kubernetes-sigs/prometheus-adapter
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Add a flag metrics-start-duration

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This commit is contained in:
Nail Islamov 2018-11-28 12:13:07 +11:00
parent 3bd75f5c3a
commit 3f1b120eda
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GPG key ID: 36245154B2536826
3 changed files with 12 additions and 4 deletions
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7
cmd/adapter/adapter.go
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@ -53,6 +53,8 @@ type PrometheusAdapter struct {
AdapterConfigFile string
// MetricsRelistInterval is the interval at which to relist the set of available metrics
MetricsRelistInterval time.Duration
// MetricsMaxAge is the period to query available metrics for
MetricsMaxAge time.Duration
metricsConfig *adaptercfg.MetricsDiscoveryConfig
}
@ -83,6 +85,8 @@ func (cmd *PrometheusAdapter) addFlags() {
"and custom metrics API resources")
cmd.Flags().DurationVar(&cmd.MetricsRelistInterval, "metrics-relist-interval", cmd.MetricsRelistInterval, ""+
"interval at which to re-list the set of all available metrics from Prometheus")
cmd.Flags().DurationVar(&cmd.MetricsMaxAge, "metrics-max-age", cmd.MetricsMaxAge, ""+
"period for which to query the set of available metrics from Prometheus")
}
func (cmd *PrometheusAdapter) loadConfig() error {
@ -122,7 +126,7 @@ func (cmd *PrometheusAdapter) makeProvider(promClient prom.Client, stopCh <-chan
}
// construct the provider and start it
cmProvider, runner := cmprov.NewPrometheusProvider(mapper, dynClient, promClient, namers, cmd.MetricsRelistInterval)
cmProvider, runner := cmprov.NewPrometheusProvider(mapper, dynClient, promClient, namers, cmd.MetricsRelistInterval, cmd.MetricsMaxAge)
runner.RunUntil(stopCh)
return cmProvider, nil
@ -173,6 +177,7 @@ func main() {
cmd := &PrometheusAdapter{
PrometheusURL: "https://localhost",
MetricsRelistInterval: 10 * time.Minute,
MetricsMaxAge: 20 * time.Minute,
}
cmd.Name = "prometheus-metrics-adapter"
cmd.addFlags()

6
pkg/custom-provider/provider.go
View file

@ -55,9 +55,10 @@ type prometheusProvider struct {
SeriesRegistry
}
func NewPrometheusProvider(mapper apimeta.RESTMapper, kubeClient dynamic.Interface, promClient prom.Client, namers []MetricNamer, updateInterval time.Duration) (provider.CustomMetricsProvider, Runnable) {
func NewPrometheusProvider(mapper apimeta.RESTMapper, kubeClient dynamic.Interface, promClient prom.Client, namers []MetricNamer, updateInterval time.Duration, maxAge time.Duration) (provider.CustomMetricsProvider, Runnable) {
lister := &cachingMetricsLister{
updateInterval: updateInterval,
maxAge: maxAge,
promClient: promClient,
namers: namers,
@ -191,6 +192,7 @@ type cachingMetricsLister struct {
promClient prom.Client
updateInterval time.Duration
maxAge time.Duration
namers []MetricNamer
}
@ -212,7 +214,7 @@ type selectorSeries struct {
}
func (l *cachingMetricsLister) updateMetrics() error {
startTime := pmodel.Now().Add(-1 * l.updateInterval)
startTime := pmodel.Now().Add(-1 * l.maxAge)
// don't do duplicate queries when it's just the matchers that change
seriesCacheByQuery := make(map[prom.Selector][]prom.Series)

3
pkg/custom-provider/provider_test.go
View file

@ -32,6 +32,7 @@ import (
)
const fakeProviderUpdateInterval = 2 * time.Second
const fakeProviderStartDuration = 2 * time.Second
func setupPrometheusProvider() (provider.CustomMetricsProvider, *fakeprom.FakePrometheusClient) {
fakeProm := &fakeprom.FakePrometheusClient{}
@ -41,7 +42,7 @@ func setupPrometheusProvider() (provider.CustomMetricsProvider, *fakeprom.FakePr
namers, err := NamersFromConfig(cfg, restMapper())
Expect(err).NotTo(HaveOccurred())
prov, _ := NewPrometheusProvider(restMapper(), fakeKubeClient, fakeProm, namers, fakeProviderUpdateInterval)
prov, _ := NewPrometheusProvider(restMapper(), fakeKubeClient, fakeProm, namers, fakeProviderUpdateInterval, fakeProviderStartDuration)
containerSel := prom.MatchSeries("", prom.NameMatches("^container_.*"), prom.LabelNeq("container_name", "POD"), prom.LabelNeq("namespace", ""), prom.LabelNeq("pod_name", ""))
namespacedSel := prom.MatchSeries("", prom.LabelNeq("namespace", ""), prom.NameNotMatches("^container_.*"))