You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: shared-lease.rs
    path of file: ./repos/kube-leader-election/examples
    
    the code of the file until where you have to start completion: use kube_leader_election::{LeaseLock, LeaseLockParams};
use rand::distributions::Alphanumeric;
use rand::Rng;
use std::sync::atomic::{AtomicBool, Ordering};
use std::sync::Arc;
use std::time::Duration;

#[tokio::main]
async fn main() -> anyhow::Result<()> {
    std::env::set_var(
        "RUST_LOG",
        std::env::var("RUST_LOG").unwrap_or_else(|_| "info".to_string()),
    );
    env_logger::init();

    // Shared across the application to allow other parts to determine if they can act as leader
    let is_leader = Arc::new(AtomicBool
    
async fn main() -> anyhow::Result<()> {
    std::env::set_var(
        "RUST_LOG",
        std::env::var("RUST_LOG").unwrap_or_else(|_| "info".to_string()),
    );
    env_logger::init();

    // Shared across the application to allow other parts to determine if they can act as leader
    let is_leader = Arc::new(AtomicBool::new(false));

    // Run leader election as background process
    {
        let is_leader = is_leader.clone();

        tokio::spawn(async move {
            let client = kube::Client::try_default().await.unwrap();

            // random id part for the sake of simulating something like a pod hash
            let random: String = rand::thread_rng()
                .sample_iter(&Alphanumeric)
                .take(7)
                .map(char::from)
                .collect();
            let holder_id = format!("shared-lease-{}", random.to_lowercase());

            let leadership = LeaseLock::new(
                client,
                "default",
                LeaseLockParams {
                    holder_id,
                    lease_name: "shared-lease-example".into(),
                    lease_ttl: Duration::from_secs(15),
                },
            );

            loop {
                match leadership.try_acquire_or_renew().await {
                    Ok(ll) => is_leader.store(ll.acquired_lease, Ordering::Relaxed),
                    Err(err) => log::error!("{:?}", err),
                }
                tokio::time::sleep(Duration::from_secs(5)).await;
            }
        });
    }

    loop {
        log::info!("currently leading: {}", is_leader.load(Ordering::Relaxed));
        tokio::time::sleep(Duration::from_secs(5)).await;
    }
}