AWS Rust SDKを使ってAssume Roleする方法

use aws_config::default_provider::credentials::DefaultCredentialsChain;
use aws_config::sts::AssumeRoleProvider;
use aws_types::region::Region;

#[tokio::main]
async fn main() {
    let credentials_provider = DefaultCredentialsChain::builder().build().await;

    let assume_role_arn = "TARGET_ROLE_ARN";

    let assume_role_provider = AssumeRoleProvider::builder(assume_role_arn)
        .region(Region::new("ap-northeast-1"))
        .build(credentials_provider);

    let aws_config = aws_config::from_env()
        .region("ap-northeast-1")
        .credentials_provider(assume_role_provider)
        .load()
        .await;

    let client = aws_sdk_route53::Client::new(&aws_config);

    let hosted_zones = client.list_hosted_zones().send().await.unwrap();

    for hz in hosted_zones.hosted_zones.unwrap() {
        println!("{}", hz.name.unwrap());
    }
}