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Oct 29, 2021
Oct 29, 2021
Sep 3, 2021

Terraform Provider OpenAPI Build Status GoDoc GoReportCard CodeCov

This terraform provider aims to minimise as much as possible the efforts needed from service providers to create and maintain custom terraform providers. This provider uses terraform as the engine that will orchestrate and manage the cycle of the resources and depends on a swagger file (hosted on a remote endpoint) to successfully configure itself dynamically at runtime.

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Following The OpenAPI Specification

What are the main pain points that this terraform provider tries to tackle?

  • As as service provider, you can focus on improving the service itself rather than the tooling around it.
  • Due to the dynamic nature of this terraform provider, the service provider can continue expanding the functionality of the different APIs by introducing new versions, and this terraform provider will be able to discover the new resource versions automatically without the need to add support for those as you would when mantining your own custom Terraform provider.
  • Find consistency across APIs provided by different teams encouraging the adoption of OpenAPI specification for describing, producing, consuming, and visualizing RESTful Web services.


API terraform provider is a powerful full-fledged terraform provider that is able to configure itself at runtime based on a Swagger specification file containing the definitions of the APIs exposed. The dynamic nature of this provider is what makes it very flexible and convenient for service providers as subsequent upgrades to their APIs will not require new compilations of this provider. The service provider APIs are discovered on the fly and therefore the service providers can focus on their services rather than the tooling around it.


  • The service provider hosts APIs documented using OpenApi 2.0 specification and the APIs comply with the OpenAPI Terraform Provider How to guidelines. The service provider API's OpenAPI document must also be available via a discovery endpoint served through HTTP/s or the file system.


How to use Terraform Provider OpenAPI

Things to know regarding custom terraform providers

  • Terraform expects third party (in-house) providers to be manually installed in a specific directory. Refer to the OpenAPI Terraform provider installation instructions to learn more about this.
  • Terraform expects terraform provider names to follow a specific naming scheme. The naming scheme for plugins is terraform-<type>-<name>_vX.Y.Z, where <type> is either provider or provisioner, <name> is the provider's name and X.Y.Z is the version of the plugin.

More information about how terraform discovers third party terraform providers and naming conventions here.

OpenAPI Terraform provider installation

There are multiple ways how the OpenAPI Terraform provider can be installed. Please refer to the OpenAPI Terraform provider installation document to learn more about it.

OpenAPI Terraform provider in action

After having provisioned your environment with the OpenAPI Terraform provider you can now write Terraform configuration files using resources provided by the OpenAPI service. Refer to Using the OpenAPI Terraform Provider doc for more details.

Terraform provider documentation

You can generate the Terraform documentation automatically given an already Terraform compatible OpenAPI document using the The OpenAPI Terraform Documentation Renderer library. The OpenAPI document is the source of truth for both the OpenAPI Terraform provider as well as the user facing documentation.

How to publish the provider in the Terraform Registry

The Publishing OpenAPI Terraform providers in the Terraform Registry document describes how service providers can make use of the OpenAPI Terraform provider library to create their own Terraform provider and register it in the Terraform Registry.


Additionally, the following documents provide deep insight regarding OpenAPI and Terraform as well as frequently asked questions:

  • How to document contains information about how to define a OpenAPI document following good practises that make it work seamlessly with this terraform provider. Additionally, learn more about what is currently supported.
  • Migrating to Terraform 0.12. This document describes how to update configuration created using Terraform v0.11 to v0.12.
  • FAQ document answers for the most frequently asked questions.


Please follow the guidelines from:


  • go-swagger: Api terraform provider makes extensive use of this library which offers a very convenient implementation to serialize and deserialize swagger specifications.
  • JsonPath: Json path is used in the plugin external configuration file to define values for provider schema properties that are coming from external files.


  • Daniel I. Khan Ramiro

See also the list of contributors who participated in this project.


OpenAPI Terraform Provider that configures itself at runtime with the resources exposed by the service provider (defined in a swagger file)




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