variables.tf

variable "service_name" {
  type        = string
  description = "The name of the service"
}

variable "cluster_role" {
  type        = string
  default     = "app"
  description = "Primary role/function of the cluster"
}

variable "environment" {
  type        = string
  description = "The created resources will belong to this infrastructure environment"
}

variable "application" {
  type        = string
  description = "Application type that the ASG's instances will serve"
}

variable "product_domain" {
  type        = string
  description = "Abbreviation of the product domain this ASG and its instances belongs to"
}

variable "description" {
  type        = string
  description = "Free form description of this ASG and its instances"
}

variable "asg_vpc_zone_identifier" {
  type        = list(string)
  description = "The created ASG will spawn instances to these subnet IDs"
}

variable "asg_lb_target_group_arns" {
  type        = list(string)
  default     = []
  description = "The created ASG will be attached to this target group"
}

variable "asg_clb_names" {
  type        = list(string)
  default     = []
  description = "A list of classic load balancer names to add to the autoscaling group"
}

variable "asg_min_capacity" {
  type        = string
  default     = "0"
  description = "The created ASG will have this number of instances at minimum"
}

variable "asg_max_capacity" {
  type        = string
  default     = "0"
  description = "The created ASG will have this number of instances at maximum"
}

variable "asg_desired_capacity" {
  type        = string
  default     = "2"
  description = "The created ASG will have this number of instances at desired"
}

variable "asg_health_check_type" {
  type        = string
  default     = "ELB"
  description = "Controls how ASG health checking is done"
}

variable "asg_health_check_grace_period" {
  type        = string
  default     = "300"
  description = "Time, in seconds, to wait for new instances before checking their health"
}

variable "asg_default_cooldown" {
  type        = string
  default     = "300"
  description = "Time, in seconds, the minimum interval of two scaling activities"
}

variable "asg_placement_group" {
  type        = string
  default     = ""
  description = "The placement group for the spawned instances"
}

variable "asg_metrics_granularity" {
  type        = string
  default     = "1Minute"
  description = "The granularity to associate with the metrics to collect"
}

variable "asg_enabled_metrics" {
  type = list(string)

  default = [
    "GroupMinSize",
    "GroupMaxSize",
    "GroupDesiredCapacity",
    "GroupInServiceInstances",
    "GroupPendingInstances",
    "GroupStandbyInstances",
    "GroupTerminatingInstances",
    "GroupTotalInstances",
  ]

  description = "The list of ASG metrics to collect"
}

variable "asg_service_linked_role_arn" {
  type        = string
  default     = ""
  description = "The ARN of the service-linked role that the ASG will use to call other AWS services"
}

variable "asg_termination_policies" {
  type = list(string)

  default = [
    "Default",
  ]

  description = "Specify policies that the auto scaling group should use to terminate its instances"
}

variable "asg_tags" {
  type        = list(map(string))
  default     = []
  description = "The created ASG will have these tags applied over the default ones (see main.tf)"
}

variable "asg_wait_for_capacity_timeout" {
  type        = string
  description = "A maximum duration that Terraform should wait for ASG instances to be healthy before timing out"
}

variable "asg_wait_for_elb_capacity" {
  type        = string
  default     = ""
  description = "Terraform will wait for exactly this number of healthy instances in all attached load balancers on both create and update operations. If left to default, the value is set to asg_min_capacity"
}

variable "launch_template_overrides" {
  type = list(map(string))

  default = [
    {
      instance_type = "c4.large"
    },
    {
      instance_type = "t3.medium"
    },
  ]

  description = <<EOT
  List of nested arguments provides the ability to specify multiple instance types. See https://www.terraform.io/docs/providers/aws/r/autoscaling_group.html#override
  When using plain launch template, the first element's instance_type will be used as the launch template instance type.
  EOT
}

variable "security_groups" {
  type        = list(string)
  description = "The spawned instances will have these security groups"
}

variable "instance_profile_name" {
  type        = string
  description = "The spawned instances will have this IAM profile"
}

variable "key_name" {
  type        = string
  default     = ""
  description = "The spawned instances will have this SSH key name"
}

variable "cpu_credits" {
  type        = string
  default     = "unlimited"
  description = "The credit option for CPU usage, can be either 'standard' or 'unlimited'"
}

variable "image_filters" {
  type = list(object({
    name   = string,
    values = list(string)
    })
  )
  description = "The AMI search filters. The most recent AMI that pass this filter will be deployed to the ASG. See https://docs.aws.amazon.com/cli/latest/reference/ec2/describe-images.html"
}

variable "image_owners" {
  type        = list(string)
  description = "List of AMI owners to limit search. This becomes required starting terraform-provider-aws v2 (https://www.terraform.io/docs/providers/aws/guides/version-2-upgrade.html#owners-argument-now-required)"
}

variable "monitoring" {
  type        = string
  default     = "true"
  description = "The spawned instances will have enhanced monitoring if enabled"
}

variable "ebs_optimized" {
  type        = string
  default     = "false"
  description = "The spawned instances will have EBS optimization if enabled"
}

variable "user_data" {
  type        = string
  default     = " "
  description = "The spawned instances will have this user data. Use the rendered value of a terraform's `template_cloudinit_config` data" // https://www.terraform.io/docs/providers/template/d/cloudinit_config.html#rendered
}

variable "volume_size" {
  description = "The size of the volume in gigabytes"
  type        = string
  default     = "8"
}

variable "volume_type" {
  description = "The type of volume. Can be standard, gp2, or io1"
  type        = string
  default     = "gp2"
}

variable "delete_on_termination" {
  description = "Whether the volume should be destroyed on instance termination"
  default     = "true"
}

variable "ebs_encryption" {
  description = "Whether the volume will be encrypted or not"
  default     = "false"
}

variable "associate_public_ip" {
  description = "Whether to associate public IP to the instance"
  default     = "false"
}

variable "use_mixed_instances_policy" {
  type        = bool
  description = "Whether to use ASG mixed instances policy or the plain launch template"
  default     = true
}

variable "mixed_instances_distribution" {
  type        = map(string)
  description = "Specify the distribution of on-demand instances and spot instances. See https://docs.aws.amazon.com/autoscaling/ec2/APIReference/API_InstancesDistribution.html"

  default = {
    on_demand_allocation_strategy            = "prioritized"
    on_demand_base_capacity                  = "0"
    on_demand_percentage_above_base_capacity = "100"
    spot_allocation_strategy                 = "lowest-price"
    spot_instance_pools                      = "2"
    spot_max_price                           = ""
  }
}

variable "disable_api_termination" {
  type        = bool
  description = "whether to protect your instance from accidently being terminated from console or api"
  default     = false
}

variable "delete_network_interface_on_termination" {
  description = "Whether the network interface will be deleted on termination"
  default     = "true"
}