Scheduler state or data shared across the jobs

[vsavovski]

It would be nice to add a feature for sharing app state across the jobs, something similar like https://docs.rs/actix-web/4.4.1/actix_web/web/struct.Data.html

// This struct represents state
struct SchedulerState {
    config: AppConfig,
    email: EmailClient,
    http: HttpClient,
}

#[tokio::main]
async fn main() {
    let subscriber = FmtSubscriber::builder()
        .with_max_level(Level::TRACE)
        .finish();
    tracing::subscriber::set_global_default(subscriber).expect("Setting default subscriber failed");
    let sched = JobScheduler::new().await.unwrap();


    let state = Arc::new(SchedulerState::new();
    sched.add_data(state.clone());


    run_example(sched).await;
}

pub fn get_ip_job() -> Result<Job, JobSchedulerError> {
    Job::new_one_shot_async(Duration::from_secs(0), move |_uuid, l| {
        let http = l.data.http.clone();

        Box::pin(async move {
            let resp = http
                .get("https://httpbin.org/ip")
                .send()
                .await
                .unwrap()
                .json::<HashMap<String, String>>()
                .await
                .unwrap();
            info!("{:?}", resp);
        })
    })
}

[burkematthew]

Totally agree. I'd love the ability to build a single database pool that is shared across jobs. I can't seem to do that today without creating a unique database pool for each Job, which I don't really want to do.