optionally specify event_bus_name

event.tf

@@ -1,72 +1,25 @@
 locals {
-  action_start     = "start"
-  action_stop      = "stop"
-  action_terminate = "terminate"
-  action_reboot    = "reboot"
-  action_switch    = "switch"
+  schedule_types = [
+    "start",
+    "stop",
+    "terminate",
+    "reboot",
+    "switch",
+  ]
 }
 
 module "event_start" {
-  source = "./event"
+  for_each = { for st in local.schedule_types : st => st }
+  source   = "./event"
 
   prefix        = var.prefix
   schedules     = var.schedules.start
-  schedule_type = local.action_start
+  schedule_type = each.value
   instance_list = var.instance_list
   lambda_arn    = aws_lambda_function.instanceswitcher.arn
   lambda_name   = aws_lambda_function.instanceswitcher.function_name
 
-  tags = local.tags_base
-}
-
-module "event_stop" {
-  source = "./event"
-
-  prefix        = var.prefix
-  schedules     = var.schedules.stop
-  schedule_type = local.action_stop
-  instance_list = var.instance_list
-  lambda_arn    = aws_lambda_function.instanceswitcher.arn
-  lambda_name   = aws_lambda_function.instanceswitcher.function_name
-
-  tags = local.tags_base
-}
-
-module "event_reboot" {
-  source = "./event"
-
-  prefix        = var.prefix
-  schedules     = var.schedules.reboot
-  schedule_type = local.action_reboot
-  instance_list = var.instance_list
-  lambda_arn    = aws_lambda_function.instanceswitcher.arn
-  lambda_name   = aws_lambda_function.instanceswitcher.function_name
-
-  tags = local.tags_base
-}
-
-module "event_terminate" {
-  source = "./event"
-
-  prefix        = var.prefix
-  schedules     = var.schedules.terminate
-  schedule_type = local.action_terminate
-  instance_list = var.instance_list
-  lambda_arn    = aws_lambda_function.instanceswitcher.arn
-  lambda_name   = aws_lambda_function.instanceswitcher.function_name
-
-  tags = local.tags_base
-}
-
-module "event_switch" {
-  source = "./event"
-
-  prefix        = var.prefix
-  schedules     = var.schedules.switch
-  schedule_type = local.action_switch
-  instance_list = var.instance_list
-  lambda_arn    = aws_lambda_function.instanceswitcher.arn
-  lambda_name   = aws_lambda_function.instanceswitcher.function_name
+  event_bus_name = var.event_bus_name
 
   tags = local.tags_base
 }

event/main.tf

@@ -4,6 +4,9 @@ variable "schedules" {}
 variable "instance_list" {}
 variable "lambda_arn" {}
 variable "lambda_name" {}
+variable "event_bus_name" {
+  default = null
+}
 variable "tags" {}
 
 resource "aws_cloudwatch_event_rule" "instanceswitcher" {
@@ -12,6 +15,8 @@ resource "aws_cloudwatch_event_rule" "instanceswitcher" {
   description         = "Instance Switcher rule: ${var.schedule_type} [${count.index}]"
   schedule_expression = "cron(${var.schedules[count.index]})"
 
+  event_bus_name = var.event_bus_name
+
   tags = var.tags
 }
 

input.tf

@@ -45,6 +45,11 @@ variable "policies_path" {
   default     = "/"
 }
 
+variable "event_bus_name" {
+  description = "The event bus to associate with the created rules. If you omit this, the default event bus is used."
+  default     = null
+}
+
 variable "tags" {
   description = "Custom tags to be added to the created resources"
   type        = map(string)