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route.go
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route.go
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package util
import (
"fmt"
"strconv"
kapi "k8s.io/kubernetes/pkg/api"
kclientset "k8s.io/kubernetes/pkg/client/clientset_generated/internalclientset"
"k8s.io/kubernetes/pkg/util/intstr"
"github.com/openshift/origin/pkg/route/api"
)
// UnsecuredRoute will return a route with enough info so that it can direct traffic to
// the service provided by --service. Callers of this helper are responsible for providing
// tls configuration, path, and the hostname of the route.
func UnsecuredRoute(kc kclientset.Interface, namespace, routeName, serviceName, portString string) (*api.Route, error) {
if len(routeName) == 0 {
routeName = serviceName
}
svc, err := kc.Core().Services(namespace).Get(serviceName)
if err != nil {
if len(portString) == 0 {
return nil, fmt.Errorf("you need to provide a route port via --port when exposing a non-existent service")
}
return &api.Route{
ObjectMeta: kapi.ObjectMeta{
Name: routeName,
},
Spec: api.RouteSpec{
To: api.RouteTargetReference{
Name: serviceName,
},
Port: resolveRoutePort(portString),
},
}, nil
}
ok, port := supportsTCP(svc)
if !ok {
return nil, fmt.Errorf("service %q doesn't support TCP", svc.Name)
}
route := &api.Route{
ObjectMeta: kapi.ObjectMeta{
Name: routeName,
Labels: svc.Labels,
},
Spec: api.RouteSpec{
To: api.RouteTargetReference{
Name: serviceName,
},
},
}
// If the service has multiple ports and the user didn't specify --port,
// then default the route port to a service port name.
if len(port.Name) > 0 && len(portString) == 0 {
route.Spec.Port = resolveRoutePort(port.Name)
}
// --port uber alles
if len(portString) > 0 {
route.Spec.Port = resolveRoutePort(portString)
}
return route, nil
}
func resolveRoutePort(portString string) *api.RoutePort {
if len(portString) == 0 {
return nil
}
var routePort intstr.IntOrString
integer, err := strconv.Atoi(portString)
if err != nil {
routePort = intstr.FromString(portString)
} else {
routePort = intstr.FromInt(integer)
}
return &api.RoutePort{
TargetPort: routePort,
}
}
func supportsTCP(svc *kapi.Service) (bool, kapi.ServicePort) {
for _, port := range svc.Spec.Ports {
if port.Protocol == kapi.ProtocolTCP {
return true, port
}
}
return false, kapi.ServicePort{}
}