Package io.confluent.parallelconsumer.state

Class ShardManager<K,V>

java.lang.Object

io.confluent.parallelconsumer.state.ShardManager<K,V>

public class ShardManager<K,V>
extends Object

Shards are local queues of work to be processed.

Generally they are keyed by one of the corresponding ParallelConsumerOptions.ProcessingOrder modes - key, partition etc...

This state is shared between the BrokerPollSystem thread (write - adding and removing shards and work) and the AbstractParallelEoSStreamProcessor Controller thread (read - how many records are in the shards?), so must be thread safe.

Constructor Summary

Constructors

Constructor	Description
ShardManager(ParallelConsumerOptions options, WorkManager<K,V> wm, Clock clock)

Method Summary

Modifier and Type	Method	Description
void	addWorkContainer(WorkContainer<K,V> wc)
Optional<Duration>	getLowestRetryTime()
long	getNumberOfWorkQueuedInShardsAwaitingSelection()
ParallelConsumerOptions	getOptions()
List<WorkContainer<K,V>>	getWorkIfAvailable(int requestedMaxWorkToRetrieve)
void	onFailure(WorkContainer<?,?> wc)	Idempotent - work may have not been removed, either way it's put back
void	onSuccess(WorkContainer<?,?> wc)
boolean	workIsWaitingToBeProcessed()

Methods inherited from class java.lang.Object

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

Constructor Details

ShardManager

public ShardManager(ParallelConsumerOptions options, WorkManager<K,V> wm, Clock clock)

Method Details

getNumberOfWorkQueuedInShardsAwaitingSelection

public long getNumberOfWorkQueuedInShardsAwaitingSelection()

Returns:

Work ready in the processing shards, awaiting selection as work to do

workIsWaitingToBeProcessed

public boolean workIsWaitingToBeProcessed()

addWorkContainer

public void addWorkContainer(WorkContainer<K,V> wc)

onSuccess

public void onSuccess(WorkContainer<?,?> wc)

onFailure

public void onFailure(WorkContainer<?,?> wc)

Idempotent - work may have not been removed, either way it's put back

getLowestRetryTime

public Optional<Duration> getLowestRetryTime()

Returns:

none if there are no messages to retry

getWorkIfAvailable

public List<WorkContainer<K,V>> getWorkIfAvailable(int requestedMaxWorkToRetrieve)

getOptions

public ParallelConsumerOptions getOptions()