Package org.apache.pulsar.client.api

Interface MessageListener<T>

All Superinterfaces:

Serializable

public interface MessageListener<T>
extends Serializable

A listener that will be called in order for every message received.

Method Summary

Modifier and Type	Method	Description
default void	reachedEndOfTopic(Consumer consumer)	Get the notification when a topic is terminated.
void	received(Consumer consumer, org.apache.pulsar.client.api.Message<T> msg)	This method is called whenever a new message is received.

Method Details

received

void received(Consumer consumer,
 org.apache.pulsar.client.api.Message<T> msg)

This method is called whenever a new message is received. Messages are guaranteed to be delivered in order and from the same thread for a single consumer This method will only be called once for each message, unless either application or broker crashes. Implementation should acknowledge messages by calling consumer.acknowledge(msg). Application is responsible of handling any exception that could be thrown while processing the message.

Parameters:

consumer - the consumer that received the message

msg - the message object

reachedEndOfTopic

default void reachedEndOfTopic(Consumer consumer)

Get the notification when a topic is terminated.

Parameters:

consumer - the Consumer object associated with the terminated topic