org.apache.pulsar.broker.service

Class AbstractBaseDispatcher

java.lang.Object

org.apache.pulsar.broker.service.AbstractBaseDispatcher

All Implemented Interfaces:

Dispatcher

Direct Known Subclasses:

AbstractDispatcherMultipleConsumers, AbstractDispatcherSingleActiveConsumer

public abstract class AbstractBaseDispatcher
extends Object
implements Dispatcher

Field Summary

Fields

Modifier and Type	Field and Description
protected ServiceConfiguration	serviceConfig
protected Subscription	subscription

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	AbstractBaseDispatcher(Subscription subscription, ServiceConfiguration serviceConfig)

Method Summary

Modifier and Type	Method and Description
protected static org.apache.commons.lang3.tuple.Pair<Integer,Long>	computeReadLimits(int messagesToRead, int availablePermitsOnMsg, long bytesToRead, long availablePermitsOnByte)
void	filterEntriesForConsumer(List<Entry> entries, EntryBatchSizes batchSizes, SendMessageInfo sendMessageInfo, EntryBatchIndexesAcks indexesAcks, ManagedCursor cursor, boolean isReplayRead) Filter messages that are being sent to a consumers.
void	filterEntriesForConsumer(Optional<EntryWrapper[]> entryWrapper, int entryWrapperOffset, List<Entry> entries, EntryBatchSizes batchSizes, SendMessageInfo sendMessageInfo, EntryBatchIndexesAcks indexesAcks, ManagedCursor cursor, boolean isReplayRead)
protected abstract boolean	isConsumersExceededOnSubscription() Determine whether the number of consumers on the subscription reaches the threshold.
protected boolean	isConsumersExceededOnSubscription(BrokerService brokerService, String topic, int consumerSize)
protected byte[]	peekStickyKey(io.netty.buffer.ByteBuf metadataAndPayload)
void	resetCloseFuture()
protected int	updateEntryWrapperWithMetadata(EntryWrapper[] entryWrappers, List<Entry> entries) Update Entries with the metadata of each entry.

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, addUnAckedMessages, canUnsubscribe, checkAndUnblockIfStuck, clearDelayedMessages, close, consumerFlow, cursorIsReset, disconnectActiveConsumers, disconnectAllConsumers, disconnectAllConsumers, getConsumers, getNumberOfDelayedMessages, getRateLimiter, getRedeliveryTracker, getType, initializeDispatchRateLimiterIfNeeded, isClosed, isConsumerConnected, markDeletePositionMoveForward, redeliverUnacknowledgedMessages, redeliverUnacknowledgedMessages, removeConsumer, reset, trackDelayedDelivery, updateRateLimiter

Field Detail

subscription

protected final Subscription subscription

serviceConfig

protected final ServiceConfiguration serviceConfig

Constructor Detail

AbstractBaseDispatcher

protected AbstractBaseDispatcher(Subscription subscription,
                                 ServiceConfiguration serviceConfig)

Method Detail

updateEntryWrapperWithMetadata

protected int updateEntryWrapperWithMetadata(EntryWrapper[] entryWrappers,
                                             List<Entry> entries)

Update Entries with the metadata of each entry.

Parameters:

entries -

Returns:

filterEntriesForConsumer

public void filterEntriesForConsumer(List<Entry> entries,
                                     EntryBatchSizes batchSizes,
                                     SendMessageInfo sendMessageInfo,
                                     EntryBatchIndexesAcks indexesAcks,
                                     ManagedCursor cursor,
                                     boolean isReplayRead)

Filter messages that are being sent to a consumers.

Messages can be filtered out for multiple reasons:

• Checksum or metadata corrupted
• Message is an internal marker
• Message is not meant to be delivered immediately

Parameters:

entries - a list of entries as read from storage

batchSizes - an array where the batch size for each entry (the number of messages within an entry) is stored. This array needs to be of at least the same size as the entries list

sendMessageInfo - an object where the total size in messages and bytes will be returned back to the caller

filterEntriesForConsumer

public void filterEntriesForConsumer(Optional<EntryWrapper[]> entryWrapper,
                                     int entryWrapperOffset,
                                     List<Entry> entries,
                                     EntryBatchSizes batchSizes,
                                     SendMessageInfo sendMessageInfo,
                                     EntryBatchIndexesAcks indexesAcks,
                                     ManagedCursor cursor,
                                     boolean isReplayRead)

isConsumersExceededOnSubscription

protected abstract boolean isConsumersExceededOnSubscription()

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

Returns:

isConsumersExceededOnSubscription

protected boolean isConsumersExceededOnSubscription(BrokerService brokerService,
                                                    String topic,
                                                    int consumerSize)

resetCloseFuture

public void resetCloseFuture()

Specified by:

resetCloseFuture in interface Dispatcher

computeReadLimits

protected static org.apache.commons.lang3.tuple.Pair<Integer,Long> computeReadLimits(int messagesToRead,
                                                                                     int availablePermitsOnMsg,
                                                                                     long bytesToRead,
                                                                                     long availablePermitsOnByte)

peekStickyKey

protected byte[] peekStickyKey(io.netty.buffer.ByteBuf metadataAndPayload)