Support for RetryPolicy and DeadLetterConfig in aws_cloudwatch_event_target

[ghost]

This issue was originally opened by @heitorlessa as hashicorp/terraform#27568. It was migrated here as a result of the provider split. The original body of the issue is below.

---

Current Terraform Version

0.14.5 - Latest as of now

Use-cases

AWS launched support for setting a custom retry configuration on a per Event Target basis, including DLQ.

CloudFormation example: https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-events-rule.html#aws-resource-events-rule--examples

Attempted Solutions

Using aws_cloudformation_stack resource to make use of additional properties not available in Terraform.

resource "aws_cloudformation_stack" "stack_eventbridge_target_dlq" {
  name          = "stack_eventbridge_target_dlq"
  parameters = {
    DlqQueue = var.event_bridge_target_x_dlq_arn
  }
  template_body = <<STACK
{
  "Parameters" : {
    "DlqQueue" : {
      "Type" : "String",
      "Description" : "SQS DLQ Queue for sending events that couldn't reach their targets"
    }
  },
  "RuleWithRetryAndDLQ": {
      "Type": "AWS::Events::Rule",
      "Properties": {
          "Description": "Test Events Rule",
          "Name": "mynewabc",
          "EventPattern": {
            "source": [
                "aws.ec2"
            ]
          },
          "State": "ENABLED",
          "Targets": [
          {
              "Arn": "arn:aws:sqs:us-west-2:081035103721:demoSQS",
              "Id": "Id1234",
              "RetryPolicy": {
                  "MaximumRetryAttempts": 2,
                  "MaximumEventAgeInSeconds": 400
              },
              "DeadLetterConfig": {
                  "Arn": { "Ref": "DlqQueue" }
              }
          }
          ]
      }
  }
}
STACK
}

Proposal

Here's an example using the same properties names in Terraform syntax:

resource "aws_cloudwatch_event_target" "ecs_scheduled_task" {
  target_id = "run-scheduled-task-every-hour"
  arn       = aws_ecs_cluster.cluster_name.arn
  rule      = aws_cloudwatch_event_rule.every_hour.name
  role_arn  = aws_iam_role.ecs_events.arn

  # HERE
  retry_policy {
      maximum_retry_attempts = 2,
      maximum_age_in_seconds = 400
  }

  dead_letter_config {
      arn = aws_sqs_dlq_queue.arn
  }

References

[ghost]

This has been released in version 3.29.0 of the Terraform AWS provider. Please see the Terraform documentation on provider versioning or reach out if you need any assistance upgrading.

For further feature requests or bug reports with this functionality, please create a new GitHub issue following the template for triage. Thanks!

[ghost]

I'm going to lock this issue because it has been closed for 30 days ⏳. This helps our maintainers find and focus on the active issues.

If you feel this issue should be reopened, we encourage creating a new issue linking back to this one for added context. Thanks!