devops-rob / terraform-provider-terracurl

A flexible Terraform provider for making API calls
https://www.hashicorp.com/blog/writing-terraform-for-unsupported-resources
Mozilla Public License 2.0
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api api-rest http terracurl terraform terraform-provider

Terraform Provider TerraCurl

Available in the Terraform Registry.

This provider is designed to be a flexible extension of your terraform code to make managed and unamanged API calls to your target endpoint. Platform native providers should be preferred to TerraCurl but for instances where the platform provider does not have a resource or data source that you require, TerraCurl can be used to make substitute API calls.

Managed API calls

When using TerraCurl, if the API call is creating a change on the target platform and you would like this change reversed upon a destroy, use the terracurl_request resource. This will allow you to enter the API call that should be run when terraform destroy is run.

resource "terracurl_request" "mount" {
  name           = "vault-mount"
  url            = "https://localhost:8200/v1/sys/mounts/aws"
  method         = "POST"
  request_body   = <<EOF
{
  "type": "aws",
  "config": {
    "force_no_cache": true
  }
}

EOF

  headers = {
    X-Vault-Token = "root"
  }

  response_codes = [
    200,
    204
  ]

  cert_file       = "server-vault-0.pem"
  key_file        = "server-vault-0-key.pem"
  ca_cert_file    = "vault-server-ca.pem"
  skip_tls_verify = false

  destroy_url    = "https://localhost:8200/v1/sys/mounts/aws"
  destroy_method = "DELETE"

  destroy_headers = {
    X-Vault-Token = "root"
  }

  destroy_response_codes = [
    204
  ]

  destroy_cert_file       = "server-vault-0.pem"
  destroy_key_file        = "server-vault-0-key.pem"
  destroy_ca_cert_file    = "vault-server-ca.pem"
  destroy_skip_tls_verify = false

}

Unmanaged API calls

For instances where there is no change required on the target platform when the terraform destroy command is run, use the terracurl_request data source

data "terracurl_request" "test" {
  name           = "products"
  url            = "https://api.releases.hashicorp.com/v1/products"
  method         = "GET"

  response_codes = [
    200
  ]

  max_retry      = 1
  retry_interval = 10
}

Requirements

Building The Provider

  1. Clone the repository
  2. Enter the repository directory
  3. Build the provider using the Go install command:
    $ go install

Adding Dependencies

This provider uses Go modules. Please see the Go documentation for the most up to date information about using Go modules.

To add a new dependency github.com/author/dependency to your Terraform provider:

go get github.com/author/dependency
go mod tidy

Then commit the changes to go.mod and go.sum.

Developing the Provider

If you wish to work on the provider, you'll first need Go installed on your machine (see Requirements above).

To compile the provider, update the makefile with your OS architecture, then run make install. This will build the provider and put the provider binary in the ~/.terraform.d/plugins/local/ directory.

To generate or update documentation, run make docs.

In order to run the full suite of Acceptance tests, run make test.

Note: Acceptance tests create real resources, and often cost money to run.

$ make test