feat: support external traffic policy

Signed-off-by: AhmedGrati <ahmedgrati1999@gmail.com>

pkg/loader/compose/compose.go

@@ -698,6 +698,13 @@ func parseKomposeLabels(labels map[string]string, serviceConfig *kobject.Service
 			}
 
 			serviceConfig.ServiceType = serviceType
+		case LabelServiceExternalTrafficPolicy:
+			serviceExternalTypeTrafficPolicy, err := handleServiceExternalTrafficPolicy(value)
+			if err != nil {
+				return errors.Wrap(err, "handleServiceExternalTrafficPolicy failed")
+			}
+
+			serviceConfig.ServiceExternalTrafficPolicy = serviceExternalTypeTrafficPolicy
 		case LabelServiceExpose:
 			serviceConfig.ExposeService = strings.Trim(strings.ToLower(value), " ,")
 		case LabelNodePortPort:

pkg/loader/compose/utils.go

@@ -32,6 +32,8 @@ import (
 const (
 	// LabelServiceType defines the type of service to be created
 	LabelServiceType = "kompose.service.type"
+	// LabelServiceExternalTrafficPolicy defines the external policy traffic of service to be created
+	LabelServiceExternalTrafficPolicy = "kompose.service.external-traffic-policy"
 	// LabelServiceGroup defines the group of services in a single pod
 	LabelServiceGroup = "kompose.service.group"
 	// LabelNodePortPort defines the port value for NodePort service
@@ -151,6 +153,17 @@ func handleServiceType(ServiceType string) (string, error) {
 	}
 }
 
+func handleServiceExternalTrafficPolicy(ServiceExternalTrafficPolicyType string) (string, error) {
+	switch strings.ToLower(ServiceExternalTrafficPolicyType) {
+	case "", "cluster":
+		return string(api.ServiceExternalTrafficPolicyTypeCluster), nil
+	case "local":
+		return string(api.ServiceExternalTrafficPolicyTypeLocal), nil
+	default:
+		return "", errors.New("Unknown value " + ServiceExternalTrafficPolicyType + " , supported values are 'local, cluster'")
+	}
+}
+
 func normalizeContainerNames(svcName string) string {
 	return strings.ToLower(svcName)
 }