337 lines
12 KiB
Rust
337 lines
12 KiB
Rust
use crate::events::{EventU32, GenericEvent, Severity};
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#[cfg(feature = "alloc")]
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use crate::events::{EventU32TypedSev, HasSeverity};
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#[cfg(feature = "alloc")]
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use core::hash::Hash;
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#[cfg(feature = "alloc")]
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use hashbrown::HashSet;
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#[cfg(feature = "alloc")]
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pub use crate::pus::event::EventReporter;
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use crate::pus::verification::TcStateToken;
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#[cfg(feature = "alloc")]
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use crate::pus::EcssTmSenderCore;
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use crate::pus::EcssTmtcError;
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#[cfg(feature = "alloc")]
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#[cfg_attr(doc_cfg, doc(cfg(feature = "alloc")))]
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pub use alloc_mod::*;
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#[cfg(feature = "heapless")]
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#[cfg_attr(doc_cfg, doc(cfg(feature = "heapless")))]
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pub use heapless_mod::*;
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/// This trait allows the PUS event manager implementation to stay generic over various types
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/// of backend containers.
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///
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/// These backend containers keep track on whether a particular event is enabled or disabled for
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/// reporting and also expose a simple API to enable or disable the event reporting.
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///
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/// For example, a straight forward implementation for host systems could use a
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/// [hash set](https://docs.rs/hashbrown/latest/hashbrown/struct.HashSet.html)
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/// structure to track disabled events. A more primitive and embedded friendly
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/// solution could track this information in a static or pre-allocated list which contains
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/// the disabled events.
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pub trait PusEventMgmtBackendProvider<Event: GenericEvent> {
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type Error;
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fn event_enabled(&self, event: &Event) -> bool;
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fn enable_event_reporting(&mut self, event: &Event) -> Result<bool, Self::Error>;
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fn disable_event_reporting(&mut self, event: &Event) -> Result<bool, Self::Error>;
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}
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#[cfg(feature = "heapless")]
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pub mod heapless_mod {
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use super::*;
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use crate::events::LargestEventRaw;
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use core::marker::PhantomData;
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#[cfg_attr(doc_cfg, doc(cfg(feature = "heapless")))]
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// TODO: After a new version of heapless is released which uses hash32 version 0.3, try using
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// regular Event type again.
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#[derive(Default)]
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pub struct HeaplessPusMgmtBackendProvider<const N: usize, Provider: GenericEvent> {
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disabled: heapless::FnvIndexSet<LargestEventRaw, N>,
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phantom: PhantomData<Provider>,
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}
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/// Safety: All contained field are [Send] as well
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unsafe impl<const N: usize, Event: GenericEvent + Send> Send
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for HeaplessPusMgmtBackendProvider<N, Event>
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{
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}
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impl<const N: usize, Provider: GenericEvent> PusEventMgmtBackendProvider<Provider>
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for HeaplessPusMgmtBackendProvider<N, Provider>
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{
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type Error = ();
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fn event_enabled(&self, event: &Provider) -> bool {
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self.disabled.contains(&event.raw_as_largest_type())
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}
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fn enable_event_reporting(&mut self, event: &Provider) -> Result<bool, Self::Error> {
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self.disabled
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.insert(event.raw_as_largest_type())
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.map_err(|_| ())
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}
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fn disable_event_reporting(&mut self, event: &Provider) -> Result<bool, Self::Error> {
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Ok(self.disabled.remove(&event.raw_as_largest_type()))
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}
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}
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}
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#[derive(Debug, PartialEq, Eq)]
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pub enum EventRequest<Event: GenericEvent = EventU32> {
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Enable(Event),
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Disable(Event),
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}
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#[derive(Debug)]
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pub struct EventRequestWithToken<Event: GenericEvent = EventU32> {
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pub request: EventRequest<Event>,
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pub token: TcStateToken,
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}
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#[derive(Debug)]
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pub enum EventManError {
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EcssTmtcError(EcssTmtcError),
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SeverityMissmatch(Severity, Severity),
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}
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impl From<EcssTmtcError> for EventManError {
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fn from(v: EcssTmtcError) -> Self {
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Self::EcssTmtcError(v)
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}
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}
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#[cfg(feature = "alloc")]
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pub mod alloc_mod {
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use core::marker::PhantomData;
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use crate::events::EventU16;
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use super::*;
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/// Default backend provider which uses a hash set as the event reporting status container
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/// like mentioned in the example of the [PusEventMgmtBackendProvider] documentation.
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///
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/// This provider is a good option for host systems or larger embedded systems where
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/// the expected occasional memory allocation performed by the [HashSet] is not an issue.
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pub struct DefaultPusEventMgmtBackend<Event: GenericEvent = EventU32> {
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disabled: HashSet<Event>,
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}
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impl<Event: GenericEvent> Default for DefaultPusEventMgmtBackend<Event> {
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fn default() -> Self {
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Self {
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disabled: HashSet::default(),
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}
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}
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}
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impl<EV: GenericEvent + PartialEq + Eq + Hash + Copy + Clone> PusEventMgmtBackendProvider<EV>
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for DefaultPusEventMgmtBackend<EV>
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{
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type Error = ();
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fn event_enabled(&self, event: &EV) -> bool {
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!self.disabled.contains(event)
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}
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fn enable_event_reporting(&mut self, event: &EV) -> Result<bool, Self::Error> {
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Ok(self.disabled.remove(event))
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}
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fn disable_event_reporting(&mut self, event: &EV) -> Result<bool, Self::Error> {
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Ok(self.disabled.insert(*event))
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}
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}
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pub struct PusEventDispatcher<
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B: PusEventMgmtBackendProvider<EV, Error = E>,
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EV: GenericEvent,
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E,
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> {
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reporter: EventReporter,
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backend: B,
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phantom: PhantomData<(E, EV)>,
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}
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impl<B: PusEventMgmtBackendProvider<Event, Error = E>, Event: GenericEvent, E>
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PusEventDispatcher<B, Event, E>
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{
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pub fn new(reporter: EventReporter, backend: B) -> Self {
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Self {
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reporter,
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backend,
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phantom: PhantomData,
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}
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}
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pub fn enable_tm_for_event(&mut self, event: &Event) -> Result<bool, E> {
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self.backend.enable_event_reporting(event)
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}
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pub fn disable_tm_for_event(&mut self, event: &Event) -> Result<bool, E> {
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self.backend.disable_event_reporting(event)
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}
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pub fn generate_pus_event_tm_generic(
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&self,
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sender: &(impl EcssTmSenderCore + ?Sized),
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time_stamp: &[u8],
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event: Event,
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params: Option<&[u8]>,
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) -> Result<bool, EventManError> {
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if !self.backend.event_enabled(&event) {
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return Ok(false);
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}
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match event.severity() {
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Severity::INFO => self
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.reporter
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.event_info(sender, time_stamp, event, params)
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.map(|_| true)
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.map_err(|e| e.into()),
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Severity::LOW => self
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.reporter
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.event_low_severity(sender, time_stamp, event, params)
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.map(|_| true)
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.map_err(|e| e.into()),
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Severity::MEDIUM => self
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.reporter
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.event_medium_severity(sender, time_stamp, event, params)
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.map(|_| true)
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.map_err(|e| e.into()),
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Severity::HIGH => self
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.reporter
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.event_high_severity(sender, time_stamp, event, params)
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.map(|_| true)
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.map_err(|e| e.into()),
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}
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}
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}
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impl<EV: GenericEvent + Copy + PartialEq + Eq + Hash>
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PusEventDispatcher<DefaultPusEventMgmtBackend<EV>, EV, ()>
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{
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pub fn new_with_default_backend(reporter: EventReporter) -> Self {
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Self {
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reporter,
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backend: DefaultPusEventMgmtBackend::default(),
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phantom: PhantomData,
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}
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}
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}
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impl<B: PusEventMgmtBackendProvider<EventU32, Error = E>, E> PusEventDispatcher<B, EventU32, E> {
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pub fn enable_tm_for_event_with_sev<Severity: HasSeverity>(
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&mut self,
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event: &EventU32TypedSev<Severity>,
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) -> Result<bool, E> {
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self.backend.enable_event_reporting(event.as_ref())
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}
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pub fn disable_tm_for_event_with_sev<Severity: HasSeverity>(
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&mut self,
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event: &EventU32TypedSev<Severity>,
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) -> Result<bool, E> {
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self.backend.disable_event_reporting(event.as_ref())
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}
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pub fn generate_pus_event_tm<Severity: HasSeverity>(
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&self,
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sender: &(impl EcssTmSenderCore + ?Sized),
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time_stamp: &[u8],
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event: EventU32TypedSev<Severity>,
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aux_data: Option<&[u8]>,
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) -> Result<bool, EventManError> {
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self.generate_pus_event_tm_generic(sender, time_stamp, event.into(), aux_data)
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}
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}
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pub type DefaultPusEventU16Dispatcher<E> =
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PusEventDispatcher<DefaultPusEventMgmtBackend<EventU16>, EventU16, E>;
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pub type DefaultPusEventU32Dispatcher<E> =
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PusEventDispatcher<DefaultPusEventMgmtBackend<EventU32>, EventU32, E>;
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}
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#[cfg(test)]
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mod tests {
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use super::*;
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use crate::events::SeverityInfo;
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use crate::pus::PusTmAsVec;
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use crate::request::UniqueApidTargetId;
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use std::sync::mpsc::{self, TryRecvError};
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const INFO_EVENT: EventU32TypedSev<SeverityInfo> =
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EventU32TypedSev::<SeverityInfo>::const_new(1, 0);
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const LOW_SEV_EVENT: EventU32 = EventU32::const_new(Severity::LOW, 1, 5);
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const EMPTY_STAMP: [u8; 7] = [0; 7];
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const TEST_APID: u16 = 0x02;
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const TEST_ID: UniqueApidTargetId = UniqueApidTargetId::new(TEST_APID, 0x05);
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fn create_basic_man_1() -> DefaultPusEventU32Dispatcher<()> {
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let reporter = EventReporter::new(TEST_ID.raw(), TEST_APID, 0, 128)
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.expect("Creating event repoter failed");
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PusEventDispatcher::new_with_default_backend(reporter)
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}
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fn create_basic_man_2() -> DefaultPusEventU32Dispatcher<()> {
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let reporter = EventReporter::new(TEST_ID.raw(), TEST_APID, 0, 128)
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.expect("Creating event repoter failed");
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let backend = DefaultPusEventMgmtBackend::default();
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PusEventDispatcher::new(reporter, backend)
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}
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#[test]
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fn test_basic() {
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let event_man = create_basic_man_1();
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let (event_tx, event_rx) = mpsc::channel::<PusTmAsVec>();
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let event_sent = event_man
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.generate_pus_event_tm(&event_tx, &EMPTY_STAMP, INFO_EVENT, None)
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.expect("Sending info event failed");
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assert!(event_sent);
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// Will not check packet here, correctness of packet was tested somewhere else
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event_rx.try_recv().expect("Receiving event TM failed");
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}
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#[test]
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fn test_disable_event() {
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let mut event_man = create_basic_man_2();
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let (event_tx, event_rx) = mpsc::channel::<PusTmAsVec>();
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// let mut sender = TmAsVecSenderWithMpsc::new(0, "test", event_tx);
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let res = event_man.disable_tm_for_event(&LOW_SEV_EVENT);
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assert!(res.is_ok());
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assert!(res.unwrap());
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let mut event_sent = event_man
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.generate_pus_event_tm_generic(&event_tx, &EMPTY_STAMP, LOW_SEV_EVENT, None)
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.expect("Sending low severity event failed");
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assert!(!event_sent);
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let res = event_rx.try_recv();
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assert!(res.is_err());
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assert!(matches!(res.unwrap_err(), TryRecvError::Empty));
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// Check that only the low severity event was disabled
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event_sent = event_man
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.generate_pus_event_tm(&event_tx, &EMPTY_STAMP, INFO_EVENT, None)
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.expect("Sending info event failed");
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assert!(event_sent);
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event_rx.try_recv().expect("No info event received");
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}
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#[test]
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fn test_reenable_event() {
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let mut event_man = create_basic_man_1();
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let (event_tx, event_rx) = mpsc::channel::<PusTmAsVec>();
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let mut res = event_man.disable_tm_for_event_with_sev(&INFO_EVENT);
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assert!(res.is_ok());
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assert!(res.unwrap());
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res = event_man.enable_tm_for_event_with_sev(&INFO_EVENT);
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assert!(res.is_ok());
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assert!(res.unwrap());
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let event_sent = event_man
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.generate_pus_event_tm(&event_tx, &EMPTY_STAMP, INFO_EVENT, None)
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.expect("Sending info event failed");
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assert!(event_sent);
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event_rx.try_recv().expect("No info event received");
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}
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}
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