subnet.tf

################################################################################
# Public subnet
################################################################################

resource "aws_subnet" "public" {
  count = var.create_vpc && length(var.public_subnets) > 0 && (false == var.one_nat_gateway_per_az || length(var.public_subnets) >= length(var.azs)) ? length(var.public_subnets) : 0

  vpc_id                          = local.vpc_id
  cidr_block                      = element(concat(var.public_subnets, [""]), count.index)
  availability_zone               = length(regexall("^[a-z]{2}-", element(var.azs, count.index))) > 0 ? element(var.azs, count.index) : null
  availability_zone_id            = length(regexall("^[a-z]{2}-", element(var.azs, count.index))) == 0 ? element(var.azs, count.index) : null
  map_public_ip_on_launch         = var.map_public_ip_on_launch

  tags = module.tags.commontags
}

################################################################################
# Private subnet
################################################################################

resource "aws_subnet" "private" {
  count = var.create_vpc && length(var.private_subnets) > 0 ? length(var.private_subnets) : 0

  vpc_id                          = local.vpc_id
  cidr_block                      = var.private_subnets[count.index]
  availability_zone               = length(regexall("^[a-z]{2}-", element(var.azs, count.index))) > 0 ? element(var.azs, count.index) : null
  availability_zone_id            = length(regexall("^[a-z]{2}-", element(var.azs, count.index))) == 0 ? element(var.azs, count.index) : null

  tags = module.tags.commontags
}