vendor: revendor metrics-server, custom-metrics-apiserver

This commit is contained in:
Sergiusz Urbaniak 2020-10-28 15:52:52 +01:00
parent 752ce84723
commit 523aa52367
1010 changed files with 91458 additions and 29107 deletions

View file

@ -45,7 +45,7 @@ import (
kubeinformers "k8s.io/client-go/informers"
"k8s.io/client-go/tools/cache"
"k8s.io/client-go/util/workqueue"
"k8s.io/klog"
"k8s.io/klog/v2"
fctypesv1a1 "k8s.io/api/flowcontrol/v1alpha1"
fcclientv1a1 "k8s.io/client-go/kubernetes/typed/flowcontrol/v1alpha1"
@ -84,7 +84,8 @@ type RequestDigest struct {
// this type and cfgMeal follow the convention that the suffix
// "Locked" means that the caller must hold the configController lock.
type configController struct {
queueSetFactory fq.QueueSetFactory
queueSetFactory fq.QueueSetFactory
obsPairGenerator metrics.TimedObserverPairGenerator
// configQueue holds `(interface{})(0)` when the configuration
// objects need to be reprocessed.
@ -144,6 +145,9 @@ type priorityLevelState struct {
// number of goroutines between Controller::Match and calling the
// returned StartFunction
numPending int
// Observers tracking number waiting, executing
obsPair metrics.TimedObserverPair
}
// NewTestableController is extra flexible to facilitate testing
@ -152,104 +156,123 @@ func newTestableController(
flowcontrolClient fcclientv1a1.FlowcontrolV1alpha1Interface,
serverConcurrencyLimit int,
requestWaitLimit time.Duration,
obsPairGenerator metrics.TimedObserverPairGenerator,
queueSetFactory fq.QueueSetFactory,
) *configController {
cfgCtl := &configController{
cfgCtlr := &configController{
queueSetFactory: queueSetFactory,
obsPairGenerator: obsPairGenerator,
serverConcurrencyLimit: serverConcurrencyLimit,
requestWaitLimit: requestWaitLimit,
flowcontrolClient: flowcontrolClient,
priorityLevelStates: make(map[string]*priorityLevelState),
}
klog.V(2).Infof("NewTestableController with serverConcurrencyLimit=%d, requestWaitLimit=%s", serverConcurrencyLimit, requestWaitLimit)
cfgCtl.initializeConfigController(informerFactory)
cfgCtlr.initializeConfigController(informerFactory)
// ensure the data structure reflects the mandatory config
cfgCtl.lockAndDigestConfigObjects(nil, nil)
return cfgCtl
cfgCtlr.lockAndDigestConfigObjects(nil, nil)
return cfgCtlr
}
// initializeConfigController sets up the controller that processes
// config API objects.
func (cfgCtl *configController) initializeConfigController(informerFactory kubeinformers.SharedInformerFactory) {
cfgCtl.configQueue = workqueue.NewNamedRateLimitingQueue(workqueue.NewItemExponentialFailureRateLimiter(200*time.Millisecond, 8*time.Hour), "priority_and_fairness_config_queue")
func (cfgCtlr *configController) initializeConfigController(informerFactory kubeinformers.SharedInformerFactory) {
cfgCtlr.configQueue = workqueue.NewNamedRateLimitingQueue(workqueue.NewItemExponentialFailureRateLimiter(200*time.Millisecond, 8*time.Hour), "priority_and_fairness_config_queue")
fci := informerFactory.Flowcontrol().V1alpha1()
pli := fci.PriorityLevelConfigurations()
fsi := fci.FlowSchemas()
cfgCtl.plLister = pli.Lister()
cfgCtl.plInformerSynced = pli.Informer().HasSynced
cfgCtl.fsLister = fsi.Lister()
cfgCtl.fsInformerSynced = fsi.Informer().HasSynced
cfgCtlr.plLister = pli.Lister()
cfgCtlr.plInformerSynced = pli.Informer().HasSynced
cfgCtlr.fsLister = fsi.Lister()
cfgCtlr.fsInformerSynced = fsi.Informer().HasSynced
pli.Informer().AddEventHandler(cache.ResourceEventHandlerFuncs{
AddFunc: func(obj interface{}) {
pl := obj.(*fctypesv1a1.PriorityLevelConfiguration)
klog.V(7).Infof("Triggered API priority and fairness config reloading due to creation of PLC %s", pl.Name)
cfgCtl.configQueue.Add(0)
cfgCtlr.configQueue.Add(0)
},
UpdateFunc: func(oldObj, newObj interface{}) {
newPL := newObj.(*fctypesv1a1.PriorityLevelConfiguration)
oldPL := oldObj.(*fctypesv1a1.PriorityLevelConfiguration)
if !apiequality.Semantic.DeepEqual(oldPL.Spec, newPL.Spec) {
klog.V(7).Infof("Triggered API priority and fairness config reloading due to spec update of PLC %s", newPL.Name)
cfgCtl.configQueue.Add(0)
cfgCtlr.configQueue.Add(0)
}
},
DeleteFunc: func(obj interface{}) {
name, _ := cache.DeletionHandlingMetaNamespaceKeyFunc(obj)
klog.V(7).Infof("Triggered API priority and fairness config reloading due to deletion of PLC %s", name)
cfgCtl.configQueue.Add(0)
cfgCtlr.configQueue.Add(0)
}})
fsi.Informer().AddEventHandler(cache.ResourceEventHandlerFuncs{
AddFunc: func(obj interface{}) {
fs := obj.(*fctypesv1a1.FlowSchema)
klog.V(7).Infof("Triggered API priority and fairness config reloading due to creation of FS %s", fs.Name)
cfgCtl.configQueue.Add(0)
cfgCtlr.configQueue.Add(0)
},
UpdateFunc: func(oldObj, newObj interface{}) {
newFS := newObj.(*fctypesv1a1.FlowSchema)
oldFS := oldObj.(*fctypesv1a1.FlowSchema)
if !apiequality.Semantic.DeepEqual(oldFS.Spec, newFS.Spec) {
klog.V(7).Infof("Triggered API priority and fairness config reloading due to spec update of FS %s", newFS.Name)
cfgCtl.configQueue.Add(0)
cfgCtlr.configQueue.Add(0)
}
},
DeleteFunc: func(obj interface{}) {
name, _ := cache.DeletionHandlingMetaNamespaceKeyFunc(obj)
klog.V(7).Infof("Triggered API priority and fairness config reloading due to deletion of FS %s", name)
cfgCtl.configQueue.Add(0)
cfgCtlr.configQueue.Add(0)
}})
}
func (cfgCtl *configController) Run(stopCh <-chan struct{}) error {
defer cfgCtl.configQueue.ShutDown()
// MaintainObservations keeps the observers from
// metrics.PriorityLevelConcurrencyObserverPairGenerator from falling
// too far behind
func (cfgCtlr *configController) MaintainObservations(stopCh <-chan struct{}) {
wait.Until(cfgCtlr.updateObservations, 10*time.Second, stopCh)
}
func (cfgCtlr *configController) updateObservations() {
cfgCtlr.lock.Lock()
defer cfgCtlr.lock.Unlock()
for _, plc := range cfgCtlr.priorityLevelStates {
if plc.queues != nil {
plc.queues.UpdateObservations()
}
}
}
func (cfgCtlr *configController) Run(stopCh <-chan struct{}) error {
defer cfgCtlr.configQueue.ShutDown()
klog.Info("Starting API Priority and Fairness config controller")
if ok := cache.WaitForCacheSync(stopCh, cfgCtl.plInformerSynced, cfgCtl.fsInformerSynced); !ok {
if ok := cache.WaitForCacheSync(stopCh, cfgCtlr.plInformerSynced, cfgCtlr.fsInformerSynced); !ok {
return fmt.Errorf("Never achieved initial sync")
}
klog.Info("Running API Priority and Fairness config worker")
wait.Until(cfgCtl.runWorker, time.Second, stopCh)
wait.Until(cfgCtlr.runWorker, time.Second, stopCh)
klog.Info("Shutting down API Priority and Fairness config worker")
return nil
}
func (cfgCtl *configController) runWorker() {
for cfgCtl.processNextWorkItem() {
func (cfgCtlr *configController) runWorker() {
for cfgCtlr.processNextWorkItem() {
}
}
func (cfgCtl *configController) processNextWorkItem() bool {
obj, shutdown := cfgCtl.configQueue.Get()
func (cfgCtlr *configController) processNextWorkItem() bool {
obj, shutdown := cfgCtlr.configQueue.Get()
if shutdown {
return false
}
func(obj interface{}) {
defer cfgCtl.configQueue.Done(obj)
if !cfgCtl.syncOne() {
cfgCtl.configQueue.AddRateLimited(obj)
defer cfgCtlr.configQueue.Done(obj)
if !cfgCtlr.syncOne() {
cfgCtlr.configQueue.AddRateLimited(obj)
} else {
cfgCtl.configQueue.Forget(obj)
cfgCtlr.configQueue.Forget(obj)
}
}(obj)
@ -259,19 +282,19 @@ func (cfgCtl *configController) processNextWorkItem() bool {
// syncOne attempts to sync all the API Priority and Fairness config
// objects. It either succeeds and returns `true` or logs an error
// and returns `false`.
func (cfgCtl *configController) syncOne() bool {
func (cfgCtlr *configController) syncOne() bool {
all := labels.Everything()
newPLs, err := cfgCtl.plLister.List(all)
newPLs, err := cfgCtlr.plLister.List(all)
if err != nil {
klog.Errorf("Unable to list PriorityLevelConfiguration objects: %s", err.Error())
return false
}
newFSs, err := cfgCtl.fsLister.List(all)
newFSs, err := cfgCtlr.fsLister.List(all)
if err != nil {
klog.Errorf("Unable to list FlowSchema objects: %s", err.Error())
return false
}
err = cfgCtl.digestConfigObjects(newPLs, newFSs)
err = cfgCtlr.digestConfigObjects(newPLs, newFSs)
if err == nil {
return true
}
@ -288,7 +311,7 @@ func (cfgCtl *configController) syncOne() bool {
// FlowSchemas --- with the work dvided among the passes according to
// those dependencies.
type cfgMeal struct {
cfgCtl *configController
cfgCtlr *configController
newPLStates map[string]*priorityLevelState
@ -315,9 +338,9 @@ type fsStatusUpdate struct {
}
// digestConfigObjects is given all the API objects that configure
// cfgCtl and writes its consequent new configState.
func (cfgCtl *configController) digestConfigObjects(newPLs []*fctypesv1a1.PriorityLevelConfiguration, newFSs []*fctypesv1a1.FlowSchema) error {
fsStatusUpdates := cfgCtl.lockAndDigestConfigObjects(newPLs, newFSs)
// cfgCtlr and writes its consequent new configState.
func (cfgCtlr *configController) digestConfigObjects(newPLs []*fctypesv1a1.PriorityLevelConfiguration, newFSs []*fctypesv1a1.FlowSchema) error {
fsStatusUpdates := cfgCtlr.lockAndDigestConfigObjects(newPLs, newFSs)
var errs []error
for _, fsu := range fsStatusUpdates {
enc, err := json.Marshal(fsu.condition)
@ -326,7 +349,7 @@ func (cfgCtl *configController) digestConfigObjects(newPLs []*fctypesv1a1.Priori
panic(fmt.Sprintf("Failed to json.Marshall(%#+v): %s", fsu.condition, err.Error()))
}
klog.V(4).Infof("Writing Condition %s to FlowSchema %s because its previous value was %s", string(enc), fsu.flowSchema.Name, fcfmt.Fmt(fsu.oldValue))
_, err = cfgCtl.flowcontrolClient.FlowSchemas().Patch(context.TODO(), fsu.flowSchema.Name, apitypes.StrategicMergePatchType, []byte(fmt.Sprintf(`{"status": {"conditions": [ %s ] } }`, string(enc))), metav1.PatchOptions{FieldManager: "api-priority-and-fairness-config-consumer-v1"}, "status")
_, err = cfgCtlr.flowcontrolClient.FlowSchemas().Patch(context.TODO(), fsu.flowSchema.Name, apitypes.StrategicMergePatchType, []byte(fmt.Sprintf(`{"status": {"conditions": [ %s ] } }`, string(enc))), metav1.PatchOptions{FieldManager: "api-priority-and-fairness-config-consumer-v1"}, "status")
if err != nil {
errs = append(errs, errors.Wrap(err, fmt.Sprintf("failed to set a status.condition for FlowSchema %s", fsu.flowSchema.Name)))
}
@ -337,11 +360,11 @@ func (cfgCtl *configController) digestConfigObjects(newPLs []*fctypesv1a1.Priori
return apierrors.NewAggregate(errs)
}
func (cfgCtl *configController) lockAndDigestConfigObjects(newPLs []*fctypesv1a1.PriorityLevelConfiguration, newFSs []*fctypesv1a1.FlowSchema) []fsStatusUpdate {
cfgCtl.lock.Lock()
defer cfgCtl.lock.Unlock()
func (cfgCtlr *configController) lockAndDigestConfigObjects(newPLs []*fctypesv1a1.PriorityLevelConfiguration, newFSs []*fctypesv1a1.FlowSchema) []fsStatusUpdate {
cfgCtlr.lock.Lock()
defer cfgCtlr.lock.Unlock()
meal := cfgMeal{
cfgCtl: cfgCtl,
cfgCtlr: cfgCtlr,
newPLStates: make(map[string]*priorityLevelState),
}
@ -351,16 +374,16 @@ func (cfgCtl *configController) lockAndDigestConfigObjects(newPLs []*fctypesv1a1
// Supply missing mandatory PriorityLevelConfiguration objects
if !meal.haveExemptPL {
meal.imaginePL(fcboot.MandatoryPriorityLevelConfigurationExempt, cfgCtl.requestWaitLimit)
meal.imaginePL(fcboot.MandatoryPriorityLevelConfigurationExempt, cfgCtlr.requestWaitLimit)
}
if !meal.haveCatchAllPL {
meal.imaginePL(fcboot.MandatoryPriorityLevelConfigurationCatchAll, cfgCtl.requestWaitLimit)
meal.imaginePL(fcboot.MandatoryPriorityLevelConfigurationCatchAll, cfgCtlr.requestWaitLimit)
}
meal.finishQueueSetReconfigsLocked()
// The new config has been constructed
cfgCtl.priorityLevelStates = meal.newPLStates
cfgCtlr.priorityLevelStates = meal.newPLStates
klog.V(5).Infof("Switched to new API Priority and Fairness configuration")
return meal.fsStatusUpdates
}
@ -369,11 +392,11 @@ func (cfgCtl *configController) lockAndDigestConfigObjects(newPLs []*fctypesv1a1
// Pretend broken ones do not exist.
func (meal *cfgMeal) digestNewPLsLocked(newPLs []*fctypesv1a1.PriorityLevelConfiguration) {
for _, pl := range newPLs {
state := meal.cfgCtl.priorityLevelStates[pl.Name]
state := meal.cfgCtlr.priorityLevelStates[pl.Name]
if state == nil {
state = &priorityLevelState{}
state = &priorityLevelState{obsPair: meal.cfgCtlr.obsPairGenerator.Generate(1, 1, []string{pl.Name})}
}
qsCompleter, err := qscOfPL(meal.cfgCtl.queueSetFactory, state.queues, pl, meal.cfgCtl.requestWaitLimit)
qsCompleter, err := queueSetCompleterForPL(meal.cfgCtlr.queueSetFactory, state.queues, pl, meal.cfgCtlr.requestWaitLimit, state.obsPair)
if err != nil {
klog.Warningf("Ignoring PriorityLevelConfiguration object %s because its spec (%s) is broken: %s", pl.Name, fcfmt.Fmt(pl.Spec), err)
continue
@ -439,8 +462,8 @@ func (meal *cfgMeal) digestFlowSchemasLocked(newFSs []*fctypesv1a1.FlowSchema) {
fsSeq = append(fsSeq, fcboot.MandatoryFlowSchemaCatchAll)
}
meal.cfgCtl.flowSchemas = fsSeq
if klog.V(5) {
meal.cfgCtlr.flowSchemas = fsSeq
if klog.V(5).Enabled() {
for _, fs := range fsSeq {
klog.Infof("Using FlowSchema %s", fcfmt.Fmt(fs))
}
@ -453,7 +476,7 @@ func (meal *cfgMeal) digestFlowSchemasLocked(newFSs []*fctypesv1a1.FlowSchema) {
// queues, otherwise start the quiescing process if that has not
// already been started.
func (meal *cfgMeal) processOldPLsLocked() {
for plName, plState := range meal.cfgCtl.priorityLevelStates {
for plName, plState := range meal.cfgCtlr.priorityLevelStates {
if meal.newPLStates[plName] != nil {
// Still desired and already updated
continue
@ -476,9 +499,9 @@ func (meal *cfgMeal) processOldPLsLocked() {
}
}
var err error
plState.qsCompleter, err = qscOfPL(meal.cfgCtl.queueSetFactory, plState.queues, plState.pl, meal.cfgCtl.requestWaitLimit)
plState.qsCompleter, err = queueSetCompleterForPL(meal.cfgCtlr.queueSetFactory, plState.queues, plState.pl, meal.cfgCtlr.requestWaitLimit, plState.obsPair)
if err != nil {
// This can not happen because qscOfPL already approved this config
// This can not happen because queueSetCompleterForPL already approved this config
panic(fmt.Sprintf("%s from name=%q spec=%s", err, plName, fcfmt.Fmt(plState.pl.Spec)))
}
if plState.pl.Spec.Limited != nil {
@ -509,7 +532,7 @@ func (meal *cfgMeal) finishQueueSetReconfigsLocked() {
// The use of math.Ceil here means that the results might sum
// to a little more than serverConcurrencyLimit but the
// difference will be negligible.
concurrencyLimit := int(math.Ceil(float64(meal.cfgCtl.serverConcurrencyLimit) * float64(plState.pl.Spec.Limited.AssuredConcurrencyShares) / meal.shareSum))
concurrencyLimit := int(math.Ceil(float64(meal.cfgCtlr.serverConcurrencyLimit) * float64(plState.pl.Spec.Limited.AssuredConcurrencyShares) / meal.shareSum))
metrics.UpdateSharedConcurrencyLimit(plName, concurrencyLimit)
if plState.queues == nil {
@ -521,10 +544,11 @@ func (meal *cfgMeal) finishQueueSetReconfigsLocked() {
}
}
// qscOfPL returns a pointer to an appropriate QueuingConfig or nil
// if no limiting is called for. Returns nil and an error if the given
// queueSetCompleterForPL returns an appropriate QueueSetCompleter for the
// given priority level configuration. Returns nil if that config
// does not call for limiting. Returns nil and an error if the given
// object is malformed in a way that is a problem for this package.
func qscOfPL(qsf fq.QueueSetFactory, queues fq.QueueSet, pl *fctypesv1a1.PriorityLevelConfiguration, requestWaitLimit time.Duration) (fq.QueueSetCompleter, error) {
func queueSetCompleterForPL(qsf fq.QueueSetFactory, queues fq.QueueSet, pl *fctypesv1a1.PriorityLevelConfiguration, requestWaitLimit time.Duration, intPair metrics.TimedObserverPair) (fq.QueueSetCompleter, error) {
if (pl.Spec.Type == fctypesv1a1.PriorityLevelEnablementExempt) != (pl.Spec.Limited == nil) {
return nil, errors.New("broken union structure at the top")
}
@ -553,7 +577,7 @@ func qscOfPL(qsf fq.QueueSetFactory, queues fq.QueueSet, pl *fctypesv1a1.Priorit
if queues != nil {
qsc, err = queues.BeginConfigChange(qcQS)
} else {
qsc, err = qsf.BeginConstruction(qcQS)
qsc, err = qsf.BeginConstruction(qcQS, intPair)
}
if err != nil {
err = errors.Wrap(err, fmt.Sprintf("priority level %q has QueuingConfiguration %#+v, which is invalid", pl.Name, qcAPI))
@ -594,9 +618,11 @@ func (meal *cfgMeal) presyncFlowSchemaStatus(fs *fctypesv1a1.FlowSchema, isDangl
}
// imaginePL adds a priority level based on one of the mandatory ones
// that does not actually exist (right now) as a real API object.
func (meal *cfgMeal) imaginePL(proto *fctypesv1a1.PriorityLevelConfiguration, requestWaitLimit time.Duration) {
klog.V(3).Infof("No %s PriorityLevelConfiguration found, imagining one", proto.Name)
qsCompleter, err := qscOfPL(meal.cfgCtl.queueSetFactory, nil, proto, requestWaitLimit)
obsPair := meal.cfgCtlr.obsPairGenerator.Generate(1, 1, []string{proto.Name})
qsCompleter, err := queueSetCompleterForPL(meal.cfgCtlr.queueSetFactory, nil, proto, requestWaitLimit, obsPair)
if err != nil {
// This can not happen because proto is one of the mandatory
// objects and these are not erroneous
@ -605,6 +631,7 @@ func (meal *cfgMeal) imaginePL(proto *fctypesv1a1.PriorityLevelConfiguration, re
meal.newPLStates[proto.Name] = &priorityLevelState{
pl: proto,
qsCompleter: qsCompleter,
obsPair: obsPair,
}
if proto.Spec.Limited != nil {
meal.shareSum += float64(proto.Spec.Limited.AssuredConcurrencyShares)
@ -624,14 +651,14 @@ func (immediateRequest) Finish(execute func()) bool {
// The returned bool indicates whether the request is exempt from
// limitation. The startWaitingTime is when the request started
// waiting in its queue, or `Time{}` if this did not happen.
func (cfgCtl *configController) startRequest(ctx context.Context, rd RequestDigest) (fs *fctypesv1a1.FlowSchema, pl *fctypesv1a1.PriorityLevelConfiguration, isExempt bool, req fq.Request, startWaitingTime time.Time) {
func (cfgCtlr *configController) startRequest(ctx context.Context, rd RequestDigest, queueNoteFn fq.QueueNoteFn) (fs *fctypesv1a1.FlowSchema, pl *fctypesv1a1.PriorityLevelConfiguration, isExempt bool, req fq.Request, startWaitingTime time.Time) {
klog.V(7).Infof("startRequest(%#+v)", rd)
cfgCtl.lock.Lock()
defer cfgCtl.lock.Unlock()
for _, fs := range cfgCtl.flowSchemas {
cfgCtlr.lock.Lock()
defer cfgCtlr.lock.Unlock()
for _, fs := range cfgCtlr.flowSchemas {
if matchesFlowSchema(rd, fs) {
plName := fs.Spec.PriorityLevelConfiguration.Name
plState := cfgCtl.priorityLevelStates[plName]
plState := cfgCtlr.priorityLevelStates[plName]
if plState.pl.Spec.Type == fctypesv1a1.PriorityLevelEnablementExempt {
klog.V(7).Infof("startRequest(%#+v) => fsName=%q, distMethod=%#+v, plName=%q, immediate", rd, fs.Name, fs.Spec.DistinguisherMethod, plName)
return fs, plState.pl, true, immediateRequest{}, time.Time{}
@ -641,16 +668,17 @@ func (cfgCtl *configController) startRequest(ctx context.Context, rd RequestDige
numQueues = plState.pl.Spec.Limited.LimitResponse.Queuing.Queues
}
var flowDistinguisher string
var hashValue uint64
if numQueues > 1 {
flowDistinguisher := computeFlowDistinguisher(rd, fs.Spec.DistinguisherMethod)
flowDistinguisher = computeFlowDistinguisher(rd, fs.Spec.DistinguisherMethod)
hashValue = hashFlowID(fs.Name, flowDistinguisher)
}
startWaitingTime = time.Now()
klog.V(7).Infof("startRequest(%#+v) => fsName=%q, distMethod=%#+v, plName=%q, numQueues=%d", rd, fs.Name, fs.Spec.DistinguisherMethod, plName, numQueues)
req, idle := plState.queues.StartRequest(ctx, hashValue, fs.Name, rd.RequestInfo, rd.User)
req, idle := plState.queues.StartRequest(ctx, hashValue, flowDistinguisher, fs.Name, rd.RequestInfo, rd.User, queueNoteFn)
if idle {
cfgCtl.maybeReapLocked(plName, plState)
cfgCtlr.maybeReapLocked(plName, plState)
}
return fs, plState.pl, false, req, startWaitingTime
}
@ -659,7 +687,7 @@ func (cfgCtl *configController) startRequest(ctx context.Context, rd RequestDige
// FlowSchema that matches everything. If somehow control reaches
// here, panic with some relevant information.
var catchAll *fctypesv1a1.FlowSchema
for _, fs := range cfgCtl.flowSchemas {
for _, fs := range cfgCtlr.flowSchemas {
if fs.Name == fctypesv1a1.FlowSchemaNameCatchAll {
catchAll = fs
}
@ -668,10 +696,10 @@ func (cfgCtl *configController) startRequest(ctx context.Context, rd RequestDige
}
// Call this after getting a clue that the given priority level is undesired and idle
func (cfgCtl *configController) maybeReap(plName string) {
cfgCtl.lock.Lock()
defer cfgCtl.lock.Unlock()
plState := cfgCtl.priorityLevelStates[plName]
func (cfgCtlr *configController) maybeReap(plName string) {
cfgCtlr.lock.Lock()
defer cfgCtlr.lock.Unlock()
plState := cfgCtlr.priorityLevelStates[plName]
if plState == nil {
klog.V(7).Infof("plName=%s, plState==nil", plName)
return
@ -684,17 +712,17 @@ func (cfgCtl *configController) maybeReap(plName string) {
}
}
klog.V(3).Infof("Triggered API priority and fairness config reloading because priority level %s is undesired and idle", plName)
cfgCtl.configQueue.Add(0)
cfgCtlr.configQueue.Add(0)
}
// Call this if both (1) plState.queues is non-nil and reported being
// idle, and (2) cfgCtl's lock has not been released since then.
func (cfgCtl *configController) maybeReapLocked(plName string, plState *priorityLevelState) {
// idle, and (2) cfgCtlr's lock has not been released since then.
func (cfgCtlr *configController) maybeReapLocked(plName string, plState *priorityLevelState) {
if !(plState.quiescing && plState.numPending == 0) {
return
}
klog.V(3).Infof("Triggered API priority and fairness config reloading because priority level %s is undesired and idle", plName)
cfgCtl.configQueue.Add(0)
cfgCtlr.configQueue.Add(0)
}
// computeFlowDistinguisher extracts the flow distinguisher according to the given method