#![recursion_limit = "256"]
use std::time::Duration;
use tokio::time::timeout;
use ydb::{ClientBuilder, StaticCredentials, YdbError, YdbResult};
#[tokio::main]
async fn main() -> YdbResult<()> {
println!("create client...");
let client =
ClientBuilder::new_from_connection_string("grpc://localhost:2136/local".to_string())
.unwrap()
.with_credentials(StaticCredentials::new(
"root".to_string(),
"1234".to_string(),
http::uri::Uri::from_static("grpc://localhost:2136/local"),
"local".to_string(),
))
.client()?;
match timeout(Duration::from_secs(3), client.wait()).await {
Ok(res) => res?,
_ => {
return Err(YdbError::from("Connection timeout"));
}
};
println!("created\nmake a query...");
let mut row = client
.query_client()
.query_row("SELECT 14 * 3 AS product")
.await?;
let product: i32 = row.remove_field_by_name("product")?.try_into()?;
println!("product: {product}");
Ok(())
}