pub async fn service<S: Service + Sized + 'static>() -> Address<S> {
        let mut lock = REGISTRY.services.lock().await;

        // Check whether address is already in registry.
        if let Some(maybe_addr) = lock.get(S::NAME) {
            // Check whether we can downcast the stored address to a desired type.
            if let Some(addr) = maybe_addr.downcast_ref::<Address<S>>() {
                // Check whether actor is running. It for some reason is was stopped,
                // we will have to re-launch it again.
                if addr.connected() {
                    return addr.clone();
                }
            } else {
                // Two or more services have a not unique name.
                panic!(
                    "Two or more services have a not unique name. \
                    Name is {}, attempt to retrieve the type {:?}, but stored type is {:?}",
                    S::NAME,
                    TypeId::of::<Address<S>>(),
                    (&*maybe_addr).type_id()
                );
            }
        }

        // Address is either not in the registry or has been stopped.
        // We now have to spawn and store it in the registry.
        let addr = S::default().spawn();
        lock.insert(S::NAME, Box::new(addr.clone()));

        addr
    }
/// Returns an address of an actor that implements [`Service`] trait.
///
/// This function checks whether the corresponding actor is
/// already running. If so, address of this actor is returned. Otherwise,
/// actor is spawned first.
///
/// ## Panics
///
/// This method panics if two services having the same name will be attempted
/// to be instantiated. All the names of services are expected to be unique.
Returns an address of an actor that implements [`Service`] trait.
This function checks whether the corresponding actor is
already running. If so, address of this actor is returned. Otherwise,
actor is spawned first.
Returns an address of an actor that implements [ ` Service ` ] trait . This function checks whether the corresponding actor is already running . If so address of this actor is returned . Otherwise actor is spawned first .
pub async fn service<S: Service + Sized + 'static>() -> Address<S> {
        let mut lock = REGISTRY.services.lock().await;
        // Check whether address is already in registry.
        if let Some(maybe_addr) = lock.get(S::NAME) {
            // Check whether we can downcast the stored address to a desired type.
            if let Some(addr) = maybe_addr.downcast_ref::<Address<S>>() {
                // Check whether actor is running. It for some reason is was stopped,
                // we will have to re-launch it again.
                if addr.connected() {
                    return addr.clone();
                }
            } else {
                // Two or more services have a not unique name.
                panic!(
                    "Two or more services have a not unique name. \
                    Name is {}, attempt to retrieve the type {:?}, but stored type is {:?}",
                    S::NAME,
                    TypeId::of::<Address<S>>(),
                    (&*maybe_addr).type_id()
                );
            }
        }
        // Address is either not in the registry or has been stopped.
        // We now have to spawn and store it in the registry.
        let addr = S::default().spawn();
        lock.insert(S::NAME, Box::new(addr.clone()));
        addr
    }
pub async fn service < S : Service + Sized + ' static > ( ) -> Address < S > { let mut lock = REGISTRY . services . lock ( ) . await ; // Check whether address is already in registry. if let Some ( maybe_addr ) = lock . get ( S :: NAME ) { // Check whether we can downcast the stored address to a desired type. if let Some ( addr ) = maybe_addr . downcast_ref :: < Address < S > > ( ) { // Check whether actor is running. It for some reason is was stopped, // we will have to re-launch it again. if addr . connected ( ) { return addr . clone ( ) ; } } else { // Two or more services have a not unique name. panic ! ( " \
 " S NAME TypeId of Address S ( ) ( maybe_addr ) type_id ( ) ) ; } } // Address is either not in the registry or has been stopped. // We now have to spawn and store it in the registry. let addr = S :: default ( ) . spawn ( ) ; lock . insert ( S :: NAME , Box :: new ( addr . clone ( ) ) ) ; addr }
Returns an address of an actor that implements [`Service`] trait.
Returns an address of an actor that implements [ ` Service ` ] trait .
panics
This method panics if two services having the same name will be attempted
to be instantiated. All the names of services are expected to be unique.
This method panics if two services having the same name will be attempted to be instantiated . All the names of services are expected to be unique .