实现基础的DDoS防护

internal/firewalls/nftables/set_batch.go

@@ -0,0 +1,36 @@
+// Copyright 2022 Liuxiangchao iwind.liu@gmail.com. All rights reserved.
+
+package nftables
+
+import (
+	nft "github.com/google/nftables"
+)
+
+type SetBatch struct {
+	conn   *Conn
+	rawSet *nft.Set
+}
+
+func (this *SetBatch) AddElement(key []byte, options *ElementOptions) error {
+	var rawElement = nft.SetElement{
+		Key: key,
+	}
+	if options != nil {
+		rawElement.Timeout = options.Timeout
+	}
+	return this.conn.Raw().SetAddElements(this.rawSet, []nft.SetElement{
+		rawElement,
+	})
+}
+
+func (this *SetBatch) DeleteElement(key []byte) error {
+	return this.conn.Raw().SetDeleteElements(this.rawSet, []nft.SetElement{
+		{
+			Key: key,
+		},
+	})
+}
+
+func (this *SetBatch) Commit() error {
+	return this.conn.Commit()
+}