Module is starting to do what I want

Author: snemetz

main.tf

@@ -2,11 +2,33 @@
 # Terraform module to provide consistent naming
 #
 
+resource "null_resource" "pre1" {
+  triggers  = {
+    attributes    = "${lower(format("%s", join(var.delimiter, compact(var.attributes))))}"
+    environment   = "${lower(format("%s", var.environment))}"
+    name          = "${lower(format("%s", var.name))}"
+    organization  = "${lower(format("%s", var.organization))}"
+  }
+}
+resource "null_resource" "pre2" {
+  triggers  = {
+    name_env      = "${var.namespace-env ? join(var.delimiter, list(null_resource.pre1.triggers.environment, null_resource.pre1.triggers.name)) : null_resource.pre1.triggers.name}"
+  }
+}
+resource "null_resource" "pre3" {
+  triggers  = {
+    name_org      = "${var.namespace-org ? join(var.delimiter, list(null_resource.pre1.triggers.organization, null_resource.pre2.triggers.name_env)) : null_resource.pre2.triggers.name_env}"
+  }
+}
 resource "null_resource" "this" {
   count     = "${var.enabled ? 1 : 0}"
   triggers  = {
-    environment = "${lower(format("%s", var.environment))}"
-    name        = "${var.namespaced ? lower(format("%s-%s", var.environment, var.name)) : lower(format("%s", var.name))}"
+    attributes    = "${null_resource.pre1.triggers.attributes}"
+    environment   = "${null_resource.pre1.triggers.environment}"
+    organization  = "${null_resource.pre1.triggers.organization}"
+    name          = "${null_resource.pre3.triggers.name_org}"
+    name_20       = "${substr(replace(null_resource.pre3.triggers.name_org,"_","-"),0,19 <= length(null_resource.pre3.triggers.name_org) ? 19 : length(null_resource.pre3.triggers.name_org))}"
+    name_32       = "${substr(replace(null_resource.pre3.triggers.name_org,"_","-"),0,31 <= length(null_resource.pre3.triggers.name_org) ? 31 : length(null_resource.pre3.triggers.name_org))}"
     /* FIX: wants only strings
     tags        = "${ merge(
       var.tags,

outputs.tf

@@ -1,12 +1,29 @@
 
+output "attributes" {
+  description = "Attribute string lowercase"
+  value       = "${null_resource.this.triggers.attributes}"
+}
 output "environment" {
-  description = "Environment name"
+  description = "Environment name lowercase"
   value       = "${null_resource.this.triggers.environment}"
 }
 output "name" {
   description = "Name"
   value       = "${null_resource.this.triggers.name}"
 }
+output "name_20" {
+  description = "Name truncated to 20 characters"
+  value       = "${null_resource.this.triggers.name_20}"
+}
+output "name_32" {
+  description = "Name truncated to 32 characters"
+  value       = "${null_resource.this.triggers.name_32}"
+}
+output "organization" {
+  description = "Organization name lowercase"
+  value       = "${null_resource.this.triggers.organization}"
+}
+
 /*
 output "tags" {
   description = "Tags"

test/main.tf

@@ -1,6 +1,42 @@
 
 module "labels" {
-  source      = "../"
-  name        = "CapMe"
-  environment = "Dev"
+  source        = "../"
+  name          = "CapMe"
+  environment   = "Dev"
+  organization  = "CorpXyZ"
+}
+
+/*
+module "labels-disabled" {
+  source        = "../"
+  name          = "CapMe"
+  environment   = "Dev"
+  organization  = "CorpXyZ"
+  enabled       = false
+}
+*/
+
+module "labels-env" {
+  source        = "../"
+  name          = "CapMe"
+  environment   = "Dev"
+  organization  = "CorpXyZ"
+  namespace-env = true
+  namespace-org = false
+}
+module "labels-org" {
+  source        = "../"
+  name          = "CapMe"
+  environment   = "Dev"
+  organization  = "CorpXyZ"
+  namespace-env = false
+  namespace-org = true
+}
+module "labels-org-env" {
+  source        = "../"
+  name          = "Application"
+  environment   = "Environment"
+  organization  = "Organization"
+  namespace-env = true
+  namespace-org = true
 }

test/outputs.tf

@@ -1,12 +1,29 @@
 
+output "attributes" {
+  description = "Attribute string lowercase"
+  value       = "${module.labels.attributes}"
+}
 output "environment" {
-  description = "Environment name"
+  description = "Environment name lowercase"
   value       = "${module.labels.environment}"
 }
 output "name" {
   description = "Name"
   value       = "${module.labels.name}"
 }
+output "name_20" {
+  description = "Name truncated to 20 characters"
+  value       = "${module.labels.name_20}"
+}
+output "name_32" {
+  description = "Name truncated to 32 characters"
+  value       = "${module.labels.name_32}"
+}
+output "organization" {
+  description = "Organization name lowercase"
+  value       = "${module.labels.organization}"
+}
+
 /*
 output "tags" {
   description = "Tags"

variables.tf

@@ -1,23 +1,51 @@
 // Standard Variables
-
-variable "name" {
-  description = "Name for the EFS Filesystem"
+variable "attributes" {
+  description = "Suffix name with additional attributes (policy, role, etc.)"
+  type        = "list"
+  default     = []
+}
+variable "delimiter" {
+  description = "Delimiter to be used between `name`, `namespaces`, `attributes`, etc."
+  default     = "-"
 }
 variable "enabled" {
-  description = "Enable use of module"
+  description = "Enable use of module. Set to false to not create resources"
   default     = true
 }
 variable "environment" {
   description = "Environment (ex: dev, qa, stage, prod)"
 }
-variable "namespaced" {
-  description = "Namespace all resources (prefixed with the environment)?"
+variable "name" {
+  description = "Name for the EFS Filesystem"
+}
+variable "namespace-env" {
+  description = "Prefix name with the environment"
   default     = true
 }
+variable "namespace-org" {
+  description = "Prefix name with the organization. If both env and org namespaces are used, format will be <org>-<env>-<name>"
+  default     = false
+}
+variable "organization" {
+  description = "Organization name"
+  default     = ""
+}
 variable "tags" {
   description = "A map of tags to add to all resources"
   type        = "map"
   default     = {}
 }
 
-// Module specific Variables
+// Internal Variables
+variable "name_lower" {
+  description = "Internal"
+  default     = ""
+}
+variable "name_env" {
+  description = "Internal"
+  default     = ""
+}
+variable "name_org" {
+  description = "Internal"
+  default     = ""
+}