fix: expose container to host only with labels (#1880)

Signed-off-by: ahmed.g <ahmed.g@adjoe.io>
Signed-off-by: TessaIO <ahmedgrati1999@gmail.com>

pkg/kobject/kobject.go

@@ -142,6 +142,7 @@ type ServiceConfig struct {
 	StopGracePeriod               string             `compose:"stop_grace_period"`
 	Build                         string             `compose:"build"`
 	BuildArgs                     map[string]*string `compose:"build-args"`
+	ExposeContainerToHost         bool               `compose:"kompose.controller.port.expose"`
 	ExposeService                 string             `compose:"kompose.service.expose"`
 	ExposeServicePath             string             `compose:"kompose.service.expose.path"`
 	BuildLabels                   map[string]string  `compose:"build-labels"`

pkg/loader/compose/compose.go

@@ -759,6 +759,8 @@ func parseKomposeLabels(labels map[string]string, serviceConfig *kobject.Service
 			serviceConfig.ServiceExternalTrafficPolicy = serviceExternalTypeTrafficPolicy
 		case LabelSecurityContextFsGroup:
 			serviceConfig.FsGroup = cast.ToInt64(value)
+		case LabelExposeContainerToHost:
+			serviceConfig.ExposeContainerToHost = cast.ToBool(value)
 		case LabelServiceExpose:
 			serviceConfig.ExposeService = strings.Trim(value, " ,")
 		case LabelNodePortPort:

pkg/loader/compose/utils.go

@@ -104,6 +104,8 @@ const (
 	LabelHpaMemory = "kompose.hpa.memory"
 	// LabelNameOverride defines the override resource name
 	LabelNameOverride = "kompose.service.name_override"
+	// LabelExposeContainerToHost defines whether to expose container to host or not using hostPort
+	LabelExposeContainerToHost = "kompose.controller.port.expose"
 )
 
 // load environment variables from compose file

pkg/transformer/kubernetes/kubernetes.go

@@ -654,10 +654,13 @@ func ConfigPorts(service kobject.ServiceConfig) []api.ContainerPort {
 		}
 		containerPort := api.ContainerPort{
 			ContainerPort: port.ContainerPort,
-			HostIP:        port.HostIP,
-			HostPort:      port.HostPort,
 			Protocol:      api.Protocol(port.Protocol),
 		}
+
+		if service.ExposeContainerToHost {
+			containerPort.HostIP = port.HostIP
+			containerPort.HostPort = port.HostPort
+		}
 		ports = append(ports, containerPort)
 		exist[port.ID()] = true
 	}

pkg/transformer/kubernetes/kubernetes_test.go

@@ -88,10 +88,11 @@ func newKomposeObject() kobject.KomposeObject {
 
 func newKomposeObjectHostPortProtocolConfig() kobject.ServiceConfig {
 	return kobject.ServiceConfig{
-		Name:          "nginx",
-		ContainerName: "nginx",
-		Image:         "nginx",
-		Port:          []kobject.Ports{{HostPort: 80, Protocol: string(api.ProtocolTCP), ContainerPort: 80}},
+		Name:                  "nginx",
+		ContainerName:         "nginx",
+		Image:                 "nginx",
+		Port:                  []kobject.Ports{{HostPort: 80, Protocol: string(api.ProtocolTCP), ContainerPort: 80}},
+		ExposeContainerToHost: true,
 	}
 }