org.apache.activemq.transport.mqtt

Class MQTTSubscription

java.lang.Object

org.apache.activemq.transport.mqtt.MQTTSubscription

public class MQTTSubscription
extends Object

Keeps track of the MQTT client subscription so that acking is correctly done.

Constructor Summary

Constructors

Constructor and Description
MQTTSubscription(MQTTProtocolConverter protocolConverter, String topicName, org.fusesource.mqtt.client.QoS qos, ConsumerInfo consumerInfo)

Method Summary

Methods

Modifier and Type	Method and Description
MessageAck	createMessageAck(MessageDispatch md) Create a MessageAck that will acknowledge the given MessageDispatch.
org.fusesource.mqtt.codec.PUBLISH	createPublish(ActiveMQMessage message) Creates a PUBLISH command that can be sent to a remote client from an incoming ActiveMQMessage instance.
boolean	expectAck(org.fusesource.mqtt.codec.PUBLISH publish) Given a PUBLISH command determine if it will expect an ACK based on the QoS of the Publish command and the QoS of this subscription.
ConsumerInfo	getConsumerInfo() Gets the ConsumerInfo that describes the subscription sent to ActiveMQ.
ActiveMQDestination	getDestination() The real ActiveMQDestination that this subscription is assigned.
org.fusesource.mqtt.client.QoS	getQoS()
String	getTopicName()
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

MQTTSubscription

public MQTTSubscription(MQTTProtocolConverter protocolConverter,
                String topicName,
                org.fusesource.mqtt.client.QoS qos,
                ConsumerInfo consumerInfo)

Method Detail

createMessageAck

public MessageAck createMessageAck(MessageDispatch md)

Create a MessageAck that will acknowledge the given MessageDispatch.

Parameters:

md - the MessageDispatch to acknowledge.

Returns:

a new MessageAck command to acknowledge the message.

createPublish

public org.fusesource.mqtt.codec.PUBLISH createPublish(ActiveMQMessage message)
                                                throws DataFormatException,
                                                       IOException,
                                                       JMSException

Creates a PUBLISH command that can be sent to a remote client from an incoming ActiveMQMessage instance.

Parameters:

message - the message to convert to a PUBLISH command.

Returns:

a new PUBLISH command that is populated from the ActiveMQMessage.

Throws:

DataFormatException

IOException

JMSException

expectAck

public boolean expectAck(org.fusesource.mqtt.codec.PUBLISH publish)

Given a PUBLISH command determine if it will expect an ACK based on the QoS of the Publish command and the QoS of this subscription.

Parameters:

publish - The publish command to inspect.

Returns:

true if the client will expect an PUBACK for this PUBLISH.

getTopicName

public String getTopicName()

getDestination

public ActiveMQDestination getDestination()

The real ActiveMQDestination that this subscription is assigned.

Returns:

the real ActiveMQDestination assigned to this subscription.

getConsumerInfo

public ConsumerInfo getConsumerInfo()

Gets the ConsumerInfo that describes the subscription sent to ActiveMQ.

Returns:

the ConsumerInfo used to create this subscription.

getQoS

public org.fusesource.mqtt.client.QoS getQoS()

Returns:

the assigned QoS value for this subscription.

toString

public String toString()

Overrides:

toString in class Object