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79 lines
2.6 KiB
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79 lines
2.6 KiB
Text
---
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title: About the aws_sns_topic Resource
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---
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# aws\_sns\_topic
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Use the `aws_sns_topic` Chef InSpec audit resource to test properties of a single AWS Simple Notification Service Topic. SNS topics are channels for related events. AWS resources place events in the SNS topic, while other AWS resources _subscribe_ to receive notifications when new events have appeared.
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<br>
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## Availability
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### Installation
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This resource is distributed along with Chef InSpec itself. You can use it automatically.
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### Version
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This resource first became available in v2.0.16 of InSpec.
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## Syntax
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# Ensure that a topic exists and has at least one subscription
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describe aws_sns_topic('arn:aws:sns:*::my-topic-name') do
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it { should exist }
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its('confirmed_subscription_count') { should_not be_zero }
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end
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# You may also use has syntax to pass the ARN
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describe aws_sns_topic(arn: 'arn:aws:sns:*::my-topic-name') do
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it { should exist }
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end
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## Resource Parameters
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### ARN
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This resource expects a single parameter that uniquely identifies the SNS Topic, an ARN. Amazon Resource Names for SNS topics have the format `arn:aws:sns:region:account-id:topicname`. AWS requires a fully-specified ARN for looking up an SNS topic. The account ID and region are required. Wildcards are not permitted.
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See also the [AWS documentation on ARNs](http://docs.aws.amazon.com/general/latest/gr/aws-arns-and-namespaces.html).
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<br>
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## Properties
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### confirmed\_subscription\_count
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An integer indicating the number of currently active subscriptions.
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# Make sure someone is listening
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describe aws_sns_topic('arn:aws:sns:*::my-topic-name') do
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its('confirmed_subscription_count') { should_not be_zero}
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end
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<br>
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## Matchers
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This Chef InSpec audit resource has the following special matchers. For a full list of available matchers, please visit our [matchers page](https://www.inspec.io/docs/reference/matchers/).
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### exist
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Indicates that the ARN provided was found. Use `should_not` to test for SNS topics that should not exist.
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# Expect good news
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describe aws_sns_topic('arn:aws:sns:*::good-news') do
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it { should exist }
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end
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# No bad news allowed
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describe aws_sns_topic('arn:aws:sns:*::bad-news') do
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it { should_not exist }
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end
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## AWS Permissions
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Your [Principal](https://docs.aws.amazon.com/IAM/latest/UserGuide/intro-structure.html#intro-structure-principal) will need the `sns:GetTopicAttributes` action with Effect set to Allow.
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You can find detailed documentation at [Actions, Resources, and Condition Keys for Amazon SNS](https://docs.aws.amazon.com/IAM/latest/UserGuide/list_amazonsns.html).
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