Merge pull request #17 from gruntwork-io/tf12

Tf12 Upgrade

.circleci/config.yml

@@ -15,7 +15,7 @@ jobs:
             curl -Ls https://raw.githubusercontent.com/gruntwork-io/gruntwork-installer/master/bootstrap-gruntwork-installer.sh | bash /dev/stdin --version v0.0.21
             gruntwork-install --module-name "gruntwork-module-circleci-helpers" --repo "https://github.com/gruntwork-io/module-ci" --tag "v0.13.3"
             gruntwork-install --binary-name "terratest_log_parser" --repo "https://github.com/gruntwork-io/terratest" --tag "v0.13.20"
-            configure-environment-for-gruntwork-module --circle-ci-2 --use-go-dep --go-src-path test --terragrunt-version NONE
+            configure-environment-for-gruntwork-module --circle-ci-2 --use-go-dep --go-src-path test --terragrunt-version NONE --terraform-version 0.12.0
 
       - run:
           name: run tests (with python2)

README.md

@@ -1,4 +1,6 @@
-[![Maintained by Gruntwork.io](https://img.shields.io/badge/maintained%20by-gruntwork.io-%235849a6.svg)](https://gruntwork.io/?ref=repo_kubergrunt)
+[![Maintained by Gruntwork.io](https://img.shields.io/badge/maintained%20by-gruntwork.io-%235849a6.svg)](https://gruntwork.io/?ref=repo_package_terraform_utilities)
+[![GitHub tag (latest SemVer)](https://img.shields.io/github/tag/gruntwork-io/package-terraform-utilities.svg?label=latest)](https://github.com/gruntwork-io/package-terraform-utilities/releases/latest)
+![Terraform Version](https://img.shields.io/badge/tf-%3E%3D0.12.0-blue.svg)
 
 # Terraform Utility Modules
 
@@ -15,8 +17,6 @@ This repo provides a Gruntwork IaC Package and has the following folder structur
 
 The following modules are available:
 
-* [intermediate-variable](/modules/intermediate-variable): A simple module that returns as output the exact variables
-  you pass to it as inputs. This gives you a way to store intermediate values that contain interpolations.
 * [join-path](/modules/join-path): This module can be used to join a list of given path parts into a single path that is
   platform/operating system aware. **(This module requires Python)**
 * [operating-system](/modules/operating-system): This module can be used to figure out what operating system is being
@@ -30,6 +30,12 @@ The following modules are available:
   and runs them as an local-exec provisioner on a null_resource. PEX files are python executables that contain all the
   requirements necessary to run the script. **(This module requires Python)**
 
+The following modules were deprecated and removed:
+
+* [intermediate-variable](/modules/intermediate-variable): This module has been superseded by [terraform local
+  values](https://www.terraform.io/docs/configuration/locals.html). To upgrade, switch usage of `intermediate-variable`
+  with `locals`.
+
 Click on each module above to see its documentation. Head over to the [examples](/examples) folder for example usage.
 
 

examples/join-path/main.tf

@@ -1,3 +1,7 @@
+terraform {
+  required_version = ">= 0.12"
+}
+
 module "path" {
   # When using these modules in your own templates, you will need to use a Git URL with a ref attribute that pins you
   # to a specific version of the modules, such as the following example:

examples/join-path/outputs.tf

@@ -1,3 +1,3 @@
 output "path" {
-  value = "${module.path.path}"
+  value = module.path.path
 }

examples/list-remove/main.tf

@@ -1,9 +1,13 @@
+terraform {
+  required_version = ">= 0.12"
+}
+
 module "list_remove" {
   # When using these modules in your own templates, you will need to use a Git URL with a ref attribute that pins you
   # to a specific version of the modules, such as the following example:
   # source = "git::git@github.com:gruntwork-io/package-terraform-utilities.git//modules/list-remove?ref=v0.0.8"
   source = "../../modules/list-remove"
 
-  original_list   = ["${var.input_list}"]
-  items_to_remove = ["${var.items_to_remove}"]
+  original_list   = var.input_list
+  items_to_remove = var.items_to_remove
 }

examples/list-remove/outputs.tf

@@ -1,7 +1,7 @@
 output "output_list" {
-  value = "${module.list_remove.output_list}"
+  value = module.list_remove.output_list
 }
 
 output "output_list_as_csv" {
-  value = "${join(",", module.list_remove.output_list)}"
+  value = join(",", module.list_remove.output_list)
 }

examples/list-remove/variables.tf

@@ -1,9 +1,9 @@
 variable "input_list" {
   description = "The list of items from which you wish to remove items."
-  type        = "list"
+  type        = list(any)
 }
 
 variable "items_to_remove" {
   description = "The list of items you wish to remove from the input_list."
-  type        = "list"
+  type        = list(any)
 }

examples/operating-system/main.tf

@@ -1,3 +1,7 @@
+terraform {
+  required_version = ">= 0.12"
+}
+
 module "os" {
   # When using these modules in your own templates, you will need to use a Git URL with a ref attribute that pins you
   # to a specific version of the modules, such as the following example:

examples/operating-system/outputs.tf

@@ -1,7 +1,7 @@
 output "os_name" {
-  value = "${module.os.name}"
+  value = module.os.name
 }
 
 output "path_separator" {
-  value = "${module.os.path_separator}"
+  value = module.os.path_separator
 }

examples/pex/main.tf

@@ -4,6 +4,10 @@
 # terraform in a portable manner that can work with multiple platforms and python versions.
 # ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
+terraform {
+  required_version = ">= 0.12"
+}
+
 # Run the PEX binary as a local-exec provisioner on a null_resource.
 module "pex_resource" {
   # When using these modules in your own templates, you will need to use a Git URL with a ref attribute that pins you
@@ -13,22 +17,22 @@ module "pex_resource" {
 
   # Path components to each of the PEX binary
   python2_pex_path_parts = [
-    "${path.module}",
+    path.module,
     "sample-python-script",
     "bin",
     "sample_python_script_py27_env.pex",
   ]
 
   python3_pex_path_parts = [
-    "${path.module}",
+    path.module,
     "sample-python-script",
     "bin",
     "sample_python_script_py3_env.pex",
   ]
 
   # Path components to the folder that holds the python modules for sample_python_script
   pex_module_path_parts = [
-    "${path.module}",
+    path.module,
     "sample-python-script",
   ]
 
@@ -45,22 +49,22 @@ module "pex_data" {
 
   # Path components to each of the PEX binary
   python2_pex_path_parts = [
-    "${path.module}",
+    path.module,
     "sample-python-script",
     "bin",
     "sample_python_script_py27_env.pex",
   ]
 
   python3_pex_path_parts = [
-    "${path.module}",
+    path.module,
     "sample-python-script",
     "bin",
     "sample_python_script_py3_env.pex",
   ]
 
   # Path components to the folder that holds the python modules for sample_python_script
   pex_module_path_parts = [
-    "${path.module}",
+    path.module,
     "sample-python-script",
   ]
 
@@ -72,6 +76,7 @@ module "pex_data" {
 
   # Query parameter for the data source, that will be passed into the script in json format
   command_query = {
-    "echo" = "${var.echo_string}"
+    "echo" = var.echo_string
   }
 }
+

examples/pex/outputs.tf

@@ -1,9 +1,9 @@
 output "command_echo" {
   description = "For the pex data source, if successful, this will contain the echo string."
-  value       = "${lookup(module.pex_data.result, "echo")}"
+  value       = module.pex_data.result["echo"]
 }
 
 output "command_python_version" {
   description = "Read out the python version that was used to run the PEX"
-  value       = "${lookup(module.pex_data.result, "python_version_info")}"
+  value       = module.pex_data.result["python_version_info"]
 }

examples/pex/variables.tf

@@ -1,4 +1,5 @@
 variable "echo_string" {
   description = "This string will be echo'd back from the pex data source."
+  type        = string
   default     = "Hello world!"
 }

examples/require-executable/main.tf

@@ -1,11 +1,15 @@
+terraform {
+  required_version = ">= 0.12"
+}
+
 module "require_executables" {
   # When using these modules in your own templates, you will need to use a Git URL with a ref attribute that pins you
   # to a specific version of the modules, such as the following example:
   # source = "git::git@github.com:gruntwork-io/package-terraform-utilities.git//modules/require-executable?ref=v1.0.8"
   source = "../../modules/require-executable"
 
-  required_executables = ["${var.required_executables}"]
-  error_message        = "${var.error_message}"
+  required_executables = var.required_executables
+  error_message        = var.error_message
 }
 
 # Conditional checking example
@@ -15,6 +19,6 @@ module "conditional_require_executables" {
   # source = "git::git@github.com:gruntwork-io/package-terraform-utilities.git//modules/require-executable?ref=v1.0.8"
   source = "../../modules/require-executable"
 
-  required_executables = ["${var.validate_bad_executable ? "this-executable-should-not-exist" : ""}"]
-  error_message        = "${var.bad_executable_error_message}"
+  required_executables = [var.validate_bad_executable ? "this-executable-should-not-exist" : ""]
+  error_message        = var.bad_executable_error_message
 }

examples/require-executable/variables.tf

@@ -5,19 +5,22 @@
 
 variable "required_executables" {
   description = "A list of named executables that should exist on the OS PATH."
-  type        = "list"
+  type        = list(string)
 }
 
 variable "error_message" {
   description = "Error message to show if the required executable is not found. This is printed for each executable that was not found. The module will make the following substitutions in the string: `__EXECUTABLE_NAME__` will become the name of the executable that was not found."
+  type        = string
 }
 
 variable "validate_bad_executable" {
   description = "Whether or not to validate the existence of a bad executable."
+  type        = bool
   default     = false
 }
 
 variable "bad_executable_error_message" {
   description = "Error message to show for bad_executable check."
+  type        = string
   default     = ""
 }