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topology-updater: make it possible to disable sleep-interval

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Especially convenient for testing porpuses and
completely harmless

Signed-off-by: Talor Itzhak <titzhak@redhat.com>
This commit is contained in:
Talor Itzhak 2023-01-23 18:44:54 +02:00
parent 8afd819132
commit 8924213d14
3 changed files with 9 additions and 5 deletions
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2
cmd/nfd-topology-updater/main.go
View file

@ -134,7 +134,7 @@ func initFlags(flagset *flag.FlagSet) (*topology.Args, *resourcemonitor.Args) {
flagset.StringVar(&args.KubeConfigFile, "kubeconfig", "", flagset.StringVar(&args.KubeConfigFile, "kubeconfig", "",
"Kube config file.") "Kube config file.")
flagset.DurationVar(&resourcemonitorArgs.SleepInterval, "sleep-interval", time.Duration(60)*time.Second, flagset.DurationVar(&resourcemonitorArgs.SleepInterval, "sleep-interval", time.Duration(60)*time.Second,
"Time to sleep between CR updates. Non-positive value implies no CR updatation (i.e. infinite sleep). [Default: 60s]") "Time to sleep between CR updates. zero means no CR updates on interval basis. [Default: 60s]")
flagset.StringVar(&resourcemonitorArgs.Namespace, "watch-namespace", "*", flagset.StringVar(&resourcemonitorArgs.Namespace, "watch-namespace", "*",
"Namespace to watch pods (for testing/debugging purpose). Use * for all namespaces.") "Namespace to watch pods (for testing/debugging purpose). Use * for all namespaces.")
flagset.StringVar(&resourcemonitorArgs.KubeletConfigURI, "kubelet-config-uri", "", flagset.StringVar(&resourcemonitorArgs.KubeletConfigURI, "kubelet-config-uri", "",

3
docs/reference/topology-updater-commandline-reference.md
View file

@ -77,8 +77,7 @@ nfd-topology-updater -oneshot -no-publish
### -sleep-interval ### -sleep-interval
The `-sleep-interval` specifies the interval between resource hardware The `-sleep-interval` specifies the interval between resource hardware
topology re-examination (and CR updates). A non-positive value implies topology re-examination (and CR updates). zero means no CR updates on interval basis.
infinite sleep interval, i.e. no re-detection is done.
Default: 60s Default: 60s

9
pkg/nfd-topology-updater/kubeletnotifier/kubeletnotifier.go
View file

@ -63,10 +63,15 @@ func New(sleepInterval time.Duration, dest chan<- Info, kubeletStateDir string)
} }
func (n *Notifier) Run() { func (n *Notifier) Run() {
t := time.Tick(n.sleepInterval) timeEvents := make(<-chan time.Time)
if n.sleepInterval > 0 {
ticker := time.NewTicker(n.sleepInterval)
timeEvents = ticker.C
}
for { for {
select { select {
case <-t: case <-timeEvents:
klog.V(5).Infof("timer update received") klog.V(5).Infof("timer update received")
i := Info{Event: IntervalBased} i := Info{Event: IntervalBased}
n.dest <- i n.dest <- i