com.mulesoft.connectors.mqtt3.internal.routing

Class MQTT3TopicRouter

java.lang.Object

com.mulesoft.connectors.mqtt3.internal.routing.MQTT3TopicRouter

public class MQTT3TopicRouter
extends Object

Maps subscription Topics to a set of MQTT3MessageHandlers. Uses a MQTT3TopicMatcher to route the received MQTT3Messages to the corresponding handlers.

Constructor Summary

Constructors

Constructor and Description
MQTT3TopicRouter(MQTT3TopicMatcher topicMatcher) Returns a new instance of MQTT3TopicRouter

Method Summary

Modifier and Type	Method and Description
List<Topic>	deregisterCallbackForTopics(List<Topic> topics, MQTT3MessageHandler messageHandler) Receives a list of topics and the message handler to be removed from the registry.
List<Topic>	getDistinctTopicFilters()
void	handleMessageArrived(MQTT3Message mqttMessage) Invokes each registered MQTT3MessageHandler associated to a Topic that matches the incoming MQTT3Message's destination topic.
List<Topic>	registerCallbackForTopics(List<Topic> topics, MQTT3MessageHandler messageHandler) Receives a list of topics and the message handler to be invoked when messages for those topics are received.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

MQTT3TopicRouter

public MQTT3TopicRouter(MQTT3TopicMatcher topicMatcher)

Returns a new instance of MQTT3TopicRouter

Parameters:

topicMatcher - the MQTT3TopicMatcher to use to match incoming messages to the corresponding Topics.

Method Detail

registerCallbackForTopics

public List<Topic> registerCallbackForTopics(List<Topic> topics,
                                             MQTT3MessageHandler messageHandler)

Receives a list of topics and the message handler to be invoked when messages for those topics are received. If the topic is being registered for the first time, a list of handlers is created and associated to that topic, and the messageHandler is added to the list. If the topic already has registered handlers, it adds the messageHandler to the list. Returns the list of the topics which are being registered for the first time.

deregisterCallbackForTopics

public List<Topic> deregisterCallbackForTopics(List<Topic> topics,
                                               MQTT3MessageHandler messageHandler)

Receives a list of topics and the message handler to be removed from the registry. Removes the provided handler from the list of handlers, for each of the provided topics. Returns the list of topics which no longer have any associated handlers.

getDistinctTopicFilters

public List<Topic> getDistinctTopicFilters()

Returns:

a list of all the distinct registered topic filters.

handleMessageArrived

public void handleMessageArrived(MQTT3Message mqttMessage)

Invokes each registered MQTT3MessageHandler associated to a Topic that matches the incoming MQTT3Message's destination topic.

Parameters:

mqttMessage - the incoming MQTT3Message