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generate.go
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generate.go
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package generator
import (
"fmt"
"strconv"
kapi "k8s.io/kubernetes/pkg/api"
"k8s.io/kubernetes/pkg/kubectl"
"k8s.io/kubernetes/pkg/runtime"
"k8s.io/kubernetes/pkg/util/intstr"
"github.com/openshift/origin/pkg/route/api"
)
// RouteGenerator generates routes from a given set of parameters
type RouteGenerator struct{}
// RouteGenerator implements the kubectl.Generator interface for routes
var _ kubectl.Generator = RouteGenerator{}
// ParamNames returns the parameters required for generating a route
func (RouteGenerator) ParamNames() []kubectl.GeneratorParam {
return []kubectl.GeneratorParam{
{Name: "labels", Required: false},
{Name: "default-name", Required: true},
{Name: "port", Required: false},
{Name: "name", Required: false},
{Name: "hostname", Required: false},
{Name: "path", Required: false},
{Name: "wildcard-policy", Required: false},
}
}
// Generate accepts a set of parameters and maps them into a new route
func (RouteGenerator) Generate(genericParams map[string]interface{}) (runtime.Object, error) {
var (
labels map[string]string
err error
)
params := map[string]string{}
for key, value := range genericParams {
strVal, isString := value.(string)
if !isString {
return nil, fmt.Errorf("expected string, saw %v for '%s'", value, key)
}
params[key] = strVal
}
labelString, found := params["labels"]
if found && len(labelString) > 0 {
labels, err = kubectl.ParseLabels(labelString)
if err != nil {
return nil, err
}
}
name, found := params["name"]
if !found || len(name) == 0 {
name, found = params["default-name"]
if !found || len(name) == 0 {
return nil, fmt.Errorf("'name' is a required parameter.")
}
}
route := &api.Route{
ObjectMeta: kapi.ObjectMeta{
Name: name,
Labels: labels,
},
Spec: api.RouteSpec{
Host: params["hostname"],
WildcardPolicy: api.WildcardPolicyType(params["wildcard-policy"]),
Path: params["path"],
To: api.RouteTargetReference{
Name: params["default-name"],
},
},
}
portString := params["port"]
if len(portString) > 0 {
var targetPort intstr.IntOrString
if port, err := strconv.Atoi(portString); err == nil {
targetPort = intstr.FromInt(port)
} else {
targetPort = intstr.FromString(portString)
}
route.Spec.Port = &api.RoutePort{
TargetPort: targetPort,
}
}
return route, nil
}