Summary

A Terraform open-source module to automate the creation of tags, the Name key and other attributes across resources in AWS, the Name prefix is based on a customizable order passed by the prefix_order variable with a default value of ["enviroemnt", "project_name", "region", "name", "attributes"] and a configurable delimiter variable with value of -.

Features

The module supports the following:

• Optionally limiting the id variable length to a specific number of chars by modifying the prefix_lenght_limit variable, defaulted to 0 which means no limit.
• Optionally configure the case letter of tag_key_case and tag_value_case, defaults to title, lower respectively.
• A random string will be created using the random provider that will be used in case of creating a truncated id, prefix_legnth_limit !=0.
• Supporting a configurable regex_substitute_chars variable which will replace any non-alphanumeric chars passed to enviroment, project_name, region and, name, defaulted to "/[^(a-z)(A-Z)(0-9)$]/".
• A validation mechanism to validate some input variables e.g. tag_key_case, tag_value_case, region
• Optional attributes which will be added automatically to tags variable and id

Usage

Example 1

module "label" {
  source = "github.com/obytes/terraform-aws-tag.git?ref=v1.0.7"
  environment = "dev"
  project_name = "obytes"
  region = "me-south-1"
  delimiter = "+"
  attributes  = ["private"]
  enabled = true
  prefix_length_limit = 10
}

The above example will generate the below output that can be passed to another label module to create a new id that has the base values used on label_1 module

context = {
  "additional_tags" = {}
  "attributes" = [
    "private",
  ]
  "delimiter" = "+"
  "enabled" = "true"
  "environment" = "dev"
  "prefix_length_limit" = 10
  "prefix_order" = [
    "environment",
    "project_name",
    "region",
    "name",
  ]
  "project_name" = "obytes"
  "region" = "me-south-1"
  "tag_key_case" = "title"
  "tag_value_case" = "lower"
  "tags" = {}
}
id = dev+n4rnkc
tags = {
  "Attributes" = "private"
  "Environment" = "dev"
  "Name" = "dev+n4rnkc"
  "Project_name" = "obytes"
  "Region" = "mesouth1"
}

Check the example folder for more details scenarios.

Requirements

Name	Version
terraform	>=0.13.0
random	3.1.0

Providers

Name	Version
random	3.1.0

Modules

No modules.

Resources

Name	Type
random_string.this	resource

Inputs

Name	Description	Type	Default	Required
additional_tags	Additional Tags, tags which can be accessed by module..tags_as_list not added to ..	map(string)	{}	no
attributes	A list of attributes e.g. private, shared, cost_center	list(string)	null	no
company_name	The company name or client name, could be fullName or abbreviation such as ex	string	null	no
context	n/a	any	{ "additional_tags": {}, "attributes": [], "company_name": null, "delimiter": null, "enabled": true, "environment": null, "prefix_length_limit": 0, "prefix_order": [ "environment", "project_name", "company_name", "region", "attributes" ], "project_name": null, "random_string": null, "regex_substitute_chars": null, "region": null, "tag_key_case": "title", "tag_value_case": "lower", "tags": {} }	no
delimiter	Delimiter to be used between project_name, environment, region and, name. Defaults to - (hyphen). Set to "" to use no delimiter at all.	string	null	no
enabled	A boolean to enable or disable tagging/labeling module	string	null	no
environment	Environment, the environment name such as 'stg', 'prd', 'dev'	string	null	no
prefix_length_limit	The minimum number of chars required for the id/Name desired (minimum =7) Set it to 0 for unlimited number of chars, full_id	number	null	no
prefix_order	The order of the Name tag Defaults to, ["environment", "project_name", "region", "name"] at least one should be provided	list(string)	null	no
project_name	The project name or organization name, could be fullName or abbreviation such as ex	string	null	no
random_string	A Random string, that will be appended to id in case of using prefix_length_limit Using the default value which is null, the string will be created using the random terraform provider	string	null	no
regex_substitute_chars	a regex to replace empty chars in project_name, environment, region and, name defaults to "\[a-zA-Z0-9]\", replacing any chars other than chars and digits	string	null	no
region	Environment name such as us-east-1, ap-west-1, eu-central-1	string	null	no
tag_key_case	The letter case of output tag keys Possible values are lower', upperandtitle<br>defaults to title<br>	string	null	no
tag_value_case	The letter case of output tag values Possible values are lower', upperandtitle<br>defaults to lower<br>	string	null	no
tags	Tags, Tags to be generated by this module which can be access by module..tags e.g. map('CostCenter', 'Production')	map(string)	{}	no

Outputs

Name	Description
additional_tags	Additional Tags, tags which can be accessed by module..tags_as_list not added to ..
attributes	A list of attributes e.g. private, shared, cost_center
company_name	The name of the company or client
context	A context to be used as an input for other modules
delimiter	Delimiter to be used between project_name, environment, region and, name.
enabled	A boolean to enable or disable tagging/labeling module
environment	Environment name passed to module such as us-east-1, ap-west-1, eu-central-1
id	ID, restricted to prefix_length_limit if set otherwise, full ID
id_full	Full ID, not restricted to prefix_length_limit
prefix_order	an ordered list of strings that forms the ID attribute
project_name	The project name or organization name, could be fullName or abbreviation such as ex
random_string	A random string, used in id and id_short in case of setting prefix_lenght_limit
regex_substitute_chars	Regex, to be used for id substitution in case of using prefix_length_limit
tags	Tags, Tags to be generated by this module which can be access by module..tags e.g. map('CostCenter', 'Production')