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Add Support for List of Tag Maps (#18)
* Updated to not used null_resource so that the null_resource provider isn't required * Updated to unclude the null provider version. Updated to allow for tagging of Autoscaling groups. It was really damn hard guys, really hard to getthat stupid thing expanding as a dynamic list. * updated formatting * Fixed up readme. added better example. Added commends. Added contributor section. fixed copy paste error in table. * Clarified and tested the usage of the tags * Updated the path to the module in the example * fixed formt * made module generic * made module generic * Fixed up the autoscaling group example to be very clear with many comments. * updated example in README * fixed formatting * changed example resource names from 'this' to 'default' * remove provider * Updated for consistency with other modules, fixed typoes * Updated variable description
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,122 @@ | ||
| ################################ | ||
| # terraform-null-label example # | ||
| ################################ | ||
| module "label" { | ||
| source = "../../" | ||
| namespace = "cp" | ||
| stage = "prod" | ||
| name = "app" | ||
|
|
||
| tags = { | ||
| BusinessUnit = "Finance" | ||
| ManagedBy = "Terraform" | ||
| } | ||
|
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| additional_tag_map = { | ||
| propagate_at_launch = "true" | ||
| } | ||
| } | ||
|
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| ####################### | ||
| # Launch template # | ||
| ####################### | ||
| resource "aws_launch_template" "default" { | ||
| # terraform-null-label example used here: Set template name prefix | ||
| name_prefix = "${module.label.id}-" | ||
| image_id = "${data.aws_ami.amazon_linux.id}" | ||
| instance_type = "t2.micro" | ||
| instance_initiated_shutdown_behavior = "terminate" | ||
|
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| vpc_security_group_ids = ["${data.aws_security_group.default.id}"] | ||
|
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| monitoring { | ||
| enabled = false | ||
| } | ||
|
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| # terraform-null-label example used here: Set tags on volumes | ||
| tag_specifications { | ||
| resource_type = "volume" | ||
| tags = "${module.label.tags}" | ||
| } | ||
| } | ||
|
|
||
| ###################### | ||
| # Autoscaling group # | ||
| ###################### | ||
| resource "aws_autoscaling_group" "default" { | ||
| # terraform-null-label example used here: Set ASG name prefix | ||
| name_prefix = "${module.label.id}-" | ||
| vpc_zone_identifier = ["${data.aws_subnet_ids.all.ids}"] | ||
| max_size = "1" | ||
| min_size = "1" | ||
| desired_capacity = "1" | ||
|
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| launch_template = { | ||
| id = "${aws_launch_template.default.id}" | ||
| version = "$$Latest" | ||
| } | ||
|
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| # terraform-null-label example used here: Set tags on ASG and EC2 Servers | ||
| tags = ["${module.label.tags_as_list_of_maps}"] | ||
| } | ||
|
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| # terraform-null-label example used here: Output list of tags applied in each format | ||
| output "tags_as_list_of_maps" { | ||
| value = ["${module.label.tags_as_list_of_maps}"] | ||
| } | ||
|
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| output "tags" { | ||
| value = ["${module.label.tags}"] | ||
| } | ||
|
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| ################################ | ||
| # Provider # | ||
| ################################ | ||
|
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| provider "aws" { | ||
| region = "eu-west-1" | ||
| version = "~> 1.17" | ||
|
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| # Make it faster by skipping unneeded checks here | ||
| skip_get_ec2_platforms = true | ||
| skip_metadata_api_check = true | ||
| skip_region_validation = true | ||
| skip_credentials_validation = true | ||
| skip_requesting_account_id = true | ||
| } | ||
|
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| ############################################################## | ||
| # Data sources to get VPC, subnets and security group details | ||
| ############################################################## | ||
| data "aws_vpc" "default" { | ||
| default = true | ||
| } | ||
|
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| data "aws_subnet_ids" "all" { | ||
| vpc_id = "${data.aws_vpc.default.id}" | ||
| } | ||
|
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| data "aws_security_group" "default" { | ||
| vpc_id = "${data.aws_vpc.default.id}" | ||
| name = "default" | ||
| } | ||
|
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| data "aws_ami" "amazon_linux" { | ||
| most_recent = true | ||
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| filter { | ||
| name = "name" | ||
|
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| values = [ | ||
| "amzn-ami-hvm-*-x86_64-gp2", | ||
| ] | ||
| } | ||
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| filter { | ||
| name = "owner-alias" | ||
|
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| values = [ | ||
| "amazon", | ||
| ] | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,15 +1,30 @@ | ||
| resource "null_resource" "default" { | ||
| count = "${var.enabled == "true" ? 1 : 0}" | ||
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| triggers = { | ||
| id = "${lower(join(var.delimiter, compact(concat(list(var.namespace, var.stage, var.name), var.attributes))))}" | ||
| name = "${lower(format("%v", var.name))}" | ||
| namespace = "${lower(format("%v", var.namespace))}" | ||
| stage = "${lower(format("%v", var.stage))}" | ||
| attributes = "${lower(format("%v", join(var.delimiter, compact(var.attributes))))}" | ||
| } | ||
|
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| lifecycle { | ||
| create_before_destroy = true | ||
| } | ||
| locals { | ||
| enabled = "${var.enabled == "true" ? true : false }" | ||
| id = "${local.enabled ? lower(join(var.delimiter, compact(concat(list(var.namespace, var.stage, var.name), var.attributes)))) : ""}" | ||
| name = "${local.enabled ? lower(format("%v", var.name)) : ""}" | ||
| namespace = "${local.enabled ? lower(format("%v", var.namespace)) : ""}" | ||
| stage = "${local.enabled ? lower(format("%v", var.stage)) : ""}" | ||
| attributes = "${local.enabled ? lower(format("%v", join(var.delimiter, compact(var.attributes)))) : ""}" | ||
|
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| tags = "${ | ||
| merge( | ||
| map( | ||
| "Name", "${local.id}", | ||
| "Namespace", "${local.namespace}", | ||
| "Stage", "${local.stage}" | ||
| ), var.tags | ||
| ) | ||
| }" | ||
|
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| tags_as_list_of_maps = ["${null_resource.tags_as_list_of_maps.*.triggers}"] | ||
| } | ||
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| resource "null_resource" "tags_as_list_of_maps" { | ||
| count = "${length(keys(local.tags))}" | ||
|
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| triggers = "${merge(map( | ||
| "key", "${element(keys(local.tags), count.index)}", | ||
| "value", "${element(values(local.tags), count.index)}" | ||
| ), | ||
| var.additional_tag_map)}" | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,40 +1,37 @@ | ||
| output "id" { | ||
| value = "${join("", null_resource.default.*.triggers.id)}" | ||
| value = "${local.id}" | ||
| description = "Disambiguated ID" | ||
| } | ||
|
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| output "name" { | ||
| value = "${join("", null_resource.default.*.triggers.name)}" | ||
| value = "${local.name}" | ||
| description = "Normalized name" | ||
| } | ||
|
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| output "namespace" { | ||
| value = "${join("", null_resource.default.*.triggers.namespace)}" | ||
| value = "${local.namespace}" | ||
| description = "Normalized namespace" | ||
| } | ||
|
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| output "stage" { | ||
| value = "${join("", null_resource.default.*.triggers.stage)}" | ||
| value = "${local.stage}" | ||
| description = "Normalized stage" | ||
| } | ||
|
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| output "attributes" { | ||
| value = "${join("", null_resource.default.*.triggers.attributes)}" | ||
| value = "${local.attributes}" | ||
| description = "Normalized attributes" | ||
| } | ||
|
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| # Merge input tags with our tags. | ||
| # Note: `Name` has a special meaning in AWS and we need to disamgiuate it by using the computed `id` | ||
| output "tags" { | ||
| value = "${ | ||
| merge( | ||
| map( | ||
| "Name", "${join("", null_resource.default.*.triggers.id)}", | ||
| "Namespace", "${join("", null_resource.default.*.triggers.namespace)}", | ||
| "Stage", "${join("", null_resource.default.*.triggers.stage)}" | ||
| ), var.tags | ||
| ) | ||
| }" | ||
| value = "${local.tags}" | ||
|
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| description = "Normalized Tag map" | ||
| } | ||
|
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| output "tags_as_list_of_maps" { | ||
| value = ["${local.tags_as_list_of_maps}"] | ||
| description = "Additional tags as a list of maps, which can be used in several AWS resources" | ||
| } |
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