Added dead_letter_config (#15)

* Added dead_letter_config

Co-authored-by: cloudpossebot <[email protected]>
Co-authored-by: nitrocode <[email protected]>

.github/renovate.json

@@ -4,9 +4,9 @@
     ":preserveSemverRanges"
   ],
   "labels": ["auto-update"],
+  "dependencyDashboardAutoclose": true,
   "enabledManagers": ["terraform"],
   "terraform": {
     "ignorePaths": ["**/context.tf", "examples/**"]
   }
 }
-

README.md

@@ -187,6 +187,7 @@ Available targets:
 | <a name="input_cloudwatch_logs_retention_in_days"></a> [cloudwatch\_logs\_retention\_in\_days](#input\_cloudwatch\_logs\_retention\_in\_days) | Specifies the number of days you want to retain log events in the specified log group. Possible values are: <br>  1, 3, 5, 7, 14, 30, 60, 90, 120, 150, 180, 365, 400, 545, 731, 1827, 3653, and 0. If you select 0, the events in the <br>  log group are always retained and never expire. | `number` | `null` | no |
 | <a name="input_context"></a> [context](#input\_context) | Single object for setting entire context at once.<br>See description of individual variables for details.<br>Leave string and numeric variables as `null` to use default value.<br>Individual variable settings (non-null) override settings in context object,<br>except for attributes, tags, and additional\_tag\_map, which are merged. | `any` | <pre>{<br>  "additional_tag_map": {},<br>  "attributes": [],<br>  "delimiter": null,<br>  "descriptor_formats": {},<br>  "enabled": true,<br>  "environment": null,<br>  "id_length_limit": null,<br>  "label_key_case": null,<br>  "label_order": [],<br>  "label_value_case": null,<br>  "labels_as_tags": [<br>    "unset"<br>  ],<br>  "name": null,<br>  "namespace": null,<br>  "regex_replace_chars": null,<br>  "stage": null,<br>  "tags": {},<br>  "tenant": null<br>}</pre> | no |
 | <a name="input_custom_iam_policy_arns"></a> [custom\_iam\_policy\_arns](#input\_custom\_iam\_policy\_arns) | ARNs of custom policies to be attached to the lambda role | `set(string)` | `[]` | no |
+| <a name="input_dead_letter_config_target_arn"></a> [dead\_letter\_config\_target\_arn](#input\_dead\_letter\_config\_target\_arn) | ARN of an SNS topic or SQS queue to notify when an invocation fails. If this option is used, the function's IAM role <br>  must be granted suitable access to write to the target object, which means allowing either the sns:Publish or <br>  sqs:SendMessage action on this ARN, depending on which service is targeted." | `string` | `null` | no |
 | <a name="input_delimiter"></a> [delimiter](#input\_delimiter) | Delimiter to be used between ID elements.<br>Defaults to `-` (hyphen). Set to `""` to use no delimiter at all. | `string` | `null` | no |
 | <a name="input_description"></a> [description](#input\_description) | Description of what the Lambda Function does. | `string` | `null` | no |
 | <a name="input_descriptor_formats"></a> [descriptor\_formats](#input\_descriptor\_formats) | Describe additional descriptors to be output in the `descriptors` output map.<br>Map of maps. Keys are names of descriptors. Values are maps of the form<br>`{<br>   format = string<br>   labels = list(string)<br>}`<br>(Type is `any` so the map values can later be enhanced to provide additional options.)<br>`format` is a Terraform format string to be passed to the `format()` function.<br>`labels` is a list of labels, in order, to pass to `format()` function.<br>Label values will be normalized before being passed to `format()` so they will be<br>identical to how they appear in `id`.<br>Default is `{}` (`descriptors` output will be empty). | `any` | `{}` | no |

docs/terraform.md

@@ -52,6 +52,7 @@
 | <a name="input_cloudwatch_logs_retention_in_days"></a> [cloudwatch\_logs\_retention\_in\_days](#input\_cloudwatch\_logs\_retention\_in\_days) | Specifies the number of days you want to retain log events in the specified log group. Possible values are: <br>  1, 3, 5, 7, 14, 30, 60, 90, 120, 150, 180, 365, 400, 545, 731, 1827, 3653, and 0. If you select 0, the events in the <br>  log group are always retained and never expire. | `number` | `null` | no |
 | <a name="input_context"></a> [context](#input\_context) | Single object for setting entire context at once.<br>See description of individual variables for details.<br>Leave string and numeric variables as `null` to use default value.<br>Individual variable settings (non-null) override settings in context object,<br>except for attributes, tags, and additional\_tag\_map, which are merged. | `any` | <pre>{<br>  "additional_tag_map": {},<br>  "attributes": [],<br>  "delimiter": null,<br>  "descriptor_formats": {},<br>  "enabled": true,<br>  "environment": null,<br>  "id_length_limit": null,<br>  "label_key_case": null,<br>  "label_order": [],<br>  "label_value_case": null,<br>  "labels_as_tags": [<br>    "unset"<br>  ],<br>  "name": null,<br>  "namespace": null,<br>  "regex_replace_chars": null,<br>  "stage": null,<br>  "tags": {},<br>  "tenant": null<br>}</pre> | no |
 | <a name="input_custom_iam_policy_arns"></a> [custom\_iam\_policy\_arns](#input\_custom\_iam\_policy\_arns) | ARNs of custom policies to be attached to the lambda role | `set(string)` | `[]` | no |
+| <a name="input_dead_letter_config_target_arn"></a> [dead\_letter\_config\_target\_arn](#input\_dead\_letter\_config\_target\_arn) | ARN of an SNS topic or SQS queue to notify when an invocation fails. If this option is used, the function's IAM role <br>  must be granted suitable access to write to the target object, which means allowing either the sns:Publish or <br>  sqs:SendMessage action on this ARN, depending on which service is targeted." | `string` | `null` | no |
 | <a name="input_delimiter"></a> [delimiter](#input\_delimiter) | Delimiter to be used between ID elements.<br>Defaults to `-` (hyphen). Set to `""` to use no delimiter at all. | `string` | `null` | no |
 | <a name="input_description"></a> [description](#input\_description) | Description of what the Lambda Function does. | `string` | `null` | no |
 | <a name="input_descriptor_formats"></a> [descriptor\_formats](#input\_descriptor\_formats) | Describe additional descriptors to be output in the `descriptors` output map.<br>Map of maps. Keys are names of descriptors. Values are maps of the form<br>`{<br>   format = string<br>   labels = list(string)<br>}`<br>(Type is `any` so the map values can later be enhanced to provide additional options.)<br>`format` is a Terraform format string to be passed to the `format()` function.<br>`labels` is a list of labels, in order, to pass to `format()` function.<br>Label values will be normalized before being passed to `format()` so they will be<br>identical to how they appear in `id`.<br>Default is `{}` (`descriptors` output will be empty). | `any` | `{}` | no |

main.tf

@@ -34,6 +34,14 @@ resource "aws_lambda_function" "this" {
   tags                           = var.tags
   timeout                        = var.timeout
 
+  dynamic "dead_letter_config" {
+    for_each = try(length(var.dead_letter_config_target_arn), 0) > 0 ? [true] : []
+
+    content {
+      target_arn = var.dead_letter_config_target_arn
+    }
+  }
+
   dynamic "environment" {
     for_each = var.lambda_environment != null ? [var.lambda_environment] : []
     content {

variables.tf

@@ -245,3 +245,13 @@ variable "custom_iam_policy_arns" {
   description = "ARNs of custom policies to be attached to the lambda role"
   default     = []
 }
+
+variable "dead_letter_config_target_arn" {
+  type        = string
+  description = <<EOF
+  ARN of an SNS topic or SQS queue to notify when an invocation fails. If this option is used, the function's IAM role 
+  must be granted suitable access to write to the target object, which means allowing either the sns:Publish or 
+  sqs:SendMessage action on this ARN, depending on which service is targeted."
+  EOF
+  default     = null
+}