cloudwatch_metric_alarm_out.tf

resource "aws_cloudwatch_metric_alarm" "sqs_scale_out" {
  alarm_name = "SQS-ScaleOut-${var.service_name}"

  comparison_operator = "GreaterThanOrEqualToThreshold"
  evaluation_periods = "1"
  metric_name = "ApproximateNumberOfMessagesVisible"
  namespace = "AWS/SQS"
  period = "60"
  threshold = "1"
  statistic = "Sum"
  alarm_description = "SQS-ScaleOut-${var.service_name}"
  insufficient_data_actions = []
  alarm_actions = [
    aws_appautoscaling_policy.scale_up_fargate.arn]

  dimensions = {
    QueueName = var.queue_name
  }
}