feat: Add support for Step Function type - STANDARD (default) or EXPRESS (#2)

Author: cojmcc

.gitignore

@@ -1,9 +1,6 @@
 .terraform
-*.tfstate.backup
-*.tfstate
-*.tfvars
-*.tfplan
+terraform.tfstate
+*.tfstate*
+terraform.tfvars
 
-builds/
-
-__pycache__/
+.terraform.lock.hcl

README.md

@@ -50,6 +50,8 @@ EOF
     }
   }
 
+  type = "STANDARD"
+
   tags = {
     Module = "my"
   }
@@ -127,13 +129,13 @@ module "step_function" {
 | Name | Version |
 |------|---------|
 | terraform | >= 0.12.6 |
-| aws | >= 2.67 |
+| aws | >= 3.27 |
 
 ## Providers
 
 | Name | Version |
 |------|---------|
-| aws | >= 2.67 |
+| aws | >= 3.27 |
 
 ## Inputs
 
@@ -167,6 +169,7 @@ module "step_function" {
 | service\_integrations | Map of AWS service integrations to allow in IAM role policy | `any` | `{}` | no |
 | tags | Maps of tags to assign to the Step Function | `map(string)` | `{}` | no |
 | trusted\_entities | Step Function additional trusted entities for assuming roles (trust relationship) | `list(string)` | `[]` | no |
+| type | Determines whether a Standard or Express state machine is created. The default is STANDARD. Valid Values: STANDARD \| EXPRESS | `string` | `"STANDARD"` | no |
 | use\_existing\_role | Whether to use an existing IAM role for this Step Function | `bool` | `false` | no |
 
 ## Outputs

examples/complete/README.md

@@ -23,14 +23,14 @@ Note that this example may create resources which cost money. Run `terraform des
 | Name | Version |
 |------|---------|
 | terraform | >= 0.12.6 |
-| aws | >= 2.67 |
+| aws | >= 3.27 |
 | random | >= 2 |
 
 ## Providers
 
 | Name | Version |
 |------|---------|
-| aws | >= 2.67 |
+| aws | >= 3.27 |
 | random | >= 2 |
 
 ## Inputs

examples/complete/main.tf

@@ -36,6 +36,8 @@ module "step_function" {
 
   name = random_pet.this.id
 
+  type = "express"
+
   definition = local.definition_template
 
   service_integrations = {

examples/complete/versions.tf

@@ -2,7 +2,7 @@ terraform {
   required_version = ">= 0.12.6"
 
   required_providers {
-    aws    = ">= 2.67"
+    aws    = ">= 3.27"
     random = ">= 2"
   }
 }

main.tf

@@ -1,5 +1,5 @@
 locals {
-  create_role = var.create && var.create_role && ! var.use_existing_role
+  create_role = var.create && var.create_role && !var.use_existing_role
   aws_region  = local.create_role && var.aws_region_assume_role == "" ? data.aws_region.current[0].name : var.aws_region_assume_role
 
   role_name = local.create_role ? coalesce(var.role_name, var.name) : null
@@ -13,6 +13,8 @@ resource "aws_sfn_state_machine" "this" {
   role_arn   = var.use_existing_role ? var.role_arn : aws_iam_role.this[0].arn
   definition = var.definition
 
+  type = upper(var.type)
+
   tags = merge({ Name = var.name }, var.tags)
 }
 

variables.tf

@@ -44,6 +44,17 @@ variable "tags" {
   default     = {}
 }
 
+variable "type" {
+  description = "Determines whether a Standard or Express state machine is created. The default is STANDARD. Valid Values: STANDARD | EXPRESS"
+  type        = string
+  default     = "STANDARD"
+
+  validation {
+    condition     = contains(["STANDARD", "EXPRESS"], upper(var.type))
+    error_message = "Step Function type must be one of the following (STANDARD | EXPRESS)."
+  }
+}
+
 ###########
 # IAM Role
 ###########

versions.tf

@@ -2,6 +2,6 @@ terraform {
   required_version = ">= 0.12.6"
 
   required_providers {
-    aws = ">= 2.67"
+    aws = ">= 3.27"
   }
 }