Class: AWSCDK::Greengrass::CfnSubscriptionDefinitionVersion::SubscriptionProperty

Inherits:
Jsii::Struct
  • Object
show all
Defined in:
greengrass/cfn_subscription_definition_version.rb

Overview

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

See Also:

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(id:, source:, subject:, target:) ⇒ SubscriptionProperty

Returns a new instance of SubscriptionProperty.

Parameters:

  • id (String) —

    A descriptive or arbitrary ID for the subscription.

  • source (String) —

    The originator of the message.

  • subject (String) —

    The MQTT topic used to route the message.

  • target (String) —

    The destination of the message.



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# File 'greengrass/cfn_subscription_definition_version.rb', line 524

def initialize(id:, source:, subject:, target:)
  @id = id
  Jsii::Type.check_type(@id, JSON.parse(Base64.strict_decode64("eyJwcmltaXRpdmUiOiJzdHJpbmcifQ==")), "id")
  @source = source
  Jsii::Type.check_type(@source, JSON.parse(Base64.strict_decode64("eyJwcmltaXRpdmUiOiJzdHJpbmcifQ==")), "source")
  @subject = subject
  Jsii::Type.check_type(@subject, JSON.parse(Base64.strict_decode64("eyJwcmltaXRpdmUiOiJzdHJpbmcifQ==")), "subject")
  @target = target
  Jsii::Type.check_type(@target, JSON.parse(Base64.strict_decode64("eyJwcmltaXRpdmUiOiJzdHJpbmcifQ==")), "target")
end

Instance Attribute Details

#id ⇒ String (readonly)

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:_-]+ .

Returns:

  • (String)

See Also:



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# File 'greengrass/cfn_subscription_definition_version.rb', line 541

def id
  @id
end

#source ⇒ String (readonly)

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 .

Returns:

  • (String)

See Also:



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# File 'greengrass/cfn_subscription_definition_version.rb', line 548

def source
  @source
end

#subject ⇒ String (readonly)

The MQTT topic used to route the message.

Returns:

  • (String)

See Also:



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# File 'greengrass/cfn_subscription_definition_version.rb', line 553

def subject
  @subject
end

#target ⇒ String (readonly)

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 .

Returns:

  • (String)

See Also:



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# File 'greengrass/cfn_subscription_definition_version.rb', line 560

def target
  @target
end

Class Method Details

.jsii_properties ⇒ Object 



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# File 'greengrass/cfn_subscription_definition_version.rb', line 562

def self.jsii_properties
  {
    :id => "id",
    :source => "source",
    :subject => "subject",
    :target => "target",
  }
end

Instance Method Details

#to_jsii ⇒ Object 



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# File 'greengrass/cfn_subscription_definition_version.rb', line 571

def to_jsii
  result = {}
  result.merge!({
    "id" => @id,
    "source" => @source,
    "subject" => @subject,
    "target" => @target,
  })
  result.compact
end