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use std::{collections::HashMap, sync::Arc};
use futures::Stream;
use http::Http;
use serde::Deserialize;
use systemd::Systemd;
use tcp::Tcp;
use tokio::{
sync::watch::{channel, Receiver, Sender},
task::JoinHandle,
};
use tokio_stream::wrappers::WatchStream;
use crate::{Error, Status};
pub mod http;
pub mod systemd;
pub mod tcp;
pub type ServiceHandles = Arc<HashMap<String, ServiceHandle>>;
pub trait ServiceSpawner {
fn spawn(
self,
tx: Sender<Status>,
) -> impl std::future::Future<Output = Result<(), Error>> + std::marker::Send + 'static;
}
#[derive(Debug)]
pub struct ServiceHandle {
pub handle: JoinHandle<Result<(), Error>>,
pub rx: Receiver<Status>,
}
impl ServiceHandle {
pub fn new(service: impl ServiceSpawner) -> Self {
let (tx, rx) = channel(Status::Error(None));
let handle = tokio::spawn(service.spawn(tx));
Self { handle, rx }
}
pub fn status(&self) -> Status {
self.rx.borrow().clone()
}
pub fn into_stream(&self) -> impl Stream<Item = Status> {
WatchStream::new(self.rx.clone())
}
}
#[derive(Debug, Clone, Deserialize)]
#[serde(untagged)]
pub enum Service {
Http(Http),
Tcp(Tcp),
Systemd(Systemd),
}
impl From<Service> for ServiceHandle {
fn from(value: Service) -> Self {
match value {
Service::Http(s) => ServiceHandle::new(s),
Service::Tcp(s) => ServiceHandle::new(s),
Service::Systemd(s) => ServiceHandle::new(s),
}
}
}
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