Support for filtering exposed resource state metrics based on `namespace`

[Iceber]

What would you like to be added?

The clustersynchro-manager already provides --kube-state-metrics-namespaces and --kube-state-metrics-namespaces-denylist flags, but the code does not yet provide support fo this feature, so we can filter resources based on namespaces during resource sync.

clusterpedia/pkg/kube_state_metrics/metrics_store.go

Lines 172 to 199 in 7b7f4be

	type MetricsStore struct {
	*metricsstore.MetricsStore
	convertor func(obj interface{}) (interface{}, error)
	}
	func (store *MetricsStore) Add(obj interface{}) error {
	obj, err := store.convertor(obj)
	if err != nil {
	return err
	}
	return store.MetricsStore.Add(obj)
	}
	func (store *MetricsStore) Update(obj interface{}) error {
	obj, err := store.convertor(obj)
	if err != nil {
	return err
	}
	return store.MetricsStore.Update(obj)
	}
	func (store *MetricsStore) Delete(obj interface{}) error {
	return store.MetricsStore.Delete(obj)
	}

Why is this needed?

NONE

[clusterpedia-bot]

Hi @Iceber,
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We will look into it as soon as possible.

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