wtf

wtf is a wrapper for terraform. It allows to have multiple versions of terraform installed and helps you to run the version required for your project.

Features

• Install new (or old) versions of terraform using wtf install [terraform_version].
• Run terraform via wtf exec ... (using the regular terraform commands and options) to execute terraform or create a symlink from terraform to wtf for convenience.
• Detect if a project has used pre or post v0.12.0 terraform syntax automatically and run the best fitting terraform version automatically.
• Force a certain version by putting your version constraints (such as >= 0.12.0) in a .terraform-version file in your project folder.
• If required you can define a wrapper script template in wtf's configuration file. The template will be rendered to a temp file and then executed rather than terraform itself.

Install

Binary Download

Navigate to Releases, grab the package that matches your operating system and achitecture. Unpack the archive and put the binary file somewhere in your $PATH

From Source

Make sure you have go installed, then run:

# go get -u https://github.com/unprofession-al/wtf

Run

Just run wtf to get some basic help:

# wtf 
Wrapper for Terraform: tansparently work with multiple terrafrom versions

Usage:
  wtf [command]

Available Commands:
  config      print configuration
  configure   configure interactively
  exec        run correct version of terraform
  help        Help about any command
  install     install a version of terraform

Flags:
  -h, --help   help for wtf

Use "wtf [command] --help" for more information about a command

Configure

Basic options can be configured in the configuration found at cat ~/.config/wtf/config.yaml. Heres an example:

---
version_contraint_file_name: .terraform-version
binary_store_path: ~/.bin/terraform.versions/
detect_syntax: true
wrapper:
  script_template: |
    #!/bin/bash
    verbose={{.Verbose}}
    if [ -f $(pwd)/secrets.yml ]; then
      if [ "$verbose" = true ]; then
        echo "SUMMON PASSWORDS FOR TERRAFORM"
      fi
      summon -p ~/.bin/summon-gopass {{.Command}}
    else
      if [ "$verbose" = true ]; then
        echo "RUN PLAIN TERRAFORM"
      fi
      {{.Command}}
    fi