// Create registers the given ReplicationController.
func (rs *REST) Create(ctx api.Context, obj runtime.Object) (<-chan apiserver.RESTResult, error) {
	controller, ok := obj.(*api.ReplicationController)
	if !ok {
		return nil, fmt.Errorf("not a replication controller: %#v", obj)
	}
	if !api.ValidNamespace(ctx, &controller.ObjectMeta) {
		return nil, errors.NewConflict("controller", controller.Namespace, fmt.Errorf("Controller.Namespace does not match the provided context"))
	}

	if len(controller.Name) == 0 {
		controller.Name = util.NewUUID().String()
	}
	if errs := validation.ValidateReplicationController(controller); len(errs) > 0 {
		return nil, errors.NewInvalid("replicationController", controller.Name, errs)
	}

	api.FillObjectMetaSystemFields(ctx, &controller.ObjectMeta)

	return apiserver.MakeAsync(func() (runtime.Object, error) {
		err := rs.registry.CreateController(ctx, controller)
		if err != nil {
			return nil, err
		}
		return rs.registry.GetController(ctx, controller.Name)
	}), nil
}

func (rs *REST) Create(ctx api.Context, obj runtime.Object) (<-chan apiserver.RESTResult, error) {
	minion, ok := obj.(*api.Minion)
	if !ok {
		return nil, fmt.Errorf("not a minion: %#v", obj)
	}
	if minion.Name == "" {
		return nil, fmt.Errorf("ID should not be empty: %#v", minion)
	}

	minion.CreationTimestamp = util.Now()

	return apiserver.MakeAsync(func() (runtime.Object, error) {
		err := rs.registry.CreateMinion(ctx, minion)
		if err != nil {
			return nil, err
		}
		minionName := minion.Name
		minion, err := rs.registry.GetMinion(ctx, minionName)
		if err == ErrNotHealty {
			return rs.toApiMinion(minionName), nil
		}
		if minion == nil {
			return nil, ErrDoesNotExist
		}
		if err != nil {
			return nil, err
		}
		return minion, nil
	}), nil
}

func (rs *REST) Create(obj runtime.Object) (<-chan runtime.Object, error) {
	minion, ok := obj.(*api.Minion)
	if !ok {
		return nil, fmt.Errorf("not a minion: %#v", obj)
	}
	if minion.ID == "" {
		return nil, fmt.Errorf("ID should not be empty: %#v", minion)
	}

	minion.CreationTimestamp = util.Now()

	return apiserver.MakeAsync(func() (runtime.Object, error) {
		err := rs.registry.Insert(minion.ID)
		if err != nil {
			return nil, err
		}
		contains, err := rs.registry.Contains(minion.ID)
		if err != nil {
			return nil, err
		}
		if contains {
			return rs.toApiMinion(minion.ID), nil
		}
		return nil, fmt.Errorf("unable to add minion %#v", minion)
	}), nil
}

// Update satisfies the RESTStorage interface.
func (rs *REST) Update(ctx api.Context, obj runtime.Object) (<-chan apiserver.RESTResult, error) {
	minion, ok := obj.(*api.Node)
	if !ok {
		return nil, fmt.Errorf("not a minion: %#v", obj)
	}
	// This is hacky, but minions don't really have a namespace, but kubectl currently automatically
	// stuffs one in there.  Fix it here temporarily until we fix kubectl
	if minion.Namespace == api.NamespaceDefault {
		minion.Namespace = api.NamespaceNone
	}
	// Clear out the self link, if specified, since it's not in the registry either.
	minion.SelfLink = ""

	// TODO: GetMinion will health check the minion, but we shouldn't require the minion to be
	// running for updating labels.
	oldMinion, err := rs.registry.GetMinion(ctx, minion.Name)
	if err != nil {
		return nil, err
	}
	if errs := validation.ValidateMinionUpdate(oldMinion, minion); len(errs) > 0 {
		return nil, kerrors.NewInvalid("minion", minion.Name, errs)
	}

	return apiserver.MakeAsync(func() (runtime.Object, error) {
		err := rs.registry.UpdateMinion(ctx, minion)
		if err != nil {
			return nil, err
		}
		return rs.registry.GetMinion(ctx, minion.Name)
	}), nil
}

func (rs *REST) Update(ctx api.Context, obj runtime.Object) (<-chan apiserver.RESTResult, error) {
	service := obj.(*api.Service)
	if !api.ValidNamespace(ctx, &service.ObjectMeta) {
		return nil, errors.NewConflict("service", service.Namespace, fmt.Errorf("Service.Namespace does not match the provided context"))
	}
	if errs := validation.ValidateService(service, rs.registry, ctx); len(errs) > 0 {
		return nil, errors.NewInvalid("service", service.Name, errs)
	}
	return apiserver.MakeAsync(func() (runtime.Object, error) {
		cur, err := rs.registry.GetService(ctx, service.Name)
		if err != nil {
			return nil, err
		}
		if service.Spec.PortalIP != cur.Spec.PortalIP {
			// TODO: Would be nice to pass "field is immutable" to users.
			el := errors.ValidationErrorList{errors.NewFieldInvalid("spec.portalIP", service.Spec.PortalIP)}
			return nil, errors.NewInvalid("service", service.Name, el)
		}
		// Copy over non-user fields.
		service.Spec.ProxyPort = cur.Spec.ProxyPort
		// TODO: check to see if external load balancer status changed
		err = rs.registry.UpdateService(ctx, service)
		if err != nil {
			return nil, err
		}
		return rs.registry.GetService(ctx, service.Name)
	}), nil
}

func (sr *ServiceRegistryStorage) Create(obj interface{}) (<-chan interface{}, error) {
	srv := obj.(api.Service)
	if srv.ID == "" {
		return nil, fmt.Errorf("ID should not be empty: %#v", srv)
	}
	return apiserver.MakeAsync(func() (interface{}, error) {
		// TODO: Consider moving this to a rectification loop, so that we make/remove external load balancers
		// correctly no matter what http operations happen.
		if srv.CreateExternalLoadBalancer {
			var balancer cloudprovider.TCPLoadBalancer
			var ok bool
			if sr.cloud != nil {
				balancer, ok = sr.cloud.TCPLoadBalancer()
			}
			if ok && balancer != nil {
				hosts, err := sr.machines.List()
				if err != nil {
					return nil, err
				}
				err = balancer.CreateTCPLoadBalancer(srv.ID, "us-central1", srv.Port, hosts)
				if err != nil {
					return nil, err
				}
			} else {
				return nil, fmt.Errorf("requested an external service, but no cloud provider supplied.")
			}
		}
		// TODO actually wait for the object to be fully created here.
		err := sr.registry.CreateService(srv)
		if err != nil {
			return nil, err
		}
		return sr.registry.GetService(srv.ID)
	}), nil
}

func (rs *RegistryStorage) Delete(id string) (<-chan interface{}, error) {
	service, err := rs.registry.GetService(id)
	if err != nil {
		return nil, err
	}
	return apiserver.MakeAsync(func() (interface{}, error) {
		rs.deleteExternalLoadBalancer(service)
		return &api.Status{Status: api.StatusSuccess}, rs.registry.DeleteService(id)
	}), nil
}

func (rs *REST) Delete(id string) (<-chan runtime.Object, error) {
	service, err := rs.registry.GetService(id)
	if err != nil {
		return nil, err
	}
	return apiserver.MakeAsync(func() (runtime.Object, error) {
		rs.deleteExternalLoadBalancer(service)
		return &api.Status{Status: api.StatusSuccess}, rs.registry.DeleteService(id)
	}), nil
}

func (rs *REST) Delete(ctx api.Context, id string) (<-chan apiserver.RESTResult, error) {
	service, err := rs.registry.GetService(ctx, id)
	if err != nil {
		return nil, err
	}
	rs.portalMgr.Release(net.ParseIP(service.Spec.PortalIP))
	return apiserver.MakeAsync(func() (runtime.Object, error) {
		rs.deleteExternalLoadBalancer(service)
		return &api.Status{Status: api.StatusSuccess}, rs.registry.DeleteService(ctx, id)
	}), nil
}

func (storage *MinionRegistryStorage) Delete(id string) (<-chan interface{}, error) {
	exists, err := storage.registry.Contains(id)
	if !exists {
		return nil, ErrDoesNotExist
	}
	if err != nil {
		return nil, err
	}
	return apiserver.MakeAsync(func() (interface{}, error) {
		return api.Status{Status: api.StatusSuccess}, storage.registry.Delete(id)
	}), nil
}

func (rs *RegistryStorage) Update(obj interface{}) (<-chan interface{}, error) {
	pod := obj.(*api.Pod)
	if errs := api.ValidatePod(pod); len(errs) > 0 {
		return nil, apiserver.NewInvalidErr("pod", pod.ID, errs)
	}
	return apiserver.MakeAsync(func() (interface{}, error) {
		if err := rs.registry.UpdatePod(*pod); err != nil {
			return nil, err
		}
		return rs.registry.GetPod(pod.ID)
	}), nil
}

func (storage *PodRegistryStorage) Create(pod interface{}) (<-chan interface{}, error) {
	podObj := pod.(api.Pod)
	if len(podObj.ID) == 0 {
		return nil, fmt.Errorf("id is unspecified: %#v", pod)
	}
	machine, err := storage.scheduler.Schedule(podObj)
	if err != nil {
		return nil, err
	}

	return apiserver.MakeAsync(func() interface{} { return pod }), storage.registry.CreatePod(machine, podObj)
}

// Create attempts to make the assignment indicated by the binding it recieves.
func (b *BindingStorage) Create(obj interface{}) (<-chan interface{}, error) {
	binding, ok := obj.(*api.Binding)
	if !ok {
		return nil, fmt.Errorf("incorrect type: %#v", obj)
	}
	return apiserver.MakeAsync(func() (interface{}, error) {
		if err := b.registry.ApplyBinding(binding); err != nil {
			return nil, err
		}
		return &api.Status{Status: api.StatusSuccess}, nil
	}), nil
}

func (rs *REST) Update(obj runtime.Object) (<-chan runtime.Object, error) {
	pod := obj.(*api.Pod)
	if errs := validation.ValidatePod(pod); len(errs) > 0 {
		return nil, errors.NewInvalid("pod", pod.ID, errs)
	}
	return apiserver.MakeAsync(func() (runtime.Object, error) {
		if err := rs.registry.UpdatePod(pod); err != nil {
			return nil, err
		}
		return rs.registry.GetPod(pod.ID)
	}), nil
}

// Create attempts to make the assignment indicated by the binding it recieves.
func (b *REST) Create(ctx api.Context, obj runtime.Object) (<-chan apiserver.RESTResult, error) {
	binding, ok := obj.(*api.Binding)
	if !ok {
		return nil, fmt.Errorf("incorrect type: %#v", obj)
	}
	return apiserver.MakeAsync(func() (runtime.Object, error) {
		if err := b.registry.ApplyBinding(ctx, binding); err != nil {
			return nil, err
		}
		return &api.Status{Status: api.StatusSuccess}, nil
	}), nil
}

func (rs *RegistryStorage) Update(obj interface{}) (<-chan interface{}, error) {
	pod := obj.(*api.Pod)
	if errs := api.ValidatePod(pod); len(errs) > 0 {
		return nil, fmt.Errorf("Validation errors: %v", errs)
	}
	return apiserver.MakeAsync(func() (interface{}, error) {
		if err := rs.registry.UpdatePod(*pod); err != nil {
			return nil, err
		}
		return rs.waitForPodRunning(*pod)
	}), nil
}

func (sr *ServiceRegistryStorage) Update(obj interface{}) (<-chan interface{}, error) {
	srv := obj.(api.Service)
	if srv.ID == "" {
		return nil, fmt.Errorf("ID should not be empty: %#v", srv)
	}
	return apiserver.MakeAsync(func() (interface{}, error) {
		// TODO: check to see if external load balancer status changed
		err := sr.registry.UpdateService(srv)
		if err != nil {
			return nil, err
		}
		return sr.registry.GetService(srv.ID)
	}), nil
}

func (rs *REST) Update(obj runtime.Object) (<-chan runtime.Object, error) {
	srv := obj.(*api.Service)
	if errs := validation.ValidateService(srv); len(errs) > 0 {
		return nil, errors.NewInvalid("service", srv.ID, errs)
	}
	return apiserver.MakeAsync(func() (runtime.Object, error) {
		// TODO: check to see if external load balancer status changed
		err := rs.registry.UpdateService(srv)
		if err != nil {
			return nil, err
		}
		return rs.registry.GetService(srv.ID)
	}), nil
}

func (storage *PodRegistryStorage) Update(obj interface{}) (<-chan interface{}, error) {
	pod := obj.(api.Pod)
	if len(pod.ID) == 0 {
		return nil, fmt.Errorf("id is unspecified: %#v", pod)
	}

	return apiserver.MakeAsync(func() (interface{}, error) {
		err := storage.registry.UpdatePod(pod)
		if err != nil {
			return nil, err
		}
		return storage.registry.GetPod(pod.ID)
	}), nil
}

func (storage *PodRegistryStorage) Update(obj interface{}) (<-chan interface{}, error) {
	pod := obj.(api.Pod)
	if len(pod.ID) == 0 {
		return nil, fmt.Errorf("ID should not be empty: %#v", pod)
	}

	return apiserver.MakeAsync(func() (interface{}, error) {
		err := storage.registry.UpdatePod(pod)
		if err != nil {
			return nil, err
		}
		return storage.waitForPodRunning(pod)
	}), nil
}