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[ aws . sns ]



Returns all of the properties of a topic. Topic properties returned might differ based on the authorization of the user.

See also: AWS API Documentation

See 'aws help' for descriptions of global parameters.


--topic-arn <value>
[--cli-input-json <value>]
[--generate-cli-skeleton <value>]


--topic-arn (string)

The ARN of the topic whose properties you want to get.

--cli-input-json (string) Performs service operation based on the JSON string provided. The JSON string follows the format provided by --generate-cli-skeleton. If other arguments are provided on the command line, the CLI values will override the JSON-provided values. It is not possible to pass arbitrary binary values using a JSON-provided value as the string will be taken literally.

--generate-cli-skeleton (string) Prints a JSON skeleton to standard output without sending an API request. If provided with no value or the value input, prints a sample input JSON that can be used as an argument for --cli-input-json. If provided with the value output, it validates the command inputs and returns a sample output JSON for that command.

See 'aws help' for descriptions of global parameters.


To retrieve the attributes of a topic

The following get-topic-attributes example displays the attributes for the specified topic.

aws sns get-topic-attributes \
    --topic-arn "arn:aws:sns:us-west-2:123456789012:my-topic"


    "Attributes": {
        "SubscriptionsConfirmed": "1",
        "DisplayName": "my-topic",
        "SubscriptionsDeleted": "0",
        "EffectiveDeliveryPolicy": "{\"http\":{\"defaultHealthyRetryPolicy\":{\"minDelayTarget\":20,\"maxDelayTarget\":20,\"numRetries\":3,\"numMaxDelayRetries\":0,\"numNoDelayRetries\":0,\"numMinDelayRetries\":0,\"backoffFunction\":\"linear\"},\"disableSubscriptionOverrides\":false}}",
        "Owner": "123456789012",
        "Policy": "{\"Version\":\"2008-10-17\",\"Id\":\"__default_policy_ID\",\"Statement\":[{\"Sid\":\"__default_statement_ID\",\"Effect\":\"Allow\",\"Principal\":{\"AWS\":\"*\"},\"Action\":[\"SNS:Subscribe\",\"SNS:ListSubscriptionsByTopic\",\"SNS:DeleteTopic\",\"SNS:GetTopicAttributes\",\"SNS:Publish\",\"SNS:RemovePermission\",\"SNS:AddPermission\",\"SNS:SetTopicAttributes\"],\"Resource\":\"arn:aws:sns:us-west-2:123456789012:my-topic\",\"Condition\":{\"StringEquals\":{\"AWS:SourceOwner\":\"0123456789012\"}}}]}",
        "TopicArn": "arn:aws:sns:us-west-2:123456789012:my-topic",
        "SubscriptionsPending": "0"


Attributes -> (map)

A map of the topic's attributes. Attributes in this map include the following:

  • DeliveryPolicy – The JSON serialization of the topic's delivery policy.
  • DisplayName – The human-readable name used in the From field for notifications to email and email-json endpoints.
  • Owner – The Amazon Web Services account ID of the topic's owner.
  • Policy – The JSON serialization of the topic's access control policy.
  • SubscriptionsConfirmed – The number of confirmed subscriptions for the topic.
  • SubscriptionsDeleted – The number of deleted subscriptions for the topic.
  • SubscriptionsPending – The number of subscriptions pending confirmation for the topic.
  • TopicArn – The topic's ARN.
  • EffectiveDeliveryPolicy – The JSON serialization of the effective delivery policy, taking system defaults into account.

The following attribute applies only to server-side-encryption :

  • KmsMasterKeyId - The ID of an Amazon Web Services managed customer master key (CMK) for Amazon SNS or a custom CMK. For more information, see Key Terms . For more examples, see KeyId in the Key Management Service API Reference .

The following attributes apply only to FIFO topics :

  • FifoTopic – When this is set to true , a FIFO topic is created.
  • ContentBasedDeduplication – Enables content-based deduplication for FIFO topics.
    • By default, ContentBasedDeduplication is set to false . If you create a FIFO topic and this attribute is false , you must specify a value for the MessageDeduplicationId parameter for the Publish action.
    • When you set ContentBasedDeduplication to true , Amazon SNS uses a SHA-256 hash to generate the MessageDeduplicationId using the body of the message (but not the attributes of the message). (Optional) To override the generated value, you can specify a value for the MessageDeduplicationId parameter for the Publish action.

key -> (string)

value -> (string)