initial import

core/load/sheddergroup.go

@@ -0,0 +1,36 @@
+package load
+
+import (
+	"io"
+
+	"zero/core/syncx"
+)
+
+type ShedderGroup struct {
+	options []ShedderOption
+	manager *syncx.ResourceManager
+}
+
+func NewShedderGroup(opts ...ShedderOption) *ShedderGroup {
+	return &ShedderGroup{
+		options: opts,
+		manager: syncx.NewResourceManager(),
+	}
+}
+
+func (g *ShedderGroup) GetShedder(key string) Shedder {
+	shedder, _ := g.manager.GetResource(key, func() (closer io.Closer, e error) {
+		return nopCloser{
+			Shedder: NewAdaptiveShedder(g.options...),
+		}, nil
+	})
+	return shedder.(Shedder)
+}
+
+type nopCloser struct {
+	Shedder
+}
+
+func (c nopCloser) Close() error {
+	return nil
+}