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fix: Use maps for IAM additional policies used in for_each #29

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fix: Use maps for IAM additional policies used in for_each #29

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6 changes: 3 additions & 3 deletions README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -207,7 +207,7 @@ No modules.
| <a name="input_create_job_queues"></a> [create\_job\_queues](#input\_create\_job\_queues) | Determines whether to create job queues | `bool` | `true` | no |
| <a name="input_create_service_iam_role"></a> [create\_service\_iam\_role](#input\_create\_service\_iam\_role) | Determines whether a an IAM role is created or to use an existing IAM role | `bool` | `true` | no |
| <a name="input_create_spot_fleet_iam_role"></a> [create\_spot\_fleet\_iam\_role](#input\_create\_spot\_fleet\_iam\_role) | Determines whether a an IAM role is created or to use an existing IAM role | `bool` | `false` | no |
| <a name="input_instance_iam_role_additional_policies"></a> [instance\_iam\_role\_additional\_policies](#input\_instance\_iam\_role\_additional\_policies) | Additional policies to be added to the IAM role | `list(string)` | `[]` | no |
| <a name="input_instance_iam_role_additional_policies"></a> [instance\_iam\_role\_additional\_policies](#input\_instance\_iam\_role\_additional\_policies) | Additional policies to be added to the IAM role | `map(string)` | `{}` | no |
| <a name="input_instance_iam_role_description"></a> [instance\_iam\_role\_description](#input\_instance\_iam\_role\_description) | Cluster instance IAM role description | `string` | `null` | no |
| <a name="input_instance_iam_role_name"></a> [instance\_iam\_role\_name](#input\_instance\_iam\_role\_name) | Cluster instance IAM role name | `string` | `null` | no |
| <a name="input_instance_iam_role_path"></a> [instance\_iam\_role\_path](#input\_instance\_iam\_role\_path) | Cluster instance IAM role path | `string` | `null` | no |
Expand All @@ -216,14 +216,14 @@ No modules.
| <a name="input_instance_iam_role_use_name_prefix"></a> [instance\_iam\_role\_use\_name\_prefix](#input\_instance\_iam\_role\_use\_name\_prefix) | Determines whether the IAM role name (`instance_iam_role_name`) is used as a prefix | `string` | `true` | no |
| <a name="input_job_definitions"></a> [job\_definitions](#input\_job\_definitions) | Map of job definitions to create | `any` | `{}` | no |
| <a name="input_job_queues"></a> [job\_queues](#input\_job\_queues) | Map of job queue and scheduling policy defintions to create | `any` | `{}` | no |
| <a name="input_service_iam_role_additional_policies"></a> [service\_iam\_role\_additional\_policies](#input\_service\_iam\_role\_additional\_policies) | Additional policies to be added to the IAM role | `list(string)` | `[]` | no |
| <a name="input_service_iam_role_additional_policies"></a> [service\_iam\_role\_additional\_policies](#input\_service\_iam\_role\_additional\_policies) | Additional policies to be added to the IAM role | `map(string)` | `{}` | no |
| <a name="input_service_iam_role_description"></a> [service\_iam\_role\_description](#input\_service\_iam\_role\_description) | Batch service IAM role description | `string` | `null` | no |
| <a name="input_service_iam_role_name"></a> [service\_iam\_role\_name](#input\_service\_iam\_role\_name) | Batch service IAM role name | `string` | `null` | no |
| <a name="input_service_iam_role_path"></a> [service\_iam\_role\_path](#input\_service\_iam\_role\_path) | Batch service IAM role path | `string` | `null` | no |
| <a name="input_service_iam_role_permissions_boundary"></a> [service\_iam\_role\_permissions\_boundary](#input\_service\_iam\_role\_permissions\_boundary) | ARN of the policy that is used to set the permissions boundary for the IAM role | `string` | `null` | no |
| <a name="input_service_iam_role_tags"></a> [service\_iam\_role\_tags](#input\_service\_iam\_role\_tags) | A map of additional tags to add to the IAM role created | `map(string)` | `{}` | no |
| <a name="input_service_iam_role_use_name_prefix"></a> [service\_iam\_role\_use\_name\_prefix](#input\_service\_iam\_role\_use\_name\_prefix) | Determines whether the IAM role name (`service_iam_role_name`) is used as a prefix | `bool` | `true` | no |
| <a name="input_spot_fleet_iam_role_additional_policies"></a> [spot\_fleet\_iam\_role\_additional\_policies](#input\_spot\_fleet\_iam\_role\_additional\_policies) | Additional policies to be added to the IAM role | `list(string)` | `[]` | no |
| <a name="input_spot_fleet_iam_role_additional_policies"></a> [spot\_fleet\_iam\_role\_additional\_policies](#input\_spot\_fleet\_iam\_role\_additional\_policies) | Additional policies to be added to the IAM role | `map(string)` | `{}` | no |
| <a name="input_spot_fleet_iam_role_description"></a> [spot\_fleet\_iam\_role\_description](#input\_spot\_fleet\_iam\_role\_description) | Spot fleet IAM role description | `string` | `null` | no |
| <a name="input_spot_fleet_iam_role_name"></a> [spot\_fleet\_iam\_role\_name](#input\_spot\_fleet\_iam\_role\_name) | Spot fleet IAM role name | `string` | `null` | no |
| <a name="input_spot_fleet_iam_role_path"></a> [spot\_fleet\_iam\_role\_path](#input\_spot\_fleet\_iam\_role\_path) | Spot fleet IAM role path | `string` | `null` | no |
Expand Down
6 changes: 3 additions & 3 deletions examples/ec2/main.tf
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Expand Up @@ -31,9 +31,9 @@ module "batch" {
instance_iam_role_name = "${local.name}-ecs-instance"
instance_iam_role_path = "/batch/"
instance_iam_role_description = "IAM instance role/profile for AWS Batch ECS instance(s)"
instance_iam_role_additional_policies = [
"arn:aws:iam::aws:policy/AmazonSSMManagedInstanceCore"
]
instance_iam_role_additional_policies = {
AmazonSSMManagedInstanceCore = "arn:aws:iam::aws:policy/AmazonSSMManagedInstanceCore"
}
instance_iam_role_tags = {
ModuleCreatedRole = "Yes"
}
Expand Down
33 changes: 24 additions & 9 deletions main.tf
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Original file line number Diff line number Diff line change
Expand Up @@ -101,10 +101,29 @@ resource "aws_iam_role" "instance" {
tags = merge(var.tags, var.instance_iam_role_tags)
}

locals {
instance_role_policy_map = merge(
{
AmazonEC2ContainerServiceforEC2Role = "arn:${data.aws_partition.current.partition}:iam::aws:policy/service-role/AmazonEC2ContainerServiceforEC2Role"
},
var.instance_iam_role_additional_policies
)
service_role_policy_map = merge(
{
AWSBatchServiceRole = "arn:${data.aws_partition.current.partition}:iam::aws:policy/service-role/AWSBatchServiceRole"
},
var.service_iam_role_additional_policies
)
spot_fleet_policy_map = merge(
{
AmazonEC2SpotFleetTaggingRole = "arn:${data.aws_partition.current.partition}:iam::aws:policy/service-role/AmazonEC2SpotFleetTaggingRole"
},
var.spot_fleet_iam_role_additional_policies
)
}

resource "aws_iam_role_policy_attachment" "instance" {
for_each = var.create && var.create_instance_iam_role ? toset(compact(distinct(concat([
"arn:${data.aws_partition.current.partition}:iam::aws:policy/service-role/AmazonEC2ContainerServiceforEC2Role"
], var.instance_iam_role_additional_policies)))) : toset([])
for_each = var.create && var.create_instance_iam_role ? local.instance_role_policy_map : {}

policy_arn = each.value
role = aws_iam_role.instance[0].name
Expand Down Expand Up @@ -163,9 +182,7 @@ resource "aws_iam_role" "service" {
}

resource "aws_iam_role_policy_attachment" "service" {
for_each = var.create && var.create_service_iam_role ? toset(compact(distinct(concat([
"arn:${data.aws_partition.current.partition}:iam::aws:policy/service-role/AWSBatchServiceRole"
], var.service_iam_role_additional_policies)))) : toset([])
for_each = var.create && var.create_service_iam_role ? local.service_role_policy_map : {}

policy_arn = each.value
role = aws_iam_role.service[0].name
Expand Down Expand Up @@ -209,9 +226,7 @@ resource "aws_iam_role" "spot_fleet" {
}

resource "aws_iam_role_policy_attachment" "spot_fleet" {
for_each = var.create && var.create_spot_fleet_iam_role ? toset(compact(distinct(concat([
"arn:${data.aws_partition.current.partition}:iam::aws:policy/service-role/AmazonEC2SpotFleetTaggingRole"
], var.spot_fleet_iam_role_additional_policies)))) : toset([])
for_each = var.create && var.create_spot_fleet_iam_role ? local.spot_fleet_policy_map : {}

policy_arn = each.value
role = aws_iam_role.spot_fleet[0].name
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12 changes: 6 additions & 6 deletions variables.tf
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Original file line number Diff line number Diff line change
Expand Up @@ -62,8 +62,8 @@ variable "instance_iam_role_permissions_boundary" {

variable "instance_iam_role_additional_policies" {
description = "Additional policies to be added to the IAM role"
type = list(string)
default = []
type = map(string)
default = {}
}

variable "instance_iam_role_tags" {
Expand Down Expand Up @@ -114,8 +114,8 @@ variable "service_iam_role_permissions_boundary" {

variable "service_iam_role_additional_policies" {
description = "Additional policies to be added to the IAM role"
type = list(string)
default = []
type = map(string)
default = {}
}

variable "service_iam_role_tags" {
Expand Down Expand Up @@ -166,8 +166,8 @@ variable "spot_fleet_iam_role_permissions_boundary" {

variable "spot_fleet_iam_role_additional_policies" {
description = "Additional policies to be added to the IAM role"
type = list(string)
default = []
type = map(string)
default = {}
}

variable "spot_fleet_iam_role_tags" {
Expand Down
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