feat: add functionality (#7)

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## Motivation and Context
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## Breaking Changes
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README.md

@@ -1,2 +1,66 @@
 # terraform-aws-flink-cluster-base
 Terraform module which creates a iam role with policies and ecr repositories apps
+
+<!-- BEGINNING OF PRE-COMMIT-TERRAFORM DOCS HOOK -->
+## Requirements
+
+| Name | Version |
+|------|---------|
+| <a name="requirement_terraform"></a> [terraform](#requirement\_terraform) | >= 1.0.0 |
+| <a name="requirement_aws"></a> [aws](#requirement\_aws) | 4.67.0 |
+
+## Providers
+
+| Name | Version |
+|------|---------|
+| <a name="provider_aws"></a> [aws](#provider\_aws) | 4.67.0 |
+
+## Modules
+
+| Name | Source | Version |
+|------|--------|---------|
+| <a name="module_cluster_role"></a> [cluster\_role](#module\_cluster\_role) | terraform-aws-modules/iam/aws//modules/iam-assumable-role-with-oidc | 5.32.0 |
+| <a name="module_cluster_role_policy"></a> [cluster\_role\_policy](#module\_cluster\_role\_policy) | terraform-aws-modules/iam/aws//modules/iam-policy | 5.32.0 |
+| <a name="module_ecr_applications"></a> [ecr\_applications](#module\_ecr\_applications) | cloudposse/ecr/aws | 0.38.0 |
+| <a name="module_this"></a> [this](#module\_this) | justtrackio/label/null | 0.26.0 |
+
+## Resources
+
+| Name | Type |
+|------|------|
+| [aws_eks_cluster.cluster](https://registry.terraform.io/providers/hashicorp/aws/4.67.0/docs/data-sources/eks_cluster) | data source |
+| [aws_iam_policy_document.policy](https://registry.terraform.io/providers/hashicorp/aws/4.67.0/docs/data-sources/iam_policy_document) | data source |
+
+## Inputs
+
+| 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_applications"></a> [applications](#input\_applications) | list of applications to create ecr repositories for | `list(string)` | n/a | yes |
+| <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_aws_account_id"></a> [aws\_account\_id](#input\_aws\_account\_id) | AWS account id | `string` | `null` | no |
+| <a name="input_aws_region"></a> [aws\_region](#input\_aws\_region) | AWS region | `string` | `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_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_enabled"></a> [enabled](#input\_enabled) | Set to false to prevent the module from creating any resources | `bool` | `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_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_kubernetes_namespace"></a> [kubernetes\_namespace](#input\_kubernetes\_namespace) | the kubernetes namespace thats services accounts are allowed to assume the role | `string` | n/a | yes |
+| <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_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_organizational_unit"></a> [organizational\_unit](#input\_organizational\_unit) | Usually used to indicate the AWS organizational unit, e.g. 'prod', 'sdlc' | `string` | `null` | no |
+| <a name="input_policies"></a> [policies](#input\_policies) | policy as json via aws\_iam\_policy\_document data source | `list(string)` | n/a | yes |
+| <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_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_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 |
+
+## Outputs
+
+No outputs.
+<!-- END OF PRE-COMMIT-TERRAFORM DOCS HOOK -->

data.tf

@@ -0,0 +1,3 @@
+data "aws_eks_cluster" "cluster" {
+  name = "${module.this.organizational_unit}-${module.this.stage}"
+}

main.tf

@@ -0,0 +1,61 @@
+locals {
+  policies  = concat([data.aws_iam_policy_document.policy.json], var.policies)
+  role_name = "${module.this.environment}-${var.kubernetes_namespace}-flink-cluster"
+}
+
+data "aws_iam_policy_document" "policy" {
+  statement {
+    actions = [
+      "s3:HeadObject",
+      "s3:PutObject",
+      "s3:GetObject",
+      "s3:ListBucket"
+    ]
+    resources = [
+      "arn:aws:s3:::${module.this.environment}-datalake-${module.this.aws_account_id}-${module.this.aws_region}/flink/${module.this.tenant}/*",
+    ]
+  }
+}
+
+module "cluster_role_policy" {
+  source  = "terraform-aws-modules/iam/aws//modules/iam-policy"
+  version = "5.32.0"
+
+  for_each = { for k, policy in local.policies : k => policy }
+
+  name        = "${module.this.environment}-${var.kubernetes_namespace}-flink-cluster-${each.key}"
+  path        = "/"
+  description = "Policy to allow flink apps access to the required aws resources via role: ${local.role_name}"
+
+  policy = each.value
+}
+
+module "cluster_role" {
+  source  = "terraform-aws-modules/iam/aws//modules/iam-assumable-role-with-oidc"
+  version = "5.32.0"
+
+  create_role = true
+
+  role_name = local.role_name
+
+  provider_url = data.aws_eks_cluster.cluster.identity[0].oidc[0].issuer
+
+  role_policy_arns = [for k, policy in local.policies : module.cluster_role_policy[k].arn]
+
+  oidc_subjects_with_wildcards = ["system:serviceaccount:${var.kubernetes_namespace}:*"]
+}
+
+module "ecr_applications" {
+  for_each = { for app in var.applications : app => app }
+
+  source  = "cloudposse/ecr/aws"
+  version = "0.38.0"
+
+  context   = module.this.context
+  name      = each.key
+  delimiter = "/"
+
+  force_delete        = true
+  max_image_count     = 10
+  scan_images_on_push = false
+}

provider.tf

@@ -0,0 +1,14 @@
+provider "aws" {
+  region = "eu-central-1"
+}
+
+terraform {
+  required_providers {
+    aws = {
+      source  = "hashicorp/aws"
+      version = "4.67.0"
+    }
+  }
+
+  required_version = ">= 1.0.0"
+}

variables.tf

@@ -0,0 +1,14 @@
+variable "kubernetes_namespace" {
+  type        = string
+  description = "the kubernetes namespace thats services accounts are allowed to assume the role"
+}
+
+variable "policies" {
+  type        = list(string)
+  description = "policy as json via aws_iam_policy_document data source"
+}
+
+variable "applications" {
+  type        = list(string)
+  description = "list of applications to create ecr repositories for"
+}