Wie man die CPU Nutzung eines Docker Container ermittelt in Rust

                          
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                        // Required crate: bollard, tokio
// Full tokio runtime should be enabled in Cargo.toml
use bollard::Docker;
use bollard::container::{StatsOptions, Stats};
use futures_util::stream::StreamExt;

#[tokio::main]
async fn main() {
    let docker = Docker::connect_with_unix_defaults().unwrap();

    let stats_options = StatsOptions {
        stream: false,
        one_shot: true
    };
    let mut stats_stream = docker.stats("container_name", Some(stats_options));
    if let Some(stats_result) = stats_stream.next().await {
        let stats = stats_result.unwrap();
        let cpu_stats = &stats.cpu_stats;
        let pre_cpu_stats = &stats.precpu_stats;
        let cpu_delta = cpu_stats.cpu_usage.total_usage - pre_cpu_stats.cpu_usage.total_usage;
        let system_delta = cpu_stats.system_cpu_usage.unwrap_or(0) - pre_cpu_stats.system_cpu_usage.unwrap_or(0);
        let number_of_cores = cpu_stats.online_cpus.unwrap_or(0);
        let cpu_percent = if system_delta > 0 && cpu_delta > 0 {
            (cpu_delta as f64 / system_delta as f64) * number_of_cores as f64 * 100.0
        } else {
            0.0
        };

        println!("CPU Usage: {:.2}%", cpu_percent);
    }
}