> <span class="self">self</span>.<span class="ident">client</span>.<span class="ident">clone</span>())
.<span class="kw">await</span>
.<span class="ident">map_err</span>(<span class="ident">Into::into</span>)
.<span class="ident">map_err</span>(<span class="ident">UpdateError::Other</span>)<span class="question-mark">?</span>;
<span class="kw">match</span> <span class="ident">v</span> {
<span class="ident">Value::Nil</span> => {
<span class="comment">// The SET operation was not performed because the XX condition was not verified.</span>
<span class="comment">// This can happen if the session state expired between the load operation and the</span>
<span class="comment">// update operation. Unlucky, to say the least. We fall back to the `save` routine</span>
<span class="comment">// to ensure that the new key is unique.</span>
<span class="self">self</span>.<span class="ident">save</span>(<span class="ident">session_state</span>, <span class="ident">ttl</span>)
.<span class="kw">await</span>
.<span class="ident">map_err</span>(<span class="op">|</span><span class="ident">err</span><span class="op">|</span> <span class="kw">match</span> <span class="ident">err</span> {
<span class="ident">SaveError::Serialization</span>(<span class="ident">err</span>) => <span class="ident">UpdateError::Serialization</span>(<span class="ident">err</span>),
<span class="ident">SaveError::Other</span>(<span class="ident">err</span>) => <span class="ident">UpdateError::Other</span>(<span class="ident">err</span>),
})
}
<span class="ident">Value::Int</span>(<span class="kw">_</span>) <span class="op">|</span> <span class="ident">Value::Okay</span> <span class="op">|</span> <span class="ident">Value::Status</span>(<span class="kw">_</span>) => <span class="prelude-val">Ok</span>(<span class="ident">session_key</span>),
<span class="ident">val</span> => <span class="prelude-val">Err</span>(<span class="ident">UpdateError::Other</span>(<span class="macro">anyhow::anyhow!</span>(
<span class="string">"Failed to update session state. {:?}"</span>,
<span class="ident">val</span>
))),
}
}
<span class="kw">async</span> <span class="kw">fn</span> <span class="ident">delete</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">session_key</span>: <span class="kw-2">&</span><span class="ident">SessionKey</span>) -> <span class="prelude-ty">Result</span><span class="op"><</span>(), <span class="ident">anyhow::Error</span><span class="op">></span> {
<span class="kw">let</span> <span class="ident">cache_key</span> <span class="op">=</span> (<span class="self">self</span>.<span class="ident">configuration</span>.<span class="ident">cache_keygen</span>)(<span class="ident">session_key</span>.<span class="ident">as_ref</span>());
<span class="self">self</span>.<span class="ident">client</span>
.<span class="ident">clone</span>()
.<span class="ident">del</span>(<span class="kw-2">&</span><span class="ident">cache_key</span>)
.<span class="kw">await</span>
.<span class="ident">map_err</span>(<span class="ident">Into::into</span>)
.<span class="ident">map_err</span>(<span class="ident">UpdateError::Other</span>)<span class="question-mark">?</span>;
<span class="prelude-val">Ok</span>(())
}
}
<span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">test</span>)]</span>
<span class="kw">mod</span> <span class="ident">test</span> {
<span class="kw">use</span> <span class="ident">std::collections::HashMap</span>;
<span class="kw">use</span> <span class="ident">redis::AsyncCommands</span>;
<span class="kw">use</span> <span class="kw">super</span>::<span class="kw-2">*</span>;
<span class="kw">use</span> <span class="ident"><span class="kw">crate</span>::test_helpers::acceptance_test_suite</span>;
<span class="kw">async</span> <span class="kw">fn</span> <span class="ident">redis_store</span>() -> <span class="ident">RedisSessionStore</span> {
<span class="ident">RedisSessionStore::new</span>(<span class="string">"redis://127.0.0.1:6379"</span>)
.<span class="kw">await</span>
.<span class="ident">unwrap</span>()
}
<span class="attribute">#[<span class="ident">actix_web::test</span>]</span>
<span class="kw">async</span> <span class="kw">fn</span> <span class="ident">test_session_workflow</span>() {
<span class="kw">let</span> <span class="ident">redis_store</span> <span class="op">=</span> <span class="ident">redis_store</span>().<span class="kw">await</span>;
<span class="ident">acceptance_test_suite</span>(<span class="kw">move</span> <span class="op">|</span><span class="op">|</span> <span class="ident">redis_store</span>.<span class="ident">clone</span>(), <span class="bool-val">true</span>).<span class="kw">await</span>;
}
<span class="attribute">#[<span class="ident">actix_web::test</span>]</span>
<span class="kw">async</span> <span class="kw">fn</span> <span class="ident">loading_a_missing_session_returns_none</span>() {
<span class="kw">let</span> <span class="ident">store</span> <span class="op">=</span> <span class="ident">redis_store</span>().<span class="kw">await</span>;
<span class="kw">let</span> <span class="ident">session_key</span> <span class="op">=</span> <span class="ident">generate_session_key</span>();
<span class="macro">assert!</span>(<span class="ident">store</span>.<span class="ident">load</span>(<span class="kw-2">&</span><span class="ident">session_key</span>).<span class="kw">await</span>.<span class="ident">unwrap</span>().<span class="ident">is_none</span>());
}
<span class="attribute">#[<span class="ident">actix_web::test</span>]</span>
<span class="kw">async</span> <span class="kw">fn</span> <span class="ident">loading_an_invalid_session_state_returns_deserialization_error</span>() {
<span class="kw">let</span> <span class="ident">store</span> <span class="op">=</span> <span class="ident">redis_store</span>().<span class="kw">await</span>;
<span class="kw">let</span> <span class="ident">session_key</span> <span class="op">=</span> <span class="ident">generate_session_key</span>();
<span class="ident">store</span>
.<span class="ident">client</span>
.<span class="ident">clone</span>()
.<span class="ident">set</span>::<span class="op"><</span><span class="kw">_</span>, <span class="kw">_</span>, ()<span class="op">></span>(<span class="ident">session_key</span>.<span class="ident">as_ref</span>(), <span class="string">"random-thing-which-is-not-json"</span>)
.<span class="kw">await</span>
.<span class="ident">unwrap</span>();
<span class="macro">assert!</span>(<span class="macro">matches!</span>(
<span class="ident">store</span>.<span class="ident">load</span>(<span class="kw-2">&</span><span class="ident">session_key</span>).<span class="kw">await</span>.<span class="ident">unwrap_err</span>(),
<span class="ident">LoadError::Deserialization</span>(<span class="kw">_</span>),
));
}
<span class="attribute">#[<span class="ident">actix_web::test</span>]</span>
<span class="kw">async</span> <span class="kw">fn</span> <span class="ident">updating_of_an_expired_state_is_handled_gracefully</span>() {
<span class="kw">let</span> <span class="ident">store</span> <span class="op">=</span> <span class="ident">redis_store</span>().<span class="kw">await</span>;
<span class="kw">let</span> <span class="ident">session_key</span> <span class="op">=</span> <span class="ident">generate_session_key</span>();
<span class="kw">let</span> <span class="ident">initial_session_key</span> <span class="op">=</span> <span class="ident">session_key</span>.<span class="ident">as_ref</span>().<span class="ident">to_owned</span>();
<span class="kw">let</span> <span class="ident">updated_session_key</span> <span class="op">=</span> <span class="ident">store</span>
.<span class="ident">update</span>(<span class="ident">session_key</span>, <span class="ident">HashMap::new</span>(), <span class="kw-2">&</span><span class="ident">time::Duration::seconds</span>(<span class="number">1</span>))
.<span class="kw">await</span>
.<span class="ident">unwrap</span>();
<span class="macro">assert_ne!</span>(<span class="ident">initial_session_key</span>, <span class="ident">updated_session_key</span>.<span class="ident">as_ref</span>());
}
}
</code></pre></div>
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