pub struct ViewSubscriber<D: Delta> { /* private fields */ }Expand description
Receives View broadcasts from the coordinator and advances epoch
watermarks to signal progress. Paired with a ViewMonitor that can
wait on the watermarks this subscriber advances.
Implementations§
Source§impl<D: Delta> ViewSubscriber<D>
impl<D: Delta> ViewSubscriber<D>
Sourcepub fn new(
view_rx: Receiver<Arc<View<D>>>,
initial_view: Arc<View<D>>,
) -> (Self, ViewMonitor)
pub fn new( view_rx: Receiver<Arc<View<D>>>, initial_view: Arc<View<D>>, ) -> (Self, ViewMonitor)
Creates a new ViewSubscriber and paired ViewMonitor.
Sourcepub fn initialize(&mut self) -> Arc<View<D>>
pub fn initialize(&mut self) -> Arc<View<D>>
Takes the initial view captured at subscription time, marking the subscriber as ready to receive broadcasts.
Must be called exactly once before recv(). The initial
view is captured atomically with the broadcast subscription, so it is
safe to use even when subscribing to an active writer.
Sourcepub async fn recv(&mut self) -> Result<Arc<View<D>>, SubscribeError>
pub async fn recv(&mut self) -> Result<Arc<View<D>>, SubscribeError>
Receives the next view broadcast from the coordinator.
Returns SubscribeError::NotInitialized if initialize()
has not been called.
Sourcepub fn update_applied(&self, epoch: u64)
pub fn update_applied(&self, epoch: u64)
Advances the applied watermark, signaling that the reader has processed up through the given epoch.
Sourcepub fn update_written(&self, epoch: u64)
pub fn update_written(&self, epoch: u64)
Advances the flushed watermark, signaling that the reader has processed up through the given epoch.
Sourcepub fn update_durable(&self, epoch: u64)
pub fn update_durable(&self, epoch: u64)
Advances the durable watermark, signaling that the reader has processed up through the given epoch.
Auto Trait Implementations§
impl<D> Freeze for ViewSubscriber<D>
impl<D> !RefUnwindSafe for ViewSubscriber<D>
impl<D> Send for ViewSubscriber<D>
impl<D> Sync for ViewSubscriber<D>
impl<D> Unpin for ViewSubscriber<D>
impl<D> UnsafeUnpin for ViewSubscriber<D>
impl<D> !UnwindSafe for ViewSubscriber<D>
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