Using a Terraform Module Both Inside and Outside of Proton

lb.tf

resource "aws_alb" "main" {
  name     = local.name
  internal = local.internal
  subnets  = split(",", local.internal == true ? local.private_subnets : local.public_subnets)
}

locals-proton.tf

locals {

  # inside of proton
	# (from proton.service_instance.variables.tf at runtime)
  name            = var.service_instance.inputs.name
  vpc             = var.service_instance.inputs.vpc
  private_subnets = var.service_instance.inputs.private_subnets
  public_subnets  = var.service_instance.inputs.public_subnets
  internal        = var.service_instance.inputs.internal
}

locals.tf

locals {

  # outside of Proton
  # (from variables.tf)
  name            = var.name
  vpc             = var.vpc
  private_subnets = var.private_subnets
  public_subnets  = var.public_subnets
  internal        = var.internal
}