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Updated events modules and docs
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This commit is contained in:
Robin Müller
2024-04-24 14:30:45 +02:00
parent bfaddd0ebb
commit 5ec5124ea3
11 changed files with 257 additions and 232 deletions
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73
satrs/src/event_man.rs
View File

@ -1,14 +1,12 @@
//! Event management and forwarding
//!
//! This module provides components to perform event routing. The most important component for this
//! task is the [EventManager]. It receives all events and then routes them to event subscribers
//! where appropriate. One common use case for satellite systems is to offer a light-weight
//! publish-subscribe mechanism and IPC mechanism for software and hardware events which are also
//! packaged as telemetry (TM) or can trigger a system response.
//!
//! It is recommended to read the
//! [sat-rs book chapter](https://absatsw.irs.uni-stuttgart.de/projects/sat-rs/book/events.html)
//! about events first:
//! about events first.
//!
//! This module provides components to perform event routing. The most important component for this
//! task is the [EventManager]. It receives all events and then routes them to event subscribers
//! where appropriate.
//!
//! The event manager has a listener table abstracted by the [ListenerMapProvider], which maps
//! listener groups identified by [ListenerKey]s to a [listener ID][ComponentId].
@ -21,8 +19,8 @@
//!
//! 1. Provide a concrete [EventReceiveProvider] implementation. This abstraction allow to use different
//! message queue backends. A straightforward implementation where dynamic memory allocation is
//! not a big concern could use [std::sync::mpsc::channel] to do this and is provided in
//! form of the [MpscEventReceiver].
//! not a big concern would be to use the [std::sync::mpsc::Receiver] handle. The trait is
//! already implemented for this type.
//! 2. To set up event creators, create channel pairs using some message queue implementation.
//! Each event creator gets a (cloned) sender component which allows it to send events to the
//! manager.
@ -44,6 +42,12 @@
//! You can check [integration test](https://egit.irs.uni-stuttgart.de/rust/sat-rs/src/branch/main/satrs/tests/pus_events.rs)
//! for a concrete example using multi-threading where events are routed to
//! different threads.
//!
//! The [satrs-example](https://egit.irs.uni-stuttgart.de/rust/sat-rs/src/branch/main/satrs-example)
//! also contains a full event manager instance and exposes a test event via the PUS test service.
//! The [PUS event](https://egit.irs.uni-stuttgart.de/rust/sat-rs/src/branch/main/satrs-example/src/pus/event.rs)
//! module and the generic [events module](https://egit.irs.uni-stuttgart.de/rust/sat-rs/src/branch/main/satrs-example/src/events.rs)
//! show how the event management modules can be integrated into a more complex software.
use crate::events::{EventU16, EventU32, GenericEvent, LargestEventRaw, LargestGroupIdRaw};
use crate::params::Params;
use crate::queue::GenericSendError;
@ -157,9 +161,10 @@ pub trait SenderMapProvider<
/// * `SenderMap`: [SenderMapProvider] which maps channel IDs to send providers.
/// * `ListenerMap`: [ListenerMapProvider] which maps listener keys to channel IDs.
/// * `EventSender`: [EventSendProvider] contained within the sender map which sends the events.
/// * `Ev`: The event type. This type must implement the [GenericEvent]. Currently only [EventU32]
/// * `Event`: The event type. This type must implement the [GenericEvent]. Currently only [EventU32]
/// and [EventU16] are supported.
/// * `Data`: Auxiliary data which is sent with the event to provide optional context information
/// * `ParamProvider`: Auxiliary data which is sent with the event to provide optional context
/// information
pub struct EventManager<
EventReceiver: EventReceiveProvider<Event, ParamProvider>,
SenderMap: SenderMapProvider<EventSender, Event, ParamProvider>,
@ -331,11 +336,11 @@ pub mod alloc_mod {
/// Helper type which constrains the sender map and listener map generics to the [DefaultSenderMap]
/// and the [DefaultListenerMap]. It uses regular mpsc channels as the message queue backend.
pub type EventManagerWithMpsc<EV = EventU32, AUX = Params> = EventManager<
MpscEventReceiver,
DefaultSenderMap<EventSenderMpsc<EV>, EV, AUX>,
pub type EventManagerWithMpsc<Event = EventU32, ParamProvider = Params> = EventManager<
EventU32ReceiverMpsc<ParamProvider>,
DefaultSenderMap<EventSenderMpsc<Event>, Event, ParamProvider>,
DefaultListenerMap,
EventSenderMpsc<EV>,
EventSenderMpsc<Event>,
>;
/// Helper type which constrains the sender map and listener map generics to the [DefaultSenderMap]
@ -343,7 +348,7 @@ pub mod alloc_mod {
/// [bounded mpsc senders](https://doc.rust-lang.org/std/sync/mpsc/struct.SyncSender.html) as the
/// message queue backend.
pub type EventManagerWithBoundedMpsc<Event = EventU32, ParamProvider = Params> = EventManager<
MpscEventReceiver,
EventU32ReceiverMpsc<ParamProvider>,
DefaultSenderMap<EventSenderMpscBounded<Event>, Event, ParamProvider>,
DefaultListenerMap,
EventSenderMpscBounded<Event>,
@ -479,20 +484,16 @@ pub mod std_mod {
use super::*;
use std::sync::mpsc;
pub struct MpscEventReceiver<Event: GenericEvent + Send = EventU32> {
receiver: mpsc::Receiver<EventMessage<Event>>,
}
impl<Event: GenericEvent + Send> MpscEventReceiver<Event> {
pub fn new(receiver: mpsc::Receiver<EventMessage<Event>>) -> Self {
Self { receiver }
}
}
impl<Event: GenericEvent + Send> EventReceiveProvider<Event> for MpscEventReceiver<Event> {
impl<Event: GenericEvent + Send, ParamProvider: Debug>
EventReceiveProvider<Event, ParamProvider>
for mpsc::Receiver<EventMessage<Event, ParamProvider>>
{
type Error = GenericReceiveError;
fn try_recv_event(&self) -> Result<Option<EventMessage<Event>>, Self::Error> {
match self.receiver.try_recv() {
fn try_recv_event(
&self,
) -> Result<Option<EventMessage<Event, ParamProvider>>, Self::Error> {
match self.try_recv() {
Ok(msg) => Ok(Some(msg)),
Err(e) => match e {
mpsc::TryRecvError::Empty => Ok(None),
@ -504,8 +505,10 @@ pub mod std_mod {
}
}
pub type MpscEventU32Receiver = MpscEventReceiver<EventU32>;
pub type MpscEventU16Receiver = MpscEventReceiver<EventU16>;
pub type EventU32ReceiverMpsc<ParamProvider = Params> =
mpsc::Receiver<EventMessage<EventU32, ParamProvider>>;
pub type EventU16ReceiverMpsc<ParamProvider = Params> =
mpsc::Receiver<EventMessage<EventU16, ParamProvider>>;
/// Generic event sender which uses a regular [mpsc::Sender] as the messaging backend to
/// send events.
@ -624,9 +627,8 @@ mod tests {
}
fn generic_event_man() -> (mpsc::Sender<EventMessageU32>, EventManagerWithMpsc) {
let (event_sender, manager_queue) = mpsc::channel();
let event_man_receiver = MpscEventReceiver::new(manager_queue);
(event_sender, EventManager::new(event_man_receiver))
let (event_sender, event_receiver) = mpsc::channel();
(event_sender, EventManager::new(event_receiver))
}
#[test]
@ -793,9 +795,8 @@ mod tests {
let error_handler = |event_msg: &EventMessageU32, e: EventRoutingError| {
panic!("routing error occurred for event {:?}: {:?}", event_msg, e);
};
let (event_sender, manager_queue) = mpsc::channel();
let event_man_receiver = MpscEventReceiver::new(manager_queue);
let mut event_man = EventManagerWithMpsc::new(event_man_receiver);
let (event_sender, event_receiver) = mpsc::channel();
let mut event_man = EventManagerWithMpsc::new(event_receiver);
let event_0 = EventU32::new(Severity::INFO, 0, 5).unwrap();
let event_1 = EventU32::new(Severity::HIGH, 1, 0).unwrap();
let (event_0_tx_0, all_events_rx) = mpsc::channel();

98
satrs/src/pus/event_man.rs
View File

@ -28,7 +28,7 @@ pub use heapless_mod::*;
/// structure to track disabled events. A more primitive and embedded friendly
/// solution could track this information in a static or pre-allocated list which contains
/// the disabled events.
pub trait PusEventMgmtBackendProvider<Event: GenericEvent> {
pub trait PusEventReportingMapProvider<Event: GenericEvent> {
type Error;
fn event_enabled(&self, event: &Event) -> bool;
@ -56,7 +56,7 @@ pub mod heapless_mod {
{
}
impl<const N: usize, Provider: GenericEvent> PusEventMgmtBackendProvider<Provider>
impl<const N: usize, Provider: GenericEvent> PusEventReportingMapProvider<Provider>
for HeaplessPusMgmtBackendProvider<N, Provider>
{
type Error = ();
@ -105,20 +105,23 @@ impl From<EcssTmtcError> for EventManError {
pub mod alloc_mod {
use core::marker::PhantomData;
use crate::events::EventU16;
use crate::{
events::EventU16,
pus::event::{DummyEventHook, EventTmHookProvider},
};
use super::*;
/// Default backend provider which uses a hash set as the event reporting status container
/// like mentioned in the example of the [PusEventMgmtBackendProvider] documentation.
/// like mentioned in the example of the [PusEventReportingMapProvider] documentation.
///
/// This provider is a good option for host systems or larger embedded systems where
/// the expected occasional memory allocation performed by the [HashSet] is not an issue.
pub struct DefaultPusEventMgmtBackend<Event: GenericEvent = EventU32> {
pub struct DefaultPusEventReportingMap<Event: GenericEvent = EventU32> {
disabled: HashSet<Event>,
}
impl<Event: GenericEvent> Default for DefaultPusEventMgmtBackend<Event> {
impl<Event: GenericEvent> Default for DefaultPusEventReportingMap<Event> {
fn default() -> Self {
Self {
disabled: HashSet::default(),
@ -126,51 +129,54 @@ pub mod alloc_mod {
}
}
impl<EV: GenericEvent + PartialEq + Eq + Hash + Copy + Clone> PusEventMgmtBackendProvider<EV>
for DefaultPusEventMgmtBackend<EV>
impl<Event: GenericEvent + PartialEq + Eq + Hash + Copy + Clone>
PusEventReportingMapProvider<Event> for DefaultPusEventReportingMap<Event>
{
type Error = ();
fn event_enabled(&self, event: &EV) -> bool {
fn event_enabled(&self, event: &Event) -> bool {
!self.disabled.contains(event)
}
fn enable_event_reporting(&mut self, event: &EV) -> Result<bool, Self::Error> {
fn enable_event_reporting(&mut self, event: &Event) -> Result<bool, Self::Error> {
Ok(self.disabled.remove(event))
}
fn disable_event_reporting(&mut self, event: &EV) -> Result<bool, Self::Error> {
fn disable_event_reporting(&mut self, event: &Event) -> Result<bool, Self::Error> {
Ok(self.disabled.insert(*event))
}
}
pub struct PusEventDispatcher<
B: PusEventMgmtBackendProvider<EV, Error = E>,
EV: GenericEvent,
E,
pub struct PusEventTmCreatorWithMap<
ReportingMap: PusEventReportingMapProvider<Event>,
Event: GenericEvent,
EventTmHook: EventTmHookProvider = DummyEventHook,
> {
reporter: EventReporter,
backend: B,
phantom: PhantomData<(E, EV)>,
pub reporter: EventReporter<EventTmHook>,
reporting_map: ReportingMap,
phantom: PhantomData<Event>,
}
impl<B: PusEventMgmtBackendProvider<Event, Error = E>, Event: GenericEvent, E>
PusEventDispatcher<B, Event, E>
impl<
ReportingMap: PusEventReportingMapProvider<Event>,
Event: GenericEvent,
EventTmHook: EventTmHookProvider,
> PusEventTmCreatorWithMap<ReportingMap, Event, EventTmHook>
{
pub fn new(reporter: EventReporter, backend: B) -> Self {
pub fn new(reporter: EventReporter<EventTmHook>, backend: ReportingMap) -> Self {
Self {
reporter,
backend,
reporting_map: backend,
phantom: PhantomData,
}
}
pub fn enable_tm_for_event(&mut self, event: &Event) -> Result<bool, E> {
self.backend.enable_event_reporting(event)
pub fn enable_tm_for_event(&mut self, event: &Event) -> Result<bool, ReportingMap::Error> {
self.reporting_map.enable_event_reporting(event)
}
pub fn disable_tm_for_event(&mut self, event: &Event) -> Result<bool, E> {
self.backend.disable_event_reporting(event)
pub fn disable_tm_for_event(&mut self, event: &Event) -> Result<bool, ReportingMap::Error> {
self.reporting_map.disable_event_reporting(event)
}
pub fn generate_pus_event_tm_generic(
@ -180,7 +186,7 @@ pub mod alloc_mod {
event: Event,
params: Option<&[u8]>,
) -> Result<bool, EventManError> {
if !self.backend.event_enabled(&event) {
if !self.reporting_map.event_enabled(&event) {
return Ok(false);
}
match event.severity() {
@ -208,31 +214,33 @@ pub mod alloc_mod {
}
}
impl<EV: GenericEvent + Copy + PartialEq + Eq + Hash>
PusEventDispatcher<DefaultPusEventMgmtBackend<EV>, EV, ()>
impl<Event: GenericEvent + Copy + PartialEq + Eq + Hash, EventTmHook: EventTmHookProvider>
PusEventTmCreatorWithMap<DefaultPusEventReportingMap<Event>, Event, EventTmHook>
{
pub fn new_with_default_backend(reporter: EventReporter) -> Self {
pub fn new_with_default_backend(reporter: EventReporter<EventTmHook>) -> Self {
Self {
reporter,
backend: DefaultPusEventMgmtBackend::default(),
reporting_map: DefaultPusEventReportingMap::default(),
phantom: PhantomData,
}
}
}
impl<B: PusEventMgmtBackendProvider<EventU32, Error = E>, E> PusEventDispatcher<B, EventU32, E> {
impl<ReportingMap: PusEventReportingMapProvider<EventU32>>
PusEventTmCreatorWithMap<ReportingMap, EventU32>
{
pub fn enable_tm_for_event_with_sev<Severity: HasSeverity>(
&mut self,
event: &EventU32TypedSev<Severity>,
) -> Result<bool, E> {
self.backend.enable_event_reporting(event.as_ref())
) -> Result<bool, ReportingMap::Error> {
self.reporting_map.enable_event_reporting(event.as_ref())
}
pub fn disable_tm_for_event_with_sev<Severity: HasSeverity>(
&mut self,
event: &EventU32TypedSev<Severity>,
) -> Result<bool, E> {
self.backend.disable_event_reporting(event.as_ref())
) -> Result<bool, ReportingMap::Error> {
self.reporting_map.disable_event_reporting(event.as_ref())
}
pub fn generate_pus_event_tm<Severity: HasSeverity>(
@ -246,10 +254,10 @@ pub mod alloc_mod {
}
}
pub type DefaultPusEventU16Dispatcher<E> =
PusEventDispatcher<DefaultPusEventMgmtBackend<EventU16>, EventU16, E>;
pub type DefaultPusEventU32Dispatcher<E> =
PusEventDispatcher<DefaultPusEventMgmtBackend<EventU32>, EventU32, E>;
pub type DefaultPusEventU16TmCreator<EventTmHook = DummyEventHook> =
PusEventTmCreatorWithMap<DefaultPusEventReportingMap<EventU16>, EventU16, EventTmHook>;
pub type DefaultPusEventU32TmCreator<EventTmHook = DummyEventHook> =
PusEventTmCreatorWithMap<DefaultPusEventReportingMap<EventU32>, EventU32, EventTmHook>;
}
#[cfg(test)]
mod tests {
@ -265,16 +273,16 @@ mod tests {
const TEST_APID: u16 = 0x02;
const TEST_ID: UniqueApidTargetId = UniqueApidTargetId::new(TEST_APID, 0x05);
fn create_basic_man_1() -> DefaultPusEventU32Dispatcher<()> {
fn create_basic_man_1() -> DefaultPusEventU32TmCreator {
let reporter = EventReporter::new(TEST_ID.raw(), TEST_APID, 0, 128)
.expect("Creating event repoter failed");
PusEventDispatcher::new_with_default_backend(reporter)
PusEventTmCreatorWithMap::new_with_default_backend(reporter)
}
fn create_basic_man_2() -> DefaultPusEventU32Dispatcher<()> {
fn create_basic_man_2() -> DefaultPusEventU32TmCreator {
let reporter = EventReporter::new(TEST_ID.raw(), TEST_APID, 0, 128)
.expect("Creating event repoter failed");
let backend = DefaultPusEventMgmtBackend::default();
PusEventDispatcher::new(reporter, backend)
let backend = DefaultPusEventReportingMap::default();
PusEventTmCreatorWithMap::new(reporter, backend)
}
#[test]