{"id":19722785,"url":"https://github.com/cloudposse/terraform-aws-transit-gateway","last_synced_at":"2025-10-06T21:10:10.487Z","repository":{"id":37809526,"uuid":"280022596","full_name":"cloudposse/terraform-aws-transit-gateway","owner":"cloudposse","description":"Terraform module to provision AWS Transit Gateway, AWS Resource Access Manager (AWS RAM) Resource, and share the Transit Gateway with the Organization or another AWS Account.","archived":false,"fork":false,"pushed_at":"2025-01-01T03:14:16.000Z","size":4385,"stargazers_count":58,"open_issues_count":11,"forks_count":54,"subscribers_count":15,"default_branch":"main","last_synced_at":"2025-03-29T19:01:42.747Z","etag":null,"topics":["aws","terraform-modules","transit-gateway","vpc-attachment"],"latest_commit_sha":null,"homepage":"https://cloudposse.com/accelerate","language":"HCL","has_issues":true,"has_wiki":null,"has_pages":null,"mirror_url":null,"source_name":null,"license":"apache-2.0","status":null,"scm":"git","pull_requests_enabled":true,"icon_url":"https://github.com/cloudposse.png","metadata":{"funding":{"github":"cloudposse"},"files":{"readme":"README.md","changelog":null,"contributing":null,"funding":null,"license":"LICENSE","code_of_conduct":null,"threat_model":null,"audit":null,"citation":null,"codeowners":".github/CODEOWNERS","security":null,"support":null,"governance":null,"roadmap":null,"authors":null,"dei":null,"publiccode":null,"codemeta":null}},"created_at":"2020-07-16T01:33:36.000Z","updated_at":"2025-03-27T13:11:10.000Z","dependencies_parsed_at":"2024-04-01T20:27:21.060Z","dependency_job_id":"e768db12-bad0-4124-aa9a-4f20bbf631f8","html_url":"https://github.com/cloudposse/terraform-aws-transit-gateway","commit_stats":null,"previous_names":[],"tags_count":21,"template":false,"template_full_name":"cloudposse/terraform-example-module","repository_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/cloudposse%2Fterraform-aws-transit-gateway","tags_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/cloudposse%2Fterraform-aws-transit-gateway/tags","releases_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/cloudposse%2Fterraform-aws-transit-gateway/releases","manifests_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/cloudposse%2Fterraform-aws-transit-gateway/manifests","owner_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners/cloudposse","download_url":"https://codeload.github.com/cloudposse/terraform-aws-transit-gateway/tar.gz/refs/heads/main","host":{"name":"GitHub","url":"https://github.com","kind":"github","repositories_count":247393551,"owners_count":20931811,"icon_url":"https://github.com/github.png","version":null,"created_at":"2022-05-30T11:31:42.601Z","updated_at":"2022-07-04T15:15:14.044Z","host_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub","repositories_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories","repository_names_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repository_names","owners_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners"}},"keywords":["aws","terraform-modules","transit-gateway","vpc-attachment"],"created_at":"2024-11-11T23:18:30.922Z","updated_at":"2025-10-06T21:10:10.466Z","avatar_url":"https://github.com/cloudposse.png","language":"HCL","funding_links":["https://github.com/sponsors/cloudposse"],"categories":[],"sub_categories":[],"readme":"\n\n\u003c!-- markdownlint-disable --\u003e\n\u003ca href=\"https://cpco.io/homepage\"\u003e\u003cimg src=\"https://github.com/cloudposse/terraform-aws-transit-gateway/blob/main/.github/banner.png?raw=true\" alt=\"Project Banner\"/\u003e\u003c/a\u003e\u003cbr/\u003e\n\n\n\u003cp align=\"right\"\u003e\u003ca href=\"https://github.com/cloudposse/terraform-aws-transit-gateway/releases/latest\"\u003e\u003cimg src=\"https://img.shields.io/github/release/cloudposse/terraform-aws-transit-gateway.svg?style=for-the-badge\" alt=\"Latest Release\"/\u003e\u003c/a\u003e\u003ca href=\"https://github.com/cloudposse/terraform-aws-transit-gateway/commits\"\u003e\u003cimg src=\"https://img.shields.io/github/last-commit/cloudposse/terraform-aws-transit-gateway.svg?style=for-the-badge\" alt=\"Last Updated\"/\u003e\u003c/a\u003e\u003ca href=\"https://cloudposse.com/slack\"\u003e\u003cimg src=\"https://slack.cloudposse.com/for-the-badge.svg\" alt=\"Slack Community\"/\u003e\u003c/a\u003e\u003ca href=\"https://cloudposse.com/support/\"\u003e\u003cimg src=\"https://img.shields.io/badge/Get_Support-success.svg?style=for-the-badge\" alt=\"Get Support\"/\u003e\u003c/a\u003e\n\n\u003c/p\u003e\n\u003c!-- markdownlint-restore --\u003e\n\n\u003c!--\n\n\n\n\n  ** DO NOT EDIT THIS FILE\n  **\n  ** This file was automatically generated by the `cloudposse/build-harness`.\n  ** 1) Make all changes to `README.yaml`\n  ** 2) Run `make init` (you only need to do this once)\n  ** 3) Run`make readme` to rebuild this file.\n  **\n  ** (We maintain HUNDREDS of open source projects. This is how we maintain our sanity.)\n  **\n\n\n\n\n\n--\u003e\n\nTerraform module to provision:\n\n- [AWS Transit Gateway](https://aws.amazon.com/transit-gateway/)\n- [AWS Resource Access Manager (AWS RAM)](https://docs.aws.amazon.com/ram/latest/userguide/what-is.html) Resource Share to share the Transit Gateway with\n  the Organization or another AWS Account (configurable via the variables `ram_resource_share_enabled` and `ram_principals`)\n- [Transit Gateway route table](https://docs.aws.amazon.com/vpc/latest/tgw/tgw-route-tables.html)\n- [Transit Gateway VPC attachments](https://docs.aws.amazon.com/vpc/latest/tgw/tgw-vpc-attachments.html) to connect multiple VPCs via the Transit Gateway\n- Transit Gateway route table propagations to create propagated routes and allow traffic from the Transit Gateway to the VPC attachments\n- Transit Gateway route table associations to allow traffic from the VPC attachments to the Transit Gateway\n- Transit Gateway static routes (static routes have a higher precedence than propagated routes)\n- Subnet routes to route traffic from the subnets in each VPC to the other Transit Gateway VPC attachments\n\n\n\u003e [!TIP]\n\u003e #### 👽 Use Atmos with Terraform\n\u003e Cloud Posse uses [`atmos`](https://atmos.tools) to easily orchestrate multiple environments using Terraform. \u003cbr/\u003e\n\u003e Works with [Github Actions](https://atmos.tools/integrations/github-actions/), [Atlantis](https://atmos.tools/integrations/atlantis), or [Spacelift](https://atmos.tools/integrations/spacelift).\n\u003e\n\u003e \u003cdetails\u003e\n\u003e \u003csummary\u003e\u003cstrong\u003eWatch demo of using Atmos with Terraform\u003c/strong\u003e\u003c/summary\u003e\n\u003e \u003cimg src=\"https://github.com/cloudposse/atmos/blob/main/docs/demo.gif?raw=true\"/\u003e\u003cbr/\u003e\n\u003e \u003ci\u003eExample of running \u003ca href=\"https://atmos.tools\"\u003e\u003ccode\u003eatmos\u003c/code\u003e\u003c/a\u003e to manage infrastructure from our \u003ca href=\"https://atmos.tools/quick-start/\"\u003eQuick Start\u003c/a\u003e tutorial.\u003c/i\u003e\n\u003e \u003c/detalis\u003e\n\n\n## Introduction\n\nThis module is configurable via the variable `transit_gateway_config` - see [usage](#usage) and [examples](#examples) below.\n\nThe variable `transit_gateway_config` is a map of environment names (e.g. `prod`, `staging`, `dev`) to the environment configurations.\n\nEach environment configuration contains the following fields:\n\n  - `vpc_id` - The ID of the VPC for which to create a VPC attachment and route table associations and propagations.\n  - `vpc_cidr` - VPC CIDR block.\n  - `subnet_ids` - The IDs of the subnets in the VPC.\n  - `static_routes` - A list of Transit Gateway static route configurations. Note that static routes have a higher precedence than propagated routes.\n  - `subnet_route_table_ids` - The IDs of the subnet route tables. The route tables are used to add routes to allow traffix from the subnets in one VPC\n    to the other VPC attachments.\n  - `route_to` - A set of environment names to route traffic from the current environment to the specified environments.\n    In the example below, in the `prod` environment we create subnet routes to route traffic from the `prod` subnets to the VPC attachments in the `staging` and `dev` environments.\n    Specify either `route_to` or `route_to_cidr_blocks`. `route_to_cidr_blocks` supersedes `route_to`.\n  - `route_to_cidr_blocks` - A set of VPC CIDR blocks to route traffic from the current environment to the specified VPC CIDR blocks.\n    In the example below, in the `staging` environment we create subnet routes to route traffic from the `staging` subnets to the `dev` VPC CIDR.\n    Specify either `route_to` or `route_to_cidr_blocks`. `route_to_cidr_blocks` supersedes `route_to`.\n  - `transit_gateway_vpc_attachment_id` - An existing Transit Gateway Attachment ID. If provided, the module will use it instead of creating a new one.\n\nYou now have the option to have Terraform manage route table entries by key, whereas previously they were only managed by index. The advantage\nof managing them by key is that if a route table ID or destination CIDR changes, only that entry is affected, whereas when managed by index,\nall the entries after the first affected index may be destroyed and re-created at a different index. The reason this is left as an option,\nwith the default being to manage the entries by index, is that if you are creating the VPC or subnets at the same time you are creating\nthe Transit Gateway, then Terraform will not be able to generate the keys during the plan phase and the plan will fail with the error\n`The \"for_each\" value depends on resource attributes that cannot be determined until apply...`. We recommend setting `route_keys_enabled` to\n`true` unless you get this error, in which case you must leave it set to its default value of `false`.\n\n__NOTE:__ This module requires Terraform 0.13 and newer since it uses [module expansion with `for_each`](https://www.hashicorp.com/blog/announcing-hashicorp-terraform-0-13/).\n\n\n\u003e [!TIP]\n\u003e #### Use Terraform Reference Architectures for AWS\n\u003e\n\u003e Use Cloud Posse's ready-to-go [terraform architecture blueprints](https://cloudposse.com/reference-architecture/) for AWS to get up and running quickly.\n\u003e\n\u003e ✅ We build it together with your team.\u003cbr/\u003e\n\u003e ✅ Your team owns everything.\u003cbr/\u003e\n\u003e ✅ 100% Open Source and backed by fanatical support.\u003cbr/\u003e\n\u003e\n\u003e \u003ca href=\"https://cpco.io/commercial-support?utm_source=github\u0026utm_medium=readme\u0026utm_campaign=cloudposse/terraform-aws-transit-gateway\u0026utm_content=commercial_support\"\u003e\u003cimg alt=\"Request Quote\" src=\"https://img.shields.io/badge/request%20quote-success.svg?style=for-the-badge\"/\u003e\u003c/a\u003e\n\u003e \u003cdetails\u003e\u003csummary\u003e📚 \u003cstrong\u003eLearn More\u003c/strong\u003e\u003c/summary\u003e\n\u003e\n\u003e \u003cbr/\u003e\n\u003e\n\u003e Cloud Posse is the leading [**DevOps Accelerator**](https://cpco.io/commercial-support?utm_source=github\u0026utm_medium=readme\u0026utm_campaign=cloudposse/terraform-aws-transit-gateway\u0026utm_content=commercial_support) for funded startups and enterprises.\n\u003e\n\u003e *Your team can operate like a pro today.*\n\u003e\n\u003e Ensure that your team succeeds by using Cloud Posse's proven process and turnkey blueprints. Plus, we stick around until you succeed.\n\u003e #### Day-0:  Your Foundation for Success\n\u003e - **Reference Architecture.** You'll get everything you need from the ground up built using 100% infrastructure as code.\n\u003e - **Deployment Strategy.** Adopt a proven deployment strategy with GitHub Actions, enabling automated, repeatable, and reliable software releases.\n\u003e - **Site Reliability Engineering.** Gain total visibility into your applications and services with Datadog, ensuring high availability and performance.\n\u003e - **Security Baseline.** Establish a secure environment from the start, with built-in governance, accountability, and comprehensive audit logs, safeguarding your operations.\n\u003e - **GitOps.** Empower your team to manage infrastructure changes confidently and efficiently through Pull Requests, leveraging the full power of GitHub Actions.\n\u003e\n\u003e \u003ca href=\"https://cpco.io/commercial-support?utm_source=github\u0026utm_medium=readme\u0026utm_campaign=cloudposse/terraform-aws-transit-gateway\u0026utm_content=commercial_support\"\u003e\u003cimg alt=\"Request Quote\" src=\"https://img.shields.io/badge/request%20quote-success.svg?style=for-the-badge\"/\u003e\u003c/a\u003e\n\u003e\n\u003e #### Day-2: Your Operational Mastery\n\u003e - **Training.** Equip your team with the knowledge and skills to confidently manage the infrastructure, ensuring long-term success and self-sufficiency.\n\u003e - **Support.** Benefit from a seamless communication over Slack with our experts, ensuring you have the support you need, whenever you need it.\n\u003e - **Troubleshooting.** Access expert assistance to quickly resolve any operational challenges, minimizing downtime and maintaining business continuity.\n\u003e - **Code Reviews.** Enhance your team’s code quality with our expert feedback, fostering continuous improvement and collaboration.\n\u003e - **Bug Fixes.** Rely on our team to troubleshoot and resolve any issues, ensuring your systems run smoothly.\n\u003e - **Migration Assistance.** Accelerate your migration process with our dedicated support, minimizing disruption and speeding up time-to-value.\n\u003e - **Customer Workshops.** Engage with our team in weekly workshops, gaining insights and strategies to continuously improve and innovate.\n\u003e\n\u003e \u003ca href=\"https://cpco.io/commercial-support?utm_source=github\u0026utm_medium=readme\u0026utm_campaign=cloudposse/terraform-aws-transit-gateway\u0026utm_content=commercial_support\"\u003e\u003cimg alt=\"Request Quote\" src=\"https://img.shields.io/badge/request%20quote-success.svg?style=for-the-badge\"/\u003e\u003c/a\u003e\n\u003e \n\u003c/details\u003e\n\n\n## Usage\n\nHere's how to invoke this module in your projects:\n\n```hcl\nlocals {\n  transit_gateway_config = {\n    prod = {\n      vpc_id                            = module.vpc_prod.vpc_id\n      vpc_cidr                          = module.vpc_prod.vpc_cidr_block\n      subnet_ids                        = module.subnets_prod.private_subnet_ids\n      subnet_route_table_ids            = module.subnets_prod.private_route_table_ids\n      route_to                          = [\"staging\", \"dev\"]\n      route_to_cidr_blocks              = null\n      transit_gateway_vpc_attachment_id = null\n\n      static_routes = [\n        {\n          blackhole              = true\n          destination_cidr_block = \"0.0.0.0/0\"\n        },\n        {\n          blackhole              = false\n          destination_cidr_block = \"172.16.1.0/24\"\n        }\n      ]\n    },\n\n    staging = {\n      vpc_id                            = module.vpc_staging.vpc_id\n      vpc_cidr                          = module.vpc_staging.vpc_cidr_block\n      subnet_ids                        = module.subnets_staging.private_subnet_ids\n      subnet_route_table_ids            = module.subnets_staging.private_route_table_ids\n      route_to                          = null\n      route_to_cidr_blocks              = [module.vpc_dev.vpc_cidr_block]\n      transit_gateway_vpc_attachment_id = null\n\n      static_routes = [\n        {\n          blackhole              = false\n          destination_cidr_block = \"172.32.1.0/24\"\n        }\n      ]\n    },\n\n    dev = {\n      vpc_id                            = module.vpc_dev.vpc_id\n      vpc_cidr                          = module.vpc_dev.vpc_cidr_block\n      subnet_ids                        = module.subnets_dev.private_subnet_ids\n      subnet_route_table_ids            = module.subnets_dev.private_route_table_ids\n      route_to                          = null\n      route_to_cidr_blocks              = null\n      transit_gateway_vpc_attachment_id = null\n      static_routes                     = null\n    }\n  }\n}\n\nmodule \"transit_gateway\" {\n  source = \"cloudposse/transit-gateway/aws\"\n  # Cloud Posse recommends pinning every module to a specific version\n  # version     = \"x.x.x\"\n\n  ram_resource_share_enabled = false\n  config                     = local.transit_gateway_config\n\n  context = module.this.context\n}\n```\n\n\u003e [!IMPORTANT]\n\u003e In Cloud Posse's examples, we avoid pinning modules to specific versions to prevent discrepancies between the documentation\n\u003e and the latest released versions. However, for your own projects, we strongly advise pinning each module to the exact version\n\u003e you're using. This practice ensures the stability of your infrastructure. Additionally, we recommend implementing a systematic\n\u003e approach for updating versions to avoid unexpected changes.\n\n\n\n\n\n## Examples\n\nHere is a working example of using this module:\n- [`examples/complete`](examples/complete)\n\nHere are automated tests for the complete example using [bats](https://github.com/bats-core/bats-core) and [Terratest](https://github.com/gruntwork-io/terratest) (which tests and deploys the example on AWS):\n- [`test`](test)\n\nHere is an example of using this module in a multi-account environment (with the Transit Gateway in one AWS account and all the VPC attachments and routes in different AWS accounts):\n- [`examples/multi-account`](examples/multi-account)\n\n\n\n\n\u003c!-- markdownlint-disable --\u003e\n## Requirements\n\n| Name | Version |\n|------|---------|\n| \u003ca name=\"requirement_terraform\"\u003e\u003c/a\u003e [terraform](#requirement\\_terraform) | \u003e= 1.3 |\n| \u003ca name=\"requirement_aws\"\u003e\u003c/a\u003e [aws](#requirement\\_aws) | \u003e= 5.69.0 |\n\n## Providers\n\n| Name | Version |\n|------|---------|\n| \u003ca name=\"provider_aws\"\u003e\u003c/a\u003e [aws](#provider\\_aws) | \u003e= 5.69.0 |\n\n## Modules\n\n| Name | Source | Version |\n|------|--------|---------|\n| \u003ca name=\"module_subnet_route\"\u003e\u003c/a\u003e [subnet\\_route](#module\\_subnet\\_route) | ./modules/subnet_route | n/a |\n| \u003ca name=\"module_this\"\u003e\u003c/a\u003e [this](#module\\_this) | cloudposse/label/null | 0.25.0 |\n| \u003ca name=\"module_transit_gateway_route\"\u003e\u003c/a\u003e [transit\\_gateway\\_route](#module\\_transit\\_gateway\\_route) | ./modules/transit_gateway_route | n/a |\n\n## Resources\n\n| Name | Type |\n|------|------|\n| [aws_ec2_transit_gateway.default](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/ec2_transit_gateway) | resource |\n| [aws_ec2_transit_gateway_route_table.default](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/ec2_transit_gateway_route_table) | resource |\n| [aws_ec2_transit_gateway_route_table_association.default](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/ec2_transit_gateway_route_table_association) | resource |\n| [aws_ec2_transit_gateway_route_table_propagation.default](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/ec2_transit_gateway_route_table_propagation) | resource |\n| [aws_ec2_transit_gateway_vpc_attachment.default](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/ec2_transit_gateway_vpc_attachment) | resource |\n| [aws_ram_principal_association.default](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/ram_principal_association) | resource |\n| [aws_ram_resource_association.default](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/ram_resource_association) | resource |\n| [aws_ram_resource_share.default](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/ram_resource_share) | resource |\n| [aws_ec2_transit_gateway.this](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/data-sources/ec2_transit_gateway) | data source |\n| [aws_organizations_organization.default](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/data-sources/organizations_organization) | data source |\n| [aws_vpc.default](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/data-sources/vpc) | data source |\n\n## Inputs\n\n| Name | Description | Type | Default | Required |\n|------|-------------|------|---------|:--------:|\n| \u003ca name=\"input_additional_tag_map\"\u003e\u003c/a\u003e [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`.\u003cbr/\u003eThis is for some rare cases where resources want additional configuration of tags\u003cbr/\u003eand therefore take a list of maps with tag key, value, and additional configuration. | `map(string)` | `{}` | no |\n| \u003ca name=\"input_allow_external_principals\"\u003e\u003c/a\u003e [allow\\_external\\_principals](#input\\_allow\\_external\\_principals) | Indicates whether principals outside your organization can be associated with a resource share | `bool` | `false` | no |\n| \u003ca name=\"input_attributes\"\u003e\u003c/a\u003e [attributes](#input\\_attributes) | ID element. Additional attributes (e.g. `workers` or `cluster`) to add to `id`,\u003cbr/\u003ein the order they appear in the list. New attributes are appended to the\u003cbr/\u003eend of the list. The elements of the list are joined by the `delimiter`\u003cbr/\u003eand treated as a single ID element. | `list(string)` | `[]` | no |\n| \u003ca name=\"input_auto_accept_shared_attachments\"\u003e\u003c/a\u003e [auto\\_accept\\_shared\\_attachments](#input\\_auto\\_accept\\_shared\\_attachments) | Whether resource attachment requests are automatically accepted. Valid values: `disable`, `enable`. Default value: `disable` | `string` | `\"enable\"` | no |\n| \u003ca name=\"input_config\"\u003e\u003c/a\u003e [config](#input\\_config) | Configuration for VPC attachments, Transit Gateway routes, and subnet routes | \u003cpre\u003emap(object({\u003cbr/\u003e    vpc_id                            = string\u003cbr/\u003e    vpc_cidr                          = string\u003cbr/\u003e    subnet_ids                        = set(string)\u003cbr/\u003e    subnet_route_table_ids            = set(string)\u003cbr/\u003e    route_to                          = set(string)\u003cbr/\u003e    route_to_cidr_blocks              = set(string)\u003cbr/\u003e    transit_gateway_vpc_attachment_id = string\u003cbr/\u003e    static_routes = set(object({\u003cbr/\u003e      blackhole              = bool\u003cbr/\u003e      destination_cidr_block = string\u003cbr/\u003e    }))\u003cbr/\u003e  }))\u003c/pre\u003e | `null` | no |\n| \u003ca name=\"input_context\"\u003e\u003c/a\u003e [context](#input\\_context) | Single object for setting entire context at once.\u003cbr/\u003eSee description of individual variables for details.\u003cbr/\u003eLeave string and numeric variables as `null` to use default value.\u003cbr/\u003eIndividual variable settings (non-null) override settings in context object,\u003cbr/\u003eexcept for attributes, tags, and additional\\_tag\\_map, which are merged. | `any` | \u003cpre\u003e{\u003cbr/\u003e  \"additional_tag_map\": {},\u003cbr/\u003e  \"attributes\": [],\u003cbr/\u003e  \"delimiter\": null,\u003cbr/\u003e  \"descriptor_formats\": {},\u003cbr/\u003e  \"enabled\": true,\u003cbr/\u003e  \"environment\": null,\u003cbr/\u003e  \"id_length_limit\": null,\u003cbr/\u003e  \"label_key_case\": null,\u003cbr/\u003e  \"label_order\": [],\u003cbr/\u003e  \"label_value_case\": null,\u003cbr/\u003e  \"labels_as_tags\": [\u003cbr/\u003e    \"unset\"\u003cbr/\u003e  ],\u003cbr/\u003e  \"name\": null,\u003cbr/\u003e  \"namespace\": null,\u003cbr/\u003e  \"regex_replace_chars\": null,\u003cbr/\u003e  \"stage\": null,\u003cbr/\u003e  \"tags\": {},\u003cbr/\u003e  \"tenant\": null\u003cbr/\u003e}\u003c/pre\u003e | no |\n| \u003ca name=\"input_create_transit_gateway\"\u003e\u003c/a\u003e [create\\_transit\\_gateway](#input\\_create\\_transit\\_gateway) | Whether to create a Transit Gateway. If set to `false`, an existing Transit Gateway ID must be provided in the variable `existing_transit_gateway_id` | `bool` | `true` | no |\n| \u003ca name=\"input_create_transit_gateway_route_table\"\u003e\u003c/a\u003e [create\\_transit\\_gateway\\_route\\_table](#input\\_create\\_transit\\_gateway\\_route\\_table) | Whether to create a Transit Gateway Route Table. If set to `false`, an existing Transit Gateway Route Table ID must be provided in the variable `existing_transit_gateway_route_table_id` | `bool` | `true` | no |\n| \u003ca name=\"input_create_transit_gateway_route_table_association_and_propagation\"\u003e\u003c/a\u003e [create\\_transit\\_gateway\\_route\\_table\\_association\\_and\\_propagation](#input\\_create\\_transit\\_gateway\\_route\\_table\\_association\\_and\\_propagation) | Whether to create Transit Gateway Route Table associations and propagations | `bool` | `true` | no |\n| \u003ca name=\"input_create_transit_gateway_vpc_attachment\"\u003e\u003c/a\u003e [create\\_transit\\_gateway\\_vpc\\_attachment](#input\\_create\\_transit\\_gateway\\_vpc\\_attachment) | Whether to create Transit Gateway VPC Attachments | `bool` | `true` | no |\n| \u003ca name=\"input_default_route_table_association\"\u003e\u003c/a\u003e [default\\_route\\_table\\_association](#input\\_default\\_route\\_table\\_association) | Whether resource attachments are automatically associated with the default association route table. Valid values: `disable`, `enable`. Default value: `disable` | `string` | `\"disable\"` | no |\n| \u003ca name=\"input_default_route_table_propagation\"\u003e\u003c/a\u003e [default\\_route\\_table\\_propagation](#input\\_default\\_route\\_table\\_propagation) | Whether resource attachments automatically propagate routes to the default propagation route table. Valid values: `disable`, `enable`. Default value: `disable` | `string` | `\"disable\"` | no |\n| \u003ca name=\"input_delimiter\"\u003e\u003c/a\u003e [delimiter](#input\\_delimiter) | Delimiter to be used between ID elements.\u003cbr/\u003eDefaults to `-` (hyphen). Set to `\"\"` to use no delimiter at all. | `string` | `null` | no |\n| \u003ca name=\"input_descriptor_formats\"\u003e\u003c/a\u003e [descriptor\\_formats](#input\\_descriptor\\_formats) | Describe additional descriptors to be output in the `descriptors` output map.\u003cbr/\u003eMap of maps. Keys are names of descriptors. Values are maps of the form\u003cbr/\u003e`{\u003cbr/\u003e   format = string\u003cbr/\u003e   labels = list(string)\u003cbr/\u003e}`\u003cbr/\u003e(Type is `any` so the map values can later be enhanced to provide additional options.)\u003cbr/\u003e`format` is a Terraform format string to be passed to the `format()` function.\u003cbr/\u003e`labels` is a list of labels, in order, to pass to `format()` function.\u003cbr/\u003eLabel values will be normalized before being passed to `format()` so they will be\u003cbr/\u003eidentical to how they appear in `id`.\u003cbr/\u003eDefault is `{}` (`descriptors` output will be empty). | `any` | `{}` | no |\n| \u003ca name=\"input_dns_support\"\u003e\u003c/a\u003e [dns\\_support](#input\\_dns\\_support) | Whether resource attachments automatically propagate routes to the default propagation route table. Valid values: `disable`, `enable`. Default value: `enable` | `string` | `\"enable\"` | no |\n| \u003ca name=\"input_enabled\"\u003e\u003c/a\u003e [enabled](#input\\_enabled) | Set to false to prevent the module from creating any resources | `bool` | `null` | no |\n| \u003ca name=\"input_environment\"\u003e\u003c/a\u003e [environment](#input\\_environment) | ID element. Usually used for region e.g. 'uw2', 'us-west-2', OR role 'prod', 'staging', 'dev', 'UAT' | `string` | `null` | no |\n| \u003ca name=\"input_existing_transit_gateway_id\"\u003e\u003c/a\u003e [existing\\_transit\\_gateway\\_id](#input\\_existing\\_transit\\_gateway\\_id) | Existing Transit Gateway ID. If provided, the module will not create a Transit Gateway but instead will use the existing one | `string` | `null` | no |\n| \u003ca name=\"input_existing_transit_gateway_route_table_id\"\u003e\u003c/a\u003e [existing\\_transit\\_gateway\\_route\\_table\\_id](#input\\_existing\\_transit\\_gateway\\_route\\_table\\_id) | Existing Transit Gateway Route Table ID. If provided, the module will not create a Transit Gateway Route Table but instead will use the existing one | `string` | `null` | no |\n| \u003ca name=\"input_id_length_limit\"\u003e\u003c/a\u003e [id\\_length\\_limit](#input\\_id\\_length\\_limit) | Limit `id` to this many characters (minimum 6).\u003cbr/\u003eSet to `0` for unlimited length.\u003cbr/\u003eSet to `null` for keep the existing setting, which defaults to `0`.\u003cbr/\u003eDoes not affect `id_full`. | `number` | `null` | no |\n| \u003ca name=\"input_label_key_case\"\u003e\u003c/a\u003e [label\\_key\\_case](#input\\_label\\_key\\_case) | Controls the letter case of the `tags` keys (label names) for tags generated by this module.\u003cbr/\u003eDoes not affect keys of tags passed in via the `tags` input.\u003cbr/\u003ePossible values: `lower`, `title`, `upper`.\u003cbr/\u003eDefault value: `title`. | `string` | `null` | no |\n| \u003ca name=\"input_label_order\"\u003e\u003c/a\u003e [label\\_order](#input\\_label\\_order) | The order in which the labels (ID elements) appear in the `id`.\u003cbr/\u003eDefaults to [\"namespace\", \"environment\", \"stage\", \"name\", \"attributes\"].\u003cbr/\u003eYou can omit any of the 6 labels (\"tenant\" is the 6th), but at least one must be present. | `list(string)` | `null` | no |\n| \u003ca name=\"input_label_value_case\"\u003e\u003c/a\u003e [label\\_value\\_case](#input\\_label\\_value\\_case) | Controls the letter case of ID elements (labels) as included in `id`,\u003cbr/\u003eset as tag values, and output by this module individually.\u003cbr/\u003eDoes not affect values of tags passed in via the `tags` input.\u003cbr/\u003ePossible values: `lower`, `title`, `upper` and `none` (no transformation).\u003cbr/\u003eSet this to `title` and set `delimiter` to `\"\"` to yield Pascal Case IDs.\u003cbr/\u003eDefault value: `lower`. | `string` | `null` | no |\n| \u003ca name=\"input_labels_as_tags\"\u003e\u003c/a\u003e [labels\\_as\\_tags](#input\\_labels\\_as\\_tags) | Set of labels (ID elements) to include as tags in the `tags` output.\u003cbr/\u003eDefault is to include all labels.\u003cbr/\u003eTags with empty values will not be included in the `tags` output.\u003cbr/\u003eSet to `[]` to suppress all generated tags.\u003cbr/\u003e**Notes:**\u003cbr/\u003e  The value of the `name` tag, if included, will be the `id`, not the `name`.\u003cbr/\u003e  Unlike other `null-label` inputs, the initial setting of `labels_as_tags` cannot be\u003cbr/\u003e  changed in later chained modules. Attempts to change it will be silently ignored. | `set(string)` | \u003cpre\u003e[\u003cbr/\u003e  \"default\"\u003cbr/\u003e]\u003c/pre\u003e | no |\n| \u003ca name=\"input_name\"\u003e\u003c/a\u003e [name](#input\\_name) | ID element. Usually the component or solution name, e.g. 'app' or 'jenkins'.\u003cbr/\u003eThis is the only ID element not also included as a `tag`.\u003cbr/\u003eThe \"name\" tag is set to the full `id` string. There is no tag with the value of the `name` input. | `string` | `null` | no |\n| \u003ca name=\"input_namespace\"\u003e\u003c/a\u003e [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 |\n| \u003ca name=\"input_ram_principal\"\u003e\u003c/a\u003e [ram\\_principal](#input\\_ram\\_principal) | DEPRECATED, please use ram\\_principals instead.\u003cbr/\u003e\u003cbr/\u003eThe principal to associate with the resource share. Possible values are an\u003cbr/\u003eAWS account ID, an Organization ARN, or an Organization Unit ARN. | `string` | `null` | no |\n| \u003ca name=\"input_ram_principals\"\u003e\u003c/a\u003e [ram\\_principals](#input\\_ram\\_principals) | A list of principals to associate with the resource share. Possible values\u003cbr/\u003eare:\u003cbr/\u003e\u003cbr/\u003e* AWS account ID\u003cbr/\u003e* Organization ARN\u003cbr/\u003e* Organization Unit ARN\u003cbr/\u003e\u003cbr/\u003eIf this (and var.ram\\_principal) is not provided and\u003cbr/\u003e`ram_resource_share_enabled` is `true`, the Organization ARN will be used. | `list(string)` | `[]` | no |\n| \u003ca name=\"input_ram_resource_share_enabled\"\u003e\u003c/a\u003e [ram\\_resource\\_share\\_enabled](#input\\_ram\\_resource\\_share\\_enabled) | Whether to enable sharing the Transit Gateway with the Organization using Resource Access Manager (RAM) | `bool` | `false` | no |\n| \u003ca name=\"input_regex_replace_chars\"\u003e\u003c/a\u003e [regex\\_replace\\_chars](#input\\_regex\\_replace\\_chars) | Terraform regular expression (regex) string.\u003cbr/\u003eCharacters matching the regex will be removed from the ID elements.\u003cbr/\u003eIf not set, `\"/[^a-zA-Z0-9-]/\"` is used to remove all characters other than hyphens, letters and digits. | `string` | `null` | no |\n| \u003ca name=\"input_route_keys_enabled\"\u003e\u003c/a\u003e [route\\_keys\\_enabled](#input\\_route\\_keys\\_enabled) | If true, Terraform will use keys to label routes, preventing unnecessary changes,\u003cbr/\u003ebut this requires that the VPCs and subnets already exist before using this module.\u003cbr/\u003eIf false, Terraform will use numbers to label routes, and a single change may\u003cbr/\u003ecascade to a long list of changes because the index or order has changed, but\u003cbr/\u003ethis will work when the `true` setting generates the error `The \"for_each\" value depends on resource attributes...` | `bool` | `false` | no |\n| \u003ca name=\"input_route_timeouts\"\u003e\u003c/a\u003e [route\\_timeouts](#input\\_route\\_timeouts) | aws\\_route resource timeouts | \u003cpre\u003eobject({\u003cbr/\u003e    create = optional(string),\u003cbr/\u003e    delete = optional(string),\u003cbr/\u003e    update = optional(string)\u003cbr/\u003e  })\u003c/pre\u003e | `{}` | no |\n| \u003ca name=\"input_security_group_referencing_support_enabled\"\u003e\u003c/a\u003e [security\\_group\\_referencing\\_support\\_enabled](#input\\_security\\_group\\_referencing\\_support\\_enabled) | Enable or disable support for referencing security groups across VPCs in the transit gateway. | `bool` | `false` | no |\n| \u003ca name=\"input_stage\"\u003e\u003c/a\u003e [stage](#input\\_stage) | ID element. Usually used to indicate role, e.g. 'prod', 'staging', 'source', 'build', 'test', 'deploy', 'release' | `string` | `null` | no |\n| \u003ca name=\"input_tags\"\u003e\u003c/a\u003e [tags](#input\\_tags) | Additional tags (e.g. `{'BusinessUnit': 'XYZ'}`).\u003cbr/\u003eNeither the tag keys nor the tag values will be modified by this module. | `map(string)` | `{}` | no |\n| \u003ca name=\"input_tenant\"\u003e\u003c/a\u003e [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 |\n| \u003ca name=\"input_transit_gateway_cidr_blocks\"\u003e\u003c/a\u003e [transit\\_gateway\\_cidr\\_blocks](#input\\_transit\\_gateway\\_cidr\\_blocks) | The list of associated CIDR blocks. It can contain up to 1 IPv4 CIDR block\u003cbr/\u003eof size up to /24 and up to one IPv6 CIDR block of size up to /64. The IPv4\u003cbr/\u003eblock must not be from range 169.254.0.0/16. | `list(string)` | `null` | no |\n| \u003ca name=\"input_transit_gateway_description\"\u003e\u003c/a\u003e [transit\\_gateway\\_description](#input\\_transit\\_gateway\\_description) | Transit Gateway description. If not provided, one will be automatically generated. | `string` | `\"\"` | no |\n| \u003ca name=\"input_vpc_attachment_appliance_mode_support\"\u003e\u003c/a\u003e [vpc\\_attachment\\_appliance\\_mode\\_support](#input\\_vpc\\_attachment\\_appliance\\_mode\\_support) | Whether Appliance Mode support is enabled. If enabled, a traffic flow between a source and destination uses the same Availability Zone for the VPC attachment for the lifetime of that flow. Valid values: `disable`, `enable` | `string` | `\"disable\"` | no |\n| \u003ca name=\"input_vpc_attachment_dns_support\"\u003e\u003c/a\u003e [vpc\\_attachment\\_dns\\_support](#input\\_vpc\\_attachment\\_dns\\_support) | Whether resource attachments automatically propagate routes to the default propagation route table. Valid values: `disable`, `enable`. Default value: `enable` | `string` | `\"enable\"` | no |\n| \u003ca name=\"input_vpc_attachment_ipv6_support\"\u003e\u003c/a\u003e [vpc\\_attachment\\_ipv6\\_support](#input\\_vpc\\_attachment\\_ipv6\\_support) | Whether resource attachments automatically propagate routes to the default propagation route table. Valid values: `disable`, `enable`. Default value: `enable` | `string` | `\"disable\"` | no |\n| \u003ca name=\"input_vpn_ecmp_support\"\u003e\u003c/a\u003e [vpn\\_ecmp\\_support](#input\\_vpn\\_ecmp\\_support) | Whether resource attachments automatically propagate routes to the default propagation route table. Valid values: `disable`, `enable`. Default value: `enable` | `string` | `\"enable\"` | no |\n\n## Outputs\n\n| Name | Description |\n|------|-------------|\n| \u003ca name=\"output_ram_resource_share_id\"\u003e\u003c/a\u003e [ram\\_resource\\_share\\_id](#output\\_ram\\_resource\\_share\\_id) | RAM resource share ID |\n| \u003ca name=\"output_subnet_route_ids\"\u003e\u003c/a\u003e [subnet\\_route\\_ids](#output\\_subnet\\_route\\_ids) | Subnet route identifiers combined with destinations |\n| \u003ca name=\"output_transit_gateway_arn\"\u003e\u003c/a\u003e [transit\\_gateway\\_arn](#output\\_transit\\_gateway\\_arn) | Transit Gateway ARN |\n| \u003ca name=\"output_transit_gateway_association_default_route_table_id\"\u003e\u003c/a\u003e [transit\\_gateway\\_association\\_default\\_route\\_table\\_id](#output\\_transit\\_gateway\\_association\\_default\\_route\\_table\\_id) | Transit Gateway association default route table ID |\n| \u003ca name=\"output_transit_gateway_id\"\u003e\u003c/a\u003e [transit\\_gateway\\_id](#output\\_transit\\_gateway\\_id) | Transit Gateway ID |\n| \u003ca name=\"output_transit_gateway_propagation_default_route_table_id\"\u003e\u003c/a\u003e [transit\\_gateway\\_propagation\\_default\\_route\\_table\\_id](#output\\_transit\\_gateway\\_propagation\\_default\\_route\\_table\\_id) | Transit Gateway propagation default route table ID |\n| \u003ca name=\"output_transit_gateway_route_ids\"\u003e\u003c/a\u003e [transit\\_gateway\\_route\\_ids](#output\\_transit\\_gateway\\_route\\_ids) | Transit Gateway route identifiers combined with destinations |\n| \u003ca name=\"output_transit_gateway_route_table_id\"\u003e\u003c/a\u003e [transit\\_gateway\\_route\\_table\\_id](#output\\_transit\\_gateway\\_route\\_table\\_id) | Transit Gateway route table ID |\n| \u003ca name=\"output_transit_gateway_vpc_attachment_ids\"\u003e\u003c/a\u003e [transit\\_gateway\\_vpc\\_attachment\\_ids](#output\\_transit\\_gateway\\_vpc\\_attachment\\_ids) | Transit Gateway VPC attachment IDs |\n\u003c!-- markdownlint-restore --\u003e\n\n\n\n\n\n\n\n## Related Projects\n\nCheck out these related projects.\n\n- [terraform-null-label](https://github.com/cloudposse/terraform-null-label) - Terraform module designed to generate consistent names and tags for resources. Use terraform-null-label to implement a strict naming convention\n- [terraform-aws-vpc](https://github.com/cloudposse/terraform-aws-vpc) - Terraform Module that defines a VPC with public/private subnets across multiple AZs with Internet Gateways\n- [terraform-aws-vpc-peering](https://github.com/cloudposse/terraform-aws-vpc-peering) - Terraform module to create a peering connection between two VPCs\n- [terraform-aws-kops-vpc-peering](https://github.com/cloudposse/terraform-aws-kops-vpc-peering) - Terraform module to create a peering connection between a backing services VPC and a VPC created by Kops\n- [terraform-aws-dynamic-subnets](https://github.com/cloudposse/terraform-aws-dynamic-subnets) - Terraform module for public and private subnets provisioning in an existing VPC\n- [terraform-aws-multi-az-subnets](https://github.com/cloudposse/terraform-aws-multi-az-subnets) - Terraform module for multi-AZ public and private subnets provisioning\n- [terraform-aws-named-subnets](https://github.com/cloudposse/terraform-aws-named-subnets) - Terraform module for named subnets provisioning\n\n\n## References\n\nFor additional context, refer to some of these links.\n\n- [Terraform Standard Module Structure](https://www.terraform.io/docs/modules/index.html#standard-module-structure) - HashiCorp's standard module structure is a file and directory layout we recommend for reusable modules distributed in separate repositories.\n- [Terraform Module Requirements](https://www.terraform.io/docs/registry/modules/publish.html#requirements) - HashiCorp's guidance on all the requirements for publishing a module. Meeting the requirements for publishing a module is extremely easy.\n- [Terraform `random_integer` Resource](https://registry.terraform.io/providers/hashicorp/random/latest/docs/resources/integer) - The resource random_integer generates random values from a given range, described by the min and max attributes of a given resource.\n- [Terraform Version Pinning](https://www.terraform.io/docs/configuration/terraform.html#specifying-a-required-terraform-version) - The required_version setting can be used to constrain which versions of the Terraform CLI can be used with your configuration\n\n\n\n\n## ✨ Contributing\n\nThis project is under active development, and we encourage contributions from our community.\n\n\n\nMany thanks to our outstanding contributors:\n\n\u003ca href=\"https://github.com/cloudposse/terraform-aws-transit-gateway/graphs/contributors\"\u003e\n  \u003cimg src=\"https://contrib.rocks/image?repo=cloudposse/terraform-aws-transit-gateway\u0026max=24\" /\u003e\n\u003c/a\u003e\n\nFor 🐛 bug reports \u0026 feature requests, please use the [issue tracker](https://github.com/cloudposse/terraform-aws-transit-gateway/issues).\n\nIn general, PRs are welcome. We follow the typical \"fork-and-pull\" Git workflow.\n 1. Review our [Code of Conduct](https://github.com/cloudposse/terraform-aws-transit-gateway/?tab=coc-ov-file#code-of-conduct) and [Contributor Guidelines](https://github.com/cloudposse/.github/blob/main/CONTRIBUTING.md).\n 2. **Fork** the repo on GitHub\n 3. **Clone** the project to your own machine\n 4. **Commit** changes to your own branch\n 5. **Push** your work back up to your fork\n 6. Submit a **Pull Request** so that we can review your changes\n\n**NOTE:** Be sure to merge the latest changes from \"upstream\" before making a pull request!\n\n\n## Running Terraform Tests\n\nWe use [Atmos](https://atmos.tools) to streamline how Terraform tests are run. It centralizes configuration and wraps common test workflows with easy-to-use commands.\n\nAll tests are located in the [`test/`](test) folder.\n\nUnder the hood, tests are powered by Terratest together with our internal [Test Helpers](https://github.com/cloudposse/test-helpers) library, providing robust infrastructure validation.\n\nSetup dependencies:\n- Install Atmos ([installation guide](https://atmos.tools/install/))\n- Install Go [1.24+ or newer](https://go.dev/doc/install)\n- Install Terraform or OpenTofu\n\nTo run tests:\n\n- Run all tests:  \n  ```sh\n  atmos test run\n  ```\n- Clean up test artifacts:  \n  ```sh\n  atmos test clean\n  ```\n- Explore additional test options:  \n  ```sh\n  atmos test --help\n  ```\nThe configuration for test commands is centrally managed. To review what's being imported, see the [`atmos.yaml`](https://raw.githubusercontent.com/cloudposse/.github/refs/heads/main/.github/atmos/terraform-module.yaml) file.\n\nLearn more about our [automated testing in our documentation](https://docs.cloudposse.com/community/contribute/automated-testing/) or implementing [custom commands](https://atmos.tools/core-concepts/custom-commands/) with atmos.\n\n### 🌎 Slack Community\n\nJoin our [Open Source Community](https://cpco.io/slack?utm_source=github\u0026utm_medium=readme\u0026utm_campaign=cloudposse/terraform-aws-transit-gateway\u0026utm_content=slack) on Slack. It's **FREE** for everyone! Our \"SweetOps\" community is where you get to talk with others who share a similar vision for how to rollout and manage infrastructure. This is the best place to talk shop, ask questions, solicit feedback, and work together as a community to build totally *sweet* infrastructure.\n\n### 📰 Newsletter\n\nSign up for [our newsletter](https://cpco.io/newsletter?utm_source=github\u0026utm_medium=readme\u0026utm_campaign=cloudposse/terraform-aws-transit-gateway\u0026utm_content=newsletter) and join 3,000+ DevOps engineers, CTOs, and founders who get insider access to the latest DevOps trends, so you can always stay in the know.\nDropped straight into your Inbox every week — and usually a 5-minute read.\n\n### 📆 Office Hours \u003ca href=\"https://cloudposse.com/office-hours?utm_source=github\u0026utm_medium=readme\u0026utm_campaign=cloudposse/terraform-aws-transit-gateway\u0026utm_content=office_hours\"\u003e\u003cimg src=\"https://img.cloudposse.com/fit-in/200x200/https://cloudposse.com/wp-content/uploads/2019/08/Powered-by-Zoom.png\" align=\"right\" /\u003e\u003c/a\u003e\n\n[Join us every Wednesday via Zoom](https://cloudposse.com/office-hours?utm_source=github\u0026utm_medium=readme\u0026utm_campaign=cloudposse/terraform-aws-transit-gateway\u0026utm_content=office_hours) for your weekly dose of insider DevOps trends, AWS news and Terraform insights, all sourced from our SweetOps community, plus a _live Q\u0026A_ that you can’t find anywhere else.\nIt's **FREE** for everyone!\n## License\n\n\u003ca href=\"https://opensource.org/licenses/Apache-2.0\"\u003e\u003cimg src=\"https://img.shields.io/badge/License-Apache%202.0-blue.svg?style=for-the-badge\" alt=\"License\"\u003e\u003c/a\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003ePreamble to the Apache License, Version 2.0\u003c/summary\u003e\n\u003cbr/\u003e\n\u003cbr/\u003e\n\nComplete license is available in the [`LICENSE`](LICENSE) file.\n\n```text\nLicensed to the Apache Software Foundation (ASF) under one\nor more contributor license agreements.  See the NOTICE file\ndistributed with this work for additional information\nregarding copyright ownership.  The ASF licenses this file\nto you under the Apache License, Version 2.0 (the\n\"License\"); you may not use this file except in compliance\nwith the License.  You may obtain a copy of the License at\n\n  https://www.apache.org/licenses/LICENSE-2.0\n\nUnless required by applicable law or agreed to in writing,\nsoftware distributed under the License is distributed on an\n\"AS IS\" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY\nKIND, either express or implied.  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