feat: workflow run dispatcher

internal/workflow/dispatcher/singleton.go

@@ -0,0 +1,31 @@
+package dispatcher
+
+import (
+	"context"
+	"sync"
+
+	"github.com/usual2970/certimate/internal/domain"
+)
+
+type workflowRepository interface {
+	GetById(ctx context.Context, id string) (*domain.Workflow, error)
+	Save(ctx context.Context, workflow *domain.Workflow) (*domain.Workflow, error)
+}
+
+type workflowRunRepository interface {
+	GetById(ctx context.Context, id string) (*domain.WorkflowRun, error)
+	Save(ctx context.Context, workflowRun *domain.WorkflowRun) (*domain.WorkflowRun, error)
+}
+
+var (
+	instance    *WorkflowDispatcher
+	intanceOnce sync.Once
+)
+
+func GetSingletonDispatcher(workflowRepo workflowRepository, workflowRunRepo workflowRunRepository) *WorkflowDispatcher {
+	intanceOnce.Do(func() {
+		instance = newWorkflowDispatcher(workflowRepo, workflowRunRepo)
+	})
+
+	return instance
+}