mirror of
https://gitlab.com/fabinfra/fabaccess/bffh.git
synced 2024-11-22 06:47:56 +01:00
Start adding a Future ReturnToken
This commit is contained in:
parent
2db596dad0
commit
131546e150
@ -141,9 +141,10 @@ impl write::give_back::Server for GiveBack {
|
||||
_results: write::give_back::RetResults)
|
||||
-> Promise<(), Error>
|
||||
{
|
||||
println!("I'm doing my part!");
|
||||
if let Some(chan) = self.0.take() {
|
||||
chan.send(())
|
||||
.expect("Other end of GiveBack token was dropped?!");
|
||||
// Err here just means machine was taken from us
|
||||
let _ = chan.send(());
|
||||
}
|
||||
|
||||
Promise::ok(())
|
||||
|
@ -12,7 +12,9 @@ use std::fs;
|
||||
|
||||
use serde::{Serialize, Deserialize};
|
||||
|
||||
use futures::Stream;
|
||||
use futures::future::BoxFuture;
|
||||
use futures::channel::{mpsc, oneshot};
|
||||
|
||||
use futures_signals::signal::Signal;
|
||||
use futures_signals::signal::SignalExt;
|
||||
@ -99,7 +101,8 @@ impl Machine {
|
||||
} else {
|
||||
if new_state == MachineState::free() {
|
||||
let mut guard = this.inner.try_lock().unwrap();
|
||||
return guard.do_state_change(new_state);
|
||||
guard.do_state_change(new_state);
|
||||
return Ok(ReturnToken(self.inner.clone()));
|
||||
}
|
||||
}
|
||||
|
||||
@ -123,6 +126,7 @@ impl Deref for Machine {
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
#[derive(Debug)]
|
||||
/// Internal machine representation
|
||||
///
|
||||
@ -142,7 +146,6 @@ pub struct Inner {
|
||||
/// case of an actor it should then make sure that the real world matches up with the set state
|
||||
state: Mutable<MachineState>,
|
||||
reset: Option<MachineState>,
|
||||
rx: Option<futures::channel::oneshot::Receiver<()>>,
|
||||
}
|
||||
|
||||
impl Inner {
|
||||
@ -156,7 +159,6 @@ impl Inner {
|
||||
desc: desc,
|
||||
state: Mutable::new(state),
|
||||
reset: None,
|
||||
rx: None,
|
||||
}
|
||||
}
|
||||
|
||||
@ -172,14 +174,9 @@ impl Inner {
|
||||
Box::pin(self.state.signal_cloned().dedupe_cloned())
|
||||
}
|
||||
|
||||
pub fn do_state_change(&mut self, new_state: MachineState) -> Result<ReturnToken> {
|
||||
let (tx, rx) = futures::channel::oneshot::channel();
|
||||
pub fn do_state_change(&mut self, new_state: MachineState) {
|
||||
let old_state = self.state.replace(new_state);
|
||||
self.reset.replace(old_state);
|
||||
// Also this drops the old receiver, which will signal to the initiator that the
|
||||
// machine has been taken off their hands.
|
||||
self.rx.replace(rx);
|
||||
return Ok(tx);
|
||||
}
|
||||
|
||||
pub fn read_state(&self) -> ReadOnlyMutable<MachineState> {
|
||||
@ -197,28 +194,24 @@ impl Inner {
|
||||
}
|
||||
}
|
||||
|
||||
pub type ReturnToken = futures::channel::oneshot::Sender<()>;
|
||||
//pub type ReturnToken = futures::channel::oneshot::Sender<()>;
|
||||
pub struct ReturnToken {
|
||||
inner: Arc<Mutex<Inner>>,
|
||||
}
|
||||
|
||||
impl Future for Inner {
|
||||
type Output = MachineState;
|
||||
impl ReturnToken {
|
||||
pub fn new(inner: Arc<Mutex<Inner>>) -> Self {
|
||||
Self { inner }
|
||||
}
|
||||
}
|
||||
|
||||
impl Future for ReturnToken {
|
||||
type Output = ();
|
||||
|
||||
fn poll(mut self: Pin<&mut Self>, cx: &mut Context) -> Poll<Self::Output> {
|
||||
let this = &mut *self;
|
||||
// TODO Return this on exit
|
||||
if false {
|
||||
return Poll::Ready(self.state.get_cloned());
|
||||
}
|
||||
let mut this = &mut *self;
|
||||
|
||||
// Check if the return token was sent/dropped
|
||||
if let Some(mut rx) = this.rx.take() {
|
||||
match Future::poll(Pin::new(&mut rx), cx) {
|
||||
// Regardless if we were canceled or properly returned, reset.
|
||||
Poll::Ready(_) => self.reset_state(),
|
||||
Poll::Pending => { this.rx.replace(rx); },
|
||||
}
|
||||
}
|
||||
|
||||
Poll::Pending
|
||||
this.0
|
||||
}
|
||||
}
|
||||
|
||||
@ -255,6 +248,8 @@ pub fn load(config: &crate::config::Config, access: Arc<access::AccessControl>)
|
||||
// TODO: Read state from the state db
|
||||
(v.name.clone(), Machine::construct(k, v, MachineState::new(), access.clone()))
|
||||
});
|
||||
|
||||
|
||||
Ok(HashMap::from_iter(it))
|
||||
}
|
||||
|
||||
|
Loading…
Reference in New Issue
Block a user