software.amazon.awscdk.services.greengrass

Interface CfnSubscriptionDefinitionVersion.SubscriptionProperty

All Known Implementing Classes:

CfnSubscriptionDefinitionVersion.SubscriptionProperty.Jsii$Proxy

Enclosing class:

CfnSubscriptionDefinitionVersion

public static interface CfnSubscriptionDefinitionVersion.SubscriptionProperty

Subscriptions define how MQTT messages can be exchanged between devices, functions, and connectors in the group, and with AWS IoT or the local shadow service.

A subscription defines a message source, message target, and a topic (or subject) that's used to route messages from the source to the target. A subscription defines the message flow in one direction, from the source to the target. For two-way communication, you must set up two subscriptions, one for each direction.

In an AWS CloudFormation template, the Subscriptions property of the AWS::Greengrass::SubscriptionDefinitionVersion resource contains a list of Subscription property types.

Example:

 // The code below shows an example of how to instantiate this type.
 // The values are placeholders you should change.
 import software.amazon.awscdk.services.greengrass.*;
 SubscriptionProperty subscriptionProperty = SubscriptionProperty.builder()
         .id("id")
         .source("source")
         .subject("subject")
         .target("target")
         .build();
 

Nested Class Summary

Nested Classes

Modifier and Type	Interface and Description
static class	CfnSubscriptionDefinitionVersion.SubscriptionProperty.Builder A builder for CfnSubscriptionDefinitionVersion.SubscriptionProperty
static class	CfnSubscriptionDefinitionVersion.SubscriptionProperty.Jsii$Proxy An implementation for CfnSubscriptionDefinitionVersion.SubscriptionProperty

Method Summary

Modifier and Type	Method and Description
static CfnSubscriptionDefinitionVersion.SubscriptionProperty.Builder	builder()
java.lang.String	getId() A descriptive or arbitrary ID for the subscription.
java.lang.String	getSource() The originator of the message.
java.lang.String	getSubject() The MQTT topic used to route the message.
java.lang.String	getTarget() The destination of the message.

Method Detail

getId

java.lang.String getId()

A descriptive or arbitrary ID for the subscription.

This value must be unique within the subscription definition version. Maximum length is 128 characters with pattern [a-zA-Z0-9:_-]+ .

getSource

java.lang.String getSource()

The originator of the message.

The value can be a thing ARN, the ARN of a Lambda function alias (recommended) or version, a connector ARN, cloud (which represents the AWS IoT cloud), or GGShadowService .

getSubject

java.lang.String getSubject()

The MQTT topic used to route the message.

getTarget

java.lang.String getTarget()

The destination of the message.

The value can be a thing ARN, the ARN of a Lambda function alias (recommended) or version, a connector ARN, cloud (which represents the AWS IoT cloud), or GGShadowService .

builder

static CfnSubscriptionDefinitionVersion.SubscriptionProperty.Builder builder()

Returns:

a CfnSubscriptionDefinitionVersion.SubscriptionProperty.Builder of CfnSubscriptionDefinitionVersion.SubscriptionProperty