introduce protected_tags_keep_count (#139)

README.md

@@ -184,6 +184,7 @@ Available targets:
 | <a name="input_principals_push_access"></a> [principals\_push\_access](#input\_principals\_push\_access) | Principal ARNs to provide with push access to the ECR | `list(string)` | `[]` | no |
 | <a name="input_principals_readonly_access"></a> [principals\_readonly\_access](#input\_principals\_readonly\_access) | Principal ARNs to provide with readonly access to the ECR | `list(string)` | `[]` | no |
 | <a name="input_protected_tags"></a> [protected\_tags](#input\_protected\_tags) | List of image tags prefixes and wildcards that should not be destroyed. Useful if you tag images with prefixes like `dev`, `staging`, `prod` or wildcards like `*dev`, `*prod`,`*.*.*` | `set(string)` | `[]` | no |
+| <a name="input_protected_tags_keep_count"></a> [protected\_tags\_keep\_count](#input\_protected\_tags\_keep\_count) | Number of Image versions to keep for protected tags | `number` | `999999` | 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_replication_configurations"></a> [replication\_configurations](#input\_replication\_configurations) | Replication configuration for a registry. See [Replication Configuration](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/ecr_replication_configuration#replication-configuration). | <pre>list(object({<br/>    rules = list(object({          # Maximum 10<br/>      destinations = list(object({ # Maximum 25<br/>        region      = string<br/>        registry_id = string<br/>      }))<br/>      repository_filters = list(object({<br/>        filter      = string<br/>        filter_type = string<br/>      }))<br/>    }))<br/>  }))</pre> | `[]` | no |
 | <a name="input_scan_images_on_push"></a> [scan\_images\_on\_push](#input\_scan\_images\_on\_push) | Indicates whether images are scanned after being pushed to the repository (true) or not (false) | `bool` | `true` | no |

docs/terraform.md

@@ -42,25 +42,25 @@
 
 | Name | Description | Type | Default | Required |
 |------|-------------|------|---------|:--------:|
-| <a name="input_additional_tag_map"></a> [additional\_tag\_map](#input\_additional\_tag\_map) | Additional key-value pairs to add to each map in `tags_as_list_of_maps`. Not added to `tags` or `id`.<br>This is for some rare cases where resources want additional configuration of tags<br>and therefore take a list of maps with tag key, value, and additional configuration. | `map(string)` | `{}` | no |
-| <a name="input_attributes"></a> [attributes](#input\_attributes) | ID element. Additional attributes (e.g. `workers` or `cluster`) to add to `id`,<br>in the order they appear in the list. New attributes are appended to the<br>end of the list. The elements of the list are joined by the `delimiter`<br>and treated as a single ID element. | `list(string)` | `[]` | 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_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_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 |
+| <a name="input_additional_tag_map"></a> [additional\_tag\_map](#input\_additional\_tag\_map) | Additional key-value pairs to add to each map in `tags_as_list_of_maps`. Not added to `tags` or `id`.<br/>This is for some rare cases where resources want additional configuration of tags<br/>and therefore take a list of maps with tag key, value, and additional configuration. | `map(string)` | `{}` | no |
+| <a name="input_attributes"></a> [attributes](#input\_attributes) | ID element. Additional attributes (e.g. `workers` or `cluster`) to add to `id`,<br/>in the order they appear in the list. New attributes are appended to the<br/>end of the list. The elements of the list are joined by the `delimiter`<br/>and treated as a single ID element. | `list(string)` | `[]` | 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_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_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 |
 | <a name="input_enable_lifecycle_policy"></a> [enable\_lifecycle\_policy](#input\_enable\_lifecycle\_policy) | Set to false to prevent the module from adding any lifecycle policies to any repositories | `bool` | `true` | no |
 | <a name="input_enabled"></a> [enabled](#input\_enabled) | Set to false to prevent the module from creating any resources | `bool` | `null` | no |
-| <a name="input_encryption_configuration"></a> [encryption\_configuration](#input\_encryption\_configuration) | ECR encryption configuration | <pre>object({<br>    encryption_type = string<br>    kms_key         = any<br>  })</pre> | `null` | no |
+| <a name="input_encryption_configuration"></a> [encryption\_configuration](#input\_encryption\_configuration) | ECR encryption configuration | <pre>object({<br/>    encryption_type = string<br/>    kms_key         = any<br/>  })</pre> | `null` | no |
 | <a name="input_environment"></a> [environment](#input\_environment) | ID element. Usually used for region e.g. 'uw2', 'us-west-2', OR role 'prod', 'staging', 'dev', 'UAT' | `string` | `null` | no |
 | <a name="input_force_delete"></a> [force\_delete](#input\_force\_delete) | Whether to delete the repository even if it contains images | `bool` | `false` | no |
-| <a name="input_id_length_limit"></a> [id\_length\_limit](#input\_id\_length\_limit) | Limit `id` to this many characters (minimum 6).<br>Set to `0` for unlimited length.<br>Set to `null` for keep the existing setting, which defaults to `0`.<br>Does not affect `id_full`. | `number` | `null` | no |
+| <a name="input_id_length_limit"></a> [id\_length\_limit](#input\_id\_length\_limit) | Limit `id` to this many characters (minimum 6).<br/>Set to `0` for unlimited length.<br/>Set to `null` for keep the existing setting, which defaults to `0`.<br/>Does not affect `id_full`. | `number` | `null` | no |
 | <a name="input_image_names"></a> [image\_names](#input\_image\_names) | List of Docker local image names, used as repository names for AWS ECR | `list(string)` | `[]` | no |
 | <a name="input_image_tag_mutability"></a> [image\_tag\_mutability](#input\_image\_tag\_mutability) | The tag mutability setting for the repository. Must be one of: `MUTABLE` or `IMMUTABLE` | `string` | `"IMMUTABLE"` | no |
-| <a name="input_label_key_case"></a> [label\_key\_case](#input\_label\_key\_case) | Controls the letter case of the `tags` keys (label names) for tags generated by this module.<br>Does not affect keys of tags passed in via the `tags` input.<br>Possible values: `lower`, `title`, `upper`.<br>Default value: `title`. | `string` | `null` | no |
-| <a name="input_label_order"></a> [label\_order](#input\_label\_order) | The order in which the labels (ID elements) appear in the `id`.<br>Defaults to ["namespace", "environment", "stage", "name", "attributes"].<br>You can omit any of the 6 labels ("tenant" is the 6th), but at least one must be present. | `list(string)` | `null` | no |
-| <a name="input_label_value_case"></a> [label\_value\_case](#input\_label\_value\_case) | Controls the letter case of ID elements (labels) as included in `id`,<br>set as tag values, and output by this module individually.<br>Does not affect values of tags passed in via the `tags` input.<br>Possible values: `lower`, `title`, `upper` and `none` (no transformation).<br>Set this to `title` and set `delimiter` to `""` to yield Pascal Case IDs.<br>Default value: `lower`. | `string` | `null` | no |
-| <a name="input_labels_as_tags"></a> [labels\_as\_tags](#input\_labels\_as\_tags) | Set of labels (ID elements) to include as tags in the `tags` output.<br>Default is to include all labels.<br>Tags with empty values will not be included in the `tags` output.<br>Set to `[]` to suppress all generated tags.<br>**Notes:**<br>  The value of the `name` tag, if included, will be the `id`, not the `name`.<br>  Unlike other `null-label` inputs, the initial setting of `labels_as_tags` cannot be<br>  changed in later chained modules. Attempts to change it will be silently ignored. | `set(string)` | <pre>[<br>  "default"<br>]</pre> | no |
-| <a name="input_max_image_count"></a> [max\_image\_count](#input\_max\_image\_count) | How many Docker Image versions AWS ECR will store. Only used when [count\_based\_rotation](#count\_based\_rotation) is true | `number` | `500` | no |
-| <a name="input_name"></a> [name](#input\_name) | ID element. Usually the component or solution name, e.g. 'app' or 'jenkins'.<br>This is the only ID element not also included as a `tag`.<br>The "name" tag is set to the full `id` string. There is no tag with the value of the `name` input. | `string` | `null` | no |
+| <a name="input_label_key_case"></a> [label\_key\_case](#input\_label\_key\_case) | Controls the letter case of the `tags` keys (label names) for tags generated by this module.<br/>Does not affect keys of tags passed in via the `tags` input.<br/>Possible values: `lower`, `title`, `upper`.<br/>Default value: `title`. | `string` | `null` | no |
+| <a name="input_label_order"></a> [label\_order](#input\_label\_order) | The order in which the labels (ID elements) appear in the `id`.<br/>Defaults to ["namespace", "environment", "stage", "name", "attributes"].<br/>You can omit any of the 6 labels ("tenant" is the 6th), but at least one must be present. | `list(string)` | `null` | no |
+| <a name="input_label_value_case"></a> [label\_value\_case](#input\_label\_value\_case) | Controls the letter case of ID elements (labels) as included in `id`,<br/>set as tag values, and output by this module individually.<br/>Does not affect values of tags passed in via the `tags` input.<br/>Possible values: `lower`, `title`, `upper` and `none` (no transformation).<br/>Set this to `title` and set `delimiter` to `""` to yield Pascal Case IDs.<br/>Default value: `lower`. | `string` | `null` | no |
+| <a name="input_labels_as_tags"></a> [labels\_as\_tags](#input\_labels\_as\_tags) | Set of labels (ID elements) to include as tags in the `tags` output.<br/>Default is to include all labels.<br/>Tags with empty values will not be included in the `tags` output.<br/>Set to `[]` to suppress all generated tags.<br/>**Notes:**<br/>  The value of the `name` tag, if included, will be the `id`, not the `name`.<br/>  Unlike other `null-label` inputs, the initial setting of `labels_as_tags` cannot be<br/>  changed in later chained modules. Attempts to change it will be silently ignored. | `set(string)` | <pre>[<br/>  "default"<br/>]</pre> | no |
+| <a name="input_max_image_count"></a> [max\_image\_count](#input\_max\_image\_count) | How many Docker Image versions AWS ECR will store | `number` | `500` | no |
+| <a name="input_name"></a> [name](#input\_name) | ID element. Usually the component or solution name, e.g. 'app' or 'jenkins'.<br/>This is the only ID element not also included as a `tag`.<br/>The "name" tag is set to the full `id` string. There is no tag with the value of the `name` input. | `string` | `null` | no |
 | <a name="input_namespace"></a> [namespace](#input\_namespace) | ID element. Usually an abbreviation of your organization name, e.g. 'eg' or 'cp', to help ensure generated IDs are globally unique | `string` | `null` | no |
 | <a name="input_organizations_full_access"></a> [organizations\_full\_access](#input\_organizations\_full\_access) | Organization IDs to provide with full access to the ECR. | `list(string)` | `[]` | no |
 | <a name="input_organizations_push_access"></a> [organizations\_push\_access](#input\_organizations\_push\_access) | Organization IDs to provide with push access to the ECR | `list(string)` | `[]` | no |
@@ -71,14 +71,15 @@
 | <a name="input_principals_pull_though_access"></a> [principals\_pull\_though\_access](#input\_principals\_pull\_though\_access) | Principal ARNs to provide with pull though access to the ECR | `list(string)` | `[]` | no |
 | <a name="input_principals_push_access"></a> [principals\_push\_access](#input\_principals\_push\_access) | Principal ARNs to provide with push access to the ECR | `list(string)` | `[]` | no |
 | <a name="input_principals_readonly_access"></a> [principals\_readonly\_access](#input\_principals\_readonly\_access) | Principal ARNs to provide with readonly access to the ECR | `list(string)` | `[]` | no |
-| <a name="input_protected_tags"></a> [protected\_tags](#input\_protected\_tags) | Name of image tags prefixes that should not be destroyed. Useful if you tag images with names like `dev`, `staging`, and `prod` | `set(string)` | `[]` | 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_replication_configurations"></a> [replication\_configurations](#input\_replication\_configurations) | Replication configuration for a registry. See [Replication Configuration](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/ecr_replication_configuration#replication-configuration). | <pre>list(object({<br>    rules = list(object({          # Maximum 10<br>      destinations = list(object({ # Maximum 25<br>        region      = string<br>        registry_id = string<br>      }))<br>      repository_filters = list(object({<br>        filter      = string<br>        filter_type = string<br>      }))<br>    }))<br>  }))</pre> | `[]` | no |
+| <a name="input_protected_tags"></a> [protected\_tags](#input\_protected\_tags) | List of image tags prefixes and wildcards that should not be destroyed. Useful if you tag images with prefixes like `dev`, `staging`, `prod` or wildcards like `*dev`, `*prod`,`*.*.*` | `set(string)` | `[]` | no |
+| <a name="input_protected_tags_keep_count"></a> [protected\_tags\_keep\_count](#input\_protected\_tags\_keep\_count) | Number of Image versions to keep for protected tags | `number` | `999999` | 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_replication_configurations"></a> [replication\_configurations](#input\_replication\_configurations) | Replication configuration for a registry. See [Replication Configuration](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/ecr_replication_configuration#replication-configuration). | <pre>list(object({<br/>    rules = list(object({          # Maximum 10<br/>      destinations = list(object({ # Maximum 25<br/>        region      = string<br/>        registry_id = string<br/>      }))<br/>      repository_filters = list(object({<br/>        filter      = string<br/>        filter_type = string<br/>      }))<br/>    }))<br/>  }))</pre> | `[]` | no |
 | <a name="input_scan_images_on_push"></a> [scan\_images\_on\_push](#input\_scan\_images\_on\_push) | Indicates whether images are scanned after being pushed to the repository (true) or not (false) | `bool` | `true` | no |
 | <a name="input_stage"></a> [stage](#input\_stage) | ID element. Usually used to indicate role, e.g. 'prod', 'staging', 'source', 'build', 'test', 'deploy', 'release' | `string` | `null` | no |
-| <a name="input_tags"></a> [tags](#input\_tags) | Additional tags (e.g. `{'BusinessUnit': 'XYZ'}`).<br>Neither the tag keys nor the tag values will be modified by this module. | `map(string)` | `{}` | no |
+| <a name="input_tags"></a> [tags](#input\_tags) | Additional tags (e.g. `{'BusinessUnit': 'XYZ'}`).<br/>Neither the tag keys nor the tag values will be modified by this module. | `map(string)` | `{}` | no |
 | <a name="input_tenant"></a> [tenant](#input\_tenant) | ID element \_(Rarely used, not included by default)\_. A customer identifier, indicating who this instance of a resource is for | `string` | `null` | no |
-| <a name="input_time_based_rotation"></a> [time\_based\_rotation](#time\_based\_rotation) | Set to true to filter image based on the `sinceImagePushed` count type. [max\_image\_count](#input\_max\_image\_count) coresponds to number of days before expiration | `bool` | `false` | no |
+| <a name="input_time_based_rotation"></a> [time\_based\_rotation](#input\_time\_based\_rotation) | Set to true to filter image based on the `sinceImagePushed` count type. | `bool` | `false` | no |
 | <a name="input_use_fullname"></a> [use\_fullname](#input\_use\_fullname) | Set 'true' to use `namespace-stage-name` for ecr repository name, else `name` | `bool` | `true` | no |
 
 ## Outputs