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Table of Contents
SDK methodsnew

new()

Connects to a local or remote database endpoint.

Method Syntax
Surreal::new::<T>(address)

Arguments

ArgumentDescription
endpoint

The database endpoint to connect to.

Example usage

Basic example

use surrealdb::engine::remote::ws::Ws;
use surrealdb::Surreal;

#[tokio::main]
async fn main() -> surrealdb::Result<()> {
    let db = Surreal::new::<Ws>("127.0.0.1:8000").await?;
    Ok(())
}

Configuring the database

The new() function takes an argument of impl IntoEndpoint, which is implemented not only for strings and string-like structs like PathBuf and SocketAddr, but also a tuple of one of these types for the address along with a second Config struct for the configuration.

Example with all capabilities enabled except one function
use surrealdb::{Error, engine::any::connect, opt::{Config, capabilities::Capabilities}};

#[tokio::main]
async fn main() -> Result<(), Error> {
    let mut capabilities = Capabilities::all();
    capabilities.deny_function("math::abs").unwrap();
    let config = Config::default()
        .capabilities(capabilities);
    let db = connect(("mem://", config)).await?;

    db.use_ns("main").use_db("main").await?;

    // Result: "Function 'math::abs' is not allowed to be executed"
    println!("{:?}", db.query("math::abs(-10)").await?);

    Ok(())
}

Using SurrealKV with versioning

To make a new connection that includes SurrealKV versioning, add the “kv-surrealkv” feature flag to the surrealdb dependency in Cargo.toml, add the path to the folder containing the database inside new(), and call the .versioned() method.

use surrealdb::{Surreal, engine::local::SurrealKv};

#[tokio::main]
async fn main() -> surrealdb::Result<()> {
    let db = Surreal::new::<SurrealKv>("path/to/database-folder")
        .versioned()
        .await?;
    Ok(())
}

See also