Merge pull request #284 from etiennedub/yaml_validation

Yaml validation on hierada

common/variables.tf

@@ -88,6 +88,10 @@ variable "hieradata" {
   type        = string
   default     = "---"
   description = "String formatted as YAML defining hiera key-value pairs to be included in the puppet environment"
+  validation {
+    condition     = can(yamldecode(var.hieradata))
+    error_message = "Hieradata needs to be valid YAML"
+  }
 }
 
 variable "sudoer_username" {
@@ -149,4 +153,4 @@ variable "puppetfile" {
   type        = string
   default     = ""
   description = "Additional content for the pupet environment Puppetfile. If the string includes a `forge` setting, the string replaces the original Puppetfile completely."
-}
+}