Package org.redisson.api

Interface RReliableTopicAsync

All Superinterfaces:

RExpirableAsync, RObjectAsync

All Known Subinterfaces:

RReliableTopic

All Known Implementing Classes:

RedissonReliableTopic

public interface RReliableTopicAsync
extends RExpirableAsync

Asynchronous interface for Reliable topic based on Redis Stream object.

Dedicated Redis connection is allocated per instance (subscriber) of this object. Messages are delivered to all listeners attached to the same Redis setup.

Requires Redis 5.0.0 and higher.

Author:

Nikita Koksharov

Method Summary

Modifier and Type	Method	Description
<M> RFuture<String>	addListenerAsync(Class<M> type, MessageListener<M> listener)	Subscribes to this topic.
RFuture<Integer>	countSubscribersAsync()	Returns amount of subscribers to this topic across all Redisson instances.
RFuture<Long>	publishAsync(Object message)	Publish the message to all subscribers of this topic asynchronously.
RFuture<Void>	removeAllListenersAsync()	Removes all listeners attached to this topic instance
RFuture<Void>	removeListenerAsync(String... listenerIds)	Removes the listener by id attached to this topic instance
RFuture<Long>	sizeAsync()	Amount of messages stored in Redis Stream object.

Methods inherited from interface org.redisson.api.RExpirableAsync

clearExpireAsync, expireAsync, expireAsync, expireAsync, expireAtAsync, expireAtAsync, expireIfGreaterAsync, expireIfGreaterAsync, expireIfLessAsync, expireIfLessAsync, expireIfNotSetAsync, expireIfNotSetAsync, expireIfSetAsync, expireIfSetAsync, getExpireTimeAsync, remainTimeToLiveAsync

Methods inherited from interface org.redisson.api.RObjectAsync

addListenerAsync, copyAsync, deleteAsync, dumpAsync, getIdleTimeAsync, isExistsAsync, migrateAsync, moveAsync, removeListenerAsync, renameAsync, renamenxAsync, restoreAndReplaceAsync, restoreAndReplaceAsync, restoreAsync, restoreAsync, sizeInMemoryAsync, touchAsync, unlinkAsync

Method Details

sizeAsync

RFuture<Long> sizeAsync()

Amount of messages stored in Redis Stream object.

Returns:

amount of messages

publishAsync

RFuture<Long> publishAsync(Object message)

Publish the message to all subscribers of this topic asynchronously. Each subscriber may have multiple listeners.

Parameters:

message - to send

Returns:

number of subscribers that received the message

addListenerAsync

<M> RFuture<String> addListenerAsync(Class<M> type,
 MessageListener<M> listener)

Subscribes to this topic. MessageListener.onMessage method is called when any message is published on this topic.

Though messages broadcasted across all topic instances, listener is attached to this topic instance.

Watchdog is started when listener was registered.

Type Parameters:

M - - type of message

Parameters:

type - - type of message

listener - for messages

Returns:

id of listener attached to this topic instance

See Also:

• Config.setReliableTopicWatchdogTimeout(long)
• MessageListener

removeListenerAsync

RFuture<Void> removeListenerAsync(String... listenerIds)

Removes the listener by id attached to this topic instance

Parameters:

listenerIds - - listener ids

Returns:

void

removeAllListenersAsync

RFuture<Void> removeAllListenersAsync()

Removes all listeners attached to this topic instance

countSubscribersAsync

RFuture<Integer> countSubscribersAsync()

Returns amount of subscribers to this topic across all Redisson instances. Each subscriber may have multiple listeners.

Returns:

amount of subscribers