Changed random string in names to be optional (#3)

* changed random string in names to be optional

Author: linnhege

example/default/main.tf

@@ -5,6 +5,8 @@ module "lambda-slack" {
 
   name_prefix = "name-prefix"
 
+  has_random_postfix = false
+
   handler = "bin/main"
 
   slack_hook = "https://hooks.slack.com/services/Secret"

iam.tf

@@ -1,5 +1,5 @@
 resource "aws_iam_role" "lambda_role" {
-  name               = "${var.name_prefix}_lambda_role_${random_string.lambda_postfix_generator.result}"
+  name               = "${var.name_prefix}_lambda_role${var.has_random_postfix ? "_${random_string.lambda_postfix_generator.result}" : ""}"
   assume_role_policy = "${data.aws_iam_policy_document.lambda_assume.json}"
 }
 
@@ -22,7 +22,7 @@ data "aws_iam_policy_document" "lambda_assume" {
 }
 
 resource "aws_iam_role_policy" "lambda_main" {
-  name   = "${var.name_prefix}_lambda_policy_${random_string.lambda_postfix_generator.result}"
+  name   = "${var.name_prefix}_lambda_policy${var.has_random_postfix ? "_${random_string.lambda_postfix_generator.result}" : ""}"
   role   = "${aws_iam_role.lambda_role.name}"
   policy = "${data.aws_iam_policy_document.lambda_services_dashboard.json}"
 }

main.tf

@@ -7,13 +7,13 @@ resource "random_string" "lambda_postfix_generator" {
 }
 
 resource "aws_sns_topic" "alarm_topic" {
-  name = "${var.topic_name}-${random_string.lambda_postfix_generator.result}"
+  name = "${var.topic_name}${var.has_random_postfix ? "-${random_string.lambda_postfix_generator.result}" : ""}"
 }
 
 resource "aws_lambda_function" "notify_slack" {
   s3_bucket     = "${var.lambda_s3_bucket}"
   s3_key        = "${var.s3_key}"
-  function_name = "${var.name_prefix}-slack-notify-${random_string.lambda_postfix_generator.result}"
+  function_name = "${var.name_prefix}-slack-notify${var.has_random_postfix ? "-${random_string.lambda_postfix_generator.result}" : ""}"
   handler       = "${var.handler}"
   runtime       = "go1.x"
   timeout       = "${var.timeout}"

variables.tf

@@ -6,6 +6,11 @@ variable "topic_name" {
   description = "A prefix that will be added to resources so that they are unique."
 }
 
+variable "has_random_postfix" {
+  description = "Boolean for adding a random string to the end of the iam role, iam policy, topic and function names"
+  default     = true
+}
+
 variable "handler" {
   description = "The function entrypoint in the code."
   default     = "main"