pub(crate) async fn handle_connection(
        connection: Arc<SyncConnection>, mut sub_rx: mpsc::Receiver<SubscriptionReq>,
    ) -> Result<()> {
        use dbus::message::SignalArgs;
        lazy_static! {
            static ref SERVICE_NAME_BUS: BusName<'static> = BusName::new(SERVICE_NAME).unwrap();
            static ref SERVICE_NAME_REF: Option<&'static BusName<'static>> = Some(&SERVICE_NAME_BUS);
        }

        let (msg_tx, mut msg_rx) = mpsc::unbounded();
        let handle_msg = move |msg: Message| {
            let _ = msg_tx.unbounded_send(msg);
            true
        };

        let rule_add = ObjectManagerInterfacesAdded::match_rule(*SERVICE_NAME_REF, None);
        let msg_match_add = connection.add_match(rule_add).await?.msg_cb(handle_msg.clone());

        let rule_removed = ObjectManagerInterfacesRemoved::match_rule(*SERVICE_NAME_REF, None);
        let msg_match_removed = connection.add_match(rule_removed).await?.msg_cb(handle_msg.clone());

        let rule_prop = PropertiesPropertiesChanged::match_rule(*SERVICE_NAME_REF, None);
        let msg_match_prop = connection.add_match(rule_prop).await?.msg_cb(handle_msg.clone());

        tokio::spawn(async move {
            log::trace!("Starting event loop for {}", &connection.unique_name());

            struct Subscription {
                child_objects: bool,
                tx: mpsc::UnboundedSender<Event>,
            }
            let mut subs: HashMap<String, Vec<Subscription>> = HashMap::new();

            loop {
                select! {
                    msg_opt = msg_rx.next() => {
                        match msg_opt {
                            Some(msg) => {
                                // Properties changed.
                                if let (Some(object), Some(PropertiesPropertiesChanged { interface_name, changed_properties, .. })) =
                                    (msg.path(), PropertiesPropertiesChanged::from_message(&msg))
                                {
                                    // Check for direct path match for PropertiesChanged event.
                                    if let Some(path_subs) = subs.get_mut(&*object) {
                                        let evt = Self::PropertiesChanged {
                                            object: object.clone().into_static(),
                                            interface: interface_name,
                                            changed: changed_properties,
                                        };
                                        log::trace!("Event: {:?}", &evt);
                                        path_subs.retain(|sub| sub.tx.unbounded_send(evt.clone()).is_ok());
                                        if path_subs.is_empty() {
                                            subs.remove(&*object);
                                        }
                                    }
                                }

                                // Objects added.
                                if let Some(ObjectManagerInterfacesAdded { object, interfaces }) =
                                    ObjectManagerInterfacesAdded::from_message(&msg)
                                {
                                    // Check for parent path match for ObjectAdded event.
                                    let parent = parent_path(&object);
                                    if let Some(parent_subs) = subs.get_mut(&*parent) {
                                        let evt = Self::ObjectAdded {
                                            object,
                                            interfaces: interfaces.into_iter().map(|(interface, _)| interface).collect(),
                                        };
                                        log::trace!("Event: {:?}", &evt);
                                        parent_subs.retain(|sub| {
                                            if sub.child_objects {
                                                sub.tx.unbounded_send(evt.clone()).is_ok()
                                            } else {
                                                true
                                            }
                                        });
                                        if parent_subs.is_empty() {
                                            subs.remove(&*parent);
                                        }
                                    }
                                }

                                // Object removed.
                                if let Some(ObjectManagerInterfacesRemoved { object, interfaces, .. }) =
                                    ObjectManagerInterfacesRemoved::from_message(&msg)
                                {
                                    // Remove subscriptions for removed object.
                                    // This ends the event streams of the subscriptions.
                                    if subs.remove(&*object).is_some() {
                                        log::trace!("Event subscription for {} ended because object was removed", &object);
                                    }

                                    // Check for parent path match for ObjectRemoved event.
                                    let parent = parent_path(&object);
                                    if let Some(parent_subs) = subs.get_mut(&*parent) {
                                        let evt = Self::ObjectRemoved { object, interfaces: interfaces.into_iter().collect() };
                                        log::trace!("Event: {:?}", &evt);
                                        parent_subs.retain(|sub| {
                                            if sub.child_objects {
                                                sub.tx.unbounded_send(evt.clone()).is_ok()
                                            } else {
                                                true
                                            }
                                        });
                                        if parent_subs.is_empty() {
                                            subs.remove(&*parent);
                                        }
                                    }
                                }
                            },
                            None => break,
                        }
                    },
                    sub_opt = sub_rx.next() => {
                        match sub_opt {
                            Some(SubscriptionReq { path, child_objects, tx, ready_tx }) => {
                                log::trace!("Adding event subscription for {} with child_objects={:?}", &path, &child_objects);
                                let _ = ready_tx.send(());
                                let path_subs = subs.entry(path.to_string()).or_default();
                                path_subs.push(Subscription {
                                    child_objects, tx
                                });
                            }
                            None => break,
                        }
                    }
                }
            }

            let _ = connection.remove_match(msg_match_add.token()).await;
            let _ = connection.remove_match(msg_match_removed.token()).await;
            let _ = connection.remove_match(msg_match_prop.token()).await;
            log::trace!("Terminated event loop for {}", &connection.unique_name());
        });

        Ok(())
    }
/// Spawns a task that handles events for the specified connection.
Spawns a task that handles events for the specified connection.
Spawns a task that handles events for the specified connection .
pub(crate) async fn handle_connection(
        connection: Arc<SyncConnection>, mut sub_rx: mpsc::Receiver<SubscriptionReq>,
    ) -> Result<()> {
        use dbus::message::SignalArgs;
        lazy_static! {
            static ref SERVICE_NAME_BUS: BusName<'static> = BusName::new(SERVICE_NAME).unwrap();
            static ref SERVICE_NAME_REF: Option<&'static BusName<'static>> = Some(&SERVICE_NAME_BUS);
        }
        let (msg_tx, mut msg_rx) = mpsc::unbounded();
        let handle_msg = move |msg: Message| {
            let _ = msg_tx.unbounded_send(msg);
            true
        };
        let rule_add = ObjectManagerInterfacesAdded::match_rule(*SERVICE_NAME_REF, None);
        let msg_match_add = connection.add_match(rule_add).await?.msg_cb(handle_msg.clone());
        let rule_removed = ObjectManagerInterfacesRemoved::match_rule(*SERVICE_NAME_REF, None);
        let msg_match_removed = connection.add_match(rule_removed).await?.msg_cb(handle_msg.clone());
        let rule_prop = PropertiesPropertiesChanged::match_rule(*SERVICE_NAME_REF, None);
        let msg_match_prop = connection.add_match(rule_prop).await?.msg_cb(handle_msg.clone());
        tokio::spawn(async move {
            log::trace!("Starting event loop for {}", &connection.unique_name());
            struct Subscription {
                child_objects: bool,
                tx: mpsc::UnboundedSender<Event>,
            }
            let mut subs: HashMap<String, Vec<Subscription>> = HashMap::new();
            loop {
                select! {
                    msg_opt = msg_rx.next() => {
                        match msg_opt {
                            Some(msg) => {
                                // Properties changed.
                                if let (Some(object), Some(PropertiesPropertiesChanged { interface_name, changed_properties, .. })) =
                                    (msg.path(), PropertiesPropertiesChanged::from_message(&msg))
                                {
                                    // Check for direct path match for PropertiesChanged event.
                                    if let Some(path_subs) = subs.get_mut(&*object) {
                                        let evt = Self::PropertiesChanged {
                                            object: object.clone().into_static(),
                                            interface: interface_name,
                                            changed: changed_properties,
                                        };
                                        log::trace!("Event: {:?}", &evt);
                                        path_subs.retain(|sub| sub.tx.unbounded_send(evt.clone()).is_ok());
                                        if path_subs.is_empty() {
                                            subs.remove(&*object);
                                        }
                                    }
                                }
                                // Objects added.
                                if let Some(ObjectManagerInterfacesAdded { object, interfaces }) =
                                    ObjectManagerInterfacesAdded::from_message(&msg)
                                {
                                    // Check for parent path match for ObjectAdded event.
                                    let parent = parent_path(&object);
                                    if let Some(parent_subs) = subs.get_mut(&*parent) {
                                        let evt = Self::ObjectAdded {
                                            object,
                                            interfaces: interfaces.into_iter().map(|(interface, _)| interface).collect(),
                                        };
                                        log::trace!("Event: {:?}", &evt);
                                        parent_subs.retain(|sub| {
                                            if sub.child_objects {
                                                sub.tx.unbounded_send(evt.clone()).is_ok()
                                            } else {
                                                true
                                            }
                                        });
                                        if parent_subs.is_empty() {
                                            subs.remove(&*parent);
                                        }
                                    }
                                }
                                // Object removed.
                                if let Some(ObjectManagerInterfacesRemoved { object, interfaces, .. }) =
                                    ObjectManagerInterfacesRemoved::from_message(&msg)
                                {
                                    // Remove subscriptions for removed object.
                                    // This ends the event streams of the subscriptions.
                                    if subs.remove(&*object).is_some() {
                                        log::trace!("Event subscription for {} ended because object was removed", &object);
                                    }
                                    // Check for parent path match for ObjectRemoved event.
                                    let parent = parent_path(&object);
                                    if let Some(parent_subs) = subs.get_mut(&*parent) {
                                        let evt = Self::ObjectRemoved { object, interfaces: interfaces.into_iter().collect() };
                                        log::trace!("Event: {:?}", &evt);
                                        parent_subs.retain(|sub| {
                                            if sub.child_objects {
                                                sub.tx.unbounded_send(evt.clone()).is_ok()
                                            } else {
                                                true
                                            }
                                        });
                                        if parent_subs.is_empty() {
                                            subs.remove(&*parent);
                                        }
                                    }
                                }
                            },
                            None => break,
                        }
                    },
                    sub_opt = sub_rx.next() => {
                        match sub_opt {
                            Some(SubscriptionReq { path, child_objects, tx, ready_tx }) => {
                                log::trace!("Adding event subscription for {} with child_objects={:?}", &path, &child_objects);
                                let _ = ready_tx.send(());
                                let path_subs = subs.entry(path.to_string()).or_default();
                                path_subs.push(Subscription {
                                    child_objects, tx
                                });
                            }
                            None => break,
                        }
                    }
                }
            }
            let _ = connection.remove_match(msg_match_add.token()).await;
            let _ = connection.remove_match(msg_match_removed.token()).await;
            let _ = connection.remove_match(msg_match_prop.token()).await;
            log::trace!("Terminated event loop for {}", &connection.unique_name());
        });
        Ok(())
    }
pub ( crate ) async fn handle_connection ( connection : Arc < SyncConnection > , mut sub_rx : mpsc :: Receiver < SubscriptionReq > , ) -> Result < ( ) > { use dbus :: message :: SignalArgs ; lazy_static ! { static ref SERVICE_NAME_BUS BusName ' static BusName new ( SERVICE_NAME ) unwrap ( ) static ref SERVICE_NAME_REF Option ' static BusName ' static Some ( SERVICE_NAME_BUS ) } let ( msg_tx , mut msg_rx ) = mpsc :: unbounded ( ) ; let handle_msg = move | msg : Message | { let _ = msg_tx . unbounded_send ( msg ) ; true } ; let rule_add = ObjectManagerInterfacesAdded :: match_rule ( * SERVICE_NAME_REF , None ) ; let msg_match_add = connection . add_match ( rule_add ) . await ? . msg_cb ( handle_msg . clone ( ) ) ; let rule_removed = ObjectManagerInterfacesRemoved :: match_rule ( * SERVICE_NAME_REF , None ) ; let msg_match_removed = connection . add_match ( rule_removed ) . await ? . msg_cb ( handle_msg . clone ( ) ) ; let rule_prop = PropertiesPropertiesChanged :: match_rule ( * SERVICE_NAME_REF , None ) ; let msg_match_prop = connection . add_match ( rule_prop ) . await ? . msg_cb ( handle_msg . clone ( ) ) ; tokio :: spawn ( async move { log :: trace ! ( " " connection unique_name ( ) ) ; struct Subscription { child_objects : bool , tx : mpsc :: UnboundedSender < Event > , } let mut subs : HashMap < String , Vec < Subscription > > = HashMap :: new ( ) ; loop { select ! { msg_opt msg_rx next ( ) { match msg_opt { Some ( msg ) { // Properties changed. if let ( Some ( object ) Some ( PropertiesPropertiesChanged { interface_name changed_properties } ) ) ( msg path ( ) PropertiesPropertiesChanged from_message ( msg ) ) { // Check for direct path match for PropertiesChanged event. if let Some ( path_subs ) subs get_mut ( object ) { let evt Self PropertiesChanged { object object clone ( ) into_static ( ) interface interface_name changed changed_properties } log trace ( " " evt ) path_subs retain ( sub sub tx unbounded_send ( evt clone ( ) ) is_ok ( ) ) if path_subs is_empty ( ) { subs remove ( object ) } } } // Objects added. if let Some ( ObjectManagerInterfacesAdded { object interfaces } ) ObjectManagerInterfacesAdded from_message ( msg ) { // Check for parent path match for ObjectAdded event. let parent parent_path ( object ) if let Some ( parent_subs ) subs get_mut ( parent ) { let evt Self ObjectAdded { object interfaces interfaces into_iter ( ) map ( ( interface ) interface ) collect ( ) } log trace ( " " evt ) parent_subs retain ( sub { if sub child_objects { sub tx unbounded_send ( evt clone ( ) ) is_ok ( ) } else { true } } ) if parent_subs is_empty ( ) { subs remove ( parent ) } } } // Object removed. if let Some ( ObjectManagerInterfacesRemoved { object interfaces } ) ObjectManagerInterfacesRemoved from_message ( msg ) { // Remove subscriptions for removed object. // This ends the event streams of the subscriptions. if subs remove ( object ) is_some ( ) { log trace ( " " object ) } // Check for parent path match for ObjectRemoved event. let parent parent_path ( object ) if let Some ( parent_subs ) subs get_mut ( parent ) { let evt Self ObjectRemoved { object interfaces interfaces into_iter ( ) collect ( ) } log trace ( " " evt ) parent_subs retain ( sub { if sub child_objects { sub tx unbounded_send ( evt clone ( ) ) is_ok ( ) } else { true } } ) if parent_subs is_empty ( ) { subs remove ( parent ) } } } } None break } } sub_opt sub_rx next ( ) { match sub_opt { Some ( SubscriptionReq { path child_objects tx ready_tx } ) { log trace ( " " path child_objects ) let ready_tx send ( ( ) ) let path_subs subs entry ( path to_string ( ) ) or_default ( ) path_subs push ( Subscription { child_objects tx } ) } None break } } } } let _ = connection . remove_match ( msg_match_add . token ( ) ) . await ; let _ = connection . remove_match ( msg_match_removed . token ( ) ) . await ; let _ = connection . remove_match ( msg_match_prop . token ( ) ) . await ; log :: trace ! ( " " connection unique_name ( ) ) ; } ) ; Ok ( ( ) ) }
Spawns a task that handles events for the specified connection.
Spawns a task that handles events for the specified connection .
connection
Arc<SyncConnection>
sub_rx
mpsc::Receiver<SubscriptionReq>
connection
Arc<SyncConnection>
sub_rx
mpsc::Receiver<SubscriptionReq>