tofu-remote-state action

This is one of a suite of OpenTofu related actions - find them at dflook/terraform-github-actions.

Retrieves the root-level outputs from an OpenTofu remote state.

Inputs

backend_type

The name of the OpenTofu plugin used for backend state
- Type: string
- Required
workspace

OpenTofu workspace to get the outputs for
- Type: string
- Optional
- Default: default
backend_config

List of OpenTofu backend config values, one per line.
```
with:
  backend_config: token=${{ secrets.BACKEND_TOKEN }}
```
- Type: string
- Optional
backend_config_file

List of OpenTofu backend config files to use, one per line. Paths should be relative to the GitHub Actions workspace
```
with:
  backend_config_file: prod.backend.tfvars
```
- Type: string
- Optional

Environment Variables

GITHUB_DOT_COM_TOKEN

This is used to specify a token for GitHub.com when the action is running on a GitHub Enterprise instance. This is only used for downloading OpenTofu binaries from GitHub.com. If this is not set, an unauthenticated request will be made to GitHub.com to download the binary, which may be rate limited.
- Type: string
- Optional

TERRAFORM_CLOUD_TOKENS

API tokens for cloud hosts, of the form <host>=<token>. Multiple tokens may be specified, one per line. These tokens may be used with the remote backend.

e.g:

env:
  TERRAFORM_CLOUD_TOKENS: app.terraform.io=${{ secrets.TF_CLOUD_TOKEN }}

With other registries:

env:
  TERRAFORM_CLOUD_TOKENS: |
    app.terraform.io=${{ secrets.TF_CLOUD_TOKEN }}
    tofu.example.com=${{ secrets.TF_REGISTRY_TOKEN }}

Type: string
Optional

Outputs

An output will be created for each root-level output in the OpenTofu remote state.

For example, with a remote state that has an output created using:

output "service_hostname" {
  value = "example.com"
}

Running this action will produce a service_hostname output with the same value. See tofu-output for details.

Example usage

This example sends a request to a url that has previously been provisioned by OpenTofu, by fetching the url from the remote state in S3.

name: Send request

on:
  push:
    branches:
      - main

env:
  AWS_ACCESS_KEY_ID: ${{ secrets.AWS_ACCESS_KEY_ID }}
  AWS_SECRET_ACCESS_KEY: ${{ secrets.AWS_SECRET_ACCESS_KEY }}

jobs:
  get_remote_state:
    runs-on: ubuntu-latest
    name: Run Test
    steps:
      - name: Get remote state
        uses: dflook/tofu-remote-state@v1
        id: remote-state
        with:
          backend_type: s3
          backend_config: |
            bucket=terraform-github-actions
            key=tofu-remote-state
            region=eu-west-2

      - name: Send request
        run: |
          curl "${{ steps.remote-state.outputs.url }}"