Package io.netty.util.concurrent
Class FailedFuture<V>
- java.lang.Object
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- io.netty.util.concurrent.AbstractFuture<V>
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- io.netty.util.concurrent.CompleteFuture<V>
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- io.netty.util.concurrent.FailedFuture<V>
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public final class FailedFuture<V> extends CompleteFuture<V>
TheCompleteFuture
which is failed already. It is recommended to useEventExecutor.newFailedFuture(Throwable)
instead of calling the constructor of this future.
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Constructor Summary
Constructors Constructor Description FailedFuture(EventExecutor executor, Throwable cause)
Creates a new instance.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description Throwable
cause()
Returns the cause of the failed I/O operation if the I/O operation has failed.V
getNow()
Return the result without blocking.boolean
isSuccess()
Returnstrue
if and only if the I/O operation was completed successfully.Future<V>
sync()
Waits for this future until it is done, and rethrows the cause of the failure if this future failed.Future<V>
syncUninterruptibly()
Waits for this future until it is done, and rethrows the cause of the failure if this future failed.-
Methods inherited from class io.netty.util.concurrent.CompleteFuture
addListener, addListeners, await, await, await, awaitUninterruptibly, awaitUninterruptibly, awaitUninterruptibly, cancel, executor, isCancellable, isCancelled, isDone, removeListener, removeListeners
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Methods inherited from class io.netty.util.concurrent.AbstractFuture
get, get
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Constructor Detail
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FailedFuture
public FailedFuture(EventExecutor executor, Throwable cause)
Creates a new instance.- Parameters:
executor
- theEventExecutor
associated with this futurecause
- the cause of failure
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Method Detail
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cause
public Throwable cause()
Description copied from interface:Future
Returns the cause of the failed I/O operation if the I/O operation has failed.- Returns:
- the cause of the failure.
null
if succeeded or this future is not completed yet.
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isSuccess
public boolean isSuccess()
Description copied from interface:Future
Returnstrue
if and only if the I/O operation was completed successfully.
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sync
public Future<V> sync()
Description copied from interface:Future
Waits for this future until it is done, and rethrows the cause of the failure if this future failed.
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syncUninterruptibly
public Future<V> syncUninterruptibly()
Description copied from interface:Future
Waits for this future until it is done, and rethrows the cause of the failure if this future failed.- Specified by:
syncUninterruptibly
in interfaceFuture<V>
- Overrides:
syncUninterruptibly
in classCompleteFuture<V>
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getNow
public V getNow()
Description copied from interface:Future
Return the result without blocking. If the future is not done yet this will returnnull
. As it is possible that anull
value is used to mark the future as successful you also need to check if the future is really done withFuture.isDone()
and not rely on the returnednull
value.
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