minor changes

pkg/api/v1/schema/schema.go

@@ -14,6 +14,13 @@ healthCheckNodePort
 
 const Version = "v1"
 
+type ProxyProtocol string
+
+const (
+	ProxyProtocolV1 ProxyProtocol = "v1"
+	ProxyProtocolV2               = "v2"
+)
+
 type LoadBalancer struct {
 	Name    string  `json:"name,omitempty"`
 	IP      string  `json:"ip,omitempty"`
@@ -29,11 +36,11 @@ func NewLoadBalancerFromBytes(b []byte) (lb *LoadBalancer, err error) {
 }
 
 type Options struct {
-	Frontend           []string `json:"frontend,omitempty"`
-	Backend            []string `json:"backend,omitempty"`
-	ProxyProtocol      string   `json:"proxyProtocol,omitempty"`
-	CheckProxyProtocol bool     `json:"checkProxyProtocol,omitempty"`
-	DefaultServer      string   `json:"defaultServer,omitempty`
+	Frontend           []string      `json:"frontend,omitempty"`
+	Backend            []string      `json:"backend,omitempty"`
+	ProxyProtocol      ProxyProtocol `json:"proxyProtocol,omitempty"`
+	CheckProxyProtocol bool          `json:"checkProxyProtocol,omitempty"`
+	DefaultServer      string        `json:"defaultServer,omitempty`
 }
 
 type Port struct {
@@ -144,6 +151,11 @@ func (lb LoadBalancer) ValidateServer() error {
 	if lb.CIDR == "" {
 		return errors.New("LoadBalancer.CIDR can not be empty")
 	}
+	switch lb.Options.ProxyProtocol {
+	case "", ProxyProtocolV1, ProxyProtocolV2:
+	default:
+		return errors.New(`LoadBalancer.Options.ProxyProtocol invalid value. (allowed: "", "v1", "v2")`)
+	}
 	err := lb.ValidateClient()
 	if err != nil {
 		return err