terragen

Terragen is library and (eventually) tools for generating code in the Terraform / Terragrunt ecosystem.

Need to have a bunch of repetitive files for Terragrunt configurations? Don't want to maintain all of them? Terragen lets you define them in one place, using the same familiar HCL syntax, then generates the actual files for you.

Example Terragen configuration file:

terragrunt_configuration "test" {
  source = "mymodule"
  destination_path = "path/to/test/terragrunt.hcl"
  include "something" {
    path = "hello"
  }
}

terragrunt_include_all "all" {
  path = "world"
}

Using the terragen.GenerateFromFile function, you would get a file at the path path/to/test/terragrunt.hcl that looked like this:

terraform {
  source = "mymodule"
}

include "something" {
  path = "hello"
}
include "all" {
  path = "world"
}

Right now, Terragen supports a very limited set of syntax for generating minimal Terragrunt configuration files. The goal is to expand on this feature set, to eventually include things like:

• Support more complete Terragrunt configuration syntax, such as locals, dependencies, etc.
• Support generating Terraform files.
• Fetch file contents from remote sources, using something like go-getter.
• Include a CLI that will perform the generation for you.