pub struct Subscription<T: Record> { /* private fields */ }Expand description
A subscription to a streaming sink. Each subscriber independently receives every message via broadcast.
Implementations§
Source§impl<T: Record> Subscription<T>
impl<T: Record> Subscription<T>
Sourcepub fn poll(&mut self) -> Option<RecordBatch>
pub fn poll(&mut self) -> Option<RecordBatch>
Non-blocking poll. Returns the next batch, skipping watermarks.
Returns None on empty or closed channel. 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, skipping watermarks.
§Errors
Returns RecvError::Disconnected if the source has been dropped.
Sourcepub fn recv(&mut self) -> Result<RecordBatch, RecvError>
pub fn recv(&mut self) -> Result<RecordBatch, RecvError>
Blocking receive. Uses tokio’s waker-based blocking_recv.
§Errors
Returns RecvError::Disconnected if the source has been dropped.
Sourcepub fn recv_timeout(
&mut self,
timeout: Duration,
) -> Result<RecordBatch, RecvError>
pub fn recv_timeout( &mut self, timeout: Duration, ) -> Result<RecordBatch, RecvError>
Blocking receive with timeout. Requires a tokio runtime in the current thread context.
§Errors
Returns RecvError::Timeout or RecvError::Disconnected.
Sourcepub fn is_disconnected(&self) -> bool
pub fn is_disconnected(&self) -> bool
Returns true if the channel has been observed closed.
Trait Implementations§
Auto Trait Implementations§
impl<T> Freeze for Subscription<T>
impl<T> !RefUnwindSafe for Subscription<T>
impl<T> Send for Subscription<T>
impl<T> Sync for Subscription<T>
impl<T> Unpin for Subscription<T>
impl<T> UnsafeUnpin for Subscription<T>
impl<T> !UnwindSafe for Subscription<T>
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>
§fn in_current_span(self) -> Instrumented<Self>
fn in_current_span(self) -> 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> 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.