feat: replace template provider with templatefile function (#95)

Co-authored-by: cloudpossebot <[email protected]>

Author: kevcube

README.md

@@ -104,14 +104,12 @@ Available targets:
 |------|---------|
 | <a name="requirement_terraform"></a> [terraform](#requirement\_terraform) | >= 0.13.0 |
 | <a name="requirement_aws"></a> [aws](#requirement\_aws) | >= 2.55 |
-| <a name="requirement_template"></a> [template](#requirement\_template) | >= 2.1 |
 
 ## Providers
 
 | Name | Version |
 |------|---------|
 | <a name="provider_aws"></a> [aws](#provider\_aws) | >= 2.55 |
-| <a name="provider_template"></a> [template](#provider\_template) | >= 2.1 |
 
 ## Modules
 
@@ -135,7 +133,6 @@ Available targets:
 | [aws_iam_policy_document.main](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/data-sources/iam_policy_document) | data source |
 | [aws_region.default](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/data-sources/region) | data source |
 | [aws_route53_zone.domain](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/data-sources/route53_zone) | data source |
-| [template_file.user_data](https://registry.terraform.io/providers/hashicorp/template/latest/docs/data-sources/file) | data source |
 
 ## Inputs
 

docs/terraform.md

@@ -5,14 +5,12 @@
 |------|---------|
 | <a name="requirement_terraform"></a> [terraform](#requirement\_terraform) | >= 0.13.0 |
 | <a name="requirement_aws"></a> [aws](#requirement\_aws) | >= 2.55 |
-| <a name="requirement_template"></a> [template](#requirement\_template) | >= 2.1 |
 
 ## Providers
 
 | Name | Version |
 |------|---------|
 | <a name="provider_aws"></a> [aws](#provider\_aws) | >= 2.55 |
-| <a name="provider_template"></a> [template](#provider\_template) | >= 2.1 |
 
 ## Modules
 
@@ -36,7 +34,6 @@
 | [aws_iam_policy_document.main](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/data-sources/iam_policy_document) | data source |
 | [aws_region.default](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/data-sources/region) | data source |
 | [aws_route53_zone.domain](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/data-sources/route53_zone) | data source |
-| [template_file.user_data](https://registry.terraform.io/providers/hashicorp/template/latest/docs/data-sources/file) | data source |
 
 ## Inputs
 

examples/complete/versions.tf

@@ -6,9 +6,5 @@ terraform {
       source  = "hashicorp/aws"
       version = ">= 2.55"
     }
-    template = {
-      source  = "hashicorp/template"
-      version = ">= 2.1"
-    }
   }
 }

main.tf

@@ -8,6 +8,11 @@ locals {
     replace(join("", aws_eip.default.*.public_ip), ".", "-"),
     data.aws_region.default.name == "us-east-1" ? "compute-1" : format("%s.compute", data.aws_region.default.name)
   ) : null
+  user_data_templated = templatefile("${path.module}/${var.user_data_template}", {
+    user_data   = join("\n", var.user_data)
+    ssm_enabled = var.ssm_enabled
+    ssh_user    = var.ssh_user
+  })
 }
 
 data "aws_region" "default" {}
@@ -46,24 +51,13 @@ data "aws_route53_zone" "domain" {
   zone_id = var.zone_id
 }
 
-data "template_file" "user_data" {
-  count    = module.this.enabled ? 1 : 0
-  template = file("${path.module}/${var.user_data_template}")
-
-  vars = {
-    user_data   = join("\n", var.user_data)
-    ssm_enabled = var.ssm_enabled
-    ssh_user    = var.ssh_user
-  }
-}
-
 resource "aws_instance" "default" {
   #bridgecrew:skip=BC_AWS_PUBLIC_12: Skipping `EC2 Should Not Have Public IPs` check. NAT instance requires public IP.
   #bridgecrew:skip=BC_AWS_GENERAL_31: Skipping `Ensure Instance Metadata Service Version 1 is not enabled` check until BridgeCrew support condition evaluation. See https://github.com/bridgecrewio/checkov/issues/793
   count                       = module.this.enabled ? 1 : 0
   ami                         = coalesce(var.ami, join("", data.aws_ami.default.*.id))
   instance_type               = var.instance_type
-  user_data                   = length(var.user_data_base64) > 0 ? var.user_data_base64 : data.template_file.user_data[0].rendered
+  user_data                   = length(var.user_data_base64) > 0 ? var.user_data_base64 : local.user_data_templated
   vpc_security_group_ids      = compact(concat(module.security_group.*.id, var.security_groups))
   iam_instance_profile        = local.instance_profile
   associate_public_ip_address = var.associate_public_ip_address

versions.tf

@@ -6,9 +6,5 @@ terraform {
       source  = "hashicorp/aws"
       version = ">= 2.55"
     }
-    template = {
-      source  = "hashicorp/template"
-      version = ">= 2.1"
-    }
   }
 }