software.amazon.awscdk.services.iot.actions

Enum MqttQualityOfService

java.lang.Object

java.lang.Enum<MqttQualityOfService>

software.amazon.awscdk.services.iot.actions.MqttQualityOfService

All Implemented Interfaces:

Serializable, Comparable<MqttQualityOfService>

@Generated(value="jsii-pacmak/1.67.0 (build 2c027f5)",
           date="2022-09-07T23:47:08.564Z")
 @Stability(value=Experimental)
public enum MqttQualityOfService
extends Enum<MqttQualityOfService>

(experimental) MQTT Quality of Service (QoS) indicates the level of assurance for delivery of an MQTT Message.

Example:

 TopicRule.Builder.create(this, "TopicRule")
         .sql(IotSql.fromStringAsVer20160323("SELECT topic(2) as device_id, timestamp() as timestamp, temperature FROM 'device/+/data'"))
         .actions(List.of(
             IotRepublishMqttAction.Builder.create("${topic()}/republish")
                     .qualityOfService(MqttQualityOfService.AT_LEAST_ONCE)
                     .build()))
         .build();
 

See Also:

https://docs.aws.amazon.com/iot/latest/developerguide/mqtt.html#mqtt-qos

Enum Constant Summary

Enum Constants

Enum Constant and Description
AT_LEAST_ONCE (experimental) QoS level 1.
ZERO_OR_MORE_TIMES (experimental) QoS level 0.

Method Summary

Modifier and Type	Method and Description
static MqttQualityOfService	valueOf(String name) Returns the enum constant of this type with the specified name.
static MqttQualityOfService[]	values() Returns an array containing the constants of this enum type, in the order they are declared.

Methods inherited from class java.lang.Enum

clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Detail

ZERO_OR_MORE_TIMES

@Stability(value=Experimental)
public static final MqttQualityOfService ZERO_OR_MORE_TIMES

(experimental) QoS level 0.

Sent zero or more times. This level should be used for messages that are sent over reliable communication links or that can be missed without a problem.

AT_LEAST_ONCE

@Stability(value=Experimental)
public static final MqttQualityOfService AT_LEAST_ONCE

(experimental) QoS level 1.

Sent at least one time, and then repeatedly until a PUBACK response is received. The message is not considered complete until the sender receives a PUBACK response to indicate successful delivery.

Method Detail

values

public static MqttQualityOfService[] values()

Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:

for (MqttQualityOfService c : MqttQualityOfService.values())
    System.out.println(c);

Returns:

an array containing the constants of this enum type, in the order they are declared

valueOf

public static MqttQualityOfService valueOf(String name)

Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)

Parameters:

name - the name of the enum constant to be returned.

Returns:

the enum constant with the specified name

Throws:

IllegalArgumentException - if this enum type has no constant with the specified name

NullPointerException - if the argument is null