// GetPodJobs returns a list of jobs managing a pod. Returns an error only if no matching jobs are found.
func (s *StoreToJobLister) GetPodJobs(pod *api.Pod) (jobs []extensions.Job, err error) {
var selector labels.Selector
var job extensions.Job
if len(pod.Labels) == 0 {
err = fmt.Errorf("no jobs found for pod %v because it has no labels", pod.Name)
return
}
for _, m := range s.Store.List() {
job = *m.(*extensions.Job)
if job.Namespace != pod.Namespace {
continue
}
selector, _ = extensions.LabelSelectorAsSelector(job.Spec.Selector)
if !selector.Matches(labels.Set(pod.Labels)) {
continue
}
jobs = append(jobs, job)
}
if len(jobs) == 0 {
err = fmt.Errorf("could not find jobs for pod %s in namespace %s with labels: %v", pod.Name, pod.Namespace, pod.Labels)
}
return
}
// GetPodDaemonSets returns a list of daemon sets managing a pod.
// Returns an error if and only if no matching daemon sets are found.
func (s *StoreToDaemonSetLister) GetPodDaemonSets(pod *api.Pod) (daemonSets []extensions.DaemonSet, err error) {
var selector labels.Selector
var daemonSet extensions.DaemonSet
if len(pod.Labels) == 0 {
err = fmt.Errorf("no daemon sets found for pod %v because it has no labels", pod.Name)
return
}
for _, m := range s.Store.List() {
daemonSet = *m.(*extensions.DaemonSet)
if daemonSet.Namespace != pod.Namespace {
continue
}
selector, err = extensions.LabelSelectorAsSelector(daemonSet.Spec.Selector)
if err != nil {
// this should not happen if the DaemonSet passed validation
return nil, err
}
// If a daemonSet with a nil or empty selector creeps in, it should match nothing, not everything.
if selector.Empty() || !selector.Matches(labels.Set(pod.Labels)) {
continue
}
daemonSets = append(daemonSets, daemonSet)
}
if len(daemonSets) == 0 {
err = fmt.Errorf("could not find daemon set for pod %s in namespace %s with labels: %v", pod.Name, pod.Namespace, pod.Labels)
}
return
}
// TODO: Move this back to scheduler as a helper function that takes a Store,
// rather than a method of StoreToServiceLister.
func (s *StoreToServiceLister) GetPodServices(pod *api.Pod) (services []api.Service, err error) {
var selector labels.Selector
var service api.Service
for _, m := range s.Store.List() {
service = *m.(*api.Service)
// consider only services that are in the same namespace as the pod
if service.Namespace != pod.Namespace {
continue
}
if service.Spec.Selector == nil {
// services with nil selectors match nothing, not everything.
continue
}
selector = labels.Set(service.Spec.Selector).AsSelector()
if selector.Matches(labels.Set(pod.Labels)) {
services = append(services, service)
}
}
if len(services) == 0 {
err = fmt.Errorf("could not find service for pod %s in namespace %s with labels: %v", pod.Name, pod.Namespace, pod.Labels)
}
return
}
// GetPodReplicaSets returns a list of ReplicaSets managing a pod. Returns an error only if no matching ReplicaSets are found.
func (s *StoreToReplicaSetLister) GetPodReplicaSets(pod *api.Pod) (rss []extensions.ReplicaSet, err error) {
var selector labels.Selector
var rs extensions.ReplicaSet
if len(pod.Labels) == 0 {
err = fmt.Errorf("no ReplicaSets found for pod %v because it has no labels", pod.Name)
return
}
for _, m := range s.Store.List() {
rs = *m.(*extensions.ReplicaSet)
if rs.Namespace != pod.Namespace {
continue
}
selector, err = extensions.LabelSelectorAsSelector(rs.Spec.Selector)
if err != nil {
err = fmt.Errorf("failed to convert pod selector to selector: %v", err)
return
}
// If a ReplicaSet with a nil or empty selector creeps in, it should match nothing, not everything.
if selector.Empty() || !selector.Matches(labels.Set(pod.Labels)) {
continue
}
rss = append(rss, rs)
}
if len(rss) == 0 {
err = fmt.Errorf("could not find ReplicaSet for pod %s in namespace %s with labels: %v", pod.Name, pod.Namespace, pod.Labels)
}
return
}
// GetDeploymentsForRC returns a list of deployments managing a replication controller. Returns an error only if no matching deployments are found.
func (s *StoreToDeploymentLister) GetDeploymentsForRC(rc *api.ReplicationController) (deployments []extensions.Deployment, err error) {
var selector labels.Selector
var d extensions.Deployment
if len(rc.Labels) == 0 {
err = fmt.Errorf("no deployments found for replication controller %v because it has no labels", rc.Name)
return
}
// TODO: MODIFY THIS METHOD so that it checks for the podTemplateSpecHash label
for _, m := range s.Store.List() {
d = *m.(*extensions.Deployment)
if d.Namespace != rc.Namespace {
continue
}
labelSet := labels.Set(d.Spec.Selector)
selector = labels.Set(d.Spec.Selector).AsSelector()
// If a deployment with a nil or empty selector creeps in, it should match nothing, not everything.
if labelSet.AsSelector().Empty() || !selector.Matches(labels.Set(rc.Labels)) {
continue
}
deployments = append(deployments, d)
}
if len(deployments) == 0 {
err = fmt.Errorf("could not find deployments set for replication controller %s in namespace %s with labels: %v", rc.Name, rc.Namespace, rc.Labels)
}
return
}
// GetPodControllers returns a list of replication controllers managing a pod. Returns an error only if no matching controllers are found.
func (s *StoreToReplicationControllerLister) GetPodControllers(pod *api.Pod) (controllers []api.ReplicationController, err error) {
var selector labels.Selector
var rc api.ReplicationController
if len(pod.Labels) == 0 {
err = fmt.Errorf("no controllers found for pod %v because it has no labels", pod.Name)
return
}
for _, m := range s.Store.List() {
rc = *m.(*api.ReplicationController)
if rc.Namespace != pod.Namespace {
continue
}
labelSet := labels.Set(rc.Spec.Selector)
selector = labels.Set(rc.Spec.Selector).AsSelector()
// If an rc with a nil or empty selector creeps in, it should match nothing, not everything.
if labelSet.AsSelector().Empty() || !selector.Matches(labels.Set(pod.Labels)) {
continue
}
controllers = append(controllers, rc)
}
if len(controllers) == 0 {
err = fmt.Errorf("could not find controller for pod %s in namespace %s with labels: %v", pod.Name, pod.Namespace, pod.Labels)
}
return
}
func (s storeReplicationControllersNamespacer) List(selector labels.Selector) (controllers []api.ReplicationController, err error) {
for _, c := range s.store.List() {
rc := *(c.(*api.ReplicationController))
if s.namespace == api.NamespaceAll || s.namespace == rc.Namespace {
if selector.Matches(labels.Set(rc.Labels)) {
controllers = append(controllers, rc)
}
}
}
return
}
// Please note that selector is filtering among the pods that have gotten into
// the store; there may have been some filtering that already happened before
// that.
func (s storePodsNamespacer) List(selector labels.Selector) (pods api.PodList, err error) {
list := api.PodList{}
for _, m := range s.store.List() {
pod := m.(*api.Pod)
if s.namespace == api.NamespaceAll || s.namespace == pod.Namespace {
if selector.Matches(labels.Set(pod.Labels)) {
list.Items = append(list.Items, *pod)
}
}
}
return list, nil
}
// Please note that selector is filtering among the pods that have gotten into
// the store; there may have been some filtering that already happened before
// that.
//
// TODO: converge on the interface in pkg/client.
func (s *StoreToPodLister) List(selector labels.Selector) (pods []*api.Pod, err error) {
// TODO: it'd be great to just call
// s.Pods(api.NamespaceAll).List(selector), however then we'd have to
// remake the list.Items as a []*api.Pod. So leave this separate for
// now.
for _, m := range s.Store.List() {
pod := m.(*api.Pod)
if selector.Matches(labels.Set(pod.Labels)) {
pods = append(pods, pod)
}
}
return pods, nil
}
// Validates the given template and ensures that it is in accordance with the desired selector and replicas.
func ValidatePodTemplateSpecForReplicaSet(template *api.PodTemplateSpec, selector labels.Selector, replicas int, fldPath *field.Path) field.ErrorList {
allErrs := field.ErrorList{}
if template == nil {
allErrs = append(allErrs, field.Required(fldPath, ""))
} else {
if !selector.Empty() {
// Verify that the ReplicaSet selector matches the labels in template.
labels := labels.Set(template.Labels)
if !selector.Matches(labels) {
allErrs = append(allErrs, field.Invalid(fldPath.Child("metadata", "labels"), template.Labels, "`selector` does not match template `labels`"))
}
}
allErrs = append(allErrs, apivalidation.ValidatePodTemplateSpec(template, fldPath)...)
if replicas > 1 {
allErrs = append(allErrs, apivalidation.ValidateReadOnlyPersistentDisks(template.Spec.Volumes, fldPath.Child("spec", "volumes"))...)
}
// RestartPolicy has already been first-order validated as per ValidatePodTemplateSpec().
if template.Spec.RestartPolicy != api.RestartPolicyAlways {
allErrs = append(allErrs, field.NotSupported(fldPath.Child("spec", "restartPolicy"), template.Spec.RestartPolicy, []string{string(api.RestartPolicyAlways)}))
}
}
return allErrs
}