enable eventbride mode for multi-runner

Author: npalm

examples/multi-runner/main.tf

@@ -77,6 +77,10 @@ module "runners" {
     id             = var.github_app.id
     webhook_secret = random_id.random.hex
   }
+
+  # Deploy webhook in EventBridge mode
+  webhook_mode = "eventbridge"
+
   # enable this section for tracing
   # tracing_config = {
   #   mode                  = "Active"

modules/webhook/variables.tf

@@ -214,7 +214,6 @@ variable "matcher_config_parameter_store_tier" {
 variable "mode" {
   description = "The webhook and dispatching to runner queues supports two modes. Direct messages, are delivered directly to the runner queues. EventBridge messages are delivered to an EventBridge bus and then dispatched to the runner queues. Valid values are `direct` and `eventbridge`."
   type        = string
-  default     = "direct"
 
   validation {
     condition     = contains(["direct", "eventbridge"], var.mode)