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kubectl: Use v1.5-compatible ownership logic when listing dependents.

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In particular, we should not assume ControllerRefs are necessarily set.
However, we can still use ControllerRefs that do exist to avoid
interfering with controllers that do use it.
This commit is contained in:
Anthony Yeh
2017-03-16 11:43:09 -07:00
parent 725ec0cc5e
commit fa23729a6d
7 changed files with 159 additions and 40 deletions
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109
pkg/controller/deployment/util/deployment_util.go
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@@ -518,14 +518,15 @@ func GetAllReplicaSets(deployment *extensions.Deployment, c clientset.Interface)
return oldRSes, allOldRSes, newRS, nil
}
// GetAllReplicaSetsV15 is a compatibility function that behaves the way
// GetAllReplicaSets() used to in v1.5.x.
// GetAllReplicaSetsV15 is a compatibility function that emulates the behavior
// from v1.5.x (list matching objects by selector) except that it leaves out
// objects that are explicitly marked as being controlled by something else.
func GetAllReplicaSetsV15(deployment *extensions.Deployment, c clientset.Interface) ([]*extensions.ReplicaSet, []*extensions.ReplicaSet, *extensions.ReplicaSet, error) {
rsList, err := ListReplicaSetsV15(deployment, rsListFromClient(c))
if err != nil {
return nil, nil, nil, err
}
podList, err := ListPodsV15(deployment, podListFromClient(c))
podList, err := ListPodsV15(deployment, rsList, podListFromClient(c))
if err != nil {
return nil, nil, nil, err
}
@@ -564,8 +565,9 @@ func GetNewReplicaSet(deployment *extensions.Deployment, c clientset.Interface)
return FindNewReplicaSet(deployment, rsList)
}
// GetNewReplicaSetV15 is a compatibility function that behaves the way
// GetNewReplicaSet() used to in v1.5.x.
// GetNewReplicaSetV15 is a compatibility function that emulates the behavior
// from v1.5.x (list matching objects by selector) except that it leaves out
// objects that are explicitly marked as being controlled by something else.
func GetNewReplicaSetV15(deployment *extensions.Deployment, c clientset.Interface) (*extensions.ReplicaSet, error) {
rsList, err := ListReplicaSetsV15(deployment, rsListFromClient(c))
if err != nil {
@@ -628,26 +630,10 @@ func ListReplicaSets(deployment *extensions.Deployment, getRSList rsListFunc) ([
return owned, nil
}
// ListReplicaSetsV15 is a compatibility function that behaves the way
// ListReplicaSets() used to in v1.5.x.
// ListReplicaSetsV15 is a compatibility function that emulates the behavior
// from v1.5.x (list matching objects by selector) except that it leaves out
// objects that are explicitly marked as being controlled by something else.
func ListReplicaSetsV15(deployment *extensions.Deployment, getRSList rsListFunc) ([]*extensions.ReplicaSet, error) {
namespace := deployment.Namespace
selector, err := metav1.LabelSelectorAsSelector(deployment.Spec.Selector)
if err != nil {
return nil, err
}
options := metav1.ListOptions{LabelSelector: selector.String()}
return getRSList(namespace, options)
}
// ListReplicaSets returns a slice of RSes the given deployment targets.
// Note that this does NOT attempt to reconcile ControllerRef (adopt/orphan),
// because only the controller itself should do that.
// However, it does filter out anything whose ControllerRef doesn't match.
// TODO: Remove the duplicate.
func ListReplicaSetsInternal(deployment *internalextensions.Deployment, getRSList func(string, metav1.ListOptions) ([]*internalextensions.ReplicaSet, error)) ([]*internalextensions.ReplicaSet, error) {
// TODO: Right now we list replica sets by their labels. We should list them by selector, i.e. the replica set's selector
// should be a superset of the deployment's selector, see https://github.com/kubernetes/kubernetes/issues/19830.
namespace := deployment.Namespace
selector, err := metav1.LabelSelectorAsSelector(deployment.Spec.Selector)
if err != nil {
@@ -656,17 +642,49 @@ func ListReplicaSetsInternal(deployment *internalextensions.Deployment, getRSLis
options := metav1.ListOptions{LabelSelector: selector.String()}
all, err := getRSList(namespace, options)
if err != nil {
return all, err
return nil, err
}
// Only include those whose ControllerRef matches the Deployment.
owned := make([]*internalextensions.ReplicaSet, 0, len(all))
// Since this function maintains compatibility with v1.5, the objects we want
// do not necessarily have ControllerRefs pointing to us.
// However, we can at least avoid interfering with other controllers that do
// use ControllerRef.
filtered := make([]*extensions.ReplicaSet, 0, len(all))
for _, rs := range all {
controllerRef := controller.GetControllerOf(rs)
if controllerRef != nil && controllerRef.UID == deployment.UID {
owned = append(owned, rs)
if controllerRef != nil && controllerRef.UID != deployment.UID {
continue
}
filtered = append(filtered, rs)
}
return owned, nil
return filtered, nil
}
// ListReplicaSetsInternalV15 is ListReplicaSetsV15 for internalextensions.
// TODO: Remove the duplicate when call sites are updated to ListReplicaSetsV15.
func ListReplicaSetsInternalV15(deployment *internalextensions.Deployment, getRSList func(string, metav1.ListOptions) ([]*internalextensions.ReplicaSet, error)) ([]*internalextensions.ReplicaSet, error) {
namespace := deployment.Namespace
selector, err := metav1.LabelSelectorAsSelector(deployment.Spec.Selector)
if err != nil {
return nil, err
}
options := metav1.ListOptions{LabelSelector: selector.String()}
all, err := getRSList(namespace, options)
if err != nil {
return nil, err
}
// Since this function maintains compatibility with v1.5, the objects we want
// do not necessarily have ControllerRefs pointing to us.
// However, we can at least avoid interfering with other controllers that do
// use ControllerRef.
filtered := make([]*internalextensions.ReplicaSet, 0, len(all))
for _, rs := range all {
controllerRef := controller.GetControllerOf(rs)
if controllerRef != nil && controllerRef.UID != deployment.UID {
continue
}
filtered = append(filtered, rs)
}
return filtered, nil
}
// ListPods returns a list of pods the given deployment targets.
@@ -703,16 +721,39 @@ func ListPods(deployment *extensions.Deployment, rsList []*extensions.ReplicaSet
return owned, nil
}
// ListPodsV15 is a compatibility function that behaves the way
// ListPods() used to in v1.5.x.
func ListPodsV15(deployment *extensions.Deployment, getPodList podListFunc) (*v1.PodList, error) {
// ListPodsV15 is a compatibility function that emulates the behavior
// from v1.5.x (list matching objects by selector) except that it leaves out
// objects that are explicitly marked as being controlled by something else.
func ListPodsV15(deployment *extensions.Deployment, rsList []*extensions.ReplicaSet, getPodList podListFunc) (*v1.PodList, error) {
namespace := deployment.Namespace
selector, err := metav1.LabelSelectorAsSelector(deployment.Spec.Selector)
if err != nil {
return nil, err
}
options := metav1.ListOptions{LabelSelector: selector.String()}
return getPodList(namespace, options)
podList, err := getPodList(namespace, options)
if err != nil {
return nil, err
}
// Since this function maintains compatibility with v1.5, the objects we want
// do not necessarily have ControllerRefs pointing to one of our ReplicaSets.
// However, we can at least avoid interfering with other controllers that do
// use ControllerRef.
rsMap := make(map[types.UID]bool, len(rsList))
for _, rs := range rsList {
rsMap[rs.UID] = true
}
filtered := make([]v1.Pod, 0, len(podList.Items))
for i := range podList.Items {
pod := &podList.Items[i]
controllerRef := controller.GetControllerOf(pod)
if controllerRef != nil && !rsMap[controllerRef.UID] {
continue
}
filtered = append(filtered, *pod)
}
podList.Items = filtered
return podList, nil
}
// EqualIgnoreHash returns true if two given podTemplateSpec are equal, ignoring the diff in value of Labels[pod-template-hash]