Terraform Provider for Astra

Astra is the DataStax (serverless) service platform for Apache Cassandra and Apache Pulsar.

Prerequisites

Astra

Before using this provider, you will need an Astra account, and an Astra token for authentication. From the Astra Dashboard, you can generate a new token using the Token Management section.

Terraform

You will need Terraform version 1.0 or higher.

Getting Started

Reference documentation can be found in the terraform registry

Create a new Astra database using terraform

1. Create a file called main.tf in a new directory:

   terraform {
     required_providers {
       astra = {
         source = "datastax/astra"
         version = "2.2.8"
       }
     }
   }
   
   variable "token" {}
   
   provider "astra" {
     // This can also be set via ASTRA_API_TOKEN environment variable.
     token = var.token
   }
   
   resource "astra_database" "example" {
     name           = "mydb1"
     keyspace       = "ks1"
     cloud_provider = "gcp"
     regions        = ["us-east1"]
   }

2. Initialize terraform

   terraform init
   

3. Preview the changes

   terraform plan
   

4. Create resources

   terraform apply
   

   If the changes look ok, then approve the changes with yes.

5. Wait for the resources to be created. The new database should be visible in the Astra Dashboard .

Examples

The examples diretory contains example configuration for the various resources.

Local Development

Build the provider from source

The build requires Go >= 1.22

In order to develop and test this provider, you'll need to configure your local environment with a custom Terraform config file. This allows provider plugins to be retrieved from the local file system instead of from the public servers.

1. Edit or create a .terraformrc file in your $HOME directory which includes custom provider_installation settings. Note that you will need to manually expand $HOME to your actual home directory.

   provider_installation {
     # This disables the version and checksum verifications for locally installed astra providers.
     # See: https://developer.hashicorp.com/terraform/cli/config/config-file#development-overrides-for-provider-developers
     dev_overrides {
       "datastax/astra" = "$HOME/go/src/github.com/datastax/terraform-provider-astra/bin"
     }
     direct {
     }
   }
   

2. Build the provider binary

   cd $HOME/go/src/github.com/datastax/terraform-provider-astra
   make
   

3. Create a new Terraform config file or run an existing one and the locally built provider will be used. You may see a warning about using an unverified binary.

   │ Warning: Provider development overrides are in effect
   

   Note: terraform init should be skipped when developing locally.

By default, Terraform will run against the public servers. To run against a test server, set the following environment variables.

export ASTRA_API_URL="<Astra test server URL>"
export ASTRA_STREAMING_API_URL="<Astra streaming test server URL>"
export ASTRA_API_TOKEN="<Astra test server Token>"

Running the tests

The tests require several environment variables to be set in order to successfully run. By default any tests which are missing the required environment variables will be skipped.

export ASTRA_TEST_DATABASE_ID="<Astra database UUID>"
export ASTRA_TEST_DATACENTER_ID="<Astra datacenter id>"
export ASTRA_TEST_ENDPOINT_ID="<Astra endpoint ID>"

An example of these variables can be found in the file test/example-test.env. If a file called test/test.env is created it will be automatically loaded by the test script.

The tests can be run via Make.

make test

A single test can be run using golang test args.

export TESTARGS="-run TestStreamingTenant"
make test

Adding a new resource

This project uses both the terraform-plugin-sdk which is now deprecated, and the newer terraform-plugin-framework. In addition, terraform-plugin-mux is used to allow the sdk and framework to work together.

New resources should use the terraform-plugin-framework and should be added under the internal/astra directory. For an example of how to use the terraform-plugin-framework, see the hashicups provider.

Documentation Updates

When modifying plugin services, updates to documentation may be required. Once you have changed a service description, or added or deleted a service, you need to regenerate the docs and commit them with your changes.

Update Generated docs

The tool used to generate documentation is tfplugindocs. The Makefile is configured with a target to generate the docs.

make docs

The tool will build the plugin and generate the docs based on the implementation. Make sure to add the docs folder to your commit to include any changes in the docs.