variables.tf

variable "name" {
  description = "Name of load balancer. Also used in security group name."
  type        = string
}

variable "internal" {
  description = "Type of LoadBalancer"
  type        = bool
  default     = false
}

variable "public_subnets" {
  description = "List of AWS public subnet ids"
  type        = list(string)
}

variable "target_cidr_blocks" {
  description = "List of AWS private target subnet CIDR"
  type        = list(string)
}

variable "http_ports" {
  description = "List of plain http ports"
  default     = [80]
}

variable "https_ports" {
  description = "List of encrypted https ports"
  default     = [443]
}

variable "certificate_arn" {
  description = "Certificate for ALB that should contains "
  default     = ""
}

variable "access_log_bucket" {
  description = "Bucket to setore ALB access log"
  default     = ""
}

variable "access_log_prefix" {
  description = "Enable ALB access log"
  default     = ""
}

variable "idle_timeout" {
  description = "Connection idle timeout"
  default     = 60
}

data "aws_subnet" "public_1" {
  id = local.public_subnets[0]
}

variable "tags" {
  description = "Tags."
  type        = map(string)
  default     = {}
}

locals {
  name                = var.name
  internal            = var.internal
  alb_name            = replace(local.name, " ", "-")
  public_subnets      = var.public_subnets
  http_ports          = var.http_ports
  https_ports         = var.https_ports
  all_ports           = concat(local.https_ports, local.http_ports)
  vpc_id              = data.aws_subnet.public_1.vpc_id
  target_cidr_blocks  = var.target_cidr_blocks
  alb_certificate_arn = var.certificate_arn
  idle_timeout        = var.idle_timeout

  // magic to get map of port to listener arn pairs
  listener_http_ports  = aws_alb_listener.http.*.port
  listener_http_arn    = aws_alb_listener.http.*.arn
  listener_https_ports = aws_alb_listener.https.*.port
  listener_https_arn   = aws_alb_listener.https.*.arn
  listener_http_map    = zipmap(local.listener_http_ports, local.listener_http_arn)
  listener_https_map   = zipmap(local.listener_https_ports, local.listener_https_arn)
  listeners            = merge(local.listener_http_map, local.listener_https_map)

  access_logs_enable = var.access_log_bucket == "" ? false : true
  access_logs_bucket = var.access_log_bucket
  access_logs_prefix = var.access_log_prefix

  tags = merge({
    Name   = var.name,
    Module = "ALB"
  }, var.tags)
}