优化结构

internal/biz/actor.go

@@ -0,0 +1,19 @@
+package biz
+
+import "context"
+
+type actorContextKey struct{}
+
+type Actor struct {
+	UserID      uint
+	AuthorityID uint
+}
+
+func NewActorContext(ctx context.Context, actor Actor) context.Context {
+	return context.WithValue(ctx, actorContextKey{}, actor)
+}
+
+func ActorFromContext(ctx context.Context) (Actor, bool) {
+	actor, ok := ctx.Value(actorContextKey{}).(Actor)
+	return actor, ok
+}