func (t *tcShaper) nextClassID() (int, error) {
data, err := t.e.Command("tc", "class", "show", "dev", t.iface).CombinedOutput()
if err != nil {
return -1, err
}
scanner := bufio.NewScanner(bytes.NewBuffer(data))
classes := sets.String{}
for scanner.Scan() {
line := strings.TrimSpace(scanner.Text())
// skip empty lines
if len(line) == 0 {
continue
}
parts := strings.Split(line, " ")
// expected tc line:
// class htb 1:1 root prio 0 rate 1000Kbit ceil 1000Kbit burst 1600b cburst 1600b
if len(parts) != 14 {
return -1, fmt.Errorf("unexpected output from tc: %s (%v)", scanner.Text(), parts)
}
classes.Insert(parts[2])
}
// Make sure it doesn't go forever
for nextClass := 1; nextClass < 10000; nextClass++ {
if !classes.Has(fmt.Sprintf("1:%d", nextClass)) {
return nextClass, nil
}
}
// This should really never happen
return -1, fmt.Errorf("exhausted class space, please try again")
}
// Test public interface
func doTestIndex(t *testing.T, indexer Indexer) {
mkObj := func(id string, val string) testStoreObject {
return testStoreObject{id: id, val: val}
}
// Test Index
expected := map[string]sets.String{}
expected["b"] = sets.NewString("a", "c")
expected["f"] = sets.NewString("e")
expected["h"] = sets.NewString("g")
indexer.Add(mkObj("a", "b"))
indexer.Add(mkObj("c", "b"))
indexer.Add(mkObj("e", "f"))
indexer.Add(mkObj("g", "h"))
{
for k, v := range expected {
found := sets.String{}
indexResults, err := indexer.Index("by_val", mkObj("", k))
if err != nil {
t.Errorf("Unexpected error %v", err)
}
for _, item := range indexResults {
found.Insert(item.(testStoreObject).id)
}
items := v.List()
if !found.HasAll(items...) {
t.Errorf("missing items, index %s, expected %v but found %v", k, items, found.List())
}
}
}
}
// Index returns a list of items that match on the index function
// Index is thread-safe so long as you treat all items as immutable
func (c *threadSafeMap) Index(indexName string, obj interface{}) ([]interface{}, error) {
c.lock.RLock()
defer c.lock.RUnlock()
indexFunc := c.indexers[indexName]
if indexFunc == nil {
return nil, fmt.Errorf("Index with name %s does not exist", indexName)
}
indexKeys, err := indexFunc(obj)
if err != nil {
return nil, err
}
index := c.indices[indexName]
// need to de-dupe the return list. Since multiple keys are allowed, this can happen.
returnKeySet := sets.String{}
for _, indexKey := range indexKeys {
set := index[indexKey]
for _, key := range set.UnsortedList() {
returnKeySet.Insert(key)
}
}
list := make([]interface{}, 0, returnKeySet.Len())
for absoluteKey := range returnKeySet {
list = append(list, c.items[absoluteKey])
}
return list, nil
}
func (r *Requirement) Values() sets.String {
ret := sets.String{}
for i := range r.strValues {
ret.Insert(r.strValues[i])
}
return ret
}
// NegotiateVersion queries the server's supported api versions to find
// a version that both client and server support.
// - If no version is provided, try registered client versions in order of
// preference.
// - If version is provided and the server does not support it,
// return an error.
func NegotiateVersion(client DiscoveryInterface, requiredGV *schema.GroupVersion, clientRegisteredGVs []schema.GroupVersion) (*schema.GroupVersion, error) {
clientVersions := sets.String{}
for _, gv := range clientRegisteredGVs {
clientVersions.Insert(gv.String())
}
groups, err := client.ServerGroups()
if err != nil {
// This is almost always a connection error, and higher level code should treat this as a generic error,
// not a negotiation specific error.
return nil, err
}
versions := metav1.ExtractGroupVersions(groups)
serverVersions := sets.String{}
for _, v := range versions {
serverVersions.Insert(v)
}
// If version explicitly requested verify that both client and server support it.
// If server does not support warn, but try to negotiate a lower version.
if requiredGV != nil {
if !clientVersions.Has(requiredGV.String()) {
return nil, fmt.Errorf("client does not support API version %q; client supported API versions: %v", requiredGV, clientVersions)
}
// If the server supports no versions, then we should just use the preferredGV
// This can happen because discovery fails due to 403 Forbidden errors
if len(serverVersions) == 0 {
return requiredGV, nil
}
if serverVersions.Has(requiredGV.String()) {
return requiredGV, nil
}
// If we are using an explicit config version the server does not support, fail.
return nil, fmt.Errorf("server does not support API version %q", requiredGV)
}
for _, clientGV := range clientRegisteredGVs {
if serverVersions.Has(clientGV.String()) {
// Version was not explicitly requested in command config (--api-version).
// Ok to fall back to a supported version with a warning.
// TODO: caesarxuchao: enable the warning message when we have
// proper fix. Please refer to issue #14895.
// if len(version) != 0 {
// glog.Warningf("Server does not support API version '%s'. Falling back to '%s'.", version, clientVersion)
// }
t := clientGV
return &t, nil
}
}
// if we have no server versions and we have no required version, choose the first clientRegisteredVersion
if len(serverVersions) == 0 && len(clientRegisteredGVs) > 0 {
return &clientRegisteredGVs[0], nil
}
return nil, fmt.Errorf("failed to negotiate an api version; server supports: %v, client supports: %v",
serverVersions, clientVersions)
}
// GetNamespacesFromPodAffinityTerm returns a set of names
// according to the namespaces indicated in podAffinityTerm.
// 1. If the namespaces is nil considers the given pod's namespace
// 2. If the namespaces is empty list then considers all the namespaces
func GetNamespacesFromPodAffinityTerm(pod *v1.Pod, podAffinityTerm *v1.PodAffinityTerm) sets.String {
names := sets.String{}
if podAffinityTerm.Namespaces == nil {
names.Insert(pod.Namespace)
} else if len(podAffinityTerm.Namespaces) != 0 {
names.Insert(podAffinityTerm.Namespaces...)
}
return names
}
func ExampleNewInformer() {
// source simulates an apiserver object endpoint.
source := fcache.NewFakeControllerSource()
// Let's do threadsafe output to get predictable test results.
deletionCounter := make(chan string, 1000)
// Make a controller that immediately deletes anything added to it, and
// logs anything deleted.
_, controller := NewInformer(
source,
&v1.Pod{},
time.Millisecond*100,
ResourceEventHandlerFuncs{
AddFunc: func(obj interface{}) {
source.Delete(obj.(runtime.Object))
},
DeleteFunc: func(obj interface{}) {
key, err := DeletionHandlingMetaNamespaceKeyFunc(obj)
if err != nil {
key = "oops something went wrong with the key"
}
// Report this deletion.
deletionCounter <- key
},
},
)
// Run the controller and run it until we close stop.
stop := make(chan struct{})
defer close(stop)
go controller.Run(stop)
// Let's add a few objects to the source.
testIDs := []string{"a-hello", "b-controller", "c-framework"}
for _, name := range testIDs {
// Note that these pods are not valid-- the fake source doesn't
// call validation or anything.
source.Add(&v1.Pod{ObjectMeta: metav1.ObjectMeta{Name: name}})
}
// Let's wait for the controller to process the things we just added.
outputSet := sets.String{}
for i := 0; i < len(testIDs); i++ {
outputSet.Insert(<-deletionCounter)
}
for _, key := range outputSet.List() {
fmt.Println(key)
}
// Output:
// a-hello
// b-controller
// c-framework
}
// enforcePodContainerConstraints checks for required resources that are not set on this container and
// adds them to missingSet.
func enforcePodContainerConstraints(container *api.Container, requiredSet, missingSet sets.String) {
requests := container.Resources.Requests
limits := container.Resources.Limits
containerUsage := podUsageHelper(requests, limits)
containerSet := quota.ToSet(quota.ResourceNames(containerUsage))
if !containerSet.Equal(requiredSet) {
difference := requiredSet.Difference(containerSet)
missingSet.Insert(difference.List()...)
}
}
func NewRequestInfoResolver(c *Config) *apirequest.RequestInfoFactory {
apiPrefixes := sets.NewString(strings.Trim(APIGroupPrefix, "/")) // all possible API prefixes
legacyAPIPrefixes := sets.String{} // APIPrefixes that won't have groups (legacy)
for legacyAPIPrefix := range c.LegacyAPIGroupPrefixes {
apiPrefixes.Insert(strings.Trim(legacyAPIPrefix, "/"))
legacyAPIPrefixes.Insert(strings.Trim(legacyAPIPrefix, "/"))
}
return &apirequest.RequestInfoFactory{
APIPrefixes: apiPrefixes,
GrouplessAPIPrefixes: legacyAPIPrefixes,
}
}
// RESTMapper returns a union RESTMapper of all known types with priorities chosen in the following order:
// 1. if KUBE_API_VERSIONS is specified, then KUBE_API_VERSIONS in order, OR
// 1. legacy kube group preferred version, extensions preferred version, metrics perferred version, legacy
// kube any version, extensions any version, metrics any version, all other groups alphabetical preferred version,
// all other groups alphabetical.
func (m *APIRegistrationManager) RESTMapper(versionPatterns ...schema.GroupVersion) meta.RESTMapper {
unionMapper := meta.MultiRESTMapper{}
unionedGroups := sets.NewString()
for enabledVersion := range m.enabledVersions {
if !unionedGroups.Has(enabledVersion.Group) {
unionedGroups.Insert(enabledVersion.Group)
groupMeta := m.groupMetaMap[enabledVersion.Group]
unionMapper = append(unionMapper, groupMeta.RESTMapper)
}
}
if len(versionPatterns) != 0 {
resourcePriority := []schema.GroupVersionResource{}
kindPriority := []schema.GroupVersionKind{}
for _, versionPriority := range versionPatterns {
resourcePriority = append(resourcePriority, versionPriority.WithResource(meta.AnyResource))
kindPriority = append(kindPriority, versionPriority.WithKind(meta.AnyKind))
}
return meta.PriorityRESTMapper{Delegate: unionMapper, ResourcePriority: resourcePriority, KindPriority: kindPriority}
}
if len(m.envRequestedVersions) != 0 {
resourcePriority := []schema.GroupVersionResource{}
kindPriority := []schema.GroupVersionKind{}
for _, versionPriority := range m.envRequestedVersions {
resourcePriority = append(resourcePriority, versionPriority.WithResource(meta.AnyResource))
kindPriority = append(kindPriority, versionPriority.WithKind(meta.AnyKind))
}
return meta.PriorityRESTMapper{Delegate: unionMapper, ResourcePriority: resourcePriority, KindPriority: kindPriority}
}
prioritizedGroups := []string{"", "extensions", "metrics"}
resourcePriority, kindPriority := m.prioritiesForGroups(prioritizedGroups...)
prioritizedGroupsSet := sets.NewString(prioritizedGroups...)
remainingGroups := sets.String{}
for enabledVersion := range m.enabledVersions {
if !prioritizedGroupsSet.Has(enabledVersion.Group) {
remainingGroups.Insert(enabledVersion.Group)
}
}
remainingResourcePriority, remainingKindPriority := m.prioritiesForGroups(remainingGroups.List()...)
resourcePriority = append(resourcePriority, remainingResourcePriority...)
kindPriority = append(kindPriority, remainingKindPriority...)
return meta.PriorityRESTMapper{Delegate: unionMapper, ResourcePriority: resourcePriority, KindPriority: kindPriority}
}
//getWebserverEndpoints returns the webserver endpoints as a set of String, each in the format like "http://{ip}:{port}"
func getWebserverEndpoints(client clientset.Interface) sets.String {
endpoints, err := client.Core().Endpoints(*namespace).Get(*service, v1.GetOptions{})
eps := sets.String{}
if err != nil {
state.Logf("Unable to read the endpoints for %v/%v: %v.", *namespace, *service, err)
return eps
}
for _, ss := range endpoints.Subsets {
for _, a := range ss.Addresses {
for _, p := range ss.Ports {
eps.Insert(fmt.Sprintf("http://%s:%d", a.IP, p.Port))
}
}
}
return eps
}
func (e *EndpointController) getPodServiceMemberships(pod *v1.Pod) (sets.String, error) {
set := sets.String{}
services, err := e.serviceStore.GetPodServices(pod)
if err != nil {
// don't log this error because this function makes pointless
// errors when no services match.
return set, nil
}
for i := range services {
key, err := keyFunc(services[i])
if err != nil {
return nil, err
}
set.Insert(key)
}
return set, nil
}
func (t *ThirdPartyController) syncResourceList(list runtime.Object) error {
existing := sets.String{}
switch list := list.(type) {
case *extensions.ThirdPartyResourceList:
// Loop across all schema objects for third party resources
for ix := range list.Items {
item := &list.Items[ix]
// extract the api group and resource kind from the schema
_, group, err := thirdpartyresourcedata.ExtractApiGroupAndKind(item)
if err != nil {
return err
}
// place it in the set of resources that we expect, so that we don't delete it in the delete pass
existing.Insert(MakeThirdPartyPath(group))
// ensure a RESTful resource for this schema exists on the master
if err := t.SyncOneResource(item); err != nil {
return err
}
}
default:
return fmt.Errorf("expected a *ThirdPartyResourceList, got %#v", list)
}
// deletion phase, get all installed RESTful resources
installed := t.master.ListThirdPartyResources()
for _, installedAPI := range installed {
found := false
// search across the expected restful resources to see if this resource belongs to one of the expected ones
for _, apiPath := range existing.List() {
if installedAPI == apiPath || strings.HasPrefix(installedAPI, apiPath+"/") {
found = true
break
}
}
// not expected, delete the resource
if !found {
if err := t.master.RemoveThirdPartyResource(installedAPI); err != nil {
return err
}
}
}
return nil
}
// cleanupBandwidthLimits updates the status of bandwidth-limited containers
// and ensures that only the appropriate CIDRs are active on the node.
func (kl *Kubelet) cleanupBandwidthLimits(allPods []*v1.Pod) error {
if kl.shaper == nil {
return nil
}
currentCIDRs, err := kl.shaper.GetCIDRs()
if err != nil {
return err
}
possibleCIDRs := sets.String{}
for ix := range allPods {
pod := allPods[ix]
ingress, egress, err := bandwidth.ExtractPodBandwidthResources(pod.Annotations)
if err != nil {
return err
}
if ingress == nil && egress == nil {
glog.V(8).Infof("Not a bandwidth limited container...")
continue
}
status, found := kl.statusManager.GetPodStatus(pod.UID)
if !found {
// TODO(random-liu): Cleanup status get functions. (issue #20477)
s, err := kl.containerRuntime.GetPodStatus(pod.UID, pod.Name, pod.Namespace)
if err != nil {
return err
}
status = kl.generateAPIPodStatus(pod, s)
}
if status.Phase == v1.PodRunning {
possibleCIDRs.Insert(fmt.Sprintf("%s/32", status.PodIP))
}
}
for _, cidr := range currentCIDRs {
if !possibleCIDRs.Has(cidr) {
glog.V(2).Infof("Removing CIDR: %s (%v)", cidr, possibleCIDRs)
if err := kl.shaper.Reset(cidr); err != nil {
return err
}
}
}
return nil
}
func AccumulateUniqueHostPorts(containers []v1.Container, accumulator *sets.String, fldPath *field.Path) field.ErrorList {
allErrs := field.ErrorList{}
for ci, ctr := range containers {
idxPath := fldPath.Index(ci)
portsPath := idxPath.Child("ports")
for pi := range ctr.Ports {
idxPath := portsPath.Index(pi)
port := ctr.Ports[pi].HostPort
if port == 0 {
continue
}
str := fmt.Sprintf("%d/%s", port, ctr.Ports[pi].Protocol)
if accumulator.Has(str) {
allErrs = append(allErrs, field.Duplicate(idxPath.Child("hostPort"), str))
} else {
accumulator.Insert(str)
}
}
}
return allErrs
}
func filterInvalidPods(pods []*v1.Pod, source string, recorder record.EventRecorder) (filtered []*v1.Pod) {
names := sets.String{}
for i, pod := range pods {
var errlist field.ErrorList
// TODO: remove the conversion when validation is performed on versioned objects.
internalPod := &api.Pod{}
if err := v1.Convert_v1_Pod_To_api_Pod(pod, internalPod, nil); err != nil {
name := kubecontainer.GetPodFullName(pod)
glog.Warningf("Pod[%d] (%s) from %s failed to convert to v1, ignoring: %v", i+1, name, source, err)
recorder.Eventf(pod, v1.EventTypeWarning, "FailedConversion", "Error converting pod %s from %s, ignoring: %v", name, source, err)
continue
}
if errs := validation.ValidatePod(internalPod); len(errs) != 0 {
errlist = append(errlist, errs...)
// If validation fails, don't trust it any further -
// even Name could be bad.
} else {
name := kubecontainer.GetPodFullName(pod)
if names.Has(name) {
// TODO: when validation becomes versioned, this gets a bit
// more complicated.
errlist = append(errlist, field.Duplicate(field.NewPath("metadata", "name"), pod.Name))
} else {
names.Insert(name)
}
}
if len(errlist) > 0 {
name := bestPodIdentString(pod)
err := errlist.ToAggregate()
glog.Warningf("Pod[%d] (%s) from %s failed validation, ignoring: %v", i+1, name, source, err)
recorder.Eventf(pod, v1.EventTypeWarning, events.FailedValidation, "Error validating pod %s from %s, ignoring: %v", name, source, err)
continue
}
filtered = append(filtered, pod)
}
return
}
func ValidateThirdPartyResource(obj *extensions.ThirdPartyResource) field.ErrorList {
allErrs := field.ErrorList{}
allErrs = append(allErrs, apivalidation.ValidateObjectMeta(&obj.ObjectMeta, false, ValidateThirdPartyResourceName, field.NewPath("metadata"))...)
versions := sets.String{}
if len(obj.Versions) == 0 {
allErrs = append(allErrs, field.Required(field.NewPath("versions"), "must specify at least one version"))
}
for ix := range obj.Versions {
version := &obj.Versions[ix]
if len(version.Name) == 0 {
allErrs = append(allErrs, field.Invalid(field.NewPath("versions").Index(ix).Child("name"), version, "must not be empty"))
} else {
for _, msg := range validation.IsDNS1123Label(version.Name) {
allErrs = append(allErrs, field.Invalid(field.NewPath("versions").Index(ix).Child("name"), version, msg))
}
}
if versions.Has(version.Name) {
allErrs = append(allErrs, field.Duplicate(field.NewPath("versions").Index(ix).Child("name"), version))
}
versions.Insert(version.Name)
}
return allErrs
}
// Object returns a single object representing the output of a single visit to all
// found resources. If the Builder was a singular context (expected to return a
// single resource by user input) and only a single resource was found, the resource
// will be returned as is. Otherwise, the returned resources will be part of an
// api.List. The ResourceVersion of the api.List will be set only if it is identical
// across all infos returned.
func (r *Result) Object() (runtime.Object, error) {
infos, err := r.Infos()
if err != nil {
return nil, err
}
versions := sets.String{}
objects := []runtime.Object{}
for _, info := range infos {
if info.Object != nil {
objects = append(objects, info.Object)
versions.Insert(info.ResourceVersion)
}
}
if len(objects) == 1 {
if r.singleItemImplied {
return objects[0], nil
}
// if the item is a list already, don't create another list
if meta.IsListType(objects[0]) {
return objects[0], nil
}
}
version := ""
if len(versions) == 1 {
version = versions.List()[0]
}
return &api.List{
ListMeta: metav1.ListMeta{
ResourceVersion: version,
},
Items: objects,
}, err
}
// nodes we observe initially.
nodeLabels = make(map[string]string)
nodeLabels["kubelet_cleanup"] = "true"
nodes := framework.GetReadySchedulableNodesOrDie(c)
numNodes = len(nodes.Items)
nodeNames = sets.NewString()
// If there are a lot of nodes, we don't want to use all of them
// (if there are 1000 nodes in the cluster, starting 10 pods/node
// will take ~10 minutes today). And there is also deletion phase.
// Instead, we choose at most 10 nodes.
if numNodes > maxNodesToCheck {
numNodes = maxNodesToCheck
}
for i := 0; i < numNodes; i++ {
nodeNames.Insert(nodes.Items[i].Name)
}
updateNodeLabels(c, nodeNames, nodeLabels, nil)
// Start resourceMonitor only in small clusters.
if len(nodes.Items) <= maxNodesToCheck {
resourceMonitor = framework.NewResourceMonitor(f.ClientSet, framework.TargetContainers(), containerStatsPollingInterval)
resourceMonitor.Start()
}
})
AfterEach(func() {
if resourceMonitor != nil {
resourceMonitor.Stop()
}
// If we added labels to nodes in this test, remove them now.
// Test public interface
func doTestStore(t *testing.T, store Store) {
mkObj := func(id string, val string) testStoreObject {
return testStoreObject{id: id, val: val}
}
store.Add(mkObj("foo", "bar"))
if item, ok, _ := store.Get(mkObj("foo", "")); !ok {
t.Errorf("didn't find inserted item")
} else {
if e, a := "bar", item.(testStoreObject).val; e != a {
t.Errorf("expected %v, got %v", e, a)
}
}
store.Update(mkObj("foo", "baz"))
if item, ok, _ := store.Get(mkObj("foo", "")); !ok {
t.Errorf("didn't find inserted item")
} else {
if e, a := "baz", item.(testStoreObject).val; e != a {
t.Errorf("expected %v, got %v", e, a)
}
}
store.Delete(mkObj("foo", ""))
if _, ok, _ := store.Get(mkObj("foo", "")); ok {
t.Errorf("found deleted item??")
}
// Test List.
store.Add(mkObj("a", "b"))
store.Add(mkObj("c", "d"))
store.Add(mkObj("e", "e"))
{
found := sets.String{}
for _, item := range store.List() {
found.Insert(item.(testStoreObject).val)
}
if !found.HasAll("b", "d", "e") {
t.Errorf("missing items, found: %v", found)
}
if len(found) != 3 {
t.Errorf("extra items")
}
}
// Test Replace.
store.Replace([]interface{}{
mkObj("foo", "foo"),
mkObj("bar", "bar"),
}, "0")
{
found := sets.String{}
for _, item := range store.List() {
found.Insert(item.(testStoreObject).val)
}
if !found.HasAll("foo", "bar") {
t.Errorf("missing items")
}
if len(found) != 2 {
t.Errorf("extra items")
}
}
}
func TestSyncAPIs(t *testing.T) {
resourcesNamed := func(names ...string) []expapi.ThirdPartyResource {
result := []expapi.ThirdPartyResource{}
for _, name := range names {
result = append(result, expapi.ThirdPartyResource{ObjectMeta: metav1.ObjectMeta{Name: name}})
}
return result
}
tests := []struct {
list *expapi.ThirdPartyResourceList
apis []string
expectedInstalled []string
expectedRemoved []string
name string
}{
{
list: &expapi.ThirdPartyResourceList{
Items: resourcesNamed("foo.example.com"),
},
expectedInstalled: []string{"foo.example.com"},
name: "simple add",
},
{
list: &expapi.ThirdPartyResourceList{
Items: resourcesNamed("foo.example.com"),
},
apis: []string{
"/apis/example.com",
"/apis/example.com/v1",
},
name: "does nothing",
},
{
list: &expapi.ThirdPartyResourceList{
Items: resourcesNamed("foo.example.com"),
},
apis: []string{
"/apis/example.com",
"/apis/example.com/v1",
"/apis/example.co",
"/apis/example.co/v1",
},
name: "deletes substring API",
expectedRemoved: []string{
"/apis/example.co",
"/apis/example.co/v1",
},
},
{
list: &expapi.ThirdPartyResourceList{
Items: resourcesNamed("foo.example.com", "foo.company.com"),
},
apis: []string{
"/apis/company.com",
"/apis/company.com/v1",
},
expectedInstalled: []string{"foo.example.com"},
name: "adds with existing",
},
{
list: &expapi.ThirdPartyResourceList{
Items: resourcesNamed("foo.example.com"),
},
apis: []string{
"/apis/company.com",
"/apis/company.com/v1",
},
expectedInstalled: []string{"foo.example.com"},
expectedRemoved: []string{"/apis/company.com", "/apis/company.com/v1"},
name: "removes with existing",
},
}
for _, test := range tests {
fake := FakeAPIInterface{
apis: test.apis,
t: t,
}
cntrl := ThirdPartyController{master: &fake}
if err := cntrl.syncResourceList(test.list); err != nil {
t.Errorf("[%s] unexpected error: %v", test.name, err)
}
if len(test.expectedInstalled) != len(fake.installed) {
t.Errorf("[%s] unexpected installed APIs: %d, expected %d (%#v)", test.name, len(fake.installed), len(test.expectedInstalled), fake.installed[0])
continue
} else {
names := sets.String{}
for ix := range fake.installed {
names.Insert(fake.installed[ix].Name)
}
for _, name := range test.expectedInstalled {
if !names.Has(name) {
t.Errorf("[%s] missing installed API: %s", test.name, name)
}
}
}
if len(test.expectedRemoved) != len(fake.removed) {
t.Errorf("[%s] unexpected installed APIs: %d, expected %d", test.name, len(fake.removed), len(test.expectedRemoved))
continue
} else {
names := sets.String{}
names.Insert(fake.removed...)
for _, name := range test.expectedRemoved {
if !names.Has(name) {
t.Errorf("[%s] missing removed API: %s (%s)", test.name, name, names)
}
}
}
}
}
func TestWatchCacheBasic(t *testing.T) {
store := newTestWatchCache(2)
// Test Add/Update/Delete.
pod1 := makeTestPod("pod", 1)
if err := store.Add(pod1); err != nil {
t.Errorf("unexpected error: %v", err)
}
if item, ok, _ := store.Get(pod1); !ok {
t.Errorf("didn't find pod")
} else {
if !api.Semantic.DeepEqual(&storeElement{Key: "prefix/ns/pod", Object: pod1}, item) {
t.Errorf("expected %v, got %v", pod1, item)
}
}
pod2 := makeTestPod("pod", 2)
if err := store.Update(pod2); err != nil {
t.Errorf("unexpected error: %v", err)
}
if item, ok, _ := store.Get(pod2); !ok {
t.Errorf("didn't find pod")
} else {
if !api.Semantic.DeepEqual(&storeElement{Key: "prefix/ns/pod", Object: pod2}, item) {
t.Errorf("expected %v, got %v", pod1, item)
}
}
pod3 := makeTestPod("pod", 3)
if err := store.Delete(pod3); err != nil {
t.Errorf("unexpected error: %v", err)
}
if _, ok, _ := store.Get(pod3); ok {
t.Errorf("found pod")
}
// Test List.
store.Add(makeTestPod("pod1", 4))
store.Add(makeTestPod("pod2", 5))
store.Add(makeTestPod("pod3", 6))
{
podNames := sets.String{}
for _, item := range store.List() {
podNames.Insert(item.(*storeElement).Object.(*api.Pod).ObjectMeta.Name)
}
if !podNames.HasAll("pod1", "pod2", "pod3") {
t.Errorf("missing pods, found %v", podNames)
}
if len(podNames) != 3 {
t.Errorf("found missing/extra items")
}
}
// Test Replace.
store.Replace([]interface{}{
makeTestPod("pod4", 7),
makeTestPod("pod5", 8),
}, "8")
{
podNames := sets.String{}
for _, item := range store.List() {
podNames.Insert(item.(*storeElement).Object.(*api.Pod).ObjectMeta.Name)
}
if !podNames.HasAll("pod4", "pod5") {
t.Errorf("missing pods, found %v", podNames)
}
if len(podNames) != 2 {
t.Errorf("found missing/extra items")
}
}
}
func TestHammerController(t *testing.T) {
// This test executes a bunch of requests through the fake source and
// controller framework to make sure there's no locking/threading
// errors. If an error happens, it should hang forever or trigger the
// race detector.
// source simulates an apiserver object endpoint.
source := fcache.NewFakeControllerSource()
// Let's do threadsafe output to get predictable test results.
outputSetLock := sync.Mutex{}
// map of key to operations done on the key
outputSet := map[string][]string{}
recordFunc := func(eventType string, obj interface{}) {
key, err := DeletionHandlingMetaNamespaceKeyFunc(obj)
if err != nil {
t.Errorf("something wrong with key: %v", err)
key = "oops something went wrong with the key"
}
// Record some output when items are deleted.
outputSetLock.Lock()
defer outputSetLock.Unlock()
outputSet[key] = append(outputSet[key], eventType)
}
// Make a controller which just logs all the changes it gets.
_, controller := NewInformer(
source,
&v1.Pod{},
time.Millisecond*100,
ResourceEventHandlerFuncs{
AddFunc: func(obj interface{}) { recordFunc("add", obj) },
UpdateFunc: func(oldObj, newObj interface{}) { recordFunc("update", newObj) },
DeleteFunc: func(obj interface{}) { recordFunc("delete", obj) },
},
)
if controller.HasSynced() {
t.Errorf("Expected HasSynced() to return false before we started the controller")
}
// Run the controller and run it until we close stop.
stop := make(chan struct{})
go controller.Run(stop)
// Let's wait for the controller to do its initial sync
wait.Poll(100*time.Millisecond, wait.ForeverTestTimeout, func() (bool, error) {
return controller.HasSynced(), nil
})
if !controller.HasSynced() {
t.Errorf("Expected HasSynced() to return true after the initial sync")
}
wg := sync.WaitGroup{}
const threads = 3
wg.Add(threads)
for i := 0; i < threads; i++ {
go func() {
defer wg.Done()
// Let's add a few objects to the source.
currentNames := sets.String{}
rs := rand.NewSource(rand.Int63())
f := fuzz.New().NilChance(.5).NumElements(0, 2).RandSource(rs)
r := rand.New(rs) // Mustn't use r and f concurrently!
for i := 0; i < 100; i++ {
var name string
var isNew bool
if currentNames.Len() == 0 || r.Intn(3) == 1 {
f.Fuzz(&name)
isNew = true
} else {
l := currentNames.List()
name = l[r.Intn(len(l))]
}
pod := &v1.Pod{}
f.Fuzz(pod)
pod.ObjectMeta.Name = name
pod.ObjectMeta.Namespace = "default"
// Add, update, or delete randomly.
// Note that these pods are not valid-- the fake source doesn't
// call validation or perform any other checking.
if isNew {
currentNames.Insert(name)
source.Add(pod)
continue
}
switch r.Intn(2) {
case 0:
currentNames.Insert(name)
source.Modify(pod)
case 1:
currentNames.Delete(name)
source.Delete(pod)
}
}
}()
}
wg.Wait()
// Let's wait for the controller to finish processing the things we just added.
// TODO: look in the queue to see how many items need to be processed.
time.Sleep(100 * time.Millisecond)
close(stop)
// TODO: Verify that no goroutines were leaked here and that everything shut
// down cleanly.
outputSetLock.Lock()
t.Logf("got: %#v", outputSet)
}
func Example() {
// source simulates an apiserver object endpoint.
source := fcache.NewFakeControllerSource()
// This will hold the downstream state, as we know it.
downstream := NewStore(DeletionHandlingMetaNamespaceKeyFunc)
// This will hold incoming changes. Note how we pass downstream in as a
// KeyLister, that way resync operations will result in the correct set
// of update/delete deltas.
fifo := NewDeltaFIFO(MetaNamespaceKeyFunc, nil, downstream)
// Let's do threadsafe output to get predictable test results.
deletionCounter := make(chan string, 1000)
cfg := &Config{
Queue: fifo,
ListerWatcher: source,
ObjectType: &v1.Pod{},
FullResyncPeriod: time.Millisecond * 100,
RetryOnError: false,
// Let's implement a simple controller that just deletes
// everything that comes in.
Process: func(obj interface{}) error {
// Obj is from the Pop method of the Queue we make above.
newest := obj.(Deltas).Newest()
if newest.Type != Deleted {
// Update our downstream store.
err := downstream.Add(newest.Object)
if err != nil {
return err
}
// Delete this object.
source.Delete(newest.Object.(runtime.Object))
} else {
// Update our downstream store.
err := downstream.Delete(newest.Object)
if err != nil {
return err
}
// fifo's KeyOf is easiest, because it handles
// DeletedFinalStateUnknown markers.
key, err := fifo.KeyOf(newest.Object)
if err != nil {
return err
}
// Report this deletion.
deletionCounter <- key
}
return nil
},
}
// Create the controller and run it until we close stop.
stop := make(chan struct{})
defer close(stop)
go New(cfg).Run(stop)
// Let's add a few objects to the source.
testIDs := []string{"a-hello", "b-controller", "c-framework"}
for _, name := range testIDs {
// Note that these pods are not valid-- the fake source doesn't
// call validation or anything.
source.Add(&v1.Pod{ObjectMeta: metav1.ObjectMeta{Name: name}})
}
// Let's wait for the controller to process the things we just added.
outputSet := sets.String{}
for i := 0; i < len(testIDs); i++ {
outputSet.Insert(<-deletionCounter)
}
for _, key := range outputSet.List() {
fmt.Println(key)
}
// Output:
// a-hello
// b-controller
// c-framework
}
// ipamGarbageCollection will release unused IP.
// kubenet uses the CNI bridge plugin, which stores allocated ips on file. Each
// file created under defaultIPAMDir has the format: ip/container-hash. So this
// routine looks for hashes that are not reported by the currently running docker,
// and invokes DelNetwork on each one. Note that this will only work for the
// current CNI bridge plugin, because we have no way of finding the NetNs.
func (plugin *kubenetNetworkPlugin) ipamGarbageCollection() {
glog.V(2).Infof("Starting IP garbage collection")
ipamDir := filepath.Join(defaultIPAMDir, KubenetPluginName)
files, err := ioutil.ReadDir(ipamDir)
if err != nil {
glog.Errorf("Failed to list files in %q: %v", ipamDir, err)
return
}
// gather containerIDs for allocated ips
ipContainerIdMap := make(map[string]string)
for _, file := range files {
// skip non checkpoint file
if ip := net.ParseIP(file.Name()); ip == nil {
continue
}
content, err := ioutil.ReadFile(filepath.Join(ipamDir, file.Name()))
if err != nil {
glog.Errorf("Failed to read file %v: %v", file, err)
}
ipContainerIdMap[file.Name()] = strings.TrimSpace(string(content))
}
// gather infra container IDs of current running Pods
runningContainerIDs := utilsets.String{}
pods, err := plugin.getNonExitedPods()
if err != nil {
glog.Errorf("Failed to get pods: %v", err)
return
}
for _, pod := range pods {
containerID, err := plugin.host.GetRuntime().GetPodContainerID(pod)
if err != nil {
glog.Warningf("Failed to get infra containerID of %q/%q: %v", pod.Namespace, pod.Name, err)
continue
}
runningContainerIDs.Insert(strings.TrimSpace(containerID.ID))
}
// release leaked ips
for ip, containerID := range ipContainerIdMap {
// if the container is not running, release IP
if runningContainerIDs.Has(containerID) {
continue
}
// CNI requires all config to be presented, although only containerID is needed in this case
rt := &libcni.RuntimeConf{
ContainerID: containerID,
IfName: network.DefaultInterfaceName,
// TODO: How do we find the NetNs of an exited container? docker inspect
// doesn't show us the pid, so we probably need to checkpoint
NetNS: "",
}
glog.V(2).Infof("Releasing IP %q allocated to %q.", ip, containerID)
// CNI bridge plugin should try to release IP and then return
if err := plugin.cniConfig.DelNetwork(plugin.netConfig, rt); err != nil {
glog.Errorf("Error while releasing IP: %v", err)
}
}
}
var nodeNames sets.String
f := framework.NewDefaultFramework("kubelet-perf")
var om *framework.RuntimeOperationMonitor
var rm *framework.ResourceMonitor
BeforeEach(func() {
// Wait until image prepull pod has completed so that they wouldn't
// affect the runtime cpu usage. Fail the test if prepulling cannot
// finish in time.
if err := framework.WaitForPodsSuccess(f.ClientSet, api.NamespaceSystem, framework.ImagePullerLabels, imagePrePullingLongTimeout); err != nil {
framework.Failf("Image puller didn't complete in %v, not running resource usage test since the metrics might be adultrated", imagePrePullingLongTimeout)
}
nodes := framework.GetReadySchedulableNodesOrDie(f.ClientSet)
nodeNames = sets.NewString()
for _, node := range nodes.Items {
nodeNames.Insert(node.Name)
}
om = framework.NewRuntimeOperationMonitor(f.ClientSet)
rm = framework.NewResourceMonitor(f.ClientSet, framework.TargetContainers(), containerStatsPollingPeriod)
rm.Start()
})
AfterEach(func() {
rm.Stop()
result := om.GetLatestRuntimeOperationErrorRate()
framework.Logf("runtime operation error metrics:\n%s", framework.FormatRuntimeOperationErrorRate(result))
})
framework.KubeDescribe("regular resource usage tracking", func() {
// We assume that the scheduler will make reasonable scheduling choices
// and assign ~N pods on the node.
// Although we want to track N pods per node, there are N + add-on pods
func TestList(t *testing.T) {
server, etcdStorage := newEtcdTestStorage(t, testapi.Default.Codec(), etcdtest.PathPrefix())
defer server.Terminate(t)
cacher := newTestCacher(etcdStorage, 10)
defer cacher.Stop()
podFoo := makeTestPod("foo")
podBar := makeTestPod("bar")
podBaz := makeTestPod("baz")
podFooPrime := makeTestPod("foo")
podFooPrime.Spec.NodeName = "fakeNode"
fooCreated := updatePod(t, etcdStorage, podFoo, nil)
_ = updatePod(t, etcdStorage, podBar, nil)
_ = updatePod(t, etcdStorage, podBaz, nil)
_ = updatePod(t, etcdStorage, podFooPrime, fooCreated)
// Create a pod in a namespace that contains "ns" as a prefix
// Make sure it is not returned in a watch of "ns"
podFooNS2 := makeTestPod("foo")
podFooNS2.Namespace += "2"
updatePod(t, etcdStorage, podFooNS2, nil)
deleted := api.Pod{}
if err := etcdStorage.Delete(context.TODO(), "pods/ns/bar", &deleted, nil); err != nil {
t.Errorf("Unexpected error: %v", err)
}
// We first List directly from etcd by passing empty resourceVersion,
// to get the current etcd resourceVersion.
rvResult := &api.PodList{}
if err := cacher.List(context.TODO(), "pods/ns", "", storage.Everything, rvResult); err != nil {
t.Errorf("Unexpected error: %v", err)
}
deletedPodRV := rvResult.ListMeta.ResourceVersion
result := &api.PodList{}
// We pass the current etcd ResourceVersion received from the above List() operation,
// since there is not easy way to get ResourceVersion of barPod deletion operation.
if err := cacher.List(context.TODO(), "pods/ns", deletedPodRV, storage.Everything, result); err != nil {
t.Errorf("Unexpected error: %v", err)
}
if result.ListMeta.ResourceVersion != deletedPodRV {
t.Errorf("Incorrect resource version: %v", result.ListMeta.ResourceVersion)
}
if len(result.Items) != 2 {
t.Errorf("Unexpected list result: %d", len(result.Items))
}
keys := sets.String{}
for _, item := range result.Items {
keys.Insert(item.Name)
}
if !keys.HasAll("foo", "baz") {
t.Errorf("Unexpected list result: %#v", result)
}
for _, item := range result.Items {
// unset fields that are set by the infrastructure
item.ResourceVersion = ""
item.CreationTimestamp = metav1.Time{}
if item.Namespace != "ns" {
t.Errorf("Unexpected namespace: %s", item.Namespace)
}
var expected *api.Pod
switch item.Name {
case "foo":
expected = podFooPrime
case "baz":
expected = podBaz
default:
t.Errorf("Unexpected item: %v", item)
}
if e, a := *expected, item; !reflect.DeepEqual(e, a) {
t.Errorf("Expected: %#v, got: %#v", e, a)
}
}
}
