pub struct Sink<T: Record> { /* private fields */ }Expand description
The single consumer of a source’s bounded queue.
Messages leave the queue only when the sink receives them, so a slow sink applies
backpressure to producers (ChannelFull) instead of losing accepted input. Dropping the
sink disconnects every producer.
Implementations§
Source§impl<T: Record> Sink<T>
impl<T: Record> Sink<T>
Sourcepub fn poll(&mut self) -> Option<RecordBatch>
pub fn poll(&mut self) -> Option<RecordBatch>
Non-blocking poll. Returns the next batch.
Returns None on empty or closed queue. Check is_disconnected()
to distinguish.
Sourcepub async fn recv_async(&mut self) -> Result<RecordBatch, RecvError>
pub async fn recv_async(&mut self) -> Result<RecordBatch, RecvError>
Async receive. Awaits the next batch. Cancellation never loses a message.
§Errors
Returns RecvError::Disconnected once every producer has been dropped and the queue is
empty.
Sourcepub fn is_disconnected(&self) -> bool
pub fn is_disconnected(&self) -> bool
Returns true if the queue has been observed closed and drained.
Trait Implementations§
Auto Trait Implementations§
impl<T> !RefUnwindSafe for Sink<T>
impl<T> !Sync for Sink<T>
impl<T> !UnwindSafe for Sink<T>
impl<T> Freeze for Sink<T>where
AsyncConsumer<SourceMessage<T>>: Freeze,
impl<T> Send for Sink<T>where
AsyncConsumer<SourceMessage<T>>: Send,
impl<T> Unpin for Sink<T>where
AsyncConsumer<SourceMessage<T>>: Unpin,
impl<T> UnsafeUnpin for Sink<T>where
AsyncConsumer<SourceMessage<T>>: UnsafeUnpin,
Blanket Implementations§
§impl<T> ArchivePointee for T
impl<T> ArchivePointee for T
§type ArchivedMetadata = ()
type ArchivedMetadata = ()
The archived version of the pointer metadata for this type.
§fn pointer_metadata(
_: &<T as ArchivePointee>::ArchivedMetadata,
) -> <T as Pointee>::Metadata
fn pointer_metadata( _: &<T as ArchivePointee>::ArchivedMetadata, ) -> <T as Pointee>::Metadata
Converts some archived metadata to the pointer metadata for itself.
Source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
Source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
§impl<T> Instrument for T
impl<T> Instrument for T
§fn instrument(self, span: Span) -> Instrumented<Self> ⓘ
fn instrument(self, span: Span) -> Instrumented<Self> ⓘ
Source§impl<T> IntoEither for T
impl<T> IntoEither for T
Source§fn into_either(self, into_left: bool) -> Either<Self, Self> ⓘ
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 moreSource§fn into_either_with<F>(self, into_left: F) -> Either<Self, Self> ⓘ
fn into_either_with<F>(self, into_left: F) -> Either<Self, Self> ⓘ
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§impl<T> IntoRequest<T> for T
impl<T> IntoRequest<T> for T
§fn into_request(self) -> Request<T>
fn into_request(self) -> Request<T>
Wrap the input message
T in a tonic::Request§impl<L> LayerExt<L> for L
impl<L> LayerExt<L> for L
§fn named_layer<S>(&self, service: S) -> Layered<<L as Layer<S>>::Service, S>where
L: Layer<S>,
fn named_layer<S>(&self, service: S) -> Layered<<L as Layer<S>>::Service, S>where
L: Layer<S>,
Applies the layer to a service and wraps it in [
Layered].§impl<T> LayoutRaw for T
impl<T> LayoutRaw for T
§fn layout_raw(_: <T as Pointee>::Metadata) -> Result<Layout, LayoutError>
fn layout_raw(_: <T as Pointee>::Metadata) -> Result<Layout, LayoutError>
Returns the layout of the type.