Add lambda role name option

Author: akarwande

README.md

@@ -177,6 +177,7 @@ Available targets:
 | <a name="input_publish"></a> [publish](#input\_publish) | Whether to publish creation/change as new Lambda Function Version. | `bool` | `false` | no |
 | <a name="input_regex_replace_chars"></a> [regex\_replace\_chars](#input\_regex\_replace\_chars) | Terraform regular expression (regex) string.<br>Characters matching the regex will be removed from the ID elements.<br>If not set, `"/[^a-zA-Z0-9-]/"` is used to remove all characters other than hyphens, letters and digits. | `string` | `null` | no |
 | <a name="input_reserved_concurrent_executions"></a> [reserved\_concurrent\_executions](#input\_reserved\_concurrent\_executions) | The amount of reserved concurrent executions for this lambda function. A value of 0 disables lambda from being triggered and -1 removes any concurrency limitations. | `number` | `-1` | no |
+| <a name="input_role_name"></a> [role\_name](#input\_role\_name) | The rolename used for the Lambda Function. If not provided, a default role name will be used. | `string` | `null` | no |
 | <a name="input_runtime"></a> [runtime](#input\_runtime) | The runtime environment for the Lambda function you are uploading. | `string` | `null` | no |
 | <a name="input_s3_bucket"></a> [s3\_bucket](#input\_s3\_bucket) | The S3 bucket location containing the function's deployment package. Conflicts with filename and image\_uri.<br>  This bucket must reside in the same AWS region where you are creating the Lambda function. | `string` | `null` | no |
 | <a name="input_s3_key"></a> [s3\_key](#input\_s3\_key) | The S3 key of an object containing the function's deployment package. Conflicts with filename and image\_uri. | `string` | `null` | no |

docs/terraform.md

@@ -80,6 +80,7 @@
 | <a name="input_publish"></a> [publish](#input\_publish) | Whether to publish creation/change as new Lambda Function Version. | `bool` | `false` | no |
 | <a name="input_regex_replace_chars"></a> [regex\_replace\_chars](#input\_regex\_replace\_chars) | Terraform regular expression (regex) string.<br>Characters matching the regex will be removed from the ID elements.<br>If not set, `"/[^a-zA-Z0-9-]/"` is used to remove all characters other than hyphens, letters and digits. | `string` | `null` | no |
 | <a name="input_reserved_concurrent_executions"></a> [reserved\_concurrent\_executions](#input\_reserved\_concurrent\_executions) | The amount of reserved concurrent executions for this lambda function. A value of 0 disables lambda from being triggered and -1 removes any concurrency limitations. | `number` | `-1` | no |
+| <a name="input_role_name"></a> [role\_name](#input\_role\_name) | The rolename used for the Lambda Function. If not provided, a default role name will be used. | `string` | `null` | no |
 | <a name="input_runtime"></a> [runtime](#input\_runtime) | The runtime environment for the Lambda function you are uploading. | `string` | `null` | no |
 | <a name="input_s3_bucket"></a> [s3\_bucket](#input\_s3\_bucket) | The S3 bucket location containing the function's deployment package. Conflicts with filename and image\_uri.<br>  This bucket must reside in the same AWS region where you are creating the Lambda function. | `string` | `null` | no |
 | <a name="input_s3_key"></a> [s3\_key](#input\_s3\_key) | The S3 key of an object containing the function's deployment package. Conflicts with filename and image\_uri. | `string` | `null` | no |

iam-role.tf

@@ -5,7 +5,7 @@ locals {
 resource "aws_iam_role" "this" {
   count = local.enabled ? 1 : 0
 
-  name                 = "${var.function_name}-${local.region_name}"
+  name                 = var.role_name == null ? "${var.function_name}-${local.region_name}" : var.role_name
   assume_role_policy   = join("", data.aws_iam_policy_document.assume_role_policy[*].json)
   permissions_boundary = var.permissions_boundary
 

variables.tf

@@ -141,6 +141,12 @@ variable "reserved_concurrent_executions" {
   default     = -1
 }
 
+variable "role_name" {
+  type        = string
+  description = "The rolename used for the Lambda Function. If not provided, a default role name will be used."
+  default     = null
+}
+
 variable "runtime" {
   type        = string
   description = "The runtime environment for the Lambda function you are uploading."