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70 lines
2.6 KiB
Markdown
70 lines
2.6 KiB
Markdown
# Constellation Terraform Provider
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This document explains the basic ways of working with the [Constellation Terraform Provider](../../terraform-provider-constellation/).
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## Building the Terraform Provider
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The Constellation Terraform provider can be built through Bazel, either via the [`devbuild` target](./build-develop-deploy.md) (recommended), which will create a `terraform` directory
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with the provider binary and some utility files in the current working directory, or explicitly via this command:
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```bash
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bazel build //terraform-provider-constellation:tf_provider
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```
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Documentation for the provider can be generated with:
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```bash
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bazel run //:generate
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# or
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bazel run //bazel/ci:terraform_docgen
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```
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## Using the Terraform Provider
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If using the [`devbuild` target](./build-develop-deploy.md), the Terraform provider binary is automatically copied to your local registry cache
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at `${HOME}/.terraform.d/plugins/registry.terraform.io/edgelesssys/constellation/<version>/<os>_<arch>/`.
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After running `devbuild`, you can use the provider by simply adding the following to your Terraform configuration:
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```hcl
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terraform {
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required_providers {
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constellation = {
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source = "edgelesssys/constellation"
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version = "<version>"
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}
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}
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}
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```
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Alternatively, you can configure Terraform to use your binary by setting a [development override](https://developer.hashicorp.com/terraform/cli/config/config-file#development-overrides-for-provider-developers),
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so that the registry path to the provider is replaced with the path to the locally built provider.
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A `config.tfrc` file containing the necessary configuration can be created with the following commands:
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```bash
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bazel build //terraform-provider-constellation:terraform_rc
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cp bazel-bin/terraform-provider-constellation/config.tfrc .
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sed -i "s|@@TERRAFORM_PROVIDER_PATH@@|$(realpath bazel-bin/terraform-provider-constellation/tf_provider_/tf_provider)|g" config.tfrc
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```
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Afterwards, all Terraform commands that should use the local provider build should be prefixed with `TF_CLI_CONFIG_FILE=config.tfrc` like so:
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```bash
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TF_CLI_CONFIG_FILE=config.tfrc terraform apply
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...
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```
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## Testing the Terraform Provider
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Terraform acceptance tests can be run hermetically through Bazel (recommended):
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```bash
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bazel test --config=integration-only //terraform-provider-constellation/internal/provider:provider_test
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```
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The tests can also be run through Go, but the `TF_ACC` environment variable needs to be set to `1`, and the host's Terraform binary is used, which may produce inaccurate test results.
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```bash
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cd terraform-provider-constellation
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TF_ACC=1 go test -v ./...
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```
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