[RUST/TOKIO] tokio 크레이트를 사용해 반환값을 갖는 비동기 처리하기

icodebroker TOKIO 2024-06-18

■ tokio 크레이트를 사용해 반환값을 갖는 비동기 처리를 하는 방법을 보여준다.

▶ Cargo.toml


[package]
name = "test_project"
version = "0.1.0"
edition = "2021"

[dependencies]
tokio = { version = "1", features = ["full"] }

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[package]

name = "test_project"

version = "0.1.0"

edition = "2021"

[dependencies]

tokio = { version = "1", features = ["full"] }

▶ src/main.rs


use tokio::time;

#[tokio::main]
async fn main()
{
    for i in 1..=3
    {
        println!("#{} START TO GET MESSAGE", i);

        let message : String = get_message_async(i).await;

        println!("{}", message);
    }
}

async fn get_message_async(value : i32) -> String
{
    time::sleep(time::Duration::from_secs(1)).await;

    return String::from(format!("MESSAGE {}", value));
}

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use tokio::time;

#[tokio::main]

async fn main()

{

for i in 1..=3

{

println!("#{} START TO GET MESSAGE", i);

let message : String = get_message_async(i).await;

println!("{}", message);

}

async fn get_message_async(value : i32) -> String

{

time::sleep(time::Duration::from_secs(1)).await;

return String::from(format!("MESSAGE {}", value));

}

test_project.zip