[Feature request] extra args injection to terraform command

[kertzi]

Hello,
Your tool looks promising but to make it even more flexible I would like to suggest following new feature:

Is it possible to add configuration which allows flags to be passed to terraform plan/apply command.

Use case:
We use .tfvars files which holds values for each environment so when terraform plan or terraform apply
is executed it will need -var-file parameter which have environment specific values.
For example final apply command looks like:

terraform plan -var-file=devel.tfvars

Is it possible to add configuration parameter to .tfmigrate.hcl or directly tfmigrate command which enables these
extra parameters injected to terraform plan/apply calls?

Suggestion:

tfmigrate {
  migration_dir = "./migrations"
  plan_extra_args = "-var-file=somevars.tfvars"
  apply_extra_args="-var-file=somevars.tfvars"
}

[minamijoyo]

@kertzi Thank you for sharing your use-case!

I think it's better to add a new attribute in a migration file rather than tfmigrate's configuration file because a var file is typically related to its workspace.

For a workaround, you can pass any CLI flags to the terraform command via environment variables named TF_CLI_ARGS_<name>. For example TF_CLI_ARGS_plan="-var-file=somevars.tfvars"
https://www.terraform.io/docs/cli/config/environment-variables.html#tf_cli_args-and-tf_cli_args_name

You can also change environment variables per directory with direnv. For how to integrate them with tfmigrate, see my comment here: #3 (comment)

[kertzi]

@kertzi Thank you for sharing your use-case!

I think it's better to add a new attribute in a migration file rather than tfmigrate's configuration file because a var file is typically related to its workspace.

For a workaround, you can pass any CLI flags to the terraform command via environment variables named TF_CLI_ARGS_<name>. For example TF_CLI_ARGS_plan="-var-file=somevars.tfvars"
https://www.terraform.io/docs/cli/config/environment-variables.html#tf_cli_args-and-tf_cli_args_name

You can also change environment variables per directory with direnv. For how to integrate them with tfmigrate, see my comment here: #3 (comment)

Thanks for reply, I will check that!

[minamijoyo]

I'm going to close this because there has been no activity on this recently. Please feel free to reopen this if you have any questions or suggestions. Thanks!