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instrument k8s-prometheus-adapter to expose prometheus metrics

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fixes #218
This commit is contained in:
pdbogen 2019-07-19 16:12:29 -07:00
parent 28a807aa9f
commit cbba53e16b
11 changed files with 308 additions and 14 deletions
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5
pkg/external-provider/external_series_registry.go
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@ -14,6 +14,7 @@ limitations under the License.
package provider
import (
"github.com/directxman12/k8s-prometheus-adapter/pkg/metrics"
"sync"
"github.com/kubernetes-incubator/custom-metrics-apiserver/pkg/provider"
@ -34,6 +35,9 @@ type ExternalSeriesRegistry interface {
// overridableSeriesRegistry is a basic SeriesRegistry
type externalSeriesRegistry struct {
// registry name is used for metrics &c
name string
// We lock when reading/writing metrics, and metricsInfo to prevent inconsistencies.
mu sync.RWMutex
@ -100,6 +104,7 @@ func (r *externalSeriesRegistry) filterAndStoreMetrics(result MetricUpdateResult
r.mu.Lock()
defer r.mu.Unlock()
metrics.RegistryMetrics.WithLabelValues(r.name).Set(float64(len(apiMetricsCache)))
r.metrics = apiMetricsCache
r.metricsInfo = rawMetricsCache