[Enhancement]: ECS Service deployment alarms

[mkielar]

Description

Implement the possibility to configure Deployment Alarms in ECS Service.

AWS just released a feature in ECS allowing to configure custom CloudWatch Alarms, that the ECS Service Deployment will observe, and roll back the deployment if any of the alarm goes into an ALARM state.

Affected Resource(s) and/or Data Source(s)

• aws_ecs_service

Potential Terraform Configuration

resource "aws_ecs_service" "example" {
  name    = "example"
  cluster = aws_ecs_cluster.example.id

  deployment_controller {
    # Note! ECS is currently the only supported controller for `deployment_alarms`. 
    # Pretty sure AWS will validate it, though.
    type = "ECS" 
  }

  # Potential new configuration
  deployment_alarms {
    enabled     = true
    rollback    = true
    alarm_names = [
      "my_custom_alarm_1",
      "my_custom_alarm_2",
    ] 
  }
}

References

1. Announcement:
   https://aws.amazon.com/about-aws/whats-new/2022/12/amazon-ecs-cloudwatch-alarms-safety-deployments/
2. API:
   https://docs.aws.amazon.com/AmazonECS/latest/APIReference/API_DeploymentAlarms.html

Would you like to implement a fix?

No

[github-actions]

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[bschaatsbergen]

Hi @mkielar, thanks for raising this issue. I'll pick this up 👍

[github-actions]

This functionality has been released in v4.49.0 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. Thank you!

[github-actions]

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If you have found a problem that seems similar to this, please open a new issue and complete the issue template so we can capture all the details necessary to investigate further.