// DeleteController deletes a replication controller named 'name', requires that the controller
// already be stopped.
func DeleteController(ctx api.Context, name string, client client.Interface) error {
// TODO remove ctx in favor of just namespace string
controller, err := client.ReplicationControllers(api.Namespace(ctx)).Get(name)
if err != nil {
return err
}
if controller.Spec.Replicas != 0 {
return fmt.Errorf("controller has non-zero replicas (%d), please stop it first", controller.Spec.Replicas)
}
return client.ReplicationControllers(api.Namespace(ctx)).Delete(name)
}
// TestValidNamespace validates that namespace rules are enforced on a resource prior to create or update
func TestValidNamespace(t *testing.T) {
ctx := api.NewDefaultContext()
namespace, _ := api.NamespaceFrom(ctx)
resource := api.ReplicationController{}
if !api.ValidNamespace(ctx, &resource.ObjectMeta) {
t.Errorf("expected success")
}
if namespace != resource.Namespace {
t.Errorf("expected resource to have the default namespace assigned during validation")
}
resource = api.ReplicationController{ObjectMeta: api.ObjectMeta{Namespace: "other"}}
if api.ValidNamespace(ctx, &resource.ObjectMeta) {
t.Errorf("Expected error that resource and context errors do not match because resource has different namespace")
}
ctx = api.NewContext()
if api.ValidNamespace(ctx, &resource.ObjectMeta) {
t.Errorf("Expected error that resource and context errors do not match since context has no namespace")
}
ctx = api.NewContext()
ns := api.Namespace(ctx)
if ns != "" {
t.Errorf("Expected the empty string")
}
}
// RunController creates a new replication controller named 'name' which creates 'replicas' pods running 'image'.
func RunController(ctx api.Context, image, name string, replicas int, client client.Interface, portSpec string, servicePort int) error {
// TODO replace ctx with a namespace string
if servicePort > 0 && !util.IsDNSLabel(name) {
return fmt.Errorf("service creation requested, but an invalid name for a service was provided (%s). Service names must be valid DNS labels.", name)
}
ports, err := portsFromString(portSpec)
if err != nil {
return err
}
controller := &api.ReplicationController{
ObjectMeta: api.ObjectMeta{
Name: name,
},
Spec: api.ReplicationControllerSpec{
Replicas: replicas,
Selector: map[string]string{
"name": name,
},
Template: &api.PodTemplateSpec{
ObjectMeta: api.ObjectMeta{
Labels: map[string]string{
"name": name,
},
},
Spec: api.PodSpec{
Containers: []api.Container{
{
Name: strings.ToLower(name),
Image: image,
Ports: ports,
},
},
},
},
},
}
controllerOut, err := client.ReplicationControllers(api.Namespace(ctx)).Create(controller)
if err != nil {
return err
}
data, err := yaml.Marshal(controllerOut)
if err != nil {
return err
}
fmt.Print(string(data))
if servicePort > 0 {
svc, err := createService(ctx, name, servicePort, client)
if err != nil {
return err
}
data, err = yaml.Marshal(svc)
if err != nil {
return err
}
fmt.Printf(string(data))
}
return nil
}
// ResizeController resizes a controller named 'name' by setting replicas to 'replicas'.
func ResizeController(ctx api.Context, name string, replicas int, client client.Interface) error {
// TODO ctx is not needed, and should just be a namespace
controller, err := client.ReplicationControllers(api.Namespace(ctx)).Get(name)
if err != nil {
return err
}
controller.Spec.Replicas = replicas
controllerOut, err := client.ReplicationControllers(api.Namespace(ctx)).Update(controller)
if err != nil {
return err
}
data, err := yaml.Marshal(controllerOut)
if err != nil {
return err
}
fmt.Print(string(data))
return nil
}
// Update performs a rolling update of a collection of pods.
// 'name' points to a replication controller.
// 'client' is used for updating pods.
// 'updatePeriod' is the time between pod updates.
// 'imageName' is the new image to update for the template. This will work
// with the first container in the pod. There is no support yet for
// updating more complex replication controllers. If this is blank then no
// update of the image is performed.
func Update(ctx api.Context, name string, client client.Interface, updatePeriod time.Duration, imageName string) error {
// TODO ctx is not needed as input to this function, should just be 'namespace'
controller, err := client.ReplicationControllers(api.Namespace(ctx)).Get(name)
if err != nil {
return err
}
if len(imageName) != 0 {
controller.Spec.Template.Spec.Containers[0].Image = imageName
controller, err = client.ReplicationControllers(controller.Namespace).Update(controller)
if err != nil {
return err
}
}
s := labels.Set(controller.Spec.Selector).AsSelector()
podList, err := client.Pods(api.Namespace(ctx)).List(s)
if err != nil {
return err
}
expected := len(podList.Items)
if expected == 0 {
return nil
}
for _, pod := range podList.Items {
// We delete the pod here, the controller will recreate it. This will result in pulling
// a new Docker image. This isn't a full "update" but it's what we support for now.
err = client.Pods(pod.Namespace).Delete(pod.Name)
if err != nil {
return err
}
time.Sleep(updatePeriod)
}
return wait.Poll(time.Second*5, time.Second*300, func() (bool, error) {
podList, err := client.Pods(api.Namespace(ctx)).List(s)
if err != nil {
return false, err
}
return len(podList.Items) == expected, nil
})
}
// Implement ResourceWatcher.
func (storage *SimpleRESTStorage) Watch(ctx api.Context, label, field labels.Selector, resourceVersion string) (watch.Interface, error) {
storage.requestedLabelSelector = label
storage.requestedFieldSelector = field
storage.requestedResourceVersion = resourceVersion
storage.requestedResourceNamespace = api.Namespace(ctx)
if err := storage.errors["watch"]; err != nil {
return nil, err
}
storage.fakeWatch = watch.NewFake()
return storage.fakeWatch, nil
}
// Implement Redirector.
func (storage *SimpleRESTStorage) ResourceLocation(ctx api.Context, id string) (string, error) {
// validate that the namespace context on the request matches the expected input
storage.requestedResourceNamespace = api.Namespace(ctx)
if storage.expectedResourceNamespace != storage.requestedResourceNamespace {
return "", fmt.Errorf("Expected request namespace %s, but got namespace %s", storage.expectedResourceNamespace, storage.requestedResourceNamespace)
}
storage.requestedResourceLocationID = id
if err := storage.errors["resourceLocation"]; err != nil {
return "", err
}
return storage.resourceLocation, nil
}
func TestRESTCreate(t *testing.T) {
table := []struct {
ctx api.Context
event *api.Event
valid bool
}{
{
ctx: api.NewDefaultContext(),
event: testEvent("foo"),
valid: true,
}, {
ctx: api.NewContext(),
event: testEvent("bar"),
valid: true,
}, {
ctx: api.WithNamespace(api.NewContext(), "nondefault"),
event: testEvent("bazzzz"),
valid: false,
},
}
for _, item := range table {
_, rest := NewTestREST()
c, err := rest.Create(item.ctx, item.event)
if !item.valid {
if err == nil {
ctxNS := api.Namespace(item.ctx)
t.Errorf("unexpected non-error for %v (%v, %v)", item.event.Name, ctxNS, item.event.Namespace)
}
continue
}
if err != nil {
t.Errorf("%v: Unexpected error %v", item.event.Name, err)
continue
}
if !api.HasObjectMetaSystemFieldValues(&item.event.ObjectMeta) {
t.Errorf("storage did not populate object meta field values")
}
if e, a := item.event, (<-c).Object; !reflect.DeepEqual(e, a) {
t.Errorf("diff: %s", util.ObjectDiff(e, a))
}
// Ensure we implement the interface
_ = apiserver.ResourceWatcher(rest)
}
}
func createService(ctx api.Context, name string, port int, client client.Interface) (*api.Service, error) {
// TODO remove context in favor of just namespace string
svc := &api.Service{
ObjectMeta: api.ObjectMeta{
Name: name,
Labels: map[string]string{
"name": name,
},
},
Spec: api.ServiceSpec{
Port: port,
Selector: map[string]string{
"name": name,
},
},
}
svc, err := client.Services(api.Namespace(ctx)).Create(svc)
return svc, err
}
func (rs *REST) Create(ctx api.Context, obj runtime.Object) (<-chan apiserver.RESTResult, error) {
event, ok := obj.(*api.Event)
if !ok {
return nil, fmt.Errorf("invalid object type")
}
if api.Namespace(ctx) != "" {
if !api.ValidNamespace(ctx, &event.ObjectMeta) {
return nil, errors.NewConflict("event", event.Namespace, fmt.Errorf("event.namespace does not match the provided context"))
}
}
if errs := validation.ValidateEvent(event); len(errs) > 0 {
return nil, errors.NewInvalid("event", event.Name, errs)
}
api.FillObjectMetaSystemFields(ctx, &event.ObjectMeta)
return apiserver.MakeAsync(func() (runtime.Object, error) {
err := rs.registry.Create(ctx, event.Name, event)
if err != nil {
return nil, err
}
return rs.registry.Get(ctx, event.Name)
}), nil
}
func executeAPIRequest(ctx api.Context, method string, c *client.Client) bool {
storage, path, hasSuffix := storagePathFromArg(flag.Arg(1))
validStorage := checkStorage(storage)
verb := ""
setBody := false
var version string
printer := getPrinter()
switch method {
case "get":
verb = "GET"
if !validStorage || !hasSuffix {
glog.Fatalf("usage: kubecfg [OPTIONS] %s <%s>[/<id>]", method, prettyWireStorage())
}
case "list":
verb = "GET"
if !validStorage || hasSuffix {
glog.Fatalf("usage: kubecfg [OPTIONS] %s <%s>", method, prettyWireStorage())
}
case "delete":
verb = "DELETE"
if !validStorage || !hasSuffix {
glog.Fatalf("usage: kubecfg [OPTIONS] %s <%s>/<id>", method, prettyWireStorage())
}
case "create":
verb = "POST"
setBody = true
if !validStorage || hasSuffix {
glog.Fatalf("usage: kubecfg [OPTIONS] %s <%s>", method, prettyWireStorage())
}
case "update":
obj, err := c.Verb("GET").Namespace(api.Namespace(ctx)).Suffix(path).Do().Get()
if err != nil {
glog.Fatalf("error obtaining resource version for update: %v", err)
}
meta, err := meta.Accessor(obj)
if err != nil {
glog.Fatalf("error finding json base for update: %v", err)
}
version = meta.ResourceVersion()
verb = "PUT"
setBody = true
if !validStorage || !hasSuffix {
glog.Fatalf("usage: kubecfg [OPTIONS] %s <%s>/<id>", method, prettyWireStorage())
}
case "print":
data := readConfig(storage, c)
obj, err := latest.Codec.Decode(data)
if err != nil {
glog.Fatalf("error setting resource version: %v", err)
}
printer.PrintObj(obj, os.Stdout)
return true
default:
return false
}
r := c.Verb(verb).Namespace(api.Namespace(ctx)).Suffix(path)
if len(*selector) > 0 {
r.ParseSelectorParam("labels", *selector)
}
if len(*fieldSelector) > 0 {
r.ParseSelectorParam("fields", *fieldSelector)
}
if setBody {
if len(version) > 0 {
data := readConfig(storage, c)
obj, err := latest.Codec.Decode(data)
if err != nil {
glog.Fatalf("error setting resource version: %v", err)
}
jsonBase, err := meta.Accessor(obj)
if err != nil {
glog.Fatalf("error setting resource version: %v", err)
}
jsonBase.SetResourceVersion(version)
data, err = c.RESTClient.Codec.Encode(obj)
if err != nil {
glog.Fatalf("error setting resource version: %v", err)
}
r.Body(data)
} else {
r.Body(readConfig(storage, c))
}
}
result := r.Do()
obj, err := result.Get()
if err != nil {
glog.Fatalf("Got request error: %v\n", err)
return false
}
if err = printer.PrintObj(obj, os.Stdout); err != nil {
body, _ := result.Raw()
glog.Fatalf("Failed to print: %v\nRaw received object:\n%#v\n\nBody received: %v", err, obj, string(body))
}
fmt.Print("\n")
return true
}
// Bind just does a POST binding RPC.
func (b *binder) Bind(binding *api.Binding) error {
glog.V(2).Infof("Attempting to bind %v to %v", binding.PodID, binding.Host)
ctx := api.WithNamespace(api.NewContext(), binding.Namespace)
return b.Post().Namespace(api.Namespace(ctx)).Resource("bindings").Body(binding).Do().Error()
}
// UpdatePodStatus PUT pod RPC
func (s *status) UpdatePodStatus(pod *api.Pod) error {
glog.V(2).Infof("Attempting to update pod (%s) status to %s", pod.Name, pod.Status.Phase)
ctx := api.WithNamespace(api.NewContext(), pod.Namespace)
return s.Put().Namespace(api.Namespace(ctx)).Path("pods").Path(pod.Name).Body(pod).Do().Error()
}
