MessageListener (Pulsar Client :: API 2.10.3.6 API)

All Superinterfaces:

java.io.Serializable
```
@Public
@Stable
public interface MessageListener<T>
extends java.io.Serializable
```
A listener that will be called in order for every message received.

Method Summary

All Methods Instance Methods Abstract Methods Default Methods
Modifier and Type	Method	Description
`default void`	`reachedEndOfTopic(Consumer<T> consumer)`	Get the notification when a topic is terminated.
`void`	`received(Consumer<T> consumer, Message<T> msg)`	This method is called whenever a new message is received.

- Method Detail
  - received
```
void received(Consumer<T> consumer,
              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.
    Application is responsible for acking message by calling any of consumer acknowledgement methods.
    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<T> consumer)
```
    Get the notification when a topic is terminated.
    
    Parameters:
    
    consumer - the Consumer object associated with the terminated topic