Struct PersistentWatcher

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pub struct PersistentWatcher { /* private fields */ }

Expand description

Watcher for persistent and recursive watch.

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impl PersistentWatcher

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pub async fn changed(&mut self) -> WatchedEvent

Waits for next event which could be node event or session activities.

§Panics

Panic after terminal session event received.

§BUG

Events during reconnection could be lost due to ZOOKEEPER-4698, as events during connection loss are not delivered in auto watch reset. So, callers should rebuild their knowledge to avoid data inconsistency after SessionState::Disconnected and following SessionState::SyncConnected. See also OneshotWatcher::changed.

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pub async fn remove(self) -> Result<(), Error>

👎Deprecated since 0.10.0: Rust has Drop

Removes this watcher.

§Cautions

It is a best effect as ZooKeeper (ZOOKEEPER-4472) does not support persistent watch removing individually.

Trait Implementations§

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impl Debug for PersistentWatcher

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more

Auto Trait Implementations§

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impl !UnwindSafe for PersistentWatcher

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> 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 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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