data external alb-targetgroups {
  program = ["bash", "../../modules/ManagementGovernance/Monitoring.ALB/list-alb-targetgroups.sh"]
  query = {
    lb = var.load-balancer
  }
}

resource aws_cloudwatch_metric_alarm alb-HealthyHostCount {
  for_each = toset(split(" ", data.external.alb-targetgroups.result.result))
  alarm_name = "ALBTG:HealthyHostCount:${split("/", each.value)[1]}/${split("/", each.value)[2]}"
  comparison_operator = "LessThanThreshold"
  evaluation_periods = "1"
  metric_name = "HealthyHostCount"
  period = "300"
  statistic = "Minimum"
  threshold = var.threshold-HealthHostCountMin
  alarm_description = "ALBTG:HealthyHostCount"
  namespace = "AWS/ApplicationELB"
  insufficient_data_actions = []
  actions_enabled = "true"
  alarm_actions = [var.alarm-actions-emergency]
  ok_actions = [var.alarm-actions-emergency]
  dimensions = {
    TargetGroup = "targetgroup/${split("/", each.value)[1]}/${split("/", each.value)[2]}"
    LoadBalancer = "app/${split("/",var.load-balancer)[2]}/${split("/",var.load-balancer)[3]}"
  }
  tags = var.default-tags
  lifecycle {
    ignore_changes = [tags]
  }
}