feat: Add more specific tags (#151)

README.md

@@ -245,6 +245,7 @@ module "lb" {
 | idle\_timeout | The time in seconds that the connection is allowed to be idle. | `number` | `60` | no |
 | internal | Boolean determining if the load balancer is internal or externally facing. | `bool` | `false` | no |
 | ip\_address\_type | The type of IP addresses used by the subnets for your load balancer. The possible values are ipv4 and dualstack. | `string` | `"ipv4"` | no |
+| lb\_tags | A map of tags to add to load balancer | `map(string)` | `{}` | no |
 | listener\_ssl\_policy\_default | The security policy if using HTTPS externally on the load balancer. [See](https://docs.aws.amazon.com/elasticloadbalancing/latest/classic/elb-security-policy-table.html). | `string` | `"ELBSecurityPolicy-2016-08"` | no |
 | load\_balancer\_create\_timeout | Timeout value when creating the ALB. | `string` | `"10m"` | no |
 | load\_balancer\_delete\_timeout | Timeout value when deleting the ALB. | `string` | `"10m"` | no |
@@ -256,7 +257,8 @@ module "lb" {
 | subnet\_mapping | A list of subnet mapping blocks describing subnets to attach to network load balancer | `list(map(string))` | `[]` | no |
 | subnets | A list of subnets to associate with the load balancer. e.g. ['subnet-1a2b3c4d','subnet-1a2b3c4e','subnet-1a2b3c4f'] | `list(string)` | `null` | no |
 | tags | A map of tags to add to all resources | `map(string)` | `{}` | no |
-| target\_groups | A list of maps containing key/value pairs that define the target groups to be created. Order of these maps is important and the index of these are to be referenced in listener definitions. Required key/values: name, backend\_protocol, backend\_port. Optional key/values are in the target\_groups\_defaults variable. | `any` | `[]` | no |
+| target\_group\_tags | A map of tags to add to all target groups | `map(string)` | `{}` | no |
+| target\_groups | A list of maps containing key/value pairs that define the target groups to be created. Order of these maps is important and the index of these are to be referenced in listener definitions. Required key/values: name, backend\_protocol, backend\_port | `any` | `[]` | no |
 | vpc\_id | VPC id where the load balancer and other resources will be deployed. | `string` | `null` | no |
 
 ## Outputs

examples/complete-alb/main.tf

@@ -193,6 +193,9 @@ module "alb" {
         protocol            = "HTTP"
         matcher             = "200-399"
       }
+      tags = {
+        InstanceTargetGroupTag = "baz"
+      }
     },
     {
       name_prefix                        = "l1-"
@@ -204,4 +207,12 @@ module "alb" {
   tags = {
     Project = "Unknown"
   }
+
+  lb_tags = {
+    MyLoadBalancer = "foo"
+  }
+
+  target_group_tags = {
+    MyGlobalTargetGroupTag = "bar"
+  }
 }

examples/complete-nlb/main.tf

@@ -108,6 +108,9 @@ module "nlb" {
       backend_protocol = "TCP_UDP"
       backend_port     = 81
       target_type      = "instance"
+      tags = {
+        tcp_udp = true
+      }
     },
     {
       name_prefix      = "u1-"

main.tf

@@ -38,6 +38,7 @@ resource "aws_lb" "this" {
 
   tags = merge(
     var.tags,
+    var.lb_tags,
     {
       Name = var.name != null ? var.name : var.name_prefix
     },
@@ -94,6 +95,8 @@ resource "aws_lb_target_group" "main" {
 
   tags = merge(
     var.tags,
+    var.target_group_tags,
+    lookup(var.target_groups[count.index], "tags", {}),
     {
       "Name" = lookup(var.target_groups[count.index], "name", lookup(var.target_groups[count.index], "name_prefix", ""))
     },

variables.tf

@@ -130,14 +130,26 @@ variable "tags" {
   default     = {}
 }
 
+variable "lb_tags" {
+  description = "A map of tags to add to load balancer"
+  type        = map(string)
+  default     = {}
+}
+
+variable "target_group_tags" {
+  description = "A map of tags to add to all target groups"
+  type        = map(string)
+  default     = {}
+}
+
 variable "security_groups" {
   description = "The security groups to attach to the load balancer. e.g. [\"sg-edcd9784\",\"sg-edcd9785\"]"
   type        = list(string)
   default     = []
 }
 
 variable "target_groups" {
-  description = "A list of maps containing key/value pairs that define the target groups to be created. Order of these maps is important and the index of these are to be referenced in listener definitions. Required key/values: name, backend_protocol, backend_port. Optional key/values are in the target_groups_defaults variable."
+  description = "A list of maps containing key/value pairs that define the target groups to be created. Order of these maps is important and the index of these are to be referenced in listener definitions. Required key/values: name, backend_protocol, backend_port"
   type        = any
   default     = []
 }