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feat(sfn-state-machine): improve how to use resource_group in module #21

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Merged
merged 1 commit into from
Sep 10, 2025
Merged

feat(sfn-state-machine): improve how to use resource_group in module #21

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16 changes: 16 additions & 0 deletions modules/sfn-state-machine/outputs.tf
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Original file line number Diff line number Diff line change
Expand Up @@ -101,3 +101,19 @@ output "created_at" {
description = "The date the state machine was created."
value = aws_sfn_state_machine.this.creation_date
}

output "resource_group" {
description = "The resource group created to manage resources in this module."
value = merge(
{
enabled = var.resource_group.enabled && var.module_tags_enabled
},
(var.resource_group.enabled && var.module_tags_enabled
? {
arn = module.resource_group[0].arn
name = module.resource_group[0].name
}
: {}
)
)
Comment on lines +107 to +118
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@gemini-code-assist gemini-code-assist bot Sep 10, 2025

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medium

The current implementation using merge produces an output with an inconsistent structure, which can be difficult for consumers of the module. It can be simplified and improved by using a single conditional expression. This will make the code more readable and ensure the output object always has the same set of keys (enabled, arn, name), which is a best practice for module outputs.

  value = (var.resource_group.enabled && var.module_tags_enabled) ? {
    enabled = true
    arn     = module.resource_group[0].arn
    name    = module.resource_group[0].name
  } : {
    enabled = false
    arn     = null
    name    = null
  }

}
10 changes: 5 additions & 5 deletions modules/sfn-state-machine/resource-group.tf
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@@ -1,6 +1,6 @@
locals {
resource_group_name = (var.resource_group_name != ""
? var.resource_group_name
resource_group_name = (var.resource_group.name != ""
? var.resource_group.name
: join(".", [
local.metadata.package,
local.metadata.module,
Expand All @@ -12,12 +12,12 @@ locals {

module "resource_group" {
source = "tedilabs/misc/aws//modules/resource-group"
version = "~> 0.10.0"
version = "~> 0.12.0"

count = (var.resource_group_enabled && var.module_tags_enabled) ? 1 : 0
count = (var.resource_group.enabled && var.module_tags_enabled) ? 1 : 0

name = local.resource_group_name
description = var.resource_group_description
description = var.resource_group.description

query = {
resource_tags = local.module_tags
Expand Down
32 changes: 15 additions & 17 deletions modules/sfn-state-machine/variables.tf
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Expand Up @@ -189,23 +189,21 @@ variable "module_tags_enabled" {
# Resource Group
###################################################

variable "resource_group_enabled" {
description = "(Optional) Whether to create Resource Group to find and group AWS resources which are created by this module."
type = bool
default = true
nullable = false
}

variable "resource_group_name" {
description = "(Optional) The name of Resource Group. A Resource Group name can have a maximum of 127 characters, including letters, numbers, hyphens, dots, and underscores. The name cannot start with `AWS` or `aws`."
type = string
default = ""
nullable = false
}

variable "resource_group_description" {
description = "(Optional) The description of Resource Group."
type = string
default = "Managed by Terraform."
nullable = false

variable "resource_group" {
description = <<EOF
(Optional) A configurations of Resource Group for this module. `resource_group` as defined below.
(Optional) `enabled` - Whether to create Resource Group to find and group AWS resources which are created by this module. Defaults to `true`.
(Optional) `name` - The name of Resource Group. A Resource Group name can have a maximum of 127 characters, including letters, numbers, hyphens, dots, and underscores. The name cannot start with `AWS` or `aws`. If not provided, a name will be generated using the module name and instance name.
(Optional) `description` - The description of Resource Group. Defaults to `Managed by Terraform.`.
EOF
type = object({
enabled = optional(bool, true)
name = optional(string, "")
description = optional(string, "Managed by Terraform.")
})
default = {}
nullable = false
}