org.apache.pulsar.broker.service.persistent

Class PersistentDispatcherSingleActiveConsumer

java.lang.Object

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

Direct Known Subclasses:

PersistentStreamingDispatcherSingleActiveConsumer

public class PersistentDispatcherSingleActiveConsumer
extends AbstractDispatcherSingleActiveConsumer
implements Dispatcher, AsyncCallbacks.ReadEntriesCallback

Field Summary

Fields

Modifier and Type	Field and Description
protected boolean	havePendingRead
protected String	name
protected int	readBatchSize
protected Backoff	readFailureBackoff
protected 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

serviceConfig, subscription

Constructor Summary

Constructors

Constructor and 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 and 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.
CompletableFuture<Void>	close() mark dispatcher closed to stop new incoming requests and disconnect all consumers.
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)
Optional<DispatchRateLimiter>	getRateLimiter()
RedeliveryTracker	getRedeliveryTracker()
void	initializeDispatchRateLimiterIfNeeded(Optional<org.apache.pulsar.common.policies.data.Policies> policies)
void	internalReadEntriesComplete(List<Entry> entries, Object obj)
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)
protected void	readMoreEntries(Consumer consumer)
void	redeliverUnacknowledgedMessages(Consumer consumer)
void	redeliverUnacknowledgedMessages(Consumer consumer, List<PositionImpl> positions)
protected void	scheduleReadOnActiveConsumer()
void	updateRateLimiter(org.apache.pulsar.common.policies.data.DispatchRate dispatchRate)

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

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

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

computeReadLimits, filterEntriesForConsumer, filterEntriesForConsumer, isConsumersExceededOnSubscription, peekStickyKey, updateEntryWrapperWithMetadata

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, cursorIsReset, disconnectActiveConsumers, disconnectAllConsumers, disconnectAllConsumers, getConsumers, getNumberOfDelayedMessages, getType, isClosed, isConsumerConnected, markDeletePositionMoveForward, removeConsumer, reset, resetCloseFuture, trackDelayedDelivery

Field Detail

topic

protected final PersistentTopic topic

name

protected final String name

havePendingRead

protected volatile boolean havePendingRead

readBatchSize

protected volatile int readBatchSize

readFailureBackoff

protected final Backoff readFailureBackoff

Constructor Detail

PersistentDispatcherSingleActiveConsumer

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

Method Detail

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

internalReadEntriesComplete

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

dispatchEntriesToConsumer

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

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)

Specified by:

redeliverUnacknowledgedMessages in interface Dispatcher

redeliverUnacknowledgedMessages

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

Specified by:

redeliverUnacknowledgedMessages in interface Dispatcher

readMoreEntries

protected void readMoreEntries(Consumer consumer)

Specified by:

readMoreEntries in class AbstractDispatcherSingleActiveConsumer

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

updateRateLimiter

public void updateRateLimiter(org.apache.pulsar.common.policies.data.DispatchRate dispatchRate)

Specified by:

updateRateLimiter in interface Dispatcher

initializeDispatchRateLimiterIfNeeded

public void initializeDispatchRateLimiterIfNeeded(Optional<org.apache.pulsar.common.policies.data.Policies> policies)

Specified by:

initializeDispatchRateLimiterIfNeeded in interface Dispatcher

close

public CompletableFuture<Void> close()

Description copied from interface: Dispatcher

mark dispatcher closed to stop new incoming requests and disconnect all consumers.

Specified by:

close in interface Dispatcher

Overrides:

close in class AbstractDispatcherSingleActiveConsumer

Returns:

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