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Serverless support (#132)
* Support for serverless clusters * Support for serverless clusters * Fixed indentation * Moved variable validation to lifecycle precondition * fix formatting --------- Co-authored-by: Ben <[email protected]>
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README.md

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@@ -92,15 +92,15 @@ module "documentdb_cluster" {
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| Name | Version |
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|------|---------|
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| <a name="requirement_terraform"></a> [terraform](#requirement\_terraform) | >= 1.3 |
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| <a name="requirement_aws"></a> [aws](#requirement\_aws) | >= 5.29.0 |
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| <a name="requirement_aws"></a> [aws](#requirement\_aws) | >= 6.8.0 |
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| <a name="requirement_local"></a> [local](#requirement\_local) | >= 1.3 |
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| <a name="requirement_random"></a> [random](#requirement\_random) | >= 1.0 |
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## Providers
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| Name | Version |
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|------|---------|
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| <a name="provider_aws"></a> [aws](#provider\_aws) | >= 5.29.0 |
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| <a name="provider_aws"></a> [aws](#provider\_aws) | >= 6.8.0 |
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| <a name="provider_random"></a> [random](#provider\_random) | >= 1.0 |
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## Modules
@@ -177,6 +177,7 @@ module "documentdb_cluster" {
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| <a name="input_reader_dns_name"></a> [reader\_dns\_name](#input\_reader\_dns\_name) | Name of the reader endpoint CNAME record to create in the parent DNS zone specified by `zone_id`. If left empty, the name will be auto-asigned using the format `replicas.var.name` | `string` | `""` | no |
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| <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 |
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| <a name="input_retention_period"></a> [retention\_period](#input\_retention\_period) | Number of days to retain backups for | `number` | `5` | no |
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| <a name="input_serverless_v2_scaling_configuration"></a> [serverless\_v2\_scaling\_configuration](#input\_serverless\_v2\_scaling\_configuration) | Configuration for serverless v2 scaling. See https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/docdb_cluster#serverless_v2_scaling_configuration | <pre>object({<br/> min_capacity = optional(number, 0.5)<br/> max_capacity = optional(number, 256)<br/> })</pre> | `null` | no |
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| <a name="input_skip_final_snapshot"></a> [skip\_final\_snapshot](#input\_skip\_final\_snapshot) | Determines whether a final DB snapshot is created before the DB cluster is deleted | `bool` | `true` | no |
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| <a name="input_snapshot_identifier"></a> [snapshot\_identifier](#input\_snapshot\_identifier) | Specifies whether or not to create this cluster from a snapshot. You can use either the name or ARN when specifying a DB cluster snapshot, or the ARN when specifying a DB snapshot | `string` | `""` | no |
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| <a name="input_ssm_parameter_enabled"></a> [ssm\_parameter\_enabled](#input\_ssm\_parameter\_enabled) | Whether an SSM parameter store value is created to store the database password. | `bool` | `false` | no |

examples/complete/versions.tf

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required_providers {
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aws = {
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source = "hashicorp/aws"
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version = ">= 5.21.0"
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version = ">= 6.8.0"
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}
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local = {
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source = "hashicorp/local"

examples/serverless/context.tf

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#
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# ONLY EDIT THIS FILE IN github.com/cloudposse/terraform-null-label
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# All other instances of this file should be a copy of that one
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#
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#
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# Copy this file from https://github.com/cloudposse/terraform-null-label/blob/master/exports/context.tf
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# and then place it in your Terraform module to automatically get
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# Cloud Posse's standard configuration inputs suitable for passing
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# to Cloud Posse modules.
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#
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# curl -sL https://raw.githubusercontent.com/cloudposse/terraform-null-label/master/exports/context.tf -o context.tf
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#
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# Modules should access the whole context as `module.this.context`
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# to get the input variables with nulls for defaults,
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# for example `context = module.this.context`,
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# and access individual variables as `module.this.<var>`,
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# with final values filled in.
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#
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# For example, when using defaults, `module.this.context.delimiter`
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# will be null, and `module.this.delimiter` will be `-` (hyphen).
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#
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module "this" {
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source = "cloudposse/label/null"
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version = "0.25.0" # requires Terraform >= 0.13.0
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enabled = var.enabled
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namespace = var.namespace
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tenant = var.tenant
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environment = var.environment
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stage = var.stage
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name = var.name
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delimiter = var.delimiter
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attributes = var.attributes
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tags = var.tags
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additional_tag_map = var.additional_tag_map
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label_order = var.label_order
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regex_replace_chars = var.regex_replace_chars
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id_length_limit = var.id_length_limit
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label_key_case = var.label_key_case
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label_value_case = var.label_value_case
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descriptor_formats = var.descriptor_formats
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labels_as_tags = var.labels_as_tags
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context = var.context
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}
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# Copy contents of cloudposse/terraform-null-label/variables.tf here
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variable "context" {
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type = any
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default = {
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enabled = true
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namespace = null
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tenant = null
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environment = null
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stage = null
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name = null
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delimiter = null
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attributes = []
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tags = {}
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additional_tag_map = {}
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regex_replace_chars = null
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label_order = []
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id_length_limit = null
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label_key_case = null
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label_value_case = null
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descriptor_formats = {}
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# Note: we have to use [] instead of null for unset lists due to
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# https://github.com/hashicorp/terraform/issues/28137
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# which was not fixed until Terraform 1.0.0,
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# but we want the default to be all the labels in `label_order`
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# and we want users to be able to prevent all tag generation
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# by setting `labels_as_tags` to `[]`, so we need
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# a different sentinel to indicate "default"
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labels_as_tags = ["unset"]
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}
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description = <<-EOT
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Single object for setting entire context at once.
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See description of individual variables for details.
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Leave string and numeric variables as `null` to use default value.
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Individual variable settings (non-null) override settings in context object,
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except for attributes, tags, and additional_tag_map, which are merged.
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EOT
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validation {
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condition = lookup(var.context, "label_key_case", null) == null ? true : contains(["lower", "title", "upper"], var.context["label_key_case"])
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error_message = "Allowed values: `lower`, `title`, `upper`."
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}
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validation {
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condition = lookup(var.context, "label_value_case", null) == null ? true : contains(["lower", "title", "upper", "none"], var.context["label_value_case"])
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error_message = "Allowed values: `lower`, `title`, `upper`, `none`."
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}
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}
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variable "enabled" {
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type = bool
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default = null
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description = "Set to false to prevent the module from creating any resources"
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}
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variable "namespace" {
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type = string
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default = null
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description = "ID element. Usually an abbreviation of your organization name, e.g. 'eg' or 'cp', to help ensure generated IDs are globally unique"
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}
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variable "tenant" {
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type = string
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default = null
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description = "ID element _(Rarely used, not included by default)_. A customer identifier, indicating who this instance of a resource is for"
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}
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variable "environment" {
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type = string
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default = null
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description = "ID element. Usually used for region e.g. 'uw2', 'us-west-2', OR role 'prod', 'staging', 'dev', 'UAT'"
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}
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variable "stage" {
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type = string
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default = null
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description = "ID element. Usually used to indicate role, e.g. 'prod', 'staging', 'source', 'build', 'test', 'deploy', 'release'"
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}
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variable "name" {
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type = string
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default = null
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description = <<-EOT
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ID element. Usually the component or solution name, e.g. 'app' or 'jenkins'.
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This is the only ID element not also included as a `tag`.
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The "name" tag is set to the full `id` string. There is no tag with the value of the `name` input.
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EOT
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}
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variable "delimiter" {
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type = string
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default = null
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description = <<-EOT
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Delimiter to be used between ID elements.
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Defaults to `-` (hyphen). Set to `""` to use no delimiter at all.
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EOT
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}
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variable "attributes" {
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type = list(string)
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default = []
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description = <<-EOT
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ID element. Additional attributes (e.g. `workers` or `cluster`) to add to `id`,
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in the order they appear in the list. New attributes are appended to the
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end of the list. The elements of the list are joined by the `delimiter`
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and treated as a single ID element.
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EOT
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}
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variable "labels_as_tags" {
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type = set(string)
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default = ["default"]
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description = <<-EOT
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Set of labels (ID elements) to include as tags in the `tags` output.
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Default is to include all labels.
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Tags with empty values will not be included in the `tags` output.
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Set to `[]` to suppress all generated tags.
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**Notes:**
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The value of the `name` tag, if included, will be the `id`, not the `name`.
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Unlike other `null-label` inputs, the initial setting of `labels_as_tags` cannot be
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changed in later chained modules. Attempts to change it will be silently ignored.
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EOT
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}
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variable "tags" {
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type = map(string)
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default = {}
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description = <<-EOT
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Additional tags (e.g. `{'BusinessUnit': 'XYZ'}`).
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Neither the tag keys nor the tag values will be modified by this module.
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EOT
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}
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variable "additional_tag_map" {
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type = map(string)
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default = {}
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description = <<-EOT
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Additional key-value pairs to add to each map in `tags_as_list_of_maps`. Not added to `tags` or `id`.
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This is for some rare cases where resources want additional configuration of tags
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and therefore take a list of maps with tag key, value, and additional configuration.
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EOT
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}
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variable "label_order" {
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type = list(string)
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default = null
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description = <<-EOT
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The order in which the labels (ID elements) appear in the `id`.
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Defaults to ["namespace", "environment", "stage", "name", "attributes"].
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You can omit any of the 6 labels ("tenant" is the 6th), but at least one must be present.
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EOT
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}
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variable "regex_replace_chars" {
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type = string
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default = null
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description = <<-EOT
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Terraform regular expression (regex) string.
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Characters matching the regex will be removed from the ID elements.
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If not set, `"/[^a-zA-Z0-9-]/"` is used to remove all characters other than hyphens, letters and digits.
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EOT
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}
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variable "id_length_limit" {
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type = number
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default = null
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description = <<-EOT
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Limit `id` to this many characters (minimum 6).
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Set to `0` for unlimited length.
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Set to `null` for keep the existing setting, which defaults to `0`.
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Does not affect `id_full`.
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EOT
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validation {
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condition = var.id_length_limit == null ? true : var.id_length_limit >= 6 || var.id_length_limit == 0
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error_message = "The id_length_limit must be >= 6 if supplied (not null), or 0 for unlimited length."
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}
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}
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variable "label_key_case" {
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type = string
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default = null
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description = <<-EOT
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Controls the letter case of the `tags` keys (label names) for tags generated by this module.
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Does not affect keys of tags passed in via the `tags` input.
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Possible values: `lower`, `title`, `upper`.
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Default value: `title`.
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EOT
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validation {
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condition = var.label_key_case == null ? true : contains(["lower", "title", "upper"], var.label_key_case)
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error_message = "Allowed values: `lower`, `title`, `upper`."
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}
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}
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variable "label_value_case" {
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type = string
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default = null
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description = <<-EOT
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Controls the letter case of ID elements (labels) as included in `id`,
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set as tag values, and output by this module individually.
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Does not affect values of tags passed in via the `tags` input.
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Possible values: `lower`, `title`, `upper` and `none` (no transformation).
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Set this to `title` and set `delimiter` to `""` to yield Pascal Case IDs.
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Default value: `lower`.
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EOT
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validation {
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condition = var.label_value_case == null ? true : contains(["lower", "title", "upper", "none"], var.label_value_case)
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error_message = "Allowed values: `lower`, `title`, `upper`, `none`."
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}
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}
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variable "descriptor_formats" {
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type = any
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default = {}
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description = <<-EOT
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Describe additional descriptors to be output in the `descriptors` output map.
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Map of maps. Keys are names of descriptors. Values are maps of the form
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`{
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format = string
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labels = list(string)
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}`
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(Type is `any` so the map values can later be enhanced to provide additional options.)
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`format` is a Terraform format string to be passed to the `format()` function.
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`labels` is a list of labels, in order, to pass to `format()` function.
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Label values will be normalized before being passed to `format()` so they will be
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identical to how they appear in `id`.
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Default is `{}` (`descriptors` output will be empty).
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EOT
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}
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#### End of copy of cloudposse/terraform-null-label/variables.tf
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region = "us-east-2"
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availability_zones = ["us-east-2a", "us-east-2b"]
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namespace = "eg"
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stage = "test"
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name = "documentdb-cluster"
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vpc_cidr_block = "172.16.0.0/16"
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instance_class = "db.serverless"
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cluster_size = 1
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db_port = 27017
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master_username = "admin1"
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master_password = "password1"
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retention_period = 5
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preferred_backup_window = "07:00-09:00"
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cluster_family = "docdb5.0"
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engine_version = "5.0.0"
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engine = "docdb"
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storage_encrypted = true
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storage_type = "standard"
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skip_final_snapshot = true
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apply_immediately = true
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ssm_parameter_enabled = true
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serverless_v2_scaling_configuration = {
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min_capacity = 0.5
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max_capacity = 2
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}

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