Awesome

setup-opentofu

The opentofu/setup-opentofu action sets up OpenTofu CLI in your GitHub Actions workflow by:

Downloading the latest version of OpenTofu CLI and adding it to the PATH.
Configuring the CLI configuration file with a Terraform Cloud/Enterprise hostname and API token.
Installing a wrapper script to wrap subsequent calls of the tofu binary and expose its STDOUT, STDERR, and exit code as outputs named stdout, stderr, and exitcode respectively. (This can be optionally skipped if subsequent steps in the same job do not need to access the results of OpenTofu commands.)

After you've used the action, subsequent steps in the same job can run arbitrary OpenTofu commands using the GitHub Actions run syntax. This allows most OpenTofu commands to work exactly like they do on your local command line.

Experimental Status

By using the software in this repository (the "Software"), you acknowledge that: (1) the Software is still in development, may change, and has not been released as a commercial product by OpenTofu; (2) the Software is provided on an "as-is" basis, and may include bugs, errors, or other issues; (3) the Software is NOT INTENDED FOR PRODUCTION USE, use of the Software may result in unexpected results, loss of data, or other unexpected results, and OpenTofu disclaims any and all liability resulting from use of the Software.

Usage

This action can be run on ubuntu-latest, windows-latest, and macos-latest GitHub Actions runners. When running on windows-latest the shell should be set to Bash.

The default configuration installs the latest version of OpenTofu CLI and installs the wrapper script to wrap subsequent calls to the tofu binary:

steps:
- uses: opentofu/setup-opentofu@v1

A specific version of OpenTofu CLI can be installed:

steps:
- uses: opentofu/setup-opentofu@v1
  with:
    tofu_version: 1.6.0

Credentials for Terraform Cloud (app.terraform.io) can be configured:

steps:
- uses: opentofu/setup-opentofu@v1
  with:
    cli_config_credentials_token: ${{ secrets.TF_API_TOKEN }}

Credentials for Terraform Enterprise (TFE) can be configured:

steps:
- uses: opentofu/setup-opentofu@v1
  with:
    cli_config_credentials_hostname: 'tofu.example.com'
    cli_config_credentials_token: ${{ secrets.TF_API_TOKEN }}

The wrapper script installation can be skipped by setting the tofu_wrapper variable to false:

steps:
- uses: opentofu/setup-opentofu@v1
  with:
    tofu_wrapper: false

Subsequent steps can access outputs when the wrapper script is installed:

steps:
- uses: opentofu/setup-opentofu@v1

- run: tofu init

- id: plan
  run: tofu plan -no-color

- run: echo ${{ steps.plan.outputs.stdout }}
- run: echo ${{ steps.plan.outputs.stderr }}
- run: echo ${{ steps.plan.outputs.exitcode }}

Outputs can be used in subsequent steps to comment on the pull request:

Notice: There's a limit to the number of characters inside a GitHub comment (65535).

Due to that limitation, you might end up with a failed workflow run even if the plan succeeded.

Another approach is to append your plan into the $GITHUB_STEP_SUMMARY environment variable which supports markdown.

defaults:
  run:
    working-directory: ${{ env.tf_actions_working_dir }}
permissions:
  pull-requests: write
steps:
- uses: actions/checkout@v3
- uses: opentofu/setup-opentofu@v1

- name: OpenTofu fmt
  id: fmt
  run: tofu fmt -check
  continue-on-error: true

- name: OpenTofu Init
  id: init
  run: tofu init

- name: OpenTofu Validate
  id: validate
  run: tofu validate -no-color

- name: OpenTofu Plan
  id: plan
  run: tofu plan -no-color
  continue-on-error: true

- uses: actions/github-script@v6
  if: github.event_name == 'pull_request'
  env:
    PLAN: "tofu\n${{ steps.plan.outputs.stdout }}"
  with:
    github-token: ${{ secrets.GITHUB_TOKEN }}
    script: |
      const output = `#### OpenTofu Format and Style 🖌\`${{ steps.fmt.outcome }}\`
      #### OpenTofu Initialization ⚙️\`${{ steps.init.outcome }}\`
      #### OpenTofu Validation 🤖\`${{ steps.validate.outcome }}\`
      <details><summary>Validation Output</summary>

      \`\`\`\n
      ${{ steps.validate.outputs.stdout }}
      \`\`\`

      </details>

      #### OpenTofu Plan 📖\`${{ steps.plan.outcome }}\`

      <details><summary>Show Plan</summary>

      \`\`\`\n
      ${process.env.PLAN}
      \`\`\`

      </details>

      *Pusher: @${{ github.actor }}, Action: \`${{ github.event_name }}\`, Working Directory: \`${{ env.tf_actions_working_dir }}\`, Workflow: \`${{ github.workflow }}\`*`;

      github.rest.issues.createComment({
        issue_number: context.issue.number,
        owner: context.repo.owner,
        repo: context.repo.repo,
        body: output
      })

Instead of creating a new comment each time, you can also update an existing one:

defaults:
  run:
    working-directory: ${{ env.tf_actions_working_dir }}
permissions:
  pull-requests: write
steps:
- uses: actions/checkout@v3
- uses: opentofu/setup-opentofu@v1

- name: OpenTofu fmt
  id: fmt
  run: tofu fmt -check
  continue-on-error: true

- name: OpenTofu Init
  id: init
  run: tofu init

- name: OpenTofu Validate
  id: validate
  run: tofu validate -no-color

- name: OpenTofu Plan
  id: plan
  run: tofu plan -no-color
  continue-on-error: true

- uses: actions/github-script@v6
  if: github.event_name == 'pull_request'
  env:
    PLAN: "tofu\n${{ steps.plan.outputs.stdout }}"
  with:
    github-token: ${{ secrets.GITHUB_TOKEN }}
    script: |
      // 1. Retrieve existing bot comments for the PR
      const { data: comments } = await github.rest.issues.listComments({
        owner: context.repo.owner,
        repo: context.repo.repo,
        issue_number: context.issue.number,
      })
      const botComment = comments.find(comment => {
        return comment.user.type === 'Bot' && comment.body.includes('OpenTofu Format and Style')
      })

      // 2. Prepare format of the comment
      const output = `#### OpenTofu Format and Style 🖌\`${{ steps.fmt.outcome }}\`
      #### OpenTofu Initialization ⚙️\`${{ steps.init.outcome }}\`
      #### OpenTofu Validation 🤖\`${{ steps.validate.outcome }}\`
      <details><summary>Validation Output</summary>

      \`\`\`\n
      ${{ steps.validate.outputs.stdout }}
      \`\`\`

      </details>

      #### OpenTofu Plan 📖\`${{ steps.plan.outcome }}\`

      <details><summary>Show Plan</summary>

      \`\`\`\n
      ${process.env.PLAN}
      \`\`\`

      </details>

      *Pusher: @${{ github.actor }}, Action: \`${{ github.event_name }}\`, Working Directory: \`${{ env.tf_actions_working_dir }}\`, Workflow: \`${{ github.workflow }}\`*`;

      // 3. If we have a comment, update it, otherwise create a new one
      if (botComment) {
        github.rest.issues.updateComment({
          owner: context.repo.owner,
          repo: context.repo.repo,
          comment_id: botComment.id,
          body: output
        })
      } else {
        github.rest.issues.createComment({
          issue_number: context.issue.number,
          owner: context.repo.owner,
          repo: context.repo.repo,
          body: output
        })
      }

Inputs

The action supports the following inputs:

cli_config_credentials_hostname - (optional) The hostname of a Terraform Cloud/Enterprise instance to place within the credentials block of the OpenTofu CLI configuration file. Defaults to app.terraform.io.
cli_config_credentials_token - (optional) The API token for a Terraform Cloud/Enterprise instance to place within the credentials block of the OpenTofu CLI configuration file.
tofu_version - (optional) The version of OpenTofu CLI to install. Instead of a full version string, you can also specify a constraint string (see Semver Ranges for available range specifications). Examples are: <1.6.0-beta, ~1.6.0-alpha, 1.6.0-alpha2 (all three installing the latest available 1.6.0-alpha2 version). Prerelease versions can be specified and a range will stay within the given tag such as beta or rc. If no version is given, it will default to latest.
tofu_wrapper - (optional) Whether to install a wrapper to wrap subsequent calls of the tofu binary and expose its STDOUT, STDERR, and exit code as outputs named stdout, stderr, and exitcode respectively. Defaults to true.
github_token - (optional) Override the GitHub token read from the environment variable. Defaults to the value of the GITHUB_TOKEN environment variable unless running on Forgejo or Gitea.

Outputs

This action does not configure any outputs directly. However, when you set the tofu_wrapper input to true, the following outputs are available for subsequent steps that call the tofu binary:

stdout - The STDOUT stream of the call to the tofu binary.
stderr - The STDERR stream of the call to the tofu binary.
exitcode - The exit code of the call to the tofu binary.

License

Mozilla Public License v2.0