To allow special characters in module id (#48)

* To allow special characters in module id

* Adjusting spacing

* Adjustments as per review comments

* More meaningful variable name

Author: r-divakaran-hrs

README.md

@@ -396,7 +396,6 @@ Available targets:
   lint                                Lint terraform code
 
 ```
-
 ## Inputs
 
 | Name | Description | Type | Default | Required |
@@ -410,6 +409,7 @@ Available targets:
 | label_order | The naming order of the id output and Name tag | list | `<list>` | no |
 | name | Solution name, e.g. 'app' or 'jenkins' | string | `` | no |
 | namespace | Namespace, which could be your organization name or abbreviation, e.g. 'eg' or 'cp' | string | `` | no |
+| regex_replace_chars | By default only letters and digits are allowed in `namespace`, `environment`, `stage` and `name`. All other chars are removed | string | `[^a-zA-Z0-9]` | no |
 | stage | Stage, e.g. 'prod', 'staging', 'dev', OR 'source', 'build', 'test', 'deploy', 'release' | string | `` | no |
 | tags | Additional tags (e.g. `map('BusinessUnit','XYZ')` | map | `<map>` | no |
 
@@ -509,7 +509,7 @@ In general, PRs are welcome. We follow the typical "fork-and-pull" Git workflow.
 
 ## Copyright
 
-Copyright © 2017-2018 [Cloud Posse, LLC](https://cpco.io/copyright)
+Copyright © 2017-2019 [Cloud Posse, LLC](https://cpco.io/copyright)
 
 
 

docs/terraform.md

@@ -1,4 +1,3 @@
-
 ## Inputs
 
 | Name | Description | Type | Default | Required |
@@ -12,6 +11,7 @@
 | label_order | The naming order of the id output and Name tag | list | `<list>` | no |
 | name | Solution name, e.g. 'app' or 'jenkins' | string | `` | no |
 | namespace | Namespace, which could be your organization name or abbreviation, e.g. 'eg' or 'cp' | string | `` | no |
+| regex_replace_chars | By default only letters and digits are allowed in `namespace`, `environment`, `stage` and `name`. All other chars are removed | string | `[^a-zA-Z0-9]` | no |
 | stage | Stage, e.g. 'prod', 'staging', 'dev', OR 'source', 'build', 'test', 'deploy', 'release' | string | `` | no |
 | tags | Additional tags (e.g. `map('BusinessUnit','XYZ')` | map | `<map>` | no |
 

main.tf

@@ -3,15 +3,16 @@ locals {
 
   # Only maps that contain all the same attribute types can be merged, so the values have been set to list
   context_struct = {
-    name        = []
-    namespace   = []
-    environment = []
-    stage       = []
-    attributes  = []
-    tags_keys   = []
-    tags_values = []
-    delimiter   = []
-    label_order = []
+    name                = []
+    namespace           = []
+    environment         = []
+    stage               = []
+    attributes          = []
+    tags_keys           = []
+    tags_values         = []
+    delimiter           = []
+    label_order         = []
+    regex_replace_chars = []
   }
 
   # Merge the map of empty values, with the variable context, so that context_local always contains all map keys
@@ -26,19 +27,19 @@ locals {
   names                          = "${concat(local.context_local["name"], list(""))}"
   name_context_or_default        = "${length(local.names[0]) > 0 ? local.names[0] : var.name}"
   name_or_context                = "${var.name != ""? var.name : local.name_context_or_default}"
-  name                           = "${lower(replace(local.name_or_context, "/[^a-zA-Z0-9]/", ""))}"
+  name                           = "${lower(replace(local.name_or_context, "/var.regex_replace_chars/", ""))}"
   namespaces                     = "${concat(local.context_local["namespace"], list(""))}"
   namespace_context_or_default   = "${length(local.namespaces[0]) > 0 ? local.namespaces[0] : var.namespace}"
   namespace_or_context           = "${var.namespace != "" ? var.namespace : local.namespace_context_or_default}"
-  namespace                      = "${lower(replace(local.namespace_or_context, "/[^a-zA-Z0-9]/", ""))}"
+  namespace                      = "${lower(replace(local.namespace_or_context, "/var.regex_replace_chars/", ""))}"
   environments                   = "${concat(local.context_local["environment"], list(""))}"
   environment_context_or_default = "${length(local.environments[0]) > 0 ? local.environments[0] : var.environment}"
   environment_or_context         = "${var.environment != "" ? var.environment : local.environment_context_or_default}"
-  environment                    = "${lower(replace(local.environment_or_context, "/[^a-zA-Z0-9]/", ""))}"
+  environment                    = "${lower(replace(local.environment_or_context, "/var.regex_replace_chars/", ""))}"
   stages                         = "${concat(local.context_local["stage"], list(""))}"
   stage_context_or_default       = "${length(local.stages[0]) > 0 ? local.stages[0] : var.stage}"
   stage_or_context               = "${var.stage != "" ? var.stage : local.stage_context_or_default}"
-  stage                          = "${lower(replace(local.stage_or_context, "/[^a-zA-Z0-9]/", ""))}"
+  stage                          = "${lower(replace(local.stage_or_context, "/var.regex_replace_chars/", ""))}"
   delimiters                     = "${concat(local.context_local["delimiter"], list(""))}"
   delimiter_context_or_default   = "${length(local.delimiters[0]) > 0 ? local.delimiters[0] : var.delimiter}"
   delimiter                      = "${var.delimiter != "-" ? var.delimiter : local.delimiter_context_or_default}"

variables.tf

@@ -63,3 +63,9 @@ variable "label_order" {
   default     = []
   description = "The naming order of the id output and Name tag"
 }
+
+variable "regex_replace_chars" {
+  type        = "string"
+  default     = "[^a-zA-Z0-9]"
+  description = "By default only letters and digits are allowed in `namespace`, `environment`, `stage` and `name`. All other chars are removed"
+}