Package org.infinispan.distexec

Class DistributedExecutionCompletionService<V>

java.lang.Object

org.infinispan.distexec.DistributedExecutionCompletionService<V>

All Implemented Interfaces:

CompletionService<V>

public class DistributedExecutionCompletionService<V>
extends Object
implements CompletionService<V>

A CompletionService that uses a supplied DistributedExecutorService to execute tasks. This class arranges that submitted tasks are, upon completion, placed on a queue accessible using take. The class is lightweight enough to be suitable for transient use when processing groups of tasks.

This class must be used instead of a ExecutorCompletionService provided from java.util.concurrent package. The ExecutorCompletionService may not be used since it requires the use of a non serializable RunnableFuture object.

Author:

William Burns, Vladimir Blagojevic

Field Summary

Fields

Modifier and Type	Field	Description
protected BlockingQueue<CompletableFuture<V>>	completionQueue
protected DistributedExecutorService	executor

Constructor Summary

Constructors

Constructor	Description
DistributedExecutionCompletionService(DistributedExecutorService executor)	Creates an ExecutorCompletionService using the supplied executor for base task execution and a LinkedBlockingQueue as a completion queue.
DistributedExecutionCompletionService(DistributedExecutorService executor, BlockingQueue<CompletableFuture<V>> completionQueue)	Creates an ExecutorCompletionService using the supplied executor for base task execution and the supplied queue as its completion queue.

Method Summary

Modifier and Type	Method	Description
CompletableFuture<V>	poll()	{@inheritDoc CompletionService}
CompletableFuture<V>	poll(long timeout, TimeUnit unit)	{@inheritDoc CompletionService}
CompletableFuture<V>	submit(Runnable task, V result)	{@inheritDoc CompletionService}
CompletableFuture<V>	submit(Callable<V> task)	{@inheritDoc CompletionService}
<K> Future<V>	submit(Callable<V> task, K... input)
<K> CompletableFuture<V>	submit(Address target, Callable<V> task)
List<CompletableFuture<V>>	submitEverywhere(Callable<V> task)
<K> List<CompletableFuture<V>>	submitEverywhere(Callable<V> task, K... input)
CompletableFuture<V>	take()	{@inheritDoc CompletionService}

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

executor

protected final DistributedExecutorService executor

completionQueue

protected final BlockingQueue<CompletableFuture<V>> completionQueue

Constructor Detail

DistributedExecutionCompletionService

public DistributedExecutionCompletionService(DistributedExecutorService executor)

Creates an ExecutorCompletionService using the supplied executor for base task execution and a LinkedBlockingQueue as a completion queue.

Parameters:

executor - the executor to use

Throws:

NullPointerException - if executor is null

DistributedExecutionCompletionService

public DistributedExecutionCompletionService(DistributedExecutorService executor,
                                             BlockingQueue<CompletableFuture<V>> completionQueue)

Creates an ExecutorCompletionService using the supplied executor for base task execution and the supplied queue as its completion queue. Note: PriorityBlockingQueue for completionQueue can only be used with accompanying Comparator as our internal implementation of Future for each subtask does not implement Comparable interface. Note that we do not provide any guarantees about which particular internal class implements Future interface and these APIs will remain internal.

Parameters:

executor - the executor to use

completionQueue - the queue to use as the completion queue normally one dedicated for use by this service

Throws:

NullPointerException - if executor is null

Method Detail

submit

public CompletableFuture<V> submit(Callable<V> task)

{@inheritDoc CompletionService}

Specified by:

submit in interface CompletionService<V>

submit

public CompletableFuture<V> submit(Runnable task,
                                   V result)

{@inheritDoc CompletionService}

Specified by:

submit in interface CompletionService<V>

take

public CompletableFuture<V> take()
                          throws InterruptedException

{@inheritDoc CompletionService}

Specified by:

take in interface CompletionService<V>

Throws:

InterruptedException

poll

public CompletableFuture<V> poll()

{@inheritDoc CompletionService}

Specified by:

poll in interface CompletionService<V>

poll

public CompletableFuture<V> poll(long timeout,
                                 TimeUnit unit)
                          throws InterruptedException

{@inheritDoc CompletionService}

Specified by:

poll in interface CompletionService<V>

Throws:

InterruptedException

submit

public <K> Future<V> submit(Callable<V> task,
                            K... input)

submitEverywhere

public List<CompletableFuture<V>> submitEverywhere(Callable<V> task)

submitEverywhere

public <K> List<CompletableFuture<V>> submitEverywhere(Callable<V> task,
                                                       K... input)

submit

public <K> CompletableFuture<V> submit(Address target,
                                       Callable<V> task)