func RunExpose(f *cmdutil.Factory, out io.Writer, cmd *cobra.Command, args []string) error {
var name, resource string
switch l := len(args); {
case l == 2:
resource, name = args[0], args[1]
default:
return cmdutil.UsageError(cmd, "the type and name of a resource to expose are required arguments")
}
namespace, err := f.DefaultNamespace()
if err != nil {
return err
}
client, err := f.Client()
if err != nil {
return err
}
generatorName := cmdutil.GetFlagString(cmd, "generator")
generator, found := kubectl.Generators[generatorName]
if !found {
return cmdutil.UsageError(cmd, fmt.Sprintf("generator %q not found.", generator))
}
names := generator.ParamNames()
params := kubectl.MakeParams(cmd, names)
if len(cmdutil.GetFlagString(cmd, "service-name")) == 0 {
params["name"] = name
} else {
params["name"] = cmdutil.GetFlagString(cmd, "service-name")
}
if s, found := params["selector"]; !found || len(s) == 0 || cmdutil.GetFlagInt(cmd, "port") < 1 {
mapper, _ := f.Object()
v, k, err := mapper.VersionAndKindForResource(resource)
if err != nil {
return err
}
mapping, err := mapper.RESTMapping(k, v)
if err != nil {
return err
}
if len(s) == 0 {
s, err := f.PodSelectorForResource(mapping, namespace, name)
if err != nil {
return err
}
params["selector"] = s
}
if cmdutil.GetFlagInt(cmd, "port") < 0 {
ports, err := f.PortsForResource(mapping, namespace, name)
if err != nil {
return err
}
if len(ports) == 0 {
return cmdutil.UsageError(cmd, "couldn't find a suitable port via --port flag or introspection")
}
if len(ports) > 1 {
return cmdutil.UsageError(cmd, "more than one port to choose from, please explicitly specify a port using the --port flag.")
}
params["port"] = ports[0]
}
}
if cmdutil.GetFlagBool(cmd, "create-external-load-balancer") {
params["create-external-load-balancer"] = "true"
}
err = kubectl.ValidateParams(names, params)
if err != nil {
return err
}
service, err := generator.Generate(params)
if err != nil {
return err
}
inline := cmdutil.GetFlagString(cmd, "overrides")
if len(inline) > 0 {
service, err = cmdutil.Merge(service, inline, "Service")
if err != nil {
return err
}
}
// TODO: extract this flag to a central location, when such a location exists.
if !cmdutil.GetFlagBool(cmd, "dry-run") {
service, err = client.Services(namespace).Create(service.(*api.Service))
if err != nil {
return err
}
}
return f.PrintObject(cmd, service, out)
}