Package software.amazon.awssdk.crt.mqtt

Class MqttMessage

java.lang.Object

software.amazon.awssdk.crt.mqtt.MqttMessage

public final class MqttMessage
extends Object

Represents a message to publish, or a message that was received.

Constructor Summary

Constructors

Constructor	Description
MqttMessage(String topic, byte[] payload)	Deprecated. Use alternate constructor.
MqttMessage(String topic, byte[] payload, QualityOfService qos)	Constructs a new message.
MqttMessage(String topic, byte[] payload, QualityOfService qos, boolean retain)	Constructs a new message.
MqttMessage(String topic, byte[] payload, QualityOfService qos, boolean retain, boolean dup)	Constructs a new message.

Method Summary

Modifier and Type	Method	Description
boolean	getDup()	Gets the DUP flag.
byte[]	getPayload()	Gets the message payload
QualityOfService	getQos()	Gets the QualityOfService.
boolean	getRetain()	Gets the retain flag.
String	getTopic()	Gets the topic associated with this message

Methods inherited from class java.lang.Object

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

Constructor Details

MqttMessage

public MqttMessage(String topic,
 byte[] payload,
 QualityOfService qos,
 boolean retain,
 boolean dup)

Constructs a new message.

Parameters:

topic - Message topic.

payload - Message payload.

qos - QualityOfService. When sending, the QualityOfService to use for delivery. When receiving, the QualityOfService used for delivery.

retain - Retain flag. When sending, whether the message should be retained by the broker and delivered to future subscribers. When receiving, whether the message was sent as a result of a new subscription being made.

dup - DUP flag. Ignored when sending. When receiving, indicates whether this might be re-delivery of an earlier attempt to send the message.

MqttMessage

public MqttMessage(String topic,
 byte[] payload,
 QualityOfService qos,
 boolean retain)

Constructs a new message.

Parameters:

topic - Message topic.

payload - Message payload.

qos - QualityOfService. When sending, the QualityOfService to use for delivery. When receiving, the QualityOfService used for delivery.

retain - Retain flag. When sending, whether the message should be retained by the broker and delivered to future subscribers. When receiving, whether the message was sent as a result of a new subscription being made.

MqttMessage

public MqttMessage(String topic,
 byte[] payload,
 QualityOfService qos)

Constructs a new message.

Parameters:

topic - Message topic.

payload - Message payload.

qos - QualityOfService. When sending, the QualityOfService to use for delivery. When receiving, the QualityOfService used for delivery.

MqttMessage

@Deprecated
public MqttMessage(String topic,
 byte[] payload)

Deprecated.

Use alternate constructor.

Parameters:

topic - Message topic.

payload - Message payload.

Method Details

getTopic

public String getTopic()

Gets the topic associated with this message

Returns:

The topic

getPayload

public byte[] getPayload()

Gets the message payload

Returns:

Message payload

getQos

public QualityOfService getQos()

Gets the QualityOfService. When sending, the QualityOfService to use for delivery. When receiving, the QualityOfService used for delivery.

Returns:

The QualityOfService

getRetain

public boolean getRetain()

Gets the retain flag. When sending, whether the message should be retained by the broker and delivered to future subscribers. When receiving, whether the message was sent as a result of a new subscription being made.

Returns:

Retain flag

getDup

public boolean getDup()

Gets the DUP flag. Ignored when sending. When receiving, indicates whether this might be re-delivery of an earlier attempt to send the message.

Returns:

DUP flag