Axum Session

`axum_session` provide's a Session management middleware that stores all session data within a MemoryStore internally. It can also save data to an optional persistent database. It uses a Cookie inserted UUID to sync back to the memory store. Formally known as Axum Database Sessions.

• Cookies only Store a Generated Session UUID and a Storable Boolean.
• Uses a DatabasePool Trait so you can implement your own Sub Storage Layer.
• Convenient API for Session no need to mark as Read or Write making Usage Easier.
• Uses dashmap for internal memory lookup and storage to achieve high throughput.
• Uses Serdes for Data Serialization so it can store any Serdes supported type's into the Sessions data.
• Supports Redis, SurrealDB and SQLx optional Databases out of the Box.
• Supports Memory Only usage. No need to use a persistant database.
• Supports Per Session SessionID cookie Encryption for enhanced Security.
• Supports SessionID renewal for enhanced Security.
• Optional Fastbloom key storage for reduced Database lookups during new UUID generation. Boosting Bandwidth.

Help

If you need help with this library or have suggestions please go to our Discord Group

Install

Axum Session uses [tokio]. By Default Axum Session uses postgres-rustls so if you need tokio native TLS please add default-features = false to your cargo include for Axum Session.

```toml

Cargo.toml

[dependencies]

Postgres + rustls

axum_session = { version = "0.3.0", features = [ "postgres-rustls"] } ```

Cargo Feature Flags

default: [postgres-rustls]

key-store: Enabled the optional key storage. Will increase ram usage based on Fastbloom settings.

sqlite-rustls: Sqlx 0.7.0 support for the self-contained SQLite database engine and rustls.

sqlite-native: Sqlx 0.7.0 support for the self-contained SQLite database engine and native-tls.

postgres-rustls: Sqlx 0.7.0 support for the Postgres database server and rustls.

postgres-native: Sqlx 0.7.0 support for the Postgres database server and native-tls.

mysql-rustls: Sqlx 0.7.0 support for the MySQL/MariaDB database server and rustls.

mysql-native: Sqlx 0.7.0 support for the MySQL/MariaDB database server and native-tls.

redis-db: redis 0.23.0 session support.

surrealdb-rocksdb: surrealdb 1.0.0-beta.9 support for rocksdb.

surrealdb-tikv : surrealdb 1.0.0-beta.9 support for tikv.

surrealdb-indxdb : surrealdb 1.0.0-beta.9 support for indxdb.

surrealdb-fdb-?_? : surrealdb 1.0.0-beta.9 support for fdb versions 51, 52, 60, 61, 62, 63, 70, 71. Replace ?_? with version.

surrealdb-mem : surrealdb 1.0.0-beta.9 support for mem.

Example

```rust ignore use sqlx::{ConnectOptions, postgres::{PgPoolOptions, PgConnectOptions}}; use std::net::SocketAddr; use axum_session::{Session, SessionPgPool, SessionConfig, SessionStore, SessionLayer}; use axum::{ Router, routing::get, };

[tokio::main]

async fn main() {

let poll = connect_to_database().await.unwrap();

//This Defaults as normal Cookies.
//To enable Private cookies for integrity, and authenticity please check the next Example.
let session_config = SessionConfig::default()
    .with_table_name("sessions_table");

let session_store = SessionStore::<SessionPgPool>::new(Some(poll.clone().into()), session_config).await.unwrap();

//Create the Database table for storing our Session Data.
session_store.initiate().await.unwrap();

// build our application with some routes
let app = Router::new()
    .route("/greet", get(greet))
    .layer(SessionLayer::new(session_store));

// run it
let addr = SocketAddr::from(([127, 0, 0, 1], 3000));
tracing::debug!("listening on {}", addr);
axum::Server::bind(&addr)
    .serve(app.into_make_service())
    .await
    .unwrap();

}

async fn greet(session: Session) -> String { let mut count: usize = session.get("count").unwrap_or(0);

count += 1;
session.set("count", count);

count.to_string()

}

async fn connecttodatabase() -> anyhow::Result> { // ... unimplemented!() } ```

To enable private cookies for confidentiality, integrity, and authenticity. When a Key is set it will automatically set the Cookie into an encypted Private cookie which both protects the cookies data from prying eye's it also ensures the authenticity of the cookie.

Example

```rust ignore use sqlx::{ConnectOptions, postgres::{PgPoolOptions, PgConnectOptions}}; use std::net::SocketAddr; use axum_session::{Session, SessionPgPool, SessionConfig, SessionStore, SessionLayer, SessionMode, Key, SecurityMode}; use axum::{ Router, routing::get, };

[tokio::main]

async fn main() { let sessionconfig = SessionConfig::default() .withtablename("sessionstable") // 'Key::generate()' will generate a new key each restart of the server. // If you want it to be more permanent then generate and set it to a config file. // If withkey() is used it will set all cookies as private, which guarantees integrity, and authenticity. .withkey(Key::generate()) // This is how we would Set a Database Key to encrypt as store our per session keys. // This MUST be set in order to use SecurityMode::PerSession. .withdatabasekey(Key::generate()) // This is How you will enable PerSession SessionID Private Cookie Encryption. When enabled it will // Encrypt the SessionID and Storage with an Encryption key generated and stored per session. // This allows for Key renewing without needing to force the entire Session from being destroyed. // This Also helps prevent impersonation attempts. .withsecuritymode(SecurityMode::PerSession);

let session_store = SessionStore::<SessionPgPool>::new(None, session_config).await.unwrap();
session_store.initiate().await.unwrap();

// build our application with some routes
let app = Router::new()
    .route("/greet", get(greet))
    .layer(SessionLayer::new(session_store));

// run it
let addr = SocketAddr::from(([127, 0, 0, 1], 3000));
tracing::debug!("listening on {}", addr);
axum::Server::bind(&addr)
    .serve(app.into_make_service())
    .await
    .unwrap();

} ```

To use axumsession in nonpersistant mode Set the client to None and import SessionNullPool. SessionNullPool is always loaded and can be used where you do not want to include any database within the build.

Example

```rust ignore use sqlx::{ConnectOptions, postgres::{PgPoolOptions, PgConnectOptions}}; use std::net::SocketAddr; use axum_session::{Session, SessionNullPool, SessionConfig, SessionStore, SessionLayer}; use axum::{ Router, routing::get, };

[tokio::main]

async fn main() { let sessionconfig = SessionConfig::default() .withtablename("sessionstable");

let session_store = SessionStore::<SessionNullPool>::new(None, session_config).await.unwrap();

// build our application with some routes
let app = Router::new()
    .route("/greet", get(greet))
    .layer(SessionLayer::new(session_store));

// run it
let addr = SocketAddr::from(([127, 0, 0, 1], 3000));
tracing::debug!("listening on {}", addr);
axum::Server::bind(&addr)
    .serve(app.into_make_service())
    .await
    .unwrap();

}

async fn greet(session: Session) -> String { let mut count: usize = session.get("count").unwrap_or(0);

count += 1;
session.set("count", count);

count.to_string()

}

```

To use axum_session with session mode set as Storable.

Example

```rust ignore use sqlx::{ConnectOptions, postgres::{PgPoolOptions, PgConnectOptions}}; use std::net::SocketAddr; use axum_session::{Session, SessionPgPool, SessionConfig, SessionStore, SessionLayer, SessionMode}; use axum::{ Router, routing::get, };

[tokio::main]

async fn main() { let sessionconfig = SessionConfig::default() .withtablename("sessionstable").with_mode(SessionMode::Storable);

let session_store = SessionStore::<SessionPgPool>::new(None, session_config).await.unwrap();
session_store.initiate().await.unwrap();

// build our application with some routes
let app = Router::new()
    .route("/greet", get(greet))
    .layer(SessionLayer::new(session_store));

// run it
let addr = SocketAddr::from(([127, 0, 0, 1], 3000));
tracing::debug!("listening on {}", addr);
axum::Server::bind(&addr)
    .serve(app.into_make_service())
    .await
    .unwrap();

}

//No need to set the sessions accepted or not with gdpr mode disabled async fn greet(session: Session) -> String { let mut count: usize = session.get("count").unwrap_or(0);

// Allow the Session data to be keep in memory and the database for the lifetime.
session.set_store(true);
count += 1;
session.set("count", count);

count.to_string()

}

```

To enable and use fastbloom key storage for less database lookups. Add the feature "key-store" to the crate’s features. This feature will increase the ram usage server side. but will heavily improve the bandwidth limitations and reduce latency of returns from the server. This is based on how much the filter_expected_elements and filter_false_positive_probability are set too. The higher they are the more ram is used. You will also need to Enable the bloom filter in the config for it to be used. By default, the use_bloom_filters is enabled and these config options exist whither or not the feature is enabled. Please refer to with_filter_expected_elements and with_filter_false_positive_probability within the documents to set the options. Otherwise stick with the default settings which should work in most situations. Just do note these options provide on how many False positives could possibly occur when comparing a UUID to what currently exists, which means it will keep trying till it finds none that match. Higher values decrease the chance of a false positive but increase ram usage.

Session Login and Authentication via axum_session_auth

For user login, login caching and authentication please see axum_session_auth.