added proxyprotocol parser

pkg/api/v1/schema/schema.go

@@ -25,6 +25,18 @@ const (
 	ProxyProtocolV2               = "v2"
 )
 
+func ParseProxyProtocol(s string) (pp ProxyProtocol, err error) {
+	switch s {
+	case "v1":
+		pp = ProxyProtocolV1
+	case "v2":
+		pp = ProxyProtocolV2
+	default:
+		err = errors.New("invalid proxyprotocol version")
+	}
+	return
+}
+
 type LoadBalancer struct {
 	Name    string  `json:"name,omitempty"`
 	IP      string  `json:"ip,omitempty"`