Add support for resource-specific tags

main.tf

@@ -10,6 +10,9 @@ module "subnets" {
   availability_zone = each.key
   cidr_block        = each.value
 
+  route_table_tags = var.route_table_tags
+  subnet_tags      = var.subnet_tags
+
   default_tags = var.default_tags
 }
 
@@ -23,7 +26,7 @@ resource "aws_lb" "this" {
   internal = true
   subnets  = values(module.subnets)[*].this.id
 
-  tags = var.default_tags
+  tags = merge(var.default_tags, var.lb_tags)
 }
 
 # API Gateway VPC Link
@@ -32,5 +35,5 @@ resource "aws_api_gateway_vpc_link" "this" {
   name        = var.name
   target_arns = [aws_lb.this.arn]
 
-  tags = var.default_tags
+  tags = merge(var.default_tags, var.api_gateway_vpc_link_tags)
 }

subnet/main.tf

@@ -8,15 +8,15 @@ resource "aws_subnet" "this" {
 
   tags = merge({
     Name = "private - ${var.name} - ${var.availability_zone}"
-  }, var.default_tags)
+  }, var.default_tags, var.subnet_tags)
 }
 
 resource "aws_route_table" "this" {
   vpc_id = var.vpc.id
 
   tags = merge({
     Name = "private - ${var.name} - ${var.availability_zone}"
-  }, var.default_tags)
+  }, var.default_tags, var.route_table_tags)
 }
 
 resource "aws_route_table_association" "this" {

subnet/variables.tf

@@ -31,6 +31,24 @@ Name of the NLB.
 EOS
 }
 
+variable "route_table_tags" {
+  type    = map(string)
+  default = {}
+
+  description = <<EOS
+Map of tags assigned to the route table created by this module. Tags in this map will override tags in `var.default_tags`.
+EOS
+}
+
+variable "subnet_tags" {
+  type    = map(string)
+  default = {}
+
+  description = <<EOS
+Map of tags assigned to the subnet created by this module. Tags in this map will override tags in `var.default_tags`.
+EOS
+}
+
 variable "vpc" {
   type = object({
     id = string

variables.tf

@@ -1,3 +1,12 @@
+variable "api_gateway_vpc_link_tags" {
+  type    = map(string)
+  default = {}
+
+  description = <<EOS
+Map of tags assigned to the API Gateway VPC Link created by this module. Tags in this map will override tags in `var.default_tags`.
+EOS
+}
+
 variable "cidr_blocks" {
   type = map(string)
 
@@ -15,6 +24,15 @@ Map of tags assigned to all AWS resources created by this module.
 EOS
 }
 
+variable "lb_tags" {
+  type    = map(string)
+  default = {}
+
+  description = <<EOS
+Map of tags assigned to the NLB created by this module. Tags in this map will override tags in `var.default_tags`.
+EOS
+}
+
 variable "name" {
   type = string
 
@@ -23,6 +41,24 @@ Name of the NLB.
 EOS
 }
 
+variable "route_table_tags" {
+  type    = map(string)
+  default = {}
+
+  description = <<EOS
+Map of tags assigned to the route tables created by this module. Tags in this map will override tags in `var.default_tags`.
+EOS
+}
+
+variable "subnet_tags" {
+  type    = map(string)
+  default = {}
+
+  description = <<EOS
+Map of tags assigned to the subnets created by this module. Tags in this map will override tags in `var.default_tags`.
+EOS
+}
+
 variable "vpc" {
   type = object({
     id = string