controller/src/relay_loop.rs

150 lines
3.4 KiB
Rust

use std::time::Duration;
use actix::Addr;
use chrono::Timelike;
use emgauwa_common::constants::RELAYS_RETRY_TIMEOUT;
use emgauwa_common::errors::EmgauwaError;
use emgauwa_common::models::Controller;
use emgauwa_common::types::{EmgauwaNow, Weekday};
use emgauwa_common::utils::printable_relay_states;
use futures::pin_mut;
use tokio::time;
use tokio::time::timeout;
use crate::app_state::AppState;
use crate::app_state;
pub async fn run_relays_loop(app_state: Addr<AppState>) {
log::debug!("Spawned relays loop");
loop {
let run_result = run_relays(&app_state).await;
if let Err(err) = run_result {
log::error!("Error running relays: {}", err);
}
time::sleep(RELAYS_RETRY_TIMEOUT).await;
}
}
async fn run_relays(app_state: &Addr<AppState>) -> Result<(), EmgauwaError> {
let notifier = &*app_state
.send(app_state::GetControllerNotifier {})
.await?;
let mut last_weekday = emgauwa_common::utils::get_weekday();
let mut this = AppState::get_this(app_state).await?;
let mut duration_override = None;
loop {
let now = EmgauwaNow::now();
let notifier_future = notifier.notified();
pin_mut!(notifier_future);
let mut changed = timeout(
get_next_duration(&mut this, &mut duration_override, &now),
&mut notifier_future,
)
.await
.is_ok();
let now = EmgauwaNow::now();
check_weekday(app_state, &mut last_weekday, &mut changed, &now).await?;
if changed {
log::debug!("Reloading controller in relay loop");
this = AppState::get_this(app_state).await?;
}
log::debug!(
"Relay loop at {}: {}",
now.time,
printable_relay_states(&this.get_relay_states())
);
duration_override = this
.relays
.iter_mut()
.filter_map(|relay| match relay.check_pulsing(&now.instant) {
None => None,
Some(pulse) => {
let dur = pulse - now.instant;
log::debug!(
"Pulsing relay {} for {}s until {:?} ",
relay.r.number,
dur.as_secs(),
pulse
);
Some(dur)
}
})
.min();
calc_relay_states(&mut this, app_state, &now).await?;
}
}
async fn calc_relay_states(
this: &mut Controller,
app_state: &Addr<AppState>,
now: &EmgauwaNow,
) -> Result<(), EmgauwaError> {
this.relays
.iter_mut()
.for_each(|relay| {
relay.reload_active_schedule(now.weekday);
relay.is_on = Some(
relay.active_schedule.is_on(&now.time)
|| relay.check_pulsing(&now.instant).is_some(),
);
});
app_state
.send(app_state::UpdateRelayStates {
relay_states: this.get_relay_states()
})
.await
.map_err(EmgauwaError::from)
}
fn get_next_duration(
this: &mut Controller,
duration_override: &mut Option<Duration>,
now: &EmgauwaNow,
) -> Duration {
if let Some(duration) = duration_override {
log::debug!("Duration override. Waiting for {}s", duration.as_secs());
return *duration;
}
let next_timestamp = this
.check_next_time(now)
.map_or(86400, |t| t.num_seconds_from_midnight());
let duration_to_next = Duration::from_secs((next_timestamp - now.time_in_s()) as u64);
log::debug!(
"Next timestamp: {}; Waiting for {}s",
next_timestamp,
duration_to_next.as_secs()
);
duration_to_next
}
async fn check_weekday(
app_state: &Addr<AppState>,
last_weekday: &mut Weekday,
changed: &mut bool,
now: &EmgauwaNow,
) -> Result<(), EmgauwaError> {
let current_weekday = now.weekday;
if current_weekday.ne(last_weekday) {
log::debug!("Weekday changed");
*last_weekday = current_weekday;
AppState::trigger_reload(app_state).await?;
*changed = true;
}
Ok(())
}