# Filtering your DevOps Guru notifications
<a name="update-notifications-filter"></a>

You can filter your DevOps Guru notifications by [Updating Amazon SNS notification configurations](update-notifications.md#update-notification-configurations) or by using a Amazon SNS subscription filter policy.

**Topics**
+ [Filtering notifications with a Amazon SNS subscription filter policy](#use-subscription-filter-policy)
+ [Example filtered Amazon SNS notification for Amazon DevOps Guru](#sample-filtered-notification)

## Filtering notifications with a Amazon SNS subscription filter policy
<a name="use-subscription-filter-policy"></a>

You can create an Amazon Simple Notification Service (Amazon SNS) subscription filter policy to reduce the number of notifications you receive from Amazon DevOps Guru.

Use a filter policy to specify the types of notifications you receive. You can filter your Amazon SNS messages using the following keywords.
+ `NEW_INSIGHT` — Receive a notification when a new insight is created.
+ `CLOSED_INSIGHT` — Receive a notification when an existing insight is closed.
+ `NEW_RECOMMENDATION` — Receive a notification when a new recommendation is created from an insight.
+ `NEW_ASSOCIATION` — Receive a notification when a new anomaly is detected from an insight.
+ `CLOSED_ASSOCIATION` — Receive a notification when an existing anomaly is closed.
+ `SEVERITY_UPGRADED` — Receive a notification when the severity of an insight is upgraded

For information about how to create an Amazon SNS subscription filter policy, see [Amazon SNS subscription filter policies](https://docs.aws.amazon.com/sns/latest/dg/sns-subscription-filter-policies.html) in the *Amazon Simple Notification Service Developer Guide*. In your filter policy, you specify one of the keywords with the policy's `MessageType`. For example, the following would appear in a filter that specifies the Amazon SNS topic only deliver notifications when a new anomaly is detected from an insight.

```
{ 
  "MessageType":["NEW_ ASSOCIATION"] 
}
```

## Example filtered Amazon SNS notification for Amazon DevOps Guru
<a name="sample-filtered-notification"></a>

The following is an example of an Amazon Simple Notification Service (Amazon SNS) notification from an Amazon SNS topic with a filter policy. Its `MessageType` is set to `NEW_ASSOCIATION`, so it sends notifications only when a new anomaly is detected from an insight.

```
{
      "accountId": "123456789012",
      "region": "us-east-1",
      "messageType": "NEW_ASSOCIATION",
      "insightId": "ADyf4FvaVNDzu9MA2-IgFDkAAAAAAAAAEGpJd5sjicgauU2wmAlnWUyyI2hiO5it",
      "insightName": "Repeated Insight: Anomalous increase in Lambda ApigwLambdaDdbStack-22-Function duration due to increased number of invocations",
      "insightUrl": "https://us-east-1.console.aws.amazon.com/devops-guru/insight/reactive/ADyf4FvaVNDzu9MA2-IgFDkAAAAAAAAAEGpJd5sjicgauU2wmAlnWUyyI2hiO5it",
      "insightType": "REACTIVE",
      "insightDescription": "At March 29, 2023 22:02 GMT, Lambda function ApigwLambdaDdbStack-22-Function had\n an increased duration anomaly possibly caused by the Lambda function invocation increase. DevOps Guru has detected this is a repeated insight. DevOps Guru treats repeated insights as 'Low Severity'.",
      "startTime": 1628767500000,
      "startTimeISO": "2023-03-29T22:00:00Z",
      "anomalies": [
        {
          "id": "AG2n8ljW74BoI1CHu-m_oAgAAAF7Ohu24N4Yro69ZSdUtn_alzPH7VTpaL30JXiF",
          "startTime": 1628767500000,
          "startTimeISO": "2023-03-29T22:00:00Z",
          "openTime": 1680127740000,
          "openTimeISO": "2023-03-29T22:09:00Z",
          "sourceDetails": [
            {
              "dataSource": "CW_METRICS",
              "dataIdentifiers": {
                "namespace": "AWS/SQS",
                "name": "ApproximateAgeOfOldestMessage",
                "stat": "Maximum",
                "unit": "None",
                "period": "60",
                "dimensions": "{\"QueueName\":\"FindingNotificationsDLQ\"}"
              }
            }
          ],
          "associatedResourceArns":[
          	"arn:aws:sns:us-east-1:123456789012:DevOpsGuru-insights-sns"
          ]
        }
      ],
      "resourceCollection":{
      "cloudFormation":{
         "stackNames":[
            "CapstoneNotificationPublisherEcsApplicationInfrastructure"
          ]
        }
      }
}
```