Package org.apache.pulsar.broker.service.persistent

Class PersistentDispatcherSingleActiveConsumer

java.lang.Object

org.apache.pulsar.broker.service.EntryFilterSupport

org.apache.pulsar.broker.service.AbstractBaseDispatcher

org.apache.pulsar.broker.service.AbstractDispatcherSingleActiveConsumer

org.apache.pulsar.broker.service.persistent.PersistentDispatcherSingleActiveConsumer

All Implemented Interfaces:

AsyncCallbacks.ReadEntriesCallback, Dispatcher

public class PersistentDispatcherSingleActiveConsumer
extends AbstractDispatcherSingleActiveConsumer
implements Dispatcher, AsyncCallbacks.ReadEntriesCallback

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	PersistentDispatcherSingleActiveConsumer.ReadEntriesCtx

Field Summary

Fields

Modifier and Type	Field	Description
protected final Executor	executor
protected boolean	havePendingRead
protected final String	name
protected int	readBatchSize
protected final Backoff	readFailureBackoff
protected final PersistentTopic	topic

Fields inherited from class org.apache.pulsar.broker.service.AbstractDispatcherSingleActiveConsumer

ACTIVE_CONSUMER_UPDATER, closeFuture, consumers, cursor, FALSE, IS_CLOSED_UPDATER, isFirstRead, isKeyHashRangeFiltered, partitionIndex, stickyKeyConsumerSelector, subscriptionType, topicName, TRUE

Fields inherited from class org.apache.pulsar.broker.service.AbstractBaseDispatcher

dispatchThrottlingOnBatchMessageEnabled, serviceConfig

Fields inherited from class org.apache.pulsar.broker.service.EntryFilterSupport

entryFilters, filterContext, hasFilter, subscription

Constructor Summary

Constructors

Constructor	Description
PersistentDispatcherSingleActiveConsumer(ManagedCursor cursor, org.apache.pulsar.common.api.proto.CommandSubscribe.SubType subscriptionType, int partitionIndex, PersistentTopic topic, Subscription subscription)

Method Summary

Modifier and Type	Method	Description
void	addUnAckedMessages(int unAckMessages)
protected org.apache.commons.lang3.tuple.Pair<Integer,Long>	calculateToRead(Consumer consumer)
protected void	cancelPendingRead()
boolean	checkAndUnblockIfStuck()	Checks if dispatcher is stuck and unblocks the dispatch if needed.
void	consumerFlow(Consumer consumer, int additionalNumberOfMessages)	Indicates that this consumer is now ready to receive more messages.
protected void	dispatchEntriesToConsumer(Consumer currentConsumer, List<Entry> entries, EntryBatchSizes batchSizes, EntryBatchIndexesAcks batchIndexesAcks, SendMessageInfo sendMessageInfo, long epoch)
Optional<DispatchRateLimiter>	getRateLimiter()
RedeliveryTracker	getRedeliveryTracker()
boolean	initializeDispatchRateLimiterIfNeeded()
protected boolean	isConsumersExceededOnSubscription()	Determine whether the number of consumers on the subscription reaches the threshold.
void	readEntriesComplete(List<Entry> entries, Object obj)
void	readEntriesFailed(ManagedLedgerException exception, Object ctx)
void	redeliverUnacknowledgedMessages(Consumer consumer, long consumerEpoch)
void	redeliverUnacknowledgedMessages(Consumer consumer, List<PositionImpl> positions)
protected void	reScheduleRead()
protected void	scheduleReadOnActiveConsumer()

Methods inherited from class org.apache.pulsar.broker.service.AbstractDispatcherSingleActiveConsumer

addConsumer, canUnsubscribe, close, disconnectActiveConsumers, disconnectAllConsumers, getActiveConsumer, getConsumers, getType, isClosed, isConsumerConnected, notifyActiveConsumerChanged, pickAndScheduleActiveConsumer, removeConsumer, reset, resetCloseFuture

Methods inherited from class org.apache.pulsar.broker.service.AbstractBaseDispatcher

acquirePermitsForDeliveredMessages, checkAndApplyReachedEndOfTopicOrTopicMigration, checkAndApplyReachedEndOfTopicOrTopicMigration, computeReadLimits, filterEntriesForConsumer, filterEntriesForConsumer, getFilterAcceptedMsgCount, getFilterProcessedMsgCount, getFilterRejectedMsgCount, getFilterRescheduledMsgCount, getSubscriptionName, isConsumersExceededOnSubscription, peekStickyKey, updateMessagesToRead, updatePendingBytesToDispatch

Methods inherited from class org.apache.pulsar.broker.service.EntryFilterSupport

runFiltersForEntry

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.pulsar.broker.service.Dispatcher

addConsumer, canUnsubscribe, clearDelayedMessages, close, close, cursorIsReset, disconnectActiveConsumers, disconnectAllConsumers, disconnectAllConsumers, disconnectAllConsumers, getConsumers, getFilterAcceptedMsgCount, getFilterProcessedMsgCount, getFilterRejectedMsgCount, getFilterRescheduledMsgCount, getNumberOfDelayedMessages, getType, isClosed, isConsumerConnected, markDeletePositionMoveForward, removeConsumer, reset, resetCloseFuture, trackDelayedDelivery, updateRateLimiter

Field Details

topic

protected final PersistentTopic topic

executor

protected final Executor executor

name

protected final String name

havePendingRead

protected volatile boolean havePendingRead

readBatchSize

protected volatile int readBatchSize

readFailureBackoff

protected final Backoff readFailureBackoff

Constructor Details

PersistentDispatcherSingleActiveConsumer

public PersistentDispatcherSingleActiveConsumer(ManagedCursor cursor,
 org.apache.pulsar.common.api.proto.CommandSubscribe.SubType subscriptionType,
 int partitionIndex,
 PersistentTopic topic,
 Subscription subscription)

Method Details

scheduleReadOnActiveConsumer

protected void scheduleReadOnActiveConsumer()

Specified by:

scheduleReadOnActiveConsumer in class AbstractDispatcherSingleActiveConsumer

isConsumersExceededOnSubscription

protected boolean isConsumersExceededOnSubscription()

Description copied from class: AbstractBaseDispatcher

Determine whether the number of consumers on the subscription reaches the threshold.

Specified by:

isConsumersExceededOnSubscription in class AbstractBaseDispatcher

Returns:

cancelPendingRead

protected void cancelPendingRead()

Specified by:

cancelPendingRead in class AbstractDispatcherSingleActiveConsumer

readEntriesComplete

public void readEntriesComplete(List<Entry> entries,
 Object obj)

Specified by:

readEntriesComplete in interface AsyncCallbacks.ReadEntriesCallback

dispatchEntriesToConsumer

protected void dispatchEntriesToConsumer(Consumer currentConsumer,
 List<Entry> entries,
 EntryBatchSizes batchSizes,
 EntryBatchIndexesAcks batchIndexesAcks,
 SendMessageInfo sendMessageInfo,
 long epoch)

consumerFlow

public void consumerFlow(Consumer consumer,
 int additionalNumberOfMessages)

Description copied from interface: Dispatcher

Indicates that this consumer is now ready to receive more messages.

Specified by:

consumerFlow in interface Dispatcher

redeliverUnacknowledgedMessages

public void redeliverUnacknowledgedMessages(Consumer consumer,
 long consumerEpoch)

Specified by:

redeliverUnacknowledgedMessages in interface Dispatcher

redeliverUnacknowledgedMessages

public void redeliverUnacknowledgedMessages(Consumer consumer,
 List<PositionImpl> positions)

Specified by:

redeliverUnacknowledgedMessages in interface Dispatcher

reScheduleRead

protected void reScheduleRead()

Specified by:

reScheduleRead in class AbstractBaseDispatcher

calculateToRead

protected org.apache.commons.lang3.tuple.Pair<Integer,Long> calculateToRead(Consumer consumer)

readEntriesFailed

public void readEntriesFailed(ManagedLedgerException exception,
 Object ctx)

Specified by:

readEntriesFailed in interface AsyncCallbacks.ReadEntriesCallback

addUnAckedMessages

public void addUnAckedMessages(int unAckMessages)

Specified by:

addUnAckedMessages in interface Dispatcher

getRedeliveryTracker

public RedeliveryTracker getRedeliveryTracker()

Specified by:

getRedeliveryTracker in interface Dispatcher

getRateLimiter

public Optional<DispatchRateLimiter> getRateLimiter()

Specified by:

getRateLimiter in interface Dispatcher

initializeDispatchRateLimiterIfNeeded

public boolean initializeDispatchRateLimiterIfNeeded()

Specified by:

initializeDispatchRateLimiterIfNeeded in interface Dispatcher

checkAndUnblockIfStuck

public boolean checkAndUnblockIfStuck()

Description copied from interface: Dispatcher

Checks if dispatcher is stuck and unblocks the dispatch if needed.

Specified by:

checkAndUnblockIfStuck in interface Dispatcher