surrealpatch/sdk/examples/concurrency/main.rs
2024-08-22 10:26:03 +00:00

38 lines
827 B
Rust

use once_cell::sync::Lazy;
use surrealdb::engine::remote::ws::Client;
use surrealdb::engine::remote::ws::Ws;
use surrealdb::Surreal;
use tokio::sync::mpsc;
static DB: Lazy<Surreal<Client>> = Lazy::new(Surreal::init);
const NUM: usize = 100_000;
#[tokio::main]
async fn main() -> surrealdb::Result<()> {
DB.connect::<Ws>("localhost:8000").with_capacity(NUM).await?;
DB.use_ns("namespace").use_db("database").await?;
let (tx, mut rx) = mpsc::channel::<()>(1);
for idx in 0..NUM {
let sender = tx.clone();
tokio::spawn(async move {
let mut result = DB.query("SELECT * FROM $idx").bind(("idx", idx)).await.unwrap();
let db_idx: Option<usize> = result.take(0).unwrap();
if let Some(db_idx) = db_idx {
println!("{idx}: {db_idx}");
}
drop(sender);
});
}
drop(tx);
rx.recv().await;
Ok(())
}