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use futures::sync::mpsc::UnboundedSender;
use futures::sync::oneshot;
use futures::Future;
use crate::builder::ServerBuilder;
use crate::signals::Signal;
#[derive(Debug)]
pub(crate) enum ServerCommand {
WorkerDied(usize),
Pause(oneshot::Sender<()>),
Resume(oneshot::Sender<()>),
Signal(Signal),
Stop {
graceful: bool,
completion: Option<oneshot::Sender<()>>,
},
}
#[derive(Debug, Clone)]
pub struct Server(UnboundedSender<ServerCommand>);
impl Server {
pub(crate) fn new(tx: UnboundedSender<ServerCommand>) -> Self {
Server(tx)
}
pub fn build() -> ServerBuilder {
ServerBuilder::default()
}
pub(crate) fn signal(&self, sig: Signal) {
let _ = self.0.unbounded_send(ServerCommand::Signal(sig));
}
pub(crate) fn worker_died(&self, idx: usize) {
let _ = self.0.unbounded_send(ServerCommand::WorkerDied(idx));
}
pub fn pause(&self) -> impl Future<Item = (), Error = ()> {
let (tx, rx) = oneshot::channel();
let _ = self.0.unbounded_send(ServerCommand::Pause(tx));
rx.map_err(|_| ())
}
pub fn resume(&self) -> impl Future<Item = (), Error = ()> {
let (tx, rx) = oneshot::channel();
let _ = self.0.unbounded_send(ServerCommand::Resume(tx));
rx.map_err(|_| ())
}
pub fn stop(&self, graceful: bool) -> impl Future<Item = (), Error = ()> {
let (tx, rx) = oneshot::channel();
let _ = self.0.unbounded_send(ServerCommand::Stop {
graceful,
completion: Some(tx),
});
rx.map_err(|_| ())
}
}