Allow S3 object modules to be disabled

Author: Steven Nemetz

examples/pagerduty-disabled/main.tf

@@ -0,0 +1,6 @@
+module "service" {
+  source       = "../../modules/pagerduty"
+  service_key  = ""
+  service_name = "testing_disable_tf"
+  s3_bucket    = "wiser-infra-automation"
+}

examples/pagerduty-disabled/providers.tf

@@ -0,0 +1,10 @@
+provider "aws" {
+  region = "us-west-2"
+
+  # Make it faster by skipping something
+  skip_get_ec2_platforms      = true
+  skip_metadata_api_check     = true
+  skip_region_validation      = true
+  skip_credentials_validation = true
+  skip_requesting_account_id  = true
+}

examples/pagerduty-svc2/main.tf

@@ -2,5 +2,5 @@ module "service" {
   source       = "../../modules/pagerduty"
   service_key  = "123456789012"
   service_name = "test-srv-2"
-  s3_bucket    = "wiser-one-ci"
+  s3_bucket    = "wiser-infra-automation"
 }

examples/slack-ch1/main.tf

@@ -1,5 +1,5 @@
 module "channel" {
   source       = "../../modules/slack"
   channel_name = "test-srv-1a"
-  s3_bucket    = "wiser-one-ci"
+  s3_bucket    = "wiser-infra-automation"
 }

examples/slack-ch2/main.tf

@@ -1,5 +1,5 @@
 module "channel" {
   source       = "../../modules/slack"
   channel_name = "test-srv-2"
-  s3_bucket    = "wiser-one-ci"
+  s3_bucket    = "wiser-infra-automation"
 }

examples/slack-disabled/main.tf

@@ -0,0 +1,5 @@
+module "channel" {
+  source       = "../../modules/slack"
+  channel_name = ""
+  s3_bucket    = "wiser-infra-automation"
+}

examples/slack-disabled/providers.tf

@@ -0,0 +1,10 @@
+provider "aws" {
+  region = "us-west-2"
+
+  # Make it faster by skipping something
+  skip_get_ec2_platforms      = true
+  skip_metadata_api_check     = true
+  skip_region_validation      = true
+  skip_credentials_validation = true
+  skip_requesting_account_id  = true
+}

modules/pagerduty/main.tf

@@ -1,4 +1,9 @@
+locals {
+  enabled = "${length(var.service_key) > 0 ? 1 : 0}"
+}
+
 data "template_file" "pagerduty_service" {
+  count    = "${local.enabled}"
   template = "${file("${path.module}/templates/pagerduty.json")}"
 
   vars {
@@ -9,6 +14,7 @@ data "template_file" "pagerduty_service" {
 }
 
 resource "aws_s3_bucket_object" "object" {
+  count  = "${local.enabled}"
   bucket = "${var.s3_bucket}"
   acl    = "bucket-owner-full-control"
 

modules/pagerduty/variables.tf

@@ -5,6 +5,7 @@ variable "datadog_default" {
 
 variable "service_key" {
   description = "PagerDuty service integration key"
+  default     = ""
 }
 
 variable "service_name" {

modules/slack/main.tf

@@ -1,4 +1,14 @@
+# Expect Slack channel name to be of format: mon-<env>-<service short name>
+# Auto disable if:
+#   Channel name is empty
+#   Channel name has format mon-<env>-<service short name> but nothing after second -
+
+locals {
+  enabled = "${length(replace(var.channel_name, "/(mon-\\w+-)(.*)$/", "$2")) > 0 ? 1 : 0}"
+}
+
 data "template_file" "slack_channel" {
+  count    = "${local.enabled}"
   template = "${file("${path.module}/templates/slack.json")}"
 
   vars {
@@ -7,6 +17,7 @@ data "template_file" "slack_channel" {
 }
 
 resource "aws_s3_bucket_object" "object" {
+  count  = "${local.enabled}"
   bucket = "${var.s3_bucket}"
   acl    = "bucket-owner-full-control"
 

modules/slack/variables.tf

@@ -1,5 +1,6 @@
 variable "channel_name" {
   description = "Slack channel name"
+  default     = ""
 }
 
 variable "s3_base" {