Projector

eventually_util::inmemory

Struct Projector 

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pub struct Projector<P, S>
where
    P: Projection,
{ /* private fields */ }
Expand description

A Projector manages the state of a single Projection by opening a long-running stream of all events coming from the EventStore.

New instances of a Projector are obtainable through a ProjectorBuilder instance.

The Projector will start updating the Projection state when run is called.

At each update, the Projector will broadcast the latest version of the Projection on a Stream obtainable through watch.

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impl<P, S> Projector<P, S>
where P: Projection, <P as Projection>::SourceId: Debug, <P as Projection>::Event: Debug, S: Subscription<SourceId = P::SourceId, Event = P::Event>, <P as Projection>::Error: StdError + Send + Sync + 'static, <S as Subscription>::Error: StdError + Send + Sync + 'static,

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pub fn new(projection: Arc<RwLock<P>>, subscription: S) -> Self

Create a new Projector from the provided Projection and Subscription values.

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pub async fn run(&mut self) -> Result<()>

Starts the update of the Projection by processing all the events coming from the EventStore.

Auto Trait Implementations§

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impl<P, S> Freeze for Projector<P, S>
where S: Freeze,

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impl<P, S> !RefUnwindSafe for Projector<P, S>

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impl<P, S> Send for Projector<P, S>
where S: Send, P: Send + Sync,

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impl<P, S> Sync for Projector<P, S>
where S: Sync, P: Send + Sync,

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impl<P, S> Unpin for Projector<P, S>
where S: Unpin,

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impl<P, S> !UnwindSafe for Projector<P, S>

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, 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, 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.