Add option to disable modules

TODO.txt

@@ -0,0 +1,3 @@
+
+Combine lambdas into 1
+- determine which integration to setup by parsing event data

modules/pagerduty/main.tf

@@ -1,5 +1,11 @@
+module "enabled" {
+  source  = "devops-workflow/boolean/local"
+  version = "0.1.2"
+  value   = "${var.enabled}"
+}
+
 locals {
-  enabled = "${length(var.service_key) > 0 ? 1 : 0}"
+  enabled = "${module.enabled.value && length(var.service_key) > 0 ? 1 : 0}"
 }
 
 data "template_file" "pagerduty_service" {

modules/pagerduty/variables.tf

@@ -3,6 +3,11 @@ variable "datadog_default" {
   default     = ""
 }
 
+variable "enabled" {
+  description = "Set to false to prevent the module from creating anything"
+  default     = true
+}
+
 variable "service_key" {
   description = "PagerDuty service integration key"
   default     = ""

modules/slack/main.tf

@@ -3,8 +3,14 @@
 #   Channel name is empty
 #   Channel name has format mon-<env>-<service short name> but nothing after second -
 
+module "enabled" {
+  source  = "devops-workflow/boolean/local"
+  version = "0.1.2"
+  value   = "${var.enabled}"
+}
+
 locals {
-  enabled = "${length(replace(var.channel_name, "/(mon-\\w+-)(.*)$/", "$2")) > 0 ? 1 : 0}"
+  enabled = "${module.enabled.value && length(replace(var.channel_name, "/(mon-\\w+-)(.*)$/", "$2")) > 0 ? 1 : 0}"
 }
 
 data "template_file" "slack_channel" {

modules/slack/variables.tf

@@ -3,6 +3,11 @@ variable "channel_name" {
   default     = ""
 }
 
+variable "enabled" {
+  description = "Set to false to prevent the module from creating anything"
+  default     = true
+}
+
 variable "s3_base" {
   description = "Base path in S3 bucket for Slack configuration pieces"
   default     = "datadog/integration/slack"