feat: adding workflow_dispatch webhook event

controllers/horizontal_runner_autoscaler_webhook.go

@@ -183,6 +183,15 @@ func (autoscaler *HorizontalRunnerAutoscalerGitHubWebhook) Handle(w http.Respons
 				"action", e.GetAction(),
 			)
 		}
+	case *gogithub.WorkflowDispatchEvent:
+		target, err = autoscaler.getScaleUpTarget(
+			context.TODO(),
+			log,
+			e.Repo.GetName(),
+			e.Repo.Owner.GetLogin(),
+			e.Repo.Owner.GetType(),
+			autoscaler.WorkflowDispatchEvent(e),
+		)
 	case *gogithub.WorkflowJobEvent:
 		if workflowJob := e.GetWorkflowJob(); workflowJob != nil {
 			log = log.WithValues(

controllers/horizontal_runner_autoscaler_webhook_on_workflow_dispatch.go

@@ -0,0 +1,35 @@
+package controllers
+
+import (
+	"github.com/actions-runner-controller/actions-runner-controller/api/v1alpha1"
+	"github.com/google/go-github/v37/github"
+)
+
+// MatchPushEvent()
+func (autoscaler *HorizontalRunnerAutoscalerGitHubWebhook) MatchWorkflowDispatchEvent(event *github.PushEvent) func(scaleUpTrigger v1alpha1.ScaleUpTrigger) bool {
+	return func(scaleUpTrigger v1alpha1.ScaleUpTrigger) bool {
+		g := scaleUpTrigger.GitHubEvent
+
+		if g == nil {
+			return false
+		}
+
+		WorkflowDispatch := g.WorkflowDispatch
+
+		if WorkflowDispatch == nil {
+			return false
+		}
+
+		// event.Ref = Branch that received dispatch
+		// event.Ref = refs/heads/branch-name
+		if !matchTriggerConditionAgainstEvent(WorkflowDispatch.Branches, event.Ref) {
+			return false
+		}
+
+		if matchTriggerConditionAgainstEvent(WorkflowDispatch.BranchesIgnore, event.Ref) {
+			return false
+		}
+
+		return true
+	}
+}