Struct Context

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pub struct Context<'a, A: Actor> { /* private fields */ }
Expand description

Context for a message currently being handled by an Instance.

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impl<'a, A: Actor> Context<'a, A>

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pub fn new(instance: &'a Instance<A>, headers: Attrs) -> Self

Construct a new Context.

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pub fn headers(&self) -> &Attrs

Get a reference to the message headers.

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pub fn self_id(&self) -> &ActorId

This instance’s actor ID.

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pub fn stop(&self) -> Result<(), ActorError>

Signal the actor to stop.

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pub fn open_port<M: Message>(&self) -> (PortHandle<M>, PortReceiver<M>)

Open a new port that accepts M-typed messages. The returned port may be freely cloned, serialized, and passed around. The returned receiver should only be retained by the actor responsible for processing the delivered messages.

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pub fn open_once_port<M: Message>( &self, ) -> (OncePortHandle<M>, OncePortReceiver<M>)

Open a new one-shot port that accepts M-typed messages. The returned port may be used to send a single message; ditto the receiver may receive a single message.

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pub fn post(&self, port_id: PortId, headers: Attrs, message: Serialized)

Send a message to the actor running on the proc.

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pub fn self_message_with_delay<M>( &self, message: M, delay: Duration, ) -> Result<(), ActorError>
where M: Message, A: Handler<M>,

Send a message to the actor itself with a delay usually to trigger some event.

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pub fn port<M: Message>(&self) -> PortHandle<M>
where A: Handler<M>,

Return a handle port handle representing the actor’s message handler for M-typed messages.

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pub fn handle(&self) -> ActorHandle<A>

The ActorHandle corresponding to this instance.

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pub fn bind<R: Binds<A>>(&self) -> ActorRef<R>

The owning actor ref.

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pub fn clock(&self) -> &(impl Clock + use<A>)

A reference to the proc’s clock

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pub fn proc(&self) -> &Proc

The owning proc.

Trait Implementations§

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impl<A: Actor> Deref for Context<'_, A>

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type Target = Instance<A>

The resulting type after dereferencing.
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fn deref(&self) -> &Self::Target

Dereferences the value.

Auto Trait Implementations§

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impl<'a, A> Freeze for Context<'a, A>

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impl<'a, A> !RefUnwindSafe for Context<'a, A>

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impl<'a, A> Send for Context<'a, A>

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impl<'a, A> Sync for Context<'a, A>

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impl<'a, A> Unpin for Context<'a, A>

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impl<'a, A> !UnwindSafe for Context<'a, A>

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T> FutureExt for T

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fn with_context(self, otel_cx: Context) -> WithContext<Self>

Attaches the provided Context to this type, returning a WithContext wrapper. Read more
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fn with_current_context(self) -> WithContext<Self>

Attaches the current Context to this type, returning a WithContext wrapper. Read more
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impl<A, M> Handler<IndexedErasedUnbound<M>> for A
where A: Handler<M>, M: Castable,

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fn handle<'life0, 'life1, 'async_trait>( &'life0 mut self, cx: &'life1 Context<'_, A>, msg: IndexedErasedUnbound<M>, ) -> Pin<Box<dyn Future<Output = Result<(), Error>> + Send + 'async_trait>>
where 'life0: 'async_trait, 'life1: 'async_trait, A: 'async_trait,

Handle the next M-typed message.
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impl<T> Instrument for T

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fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided [Span], returning an Instrumented wrapper. Read more
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fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more
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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> IntoEither for T

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fn into_either(self, into_left: bool) -> Either<Self, Self>

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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impl<T> Pointable for T

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const ALIGN: usize

The alignment of pointer.
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type Init = T

The type for initializers.
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unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more
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unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more
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unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

Mutably dereferences the given pointer. Read more
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unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more
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impl<P, T> Receiver for P
where P: Deref<Target = T> + ?Sized, T: ?Sized,

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type Target = T

🔬This is a nightly-only experimental API. (arbitrary_self_types)
The target type on which the method may be called.
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<V, T> VZip<V> for T
where V: MultiLane<T>,

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fn vzip(self) -> V

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impl<T> WithSubscriber for T

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fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
where S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a [WithDispatch] wrapper. Read more
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fn with_current_subscriber(self) -> WithDispatch<Self>

Attaches the current default Subscriber to this type, returning a [WithDispatch] wrapper. Read more
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impl<T> CanOpenPort for T
where T: CanOpenPort,

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impl<T> CanResolveActorRef for T
where T: CanResolveActorRef,

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impl<T> CanSend for T
where T: CanSend,

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impl<T> CanSpawn for T
where T: CanSpawn,

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impl<T> CanSplitPort for T
where T: CanSplitPort,