Package io.netty.util.concurrent
Class PromiseNotifier<V,F extends Future<V>>
- java.lang.Object
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- io.netty.util.concurrent.PromiseNotifier<V,F>
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- Type Parameters:
V
- the type of value returned by the futureF
- the type of future
- All Implemented Interfaces:
GenericFutureListener<F>
,java.util.EventListener
- Direct Known Subclasses:
ChannelPromiseNotifier
public class PromiseNotifier<V,F extends Future<V>> extends java.lang.Object implements GenericFutureListener<F>
GenericFutureListener
implementation which takes otherPromise
s and notifies them on completion.
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Constructor Summary
Constructors Constructor Description PromiseNotifier(boolean logNotifyFailure, Promise<? super V>... promises)
Create a new instance.PromiseNotifier(Promise<? super V>... promises)
Create a new instance.
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Method Summary
All Methods Static Methods Instance Methods Concrete Methods Modifier and Type Method Description static <V,F extends Future<V>>
Fcascade(boolean logNotifyFailure, F future, Promise<? super V> promise)
static <V,F extends Future<V>>
Fcascade(F future, Promise<? super V> promise)
void
operationComplete(F future)
Invoked when the operation associated with theFuture
has been completed.
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Constructor Detail
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PromiseNotifier
@SafeVarargs public PromiseNotifier(Promise<? super V>... promises)
Create a new instance.- Parameters:
promises
- thePromise
s to notify once thisGenericFutureListener
is notified.
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PromiseNotifier
@SafeVarargs public PromiseNotifier(boolean logNotifyFailure, Promise<? super V>... promises)
Create a new instance.- Parameters:
logNotifyFailure
-true
if logging should be done in case notification fails.promises
- thePromise
s to notify once thisGenericFutureListener
is notified.
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Method Detail
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cascade
public static <V,F extends Future<V>> F cascade(boolean logNotifyFailure, F future, Promise<? super V> promise)
Link theFuture
andPromise
such that if theFuture
completes thePromise
will be notified. Cancellation is propagated both ways such that if theFuture
is cancelled thePromise
is cancelled and vise-versa.- Type Parameters:
V
- the type of the value.F
- the type of theFuture
- Parameters:
logNotifyFailure
-true
if logging should be done in case notification fails.future
- theFuture
which will be used to listen to for notifying thePromise
.promise
- thePromise
which will be notified- Returns:
- the passed in
Future
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operationComplete
public void operationComplete(F future) throws java.lang.Exception
Description copied from interface:GenericFutureListener
Invoked when the operation associated with theFuture
has been completed.- Specified by:
operationComplete
in interfaceGenericFutureListener<V>
- Parameters:
future
- the sourceFuture
which called this callback- Throws:
java.lang.Exception
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