Updated batch code example

use batch::Region;

#[tokio::main]

async fn main() -> Result<(), batch::Error> {

    tracing_subscriber::fmt::init();

    let conf = batch::Config::builder()

        .region(Region::new("us-east-2"))

        .build();

    let client = batch::Client::from_conf(conf);

    let rsp = client.describe_compute_environments().send().await?;

    let compute_envs = rsp.compute_environments.unwrap_or_default();

    println!("Compute environments ({}):", compute_envs.len());

    for env in compute_envs {

        let arn = env.compute_environment_arn.as_deref().unwrap_or_default();

        let name = env.compute_environment_name.as_deref().unwrap_or_default();

        println!(

            "  Compute Environment Name : {}, Compute Environment ARN : {}",

            name, arn

        );

    }

    Ok(())

}

[package]

name = "batch-helloworld"

name = "batch-code-examples"

version = "0.1.0"

authors = ["Alistair McLean <mclean@amazon.com>"]

authors = ["Alistair McLean <mclean@amazon.com>", "Doug Schwartz <dougsch@amazon.com>"]

edition = "2018"

# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html

[dependencies]

batch = { package = "aws-sdk-batch", path = "../../build/aws-sdk/batch" }

aws-types = { path = "../../build/aws-sdk/aws-types" }

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

# used only to enable basic logging:

env_logger = "0.8.2"

structopt = { version = "0.3", default-features = false }

tracing-subscriber = "0.2.18"

 No newline at end of file

use aws_types::region::ProvideRegion;

use batch::{Client, Config, Error, Region};

use structopt::StructOpt;

#[derive(Debug, StructOpt)]

struct Opt {

    /// The default AWS Region.

    #[structopt(short, long)]

    default_region: Option<String>,

    /// Whether to display additional information.

    #[structopt(short, long)]

    verbose: bool,

}

/// Lists the names and the ARNs of your batch compute environments in a Region.

/// # Arguments

///

/// * `[-d DEFAULT-REGION]` - The Region in which the client is created.

///   If not supplied, uses the value of the **AWS_REGION** environment variable.

///   If the environment variable is not set, defaults to **us-west-2**.

/// * `[-v]` - Whether to display information.

#[tokio::main]

async fn main() -> Result<(), Error> {

    tracing_subscriber::fmt::init();

    let Opt {

        default_region,

        verbose,

    } = Opt::from_args();

    let region = default_region

        .as_ref()

        .map(|region| Region::new(region.clone()))

        .or_else(|| aws_types::region::default_provider().region())

        .unwrap_or_else(|| Region::new("us-west-2"));

    println!();

    if verbose {

        println!("Batch client version: {}", batch::PKG_VERSION);

        println!("Region:               {:?}", &region);

        println!();

    }

    let conf = Config::builder().region(&region).build();

    let client = Client::from_conf(conf);

    let rsp = client.describe_compute_environments().send().await?;

    let compute_envs = rsp.compute_environments.unwrap_or_default();

    println!("Found {} compute environments:", compute_envs.len());

    for env in compute_envs {

        let arn = env.compute_environment_arn.as_deref().unwrap_or_default();

        let name = env.compute_environment_name.as_deref().unwrap_or_default();

        println!("  Name : {}", name);

        println!("  ARN:   {}", arn);

        println!();

    }

    Ok(())

}