Allow to use ECR replication (#103)

* chore: enable ecr replication * Auto Format * fix: variable type and count * fix: small fixes * fix: readme * support dynamic configurations instead of dynamic rules * new readme * fix lint --------- Co-authored-by: cloudpossebot <11232728+cloudpossebot@users.noreply.github.com> Co-authored-by: Matt Gowie <gowie.matt@gmail.com> Co-authored-by: Kevin Mahoney <kevin@icecube.dog> Co-authored-by: Kevin Mahoney <belay.00.theorem@icloud.com>
cloudposse · Mar 7, 2024 · 6570c59 · 6570c59
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diff --git a/README.md b/README.md
@@ -142,6 +142,7 @@ Available targets:
 | Name | Type |
 |------|------|
 | [aws_ecr_lifecycle_policy.name](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/ecr_lifecycle_policy) | resource |
+| [aws_ecr_replication_configuration.replication_configuration](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/ecr_replication_configuration) | resource |
 | [aws_ecr_repository.name](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/ecr_repository) | resource |
 | [aws_ecr_repository_policy.name](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/ecr_repository_policy) | resource |
 | [aws_iam_policy_document.empty](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/data-sources/iam_policy_document) | data source |
@@ -191,6 +192,7 @@ Available targets:
 | <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_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 |

diff --git a/docs/terraform.md b/docs/terraform.md
@@ -23,6 +23,7 @@
 | Name | Type |
 |------|------|
 | [aws_ecr_lifecycle_policy.name](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/ecr_lifecycle_policy) | resource |
+| [aws_ecr_replication_configuration.replication_configuration](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/ecr_replication_configuration) | resource |
 | [aws_ecr_repository.name](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/ecr_repository) | resource |
 | [aws_ecr_repository_policy.name](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/ecr_repository_policy) | resource |
 | [aws_iam_policy_document.empty](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/data-sources/iam_policy_document) | data source |
@@ -72,6 +73,7 @@
 | <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_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 |

diff --git a/examples/replication-repo/main.tf b/examples/replication-repo/main.tf
@@ -0,0 +1,39 @@
+provider "aws" {
+  region = "us-east-2"
+}
+
+data "aws_caller_identity" "current" {}
+
+module "ecr" {
+  source       = "../../"
+  namespace    = "eg"
+  stage        = "dev"
+  name         = "app"
+  use_fullname = false
+  image_names  = ["redis"]
+
+  replication_configurations = [
+    {
+      rules = [
+        {
+          destinations = [
+            {
+              region      = "us-east-1"
+              registry_id = data.aws_caller_identity.current.account_id
+            },
+            {
+              region      = "eu-west-1"
+              registry_id = data.aws_caller_identity.current.account_id
+            }
+          ]
+          repository_filters = [
+            {
+              filter      = "redis"
+              filter_type = "PREFIX_MATCH"
+            }
+          ]
+        }
+      ]
+    }
+  ]
+}
diff --git a/examples/replication-repo/outputs.tf b/examples/replication-repo/outputs.tf
@@ -0,0 +1,9 @@
+output "repository_id_map" {
+  value       = module.ecr.repository_arn_map
+  description = "Repository id map"
+}
+
+output "repository_url_map" {
+  value       = module.ecr.repository_url_map
+  description = "Repository url map"
+}
diff --git a/examples/replication-repo/versions.tf b/examples/replication-repo/versions.tf
@@ -0,0 +1,9 @@
+terraform {
+  required_version = ">= 1.3"
+  required_providers {
+    aws = {
+      source  = "hashicorp/aws"
+      version = ">= 4.22.0"
+    }
+  }
+}
diff --git a/main.tf b/main.tf
@@ -342,3 +342,31 @@ resource "aws_ecr_repository_policy" "name" {
   repository = aws_ecr_repository.name[each.value].name
   policy     = data.aws_iam_policy_document.resource[each.value].json
 }
+
+resource "aws_ecr_replication_configuration" "replication_configuration" {
+  count = module.this.enabled && length(var.replication_configurations) > 0 ? 1 : 0
+  dynamic "replication_configuration" {
+    for_each = var.replication_configurations
+    content {
+      dynamic "rule" {
+        for_each = replication_configuration.value.rules
+        content {
+          dynamic "destination" {
+            for_each = rule.value.destinations
+            content {
+              region      = destination.value.region
+              registry_id = destination.value.registry_id
+            }
+          }
+          dynamic "repository_filter" {
+            for_each = rule.value.repository_filters
+            content {
+              filter      = repository_filter.value.filter
+              filter_type = repository_filter.value.filter_type
+            }
+          }
+        }
+      }
+    }
+  }
+}
diff --git a/variables.tf b/variables.tf
@@ -84,6 +84,24 @@ variable "force_delete" {
   description = "Whether to delete the repository even if it contains images"
   default     = false
 }
+
+variable "replication_configurations" {
+  description = "Replication configuration for a registry. See [Replication Configuration](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/ecr_replication_configuration#replication-configuration)."
+  type = list(object({
+    rules = list(object({          # Maximum 10
+      destinations = list(object({ # Maximum 25
+        region      = string
+        registry_id = string
+      }))
+      repository_filters = list(object({
+        filter      = string
+        filter_type = string
+      }))
+    }))
+  }))
+  default = []
+}
+
 variable "organizations_readonly_access" {
   type        = list(string)
   description = "Organization IDs to provide with readonly access to the ECR."