nvkv/tf-unused

Find unused variables in terraform modules

tf-unused's Issues

Does this tool work?

I may be missing something very obvious but I can't make this tool report any unused variables at all.

Basic replication:

variable test {
    type = string
}

resource null_resource name {
  triggers = {
    trigger = value
  }

  provisioner "local-exec" {
    command = "command"
  }
}

Running tf-unused displays nothing and returns 0.

Feature request: find unused `data` resources also

If a data resource is present in the HCL but not attributes from it are used then it could also be removed.

Feature request : manage tfvars

Your tool is very useful and I use it a lot. However, I feel like a little feature is missing about tfvars file.

In my project, I have multiple tfvars :

• One to create variables (full definition with default_value, name and description)
• One to assign variables values

The second one looks like :

my_var = "value"
my_second_var = 5
...

tf-unused deals very well with variable definitions but not when I assign value to them.
It would be very helpful to add the ability to get a record when a value is assigned to a variable but there isn't a definition for it.

Thanks !

Make this a pre-commit hook!

This is great. I suggest making it a pre-commit hook: https://pre-commit.com/.

If not I can fork and do it as well. Just requires a config file and maybe a dockerfile since rust isn't officially supported. Might be able to just grab the binary, not sure.

Edit: I'm converting some other tools like this to pre-commit hooks. I can submit a PR after tinkering a bit.