func AddHPAScaleRefEdges(g osgraph.Graph) {
for _, node := range g.NodesByKind(kubegraph.HorizontalPodAutoscalerNodeKind) {
hpaNode := node.(*kubegraph.HorizontalPodAutoscalerNode)
syntheticMeta := kapi.ObjectMeta{
Name: hpaNode.HorizontalPodAutoscaler.Spec.ScaleRef.Name,
Namespace: hpaNode.HorizontalPodAutoscaler.Namespace,
}
var groupVersionResource unversioned.GroupVersionResource
resource := strings.ToLower(hpaNode.HorizontalPodAutoscaler.Spec.ScaleRef.Kind)
if groupVersion, err := unversioned.ParseGroupVersion(hpaNode.HorizontalPodAutoscaler.Spec.ScaleRef.APIVersion); err == nil {
groupVersionResource = groupVersion.WithResource(resource)
} else {
groupVersionResource = unversioned.GroupVersionResource{Resource: resource}
}
groupVersionResource, err := registered.RESTMapper().ResourceFor(groupVersionResource)
if err != nil {
continue
}
var syntheticNode graph.Node
switch groupVersionResource.GroupResource() {
case kapi.Resource("replicationcontrollers"):
syntheticNode = kubegraph.FindOrCreateSyntheticReplicationControllerNode(g, &kapi.ReplicationController{ObjectMeta: syntheticMeta})
case deployapi.Resource("deploymentconfigs"):
syntheticNode = deploygraph.FindOrCreateSyntheticDeploymentConfigNode(g, &deployapi.DeploymentConfig{ObjectMeta: syntheticMeta})
default:
continue
}
g.AddEdge(hpaNode, syntheticNode, ScalingEdgeKind)
}
}
func (m *DefaultRESTMapper) ResourcesFor(resource unversioned.GroupVersionResource) ([]unversioned.GroupVersionResource, error) {
hasResource := len(resource.Resource) > 0
hasGroup := len(resource.Group) > 0
hasVersion := len(resource.Version) > 0
if !hasResource {
return nil, fmt.Errorf("a resource must be present, got: %v", resource)
}
ret := []unversioned.GroupVersionResource{}
switch {
// fully qualified. Find the exact match
case hasGroup && hasVersion:
for plural, singular := range m.pluralToSingular {
if singular == resource {
ret = append(ret, plural)
break
}
if plural == resource {
ret = append(ret, plural)
break
}
}
case hasGroup:
requestedGroupResource := resource.GroupResource()
for currResource := range m.pluralToSingular {
if currResource.GroupResource() == requestedGroupResource {
ret = append(ret, currResource)
}
}
case hasVersion:
for currResource := range m.pluralToSingular {
if currResource.Version == resource.Version && currResource.Resource == resource.Resource {
ret = append(ret, currResource)
}
}
default:
for currResource := range m.pluralToSingular {
if currResource.Resource == resource.Resource {
ret = append(ret, currResource)
}
}
}
if len(ret) == 0 {
return nil, fmt.Errorf("no resource %v has been defined; known resources: %v", resource, m.pluralToSingular)
}
sort.Sort(resourceByPreferredGroupVersion{ret, m.defaultGroupVersions})
return ret, nil
}
// estimateGrracefulTermination will estimate the graceful termination required for the specific entity in the namespace
func estimateGracefulTermination(kubeClient clientset.Interface, groupVersionResource unversioned.GroupVersionResource, ns string, namespaceDeletedAt unversioned.Time) (int64, error) {
groupResource := groupVersionResource.GroupResource()
glog.V(5).Infof("namespace controller - estimateGracefulTermination - group %s, resource: %s", groupResource.Group, groupResource.Resource)
estimate := int64(0)
var err error
switch groupResource {
case unversioned.GroupResource{Group: "", Resource: "pods"}:
estimate, err = estimateGracefulTerminationForPods(kubeClient, ns)
}
if err != nil {
return estimate, err
}
// determine if the estimate is greater than the deletion timestamp
duration := time.Since(namespaceDeletedAt.Time)
allowedEstimate := time.Duration(estimate) * time.Second
if duration >= allowedEstimate {
estimate = int64(0)
}
return estimate, nil
}
func (m *DefaultRESTMapper) ResourcesFor(resource unversioned.GroupVersionResource) ([]unversioned.GroupVersionResource, error) {
resource.Resource = strings.ToLower(resource.Resource)
if resource.Version == runtime.APIVersionInternal {
resource.Version = ""
}
hasResource := len(resource.Resource) > 0
hasGroup := len(resource.Group) > 0
hasVersion := len(resource.Version) > 0
if !hasResource {
return nil, fmt.Errorf("a resource must be present, got: %v", resource)
}
ret := []unversioned.GroupVersionResource{}
switch {
// fully qualified. Find the exact match
case hasGroup && hasVersion:
for plural, singular := range m.pluralToSingular {
if singular == resource {
ret = append(ret, plural)
break
}
if plural == resource {
ret = append(ret, plural)
break
}
}
case hasGroup:
requestedGroupResource := resource.GroupResource()
for plural, singular := range m.pluralToSingular {
if singular.GroupResource() == requestedGroupResource {
ret = append(ret, plural)
}
if plural.GroupResource() == requestedGroupResource {
ret = append(ret, plural)
}
}
case hasVersion:
for plural, singular := range m.pluralToSingular {
if singular.Version == resource.Version && singular.Resource == resource.Resource {
ret = append(ret, plural)
}
if plural.Version == resource.Version && plural.Resource == resource.Resource {
ret = append(ret, plural)
}
}
default:
for plural, singular := range m.pluralToSingular {
if singular.Resource == resource.Resource {
ret = append(ret, plural)
}
if plural.Resource == resource.Resource {
ret = append(ret, plural)
}
}
}
if len(ret) == 0 {
return nil, &NoResourceMatchError{PartialResource: resource}
}
sort.Sort(resourceByPreferredGroupVersion{ret, m.defaultGroupVersions})
return ret, nil
}
// patchResource divides PatchResource for easier unit testing
func patchResource(
ctx api.Context,
admit updateAdmissionFunc,
timeout time.Duration,
versionedObj runtime.Object,
patcher rest.Patcher,
name string,
patchType api.PatchType,
patchJS []byte,
namer ScopeNamer,
copier runtime.ObjectCopier,
resource unversioned.GroupVersionResource,
codec runtime.Codec,
) (runtime.Object, error) {
namespace := api.NamespaceValue(ctx)
var (
originalObjJS []byte
originalPatchedObjJS []byte
lastConflictErr error
)
// applyPatch is called every time GuaranteedUpdate asks for the updated object,
// and is given the currently persisted object as input.
applyPatch := func(_ api.Context, _, currentObject runtime.Object) (runtime.Object, error) {
// Make sure we actually have a persisted currentObject
if hasUID, err := hasUID(currentObject); err != nil {
return nil, err
} else if !hasUID {
return nil, errors.NewNotFound(resource.GroupResource(), name)
}
switch {
case len(originalObjJS) == 0 || len(originalPatchedObjJS) == 0:
// first time through,
// 1. apply the patch
// 2. save the originalJS and patchedJS to detect whether there were conflicting changes on retries
if js, err := runtime.Encode(codec, currentObject); err != nil {
return nil, err
} else {
originalObjJS = js
}
if js, err := getPatchedJS(patchType, originalObjJS, patchJS, versionedObj); err != nil {
return nil, err
} else {
originalPatchedObjJS = js
}
objToUpdate := patcher.New()
if err := runtime.DecodeInto(codec, originalPatchedObjJS, objToUpdate); err != nil {
return nil, err
}
if err := checkName(objToUpdate, name, namespace, namer); err != nil {
return nil, err
}
return objToUpdate, nil
default:
// on a conflict,
// 1. build a strategic merge patch from originalJS and the patchedJS. Different patch types can
// be specified, but a strategic merge patch should be expressive enough handle them. Build the
// patch with this type to handle those cases.
// 2. build a strategic merge patch from originalJS and the currentJS
// 3. ensure no conflicts between the two patches
// 4. apply the #1 patch to the currentJS object
currentObjectJS, err := runtime.Encode(codec, currentObject)
if err != nil {
return nil, err
}
currentPatch, err := strategicpatch.CreateStrategicMergePatch(originalObjJS, currentObjectJS, versionedObj, strategicpatch.SMPatchVersionLatest)
if err != nil {
return nil, err
}
originalPatch, err := strategicpatch.CreateStrategicMergePatch(originalObjJS, originalPatchedObjJS, versionedObj, strategicpatch.SMPatchVersionLatest)
if err != nil {
return nil, err
}
diff1 := make(map[string]interface{})
if err := json.Unmarshal(originalPatch, &diff1); err != nil {
return nil, err
}
diff2 := make(map[string]interface{})
if err := json.Unmarshal(currentPatch, &diff2); err != nil {
return nil, err
}
hasConflicts, err := strategicpatch.HasConflicts(diff1, diff2)
if err != nil {
return nil, err
}
if hasConflicts {
glog.V(4).Infof("patchResource failed for resource %s, because there is a meaningful conflict.\n diff1=%v\n, diff2=%v\n", name, diff1, diff2)
// Return the last conflict error we got if we have one
if lastConflictErr != nil {
return nil, lastConflictErr
}
// Otherwise manufacture one of our own
return nil, errors.NewConflict(resource.GroupResource(), name, nil)
}
newlyPatchedObjJS, err := getPatchedJS(api.StrategicMergePatchType, currentObjectJS, originalPatch, versionedObj)
if err != nil {
return nil, err
}
objToUpdate := patcher.New()
if err := runtime.DecodeInto(codec, newlyPatchedObjJS, objToUpdate); err != nil {
return nil, err
}
return objToUpdate, nil
}
}
// applyAdmission is called every time GuaranteedUpdate asks for the updated object,
// and is given the currently persisted object and the patched object as input.
applyAdmission := func(ctx api.Context, patchedObject runtime.Object, currentObject runtime.Object) (runtime.Object, error) {
return patchedObject, admit(patchedObject, currentObject)
}
updatedObjectInfo := rest.DefaultUpdatedObjectInfo(nil, copier, applyPatch, applyAdmission)
return finishRequest(timeout, func() (runtime.Object, error) {
updateObject, _, updateErr := patcher.Update(ctx, name, updatedObjectInfo)
for i := 0; i < MaxPatchConflicts && (errors.IsConflict(updateErr)); i++ {
lastConflictErr = updateErr
updateObject, _, updateErr = patcher.Update(ctx, name, updatedObjectInfo)
}
return updateObject, updateErr
})
}