add subnets

subnets/availabilty_zones.tf

@@ -0,0 +1 @@
+../common/availabilty_zones.tf

subnets/data.tf

@@ -0,0 +1 @@
+../common/data.tf

subnets/defaults.tf

@@ -0,0 +1 @@
+../common/defaults.tf

subnets/main.tf

@@ -0,0 +1,109 @@
+/*
+* # About aws-vpc-setup :: subnets
+* 
+* This submodule creates public and private subnets.
+* 
+* # Usage
+* 
+* ```hcl
+* module "subnets" {
+*   source               = "git@github.e.it.census.gov:terraform-modules/aws-vpc-setup.git//subnets"
+*   availability_zones   = var.availability_zones
+*   public_subnets       = [ { base_cidr = "10.188.16.0/24", label = "public", bits = 2, private = false } ]
+*   private_subnets      = [
+*     { base_cidr = "10.188.18.0/23", label = "private-lb", bits = 2, private = true },
+*     { base_cidr = "10.188.20.0/23", label = "db", bits = 2, private = true },
+*     { base_cidr = "10.188.22.0/23", label = "apps", bits = 2, private = true } ]
+*
+*   vpc_name             = var.vpc_name
+*   vpc_cidr_block       = var.vpc_cidr_block
+*   vpc_index            = var.vpc_index
+*   vpc_short_name       = var.vpc_short_name
+*   vpc_full_name        = var.vpc_full_name
+*   vpc_environment      = var.vpc_environment
+* 
+*   tags = {}
+* }
+*/
+
+locals {
+  account_id          = var.account_id != "" ? var.account_id : data.aws_caller_identity.current.account_id
+  account_environment = data.aws_arn.current.partition == "aws-us-gov" ? "gov" : "ew"
+
+  base_tags = {
+    "boc:tf_module_version" = local._module_version
+    "boc:created_by"        = "terraform"
+  }
+
+  availability_zones = length(var.availability_zones) != 0 ? var.availability_zones : data.aws_availability_zones.zones.names
+  az_count           = length(local.availability_zones)
+  az_count_list      = range(local.az_count)
+  az_list            = toset(local.availability_zones)
+  empty              = toset([])
+}
+
+#--- 
+# public subnets
+#---
+locals {
+  public_subnets = { for v in var.public_subnets : v.label =>
+    {
+      base_cidr          = v.base_cidr
+      label              = v.label
+      bits               = v.bits
+      private            = v.private
+      subnets            = [for i in local.az_count_list : cidrsubnet(v.base_cidr, v.bits, i)]
+      labels             = [for az in local.availability_zones : format("%s-%s", v.label, az)]
+      availability_zones = local.availability_zones
+    }
+  }
+  public_map = flatten([for k, v in local.public_subnets :
+  [for i in local.az_count_list : tomap({ "subnet" = v.subnets[i], "label" = v.labels[i], "availability_zone" = v.availability_zones[i] })]])
+}
+
+
+resource "aws_subnet" "public" {
+  for_each          = { for subnet in local.public_map : subnet.label => subnet }
+  vpc_id            = var.vpc_id
+  cidr_block        = each.value.subnet
+  availability_zone = each.value.availability_zone
+
+  tags = merge(
+    local.base_tags,
+    var.tags,
+    map("Name", format("%v%v-%v", local._prefixes["subnet"], var.vpc_full_name, each.value.label))
+  )
+}
+
+
+#--- 
+# private subnets
+#---
+locals {
+  private_subnets = { for v in var.private_subnets : v.label =>
+    {
+      base_cidr          = v.base_cidr
+      label              = v.label
+      bits               = v.bits
+      private            = v.private
+      subnets            = [for i in local.az_count_list : cidrsubnet(v.base_cidr, v.bits, i)]
+      labels             = [for az in local.availability_zones : format("%s-%s", v.label, az)]
+      availability_zones = local.availability_zones
+    }
+  }
+  private_map = flatten([for k, v in local.private_subnets :
+  [for i in local.az_count_list : tomap({ "subnet" = v.subnets[i], "label" = v.labels[i], "availability_zone" = v.availability_zones[i] })]])
+}
+
+resource "aws_subnet" "private" {
+  for_each          = { for subnet in local.private_map : subnet.label => subnet }
+  vpc_id            = var.vpc_id
+  cidr_block        = each.value.subnet
+  availability_zone = each.value.availability_zone
+
+  tags = merge(
+    local.base_tags,
+    var.tags,
+    map("Name", format("%v%v-%v", local._prefixes["subnet"], var.vpc_full_name, each.value.label))
+  )
+}

subnets/prefixes.tf

@@ -0,0 +1 @@
+../common/prefixes.tf

subnets/variables.common.tf

@@ -0,0 +1 @@
+../common/variables.common.tf

subnets/variables.common.vpc.tf

@@ -0,0 +1 @@
+../common/variables.common.vpc.tf

subnets/variables.subnets.tf

@@ -0,0 +1,33 @@
+variable "availability_zones" {
+  description = "AWS Availability Zones to use (by default will use all available)"
+  type        = list(string)
+  default     = []
+}
+
+variable "public_subnets" {
+  description = "List of objects with public subnet information to be created"
+  type = list(object({
+    base_cidr = string
+    label     = string
+    bits      = number
+    private   = bool
+    #      subnets     = list(string)
+    #      labels      = list(string)
+    #      availability_zones = list(string)
+  }))
+  default = []
+}
+
+variable "private_subnets" {
+  description = "List of objects with private subnet information to be created"
+  type = list(object({
+    base_cidr = string
+    label     = string
+    bits      = number
+    private   = bool
+    #      subnets     = list(string)
+    #      labels      = list(string)
+    #      availability_zones = list(string)
+  }))
+  default = []
+}

subnets/version.tf

@@ -0,0 +1 @@
+../common/version.tf

vpc/locals.tf

@@ -1,31 +1,3 @@
 locals {
-  az_list       = data.aws_availability_zones.zones.names
-  az_count      = length(local.az_list)
-  az_count_list = range(local.az_count)
-  region        = data.aws_region.current.name
-}
-
-data "aws_availability_zones" "zones" {
-  state = "available"
-}
-
-data "aws_availability_zone" "zone" {
-  count = length(data.aws_availability_zones.zones.names)
-  state = "available"
-  name  = data.aws_availability_zones.zones.names[count.index]
-}
-
-output "availability_zone_names" {
-  description = "VPC Availability zone name list (3)"
-  value       = data.aws_availability_zones.zones.names
-}
-
-output "availability_zone_ids" {
-  description = "VPC Availability zone id list (3)"
-  value       = data.aws_availability_zones.zones.zone_ids
-}
-
-output "availability_zone_suffixes" {
-  description = "VPC Availability zone suffix list (3)"
-  value       = data.aws_availability_zone.zone[*].name_suffix
+  region = data.aws_region.current.name
 }