class aws_cdk.aws_sns.Subscription(scope, id, *, topic, endpoint, protocol, dead_letter_queue=None, filter_policy=None, filter_policy_with_message_body=None, raw_message_delivery=None, region=None, subscription_role_arn=None)

Bases: Resource

A new subscription.

Prefer to use the ITopic.addSubscription() methods to create instances of this class.




from aws_cdk.aws_kinesisfirehose_alpha import DeliveryStream
# stream: DeliveryStream

topic = sns.Topic(self, "Topic")

sns.Subscription(self, "Subscription",
  • scope (Construct) –

  • id (str) –

  • topic (ITopic) – The topic to subscribe to.

  • endpoint (str) – The subscription endpoint. The meaning of this value depends on the value for ‘protocol’.

  • protocol (SubscriptionProtocol) – What type of subscription to add.

  • dead_letter_queue (Optional[IQueue]) – Queue to be used as dead letter queue. If not passed no dead letter queue is enabled. Default: - No dead letter queue enabled.

  • filter_policy (Optional[Mapping[str, SubscriptionFilter]]) – The filter policy. Default: - all messages are delivered

  • filter_policy_with_message_body (Optional[Mapping[str, FilterOrPolicy]]) – The filter policy that is applied on the message body. To apply a filter policy to the message attributes, use filterPolicy. A maximum of one of filterPolicyWithMessageBody and filterPolicy may be used. Default: - all messages are delivered

  • raw_message_delivery (Optional[bool]) – true if raw message delivery is enabled for the subscription. Raw messages are free of JSON formatting and can be sent to HTTP/S and Amazon SQS endpoints. For more information, see GetSubscriptionAttributes in the Amazon Simple Notification Service API Reference. Default: false

  • region (Optional[str]) – The region where the topic resides, in the case of cross-region subscriptions. Default: - the region where the CloudFormation stack is being deployed.

  • subscription_role_arn (Optional[str]) – Arn of role allowing access to firehose delivery stream. Required for a firehose subscription protocol. Default: - No subscription role is provided



Apply the given removal policy to this resource.

The Removal Policy controls what happens to this resource when it stops being managed by CloudFormation, either because you’ve removed it from the CDK application or because you’ve made a change that requires the resource to be replaced.

The resource can be deleted (RemovalPolicy.DESTROY), or left in your AWS account for data recovery and cleanup later (RemovalPolicy.RETAIN).


policy (RemovalPolicy) –

Return type:



Returns a string representation of this construct.

Return type:




The DLQ associated with this subscription if present.


The environment this resource belongs to.

For resources that are created and managed by the CDK (generally, those created by creating new class instances like Role, Bucket, etc.), this is always the same as the environment of the stack they belong to; however, for imported resources (those obtained from static methods like fromRoleArn, fromBucketName, etc.), that might be different than the stack they were imported into.


The tree node.


The stack in which this resource is defined.

Static Methods

classmethod is_construct(x)

Checks if x is a construct.

Use this method instead of instanceof to properly detect Construct instances, even when the construct library is symlinked.

Explanation: in JavaScript, multiple copies of the constructs library on disk are seen as independent, completely different libraries. As a consequence, the class Construct in each copy of the constructs library is seen as a different class, and an instance of one class will not test as instanceof the other class. npm install will not create installations like this, but users may manually symlink construct libraries together or use a monorepo tool: in those cases, multiple copies of the constructs library can be accidentally installed, and instanceof will behave unpredictably. It is safest to avoid using instanceof, and using this type-testing method instead.


x (Any) – Any object.

Return type:



true if x is an object created from a class which extends Construct.

classmethod is_owned_resource(construct)

Returns true if the construct was created by CDK, and false otherwise.


construct (IConstruct) –

Return type:


classmethod is_resource(construct)

Check whether the given construct is a Resource.


construct (IConstruct) –

Return type: