add request id generator and middleware file

pkg/requestid/request_id_container.go

@@ -0,0 +1,28 @@
+package requestid
+
+import (
+	"github.com/mayswind/lab/pkg/settings"
+)
+
+type RequestIdContainer struct {
+	Current RequestIdGenerator
+}
+
+var (
+	Container = &RequestIdContainer{}
+)
+
+func InitializeRequestIdGenerator(config *settings.Config) error {
+	generator, err := NewDefaultRequestIdGenerator(config)
+
+	if err != nil {
+		return err
+	}
+
+	Container.Current = generator
+	return nil
+}
+
+func (u *RequestIdContainer) GenerateRequestId(clientIpAddr string) string {
+	return u.Current.GenerateRequestId(clientIpAddr)
+}