TopicListener (ambry-api 0.3.439 API)

Type Parameters:

T - The type of message the listener will receive.
```
public interface TopicListener<T>
```
A TopicListener can subscribe topics for messages through a Notifier.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`void`	`onMessage(java.lang.String topic, T message)`	After the `TopicListener` has subscribed the topic, this method will be called when there is a new message for the topic.

- Method Detail
  - onMessage
```
void onMessage(java.lang.String topic,
               T message)
```
    After the TopicListener has subscribed the topic, this method will be called when there is a new message for the topic.
    
    Parameters:
    
    topic - The topic this TopicListener subscribes.
    
    message - The message for the topic.