terraform-null-labels

Terraform module to provide consistent label names and tags for resources.

This is similar to label except:

• This accepts a list of names, instead of a string. And returns lists.
• This uses null-resource instead of locals. This was required to be able to use count.

The goal is to keep label and labels in sync and update both at the same time for any changes. Where this is possible.

A single name format will not solve every use case, so multiple variants are returned and there is a few options to affect how they get build. The general name convention is {organization}-{environment}-{name}-{attributes}. Name is required, the other 3 can be turned on/off individually. The delimiter (-) can be changed

All devops-workflow modules will eventually use this or label.

NOTE: null refers to this using null_resource

Terraform registry: https://registry.terraform.io/modules/devops-workflow/labels/null

Usage:

Basic Example

module "names" {
  source        = "devops-workflow/labels/null"
  version       = "0.0.1"
  names         = ["name1", "name2"]
  environment   = "qa"
}

This will create 2 id with the values of qa-name1 and qa-name2

S3 Example

variable "names" {
  default = ["data1", "data2"]
}

module "s3-name" {
  source        = "devops-workflow/labels/null"
  version       = "0.0.1"
  names         = "${var.names}"
  environment   = "qa"
  organization  = "corp"
  namespace-org = "true"
}

This will create 2 id with the values of corp-qa-data1 and corp-qa-data2

Now reference labels outputs to create the S3 buckets

resource "aws_s3_bucket" "data" {
  count   = "${length(var.names)}"
  bucket  = "${element(module.s3-name.id, count.index)}"
}

All Variables Example

Using in a module and exposing all settings to upstream caller.

module "labels" {
  source        = "devops-workflow/labels/null"
  version       = "0.0.1"
  organization  = "${var.organization}"
  names         = "${var.names}"
  namespace-env = "${var.namespace-env}"
  namespace-org = "${var.namespace-org}"
  environment   = "${var.environment}"
  delimiter     = "${var.delimiter}"
  attributes    = "${var.attributes}"
  tags          = "${var.tags}"
}