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use super::*;
impl<T: TransportPort + 'static> BACnetServer<T> {
/// Evaluate intrinsic reporting on an object and send event notifications
/// to NotificationClass recipients (or broadcast if none configured).
/// Skipped when DCC is active (comm_state >= 1).
pub(super) async fn fire_event_notifications(
db: &Arc<RwLock<ObjectDatabase>>,
network: &Arc<NetworkLayer<T>>,
comm_state: &Arc<AtomicU8>,
server_tsm: &Arc<Mutex<ServerTsm>>,
oid: &ObjectIdentifier,
retry_timeout_ms: u64,
) {
if comm_state.load(Ordering::Acquire) >= 1 {
return;
}
let now = std::time::SystemTime::now()
.duration_since(std::time::UNIX_EPOCH)
.unwrap_or_default();
let total_secs = now.as_secs();
let dow = ((total_secs / 86400 + 3) % 7) as u8;
let today_bit = 1u8 << dow;
let day_secs = (total_secs % 86400) as u32;
let current_time = Time {
hour: (day_secs / 3600) as u8,
minute: ((day_secs % 3600) / 60) as u8,
second: (day_secs % 60) as u8,
hundredths: (now.subsec_millis() / 10) as u8,
};
let (notification, recipients) = {
let mut db = db.write().await;
let device_oid = db
.list_objects()
.into_iter()
.find(|o| o.object_type() == ObjectType::DEVICE)
.unwrap_or_else(|| ObjectIdentifier::new(ObjectType::DEVICE, 0).unwrap());
let object = match db.get_mut(oid) {
Some(o) => o,
None => return,
};
let change = match object.evaluate_intrinsic_reporting() {
Some(c) => c,
None => return,
};
let notification_class = object
.read_property(PropertyIdentifier::NOTIFICATION_CLASS, None)
.ok()
.and_then(|v| match v {
PropertyValue::Unsigned(n) => Some(n as u32),
_ => None,
})
.unwrap_or(0);
let notify_type = object
.read_property(PropertyIdentifier::NOTIFY_TYPE, None)
.ok()
.and_then(|v| match v {
PropertyValue::Enumerated(n) => Some(n),
_ => None,
})
.unwrap_or(NotifyType::ALARM.to_raw());
let priority = if change.to == bacnet_types::enums::EventState::NORMAL {
200u8
} else {
100u8
};
let transition = change.transition();
let base_notification = EventNotificationRequest {
process_identifier: 0,
initiating_device_identifier: device_oid,
event_object_identifier: *oid,
timestamp: BACnetTimeStamp::SequenceNumber(total_secs),
notification_class,
priority,
event_type: change.event_type().to_raw(),
message_text: None,
notify_type,
ack_required: notify_type == NotifyType::ALARM.to_raw(),
from_state: change.from.to_raw(),
to_state: change.to.to_raw(),
event_values: None,
};
let recipients = get_notification_recipients(
&db,
notification_class,
transition,
today_bit,
¤t_time,
);
(base_notification, recipients)
};
if recipients.is_empty() {
let mut service_buf = BytesMut::new();
if let Err(e) = notification.encode(&mut service_buf) {
warn!(error = %e, "Failed to encode EventNotification");
return;
}
let pdu = Apdu::UnconfirmedRequest(UnconfirmedRequestPdu {
service_choice: UnconfirmedServiceChoice::UNCONFIRMED_EVENT_NOTIFICATION,
service_request: service_buf.freeze(),
});
let mut buf = BytesMut::new();
encode_apdu(&mut buf, &pdu).expect("valid APDU encoding");
if let Err(e) = network
.broadcast_apdu(&buf, false, NetworkPriority::NORMAL)
.await
{
warn!(error = %e, "Failed to broadcast EventNotification");
}
} else {
for (recipient, process_id, confirmed) in &recipients {
let mut targeted = notification.clone();
targeted.process_identifier = *process_id;
let mut service_buf = BytesMut::new();
if let Err(e) = targeted.encode(&mut service_buf) {
warn!(error = %e, "Failed to encode EventNotification");
continue;
}
let service_bytes = service_buf.freeze();
if *confirmed {
let target_mac = match recipient {
bacnet_types::constructed::BACnetRecipient::Address(addr) => {
Some(addr.mac_address.clone())
}
bacnet_types::constructed::BACnetRecipient::Device(_) => None,
};
let peer_key = target_mac.clone().unwrap_or_else(MacAddr::new);
let (id, result_rx) = {
let mut tsm = server_tsm.lock().await;
tsm.allocate(peer_key.clone())
};
let pdu = Apdu::ConfirmedRequest(ConfirmedRequestPdu {
segmented: false,
more_follows: false,
segmented_response_accepted: false,
max_segments: None,
max_apdu_length: 1476,
invoke_id: id,
sequence_number: None,
proposed_window_size: None,
service_choice: ConfirmedServiceChoice::CONFIRMED_EVENT_NOTIFICATION,
service_request: service_bytes,
});
let mut buf = BytesMut::new();
encode_apdu(&mut buf, &pdu).expect("valid APDU encoding");
let network = Arc::clone(network);
let tsm = Arc::clone(server_tsm);
let timeout = Duration::from_millis(retry_timeout_ms);
let apdu_retries = DEFAULT_APDU_RETRIES;
tokio::spawn(async move {
let mut pending_rx: Option<oneshot::Receiver<CovAckResult>> =
Some(result_rx);
for attempt in 0..=apdu_retries {
let send_result = if let Some(mac) = target_mac.as_ref() {
network
.send_apdu(&buf, mac, true, NetworkPriority::NORMAL)
.await
} else {
network
.broadcast_apdu(&buf, true, NetworkPriority::NORMAL)
.await
};
if let Err(e) = send_result {
warn!(error = %e, attempt, "Confirmed EventNotification send failed");
} else {
debug!(invoke_id = id, attempt, "Confirmed EventNotification sent");
}
let rx = pending_rx
.take()
.expect("receiver always set for each attempt");
let result = match tokio::time::timeout(timeout, rx).await {
Ok(Ok(r)) => Ok(r),
Ok(Err(_)) => Err(()),
Err(_) => Err(()),
};
if result.is_err() && attempt < apdu_retries {
let new_rx = {
let mut tsm = tsm.lock().await;
tsm.register(peer_key.clone(), id)
};
pending_rx = Some(new_rx);
}
match result {
Ok(CovAckResult::Ack) => {
debug!(invoke_id = id, "EventNotification acknowledged");
return;
}
Ok(CovAckResult::Error) => {
warn!(
invoke_id = id,
"EventNotification rejected by recipient"
);
return;
}
Err(_) => {
if attempt < apdu_retries {
debug!(
invoke_id = id,
attempt, "EventNotification timeout, retrying"
);
} else {
warn!(
invoke_id = id,
"EventNotification failed after {} retries",
apdu_retries
);
}
}
}
}
let mut tsm = tsm.lock().await;
tsm.remove(&peer_key, id);
});
} else {
let pdu = Apdu::UnconfirmedRequest(UnconfirmedRequestPdu {
service_choice: UnconfirmedServiceChoice::UNCONFIRMED_EVENT_NOTIFICATION,
service_request: service_bytes,
});
let mut buf = BytesMut::new();
encode_apdu(&mut buf, &pdu).expect("valid APDU encoding");
match recipient {
bacnet_types::constructed::BACnetRecipient::Address(addr) => {
if let Err(e) = network
.send_apdu(&buf, &addr.mac_address, false, NetworkPriority::NORMAL)
.await
{
warn!(
error = %e,
"Failed to send unconfirmed EventNotification"
);
}
}
bacnet_types::constructed::BACnetRecipient::Device(_) => {
if let Err(e) = network
.broadcast_apdu(&buf, false, NetworkPriority::NORMAL)
.await
{
warn!(
error = %e,
"Failed to broadcast unconfirmed EventNotification"
);
}
}
}
}
}
}
}
}