模块化上传驱动，使用泛型优化工具库降低冗余

server/utility/simple/event.go

@@ -0,0 +1,51 @@
+package simple
+
+import (
+	"context"
+	"sync"
+)
+
+type EventFunc func(ctx context.Context, args ...interface{})
+
+type sEvent struct {
+	sync.Mutex
+	list map[string][]EventFunc // 所有事件的列表
+}
+
+var event *sEvent
+
+// InstanceEvent 事件实例
+func InstanceEvent() *sEvent {
+	if event == nil {
+		event = &sEvent{
+			list: make(map[string][]EventFunc),
+		}
+	}
+	return event
+}
+
+// Register 往一个分组中注册事件
+func (e *sEvent) Register(group string, callback EventFunc) {
+	e.Lock()
+	defer e.Unlock()
+	e.list[group] = append(e.list[group], callback)
+}
+
+// Call 回调一个分组的事件
+func (e *sEvent) Call(group string, ctx context.Context, args ...interface{}) {
+	if events, ok := e.list[group]; ok {
+		for _, f := range events {
+			f(ctx, args...)
+		}
+	}
+}
+
+// Remove 移动一个分组的事件
+func (e *sEvent) Remove(group string) {
+	delete(e.list, group)
+}
+
+// Clear 清空事件列表
+func (e *sEvent) Clear() {
+	e.list = make(map[string][]EventFunc)
+}