Add workflow execution process

internal/workflow/node-processor/workflow_processor.go

@@ -0,0 +1,64 @@
+package nodeprocessor
+
+import (
+	"context"
+
+	"github.com/usual2970/certimate/internal/domain"
+)
+
+type workflowProcessor struct {
+	workflow *domain.Workflow
+	logs     []RunLog
+}
+
+func NewWorkflowProcessor(workflow *domain.Workflow) *workflowProcessor {
+	return &workflowProcessor{
+		workflow: workflow,
+	}
+}
+
+func (w *workflowProcessor) Run(ctx context.Context) error {
+	ctx = WithWorkflowId(ctx, w.workflow.Id)
+	return w.runNode(ctx, w.workflow.Content)
+}
+
+func (w *workflowProcessor) runNode(ctx context.Context, node *domain.WorkflowNode) error {
+	current := node
+	for current != nil {
+		if current.Type == domain.WorkflowNodeTypeBranch {
+			for _, branch := range current.Branches {
+				if err := w.runNode(ctx, &branch); err != nil {
+					continue
+				}
+			}
+		}
+
+		if current.Type != domain.WorkflowNodeTypeBranch {
+			processor, err := GetProcessor(current)
+			if err != nil {
+				return err
+			}
+
+			err = processor.Run(ctx)
+
+			log := processor.Log(ctx)
+			if log != nil {
+				w.logs = append(w.logs, *log)
+			}
+
+			if err != nil {
+				return err
+			}
+		}
+
+	}
+	return nil
+}
+
+func WithWorkflowId(ctx context.Context, id string) context.Context {
+	return context.WithValue(ctx, "workflow_id", id)
+}
+
+func GetWorkflowId(ctx context.Context) string {
+	return ctx.Value("workflow_id").(string)
+}