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collector.go
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collector.go
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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
package collection // import "github.com/open-telemetry/opentelemetry-collector-contrib/receiver/k8sclusterreceiver/internal/collection"
import (
"reflect"
"time"
agentmetricspb "github.com/census-instrumentation/opencensus-proto/gen-go/agent/metrics/v1"
quotav1 "github.com/openshift/api/quota/v1"
"go.opentelemetry.io/collector/pdata/pmetric"
"go.opentelemetry.io/collector/receiver"
"go.uber.org/zap"
appsv1 "k8s.io/api/apps/v1"
autoscalingv2 "k8s.io/api/autoscaling/v2"
autoscalingv2beta2 "k8s.io/api/autoscaling/v2beta2"
batchv1 "k8s.io/api/batch/v1"
batchv1beta1 "k8s.io/api/batch/v1beta1"
corev1 "k8s.io/api/core/v1"
"k8s.io/apimachinery/pkg/runtime"
"k8s.io/apimachinery/pkg/runtime/schema"
"k8s.io/apimachinery/pkg/types"
"k8s.io/client-go/tools/cache"
"github.com/open-telemetry/opentelemetry-collector-contrib/pkg/experimentalmetricmetadata"
internaldata "github.com/open-telemetry/opentelemetry-collector-contrib/pkg/translator/opencensus"
"github.com/open-telemetry/opentelemetry-collector-contrib/receiver/k8sclusterreceiver/internal/clusterresourcequota"
"github.com/open-telemetry/opentelemetry-collector-contrib/receiver/k8sclusterreceiver/internal/cronjob"
"github.com/open-telemetry/opentelemetry-collector-contrib/receiver/k8sclusterreceiver/internal/demonset"
"github.com/open-telemetry/opentelemetry-collector-contrib/receiver/k8sclusterreceiver/internal/deployment"
"github.com/open-telemetry/opentelemetry-collector-contrib/receiver/k8sclusterreceiver/internal/hpa"
"github.com/open-telemetry/opentelemetry-collector-contrib/receiver/k8sclusterreceiver/internal/jobs"
"github.com/open-telemetry/opentelemetry-collector-contrib/receiver/k8sclusterreceiver/internal/metadata"
"github.com/open-telemetry/opentelemetry-collector-contrib/receiver/k8sclusterreceiver/internal/namespace"
"github.com/open-telemetry/opentelemetry-collector-contrib/receiver/k8sclusterreceiver/internal/node"
"github.com/open-telemetry/opentelemetry-collector-contrib/receiver/k8sclusterreceiver/internal/pod"
"github.com/open-telemetry/opentelemetry-collector-contrib/receiver/k8sclusterreceiver/internal/replicaset"
"github.com/open-telemetry/opentelemetry-collector-contrib/receiver/k8sclusterreceiver/internal/replicationcontroller"
"github.com/open-telemetry/opentelemetry-collector-contrib/receiver/k8sclusterreceiver/internal/resourcequota"
"github.com/open-telemetry/opentelemetry-collector-contrib/receiver/k8sclusterreceiver/internal/statefulset"
)
// TODO: Consider moving some of these constants to
// https://go.opentelemetry.io/collector/blob/main/model/semconv/opentelemetry.go.
// DataCollector wraps around a metricsStore and a metadaStore exposing
// methods to perform on the underlying stores. DataCollector also provides
// an interface to interact with refactored code from SignalFx Agent which is
// confined to the collection package.
type DataCollector struct {
settings receiver.CreateSettings
metricsStore *metricsStore
metadataStore *metadata.Store
nodeConditionsToReport []string
allocatableTypesToReport []string
}
// NewDataCollector returns a DataCollector.
func NewDataCollector(set receiver.CreateSettings, nodeConditionsToReport, allocatableTypesToReport []string) *DataCollector {
return &DataCollector{
settings: set,
metricsStore: &metricsStore{
metricsCache: make(map[types.UID]pmetric.Metrics),
},
metadataStore: &metadata.Store{},
nodeConditionsToReport: nodeConditionsToReport,
allocatableTypesToReport: allocatableTypesToReport,
}
}
// SetupMetadataStore initializes a metadata store for the kubernetes kind.
func (dc *DataCollector) SetupMetadataStore(gvk schema.GroupVersionKind, store cache.Store) {
dc.metadataStore.Setup(gvk, store)
}
func (dc *DataCollector) RemoveFromMetricsStore(obj interface{}) {
if err := dc.metricsStore.remove(obj.(runtime.Object)); err != nil {
dc.settings.TelemetrySettings.Logger.Error(
"failed to remove from metric cache",
zap.String("obj", reflect.TypeOf(obj).String()),
zap.Error(err),
)
}
}
func (dc *DataCollector) UpdateMetricsStore(obj interface{}, md pmetric.Metrics) {
if err := dc.metricsStore.update(obj.(runtime.Object), md); err != nil {
dc.settings.TelemetrySettings.Logger.Error(
"failed to update metric cache",
zap.String("obj", reflect.TypeOf(obj).String()),
zap.Error(err),
)
}
}
func (dc *DataCollector) CollectMetricData(currentTime time.Time) pmetric.Metrics {
return dc.metricsStore.getMetricData(currentTime)
}
// SyncMetrics updates the metric store with latest metrics from the kubernetes object.
func (dc *DataCollector) SyncMetrics(obj interface{}) {
var md pmetric.Metrics
switch o := obj.(type) {
case *corev1.Pod:
md = ocsToMetrics(pod.GetMetrics(o, dc.settings.TelemetrySettings.Logger))
case *corev1.Node:
md = ocsToMetrics(node.GetMetrics(o, dc.nodeConditionsToReport, dc.allocatableTypesToReport, dc.settings.TelemetrySettings.Logger))
case *corev1.Namespace:
md = ocsToMetrics(namespace.GetMetrics(o))
case *corev1.ReplicationController:
md = ocsToMetrics(replicationcontroller.GetMetrics(o))
case *corev1.ResourceQuota:
md = ocsToMetrics(resourcequota.GetMetrics(o))
case *appsv1.Deployment:
md = ocsToMetrics(deployment.GetMetrics(o))
case *appsv1.ReplicaSet:
md = ocsToMetrics(replicaset.GetMetrics(o))
case *appsv1.DaemonSet:
md = ocsToMetrics(demonset.GetMetrics(o))
case *appsv1.StatefulSet:
md = ocsToMetrics(statefulset.GetMetrics(o))
case *batchv1.Job:
md = ocsToMetrics(jobs.GetMetrics(o))
case *batchv1.CronJob:
md = ocsToMetrics(cronjob.GetMetrics(o))
case *batchv1beta1.CronJob:
md = ocsToMetrics(cronjob.GetMetricsBeta(o))
case *autoscalingv2.HorizontalPodAutoscaler:
md = hpa.GetMetrics(dc.settings, o)
case *autoscalingv2beta2.HorizontalPodAutoscaler:
md = hpa.GetMetricsBeta(dc.settings, o)
case *quotav1.ClusterResourceQuota:
md = ocsToMetrics(clusterresourcequota.GetMetrics(o))
default:
return
}
if md.DataPointCount() == 0 {
return
}
dc.UpdateMetricsStore(obj, md)
}
// SyncMetadata updates the metric store with latest metrics from the kubernetes object
func (dc *DataCollector) SyncMetadata(obj interface{}) map[experimentalmetricmetadata.ResourceID]*metadata.KubernetesMetadata {
km := map[experimentalmetricmetadata.ResourceID]*metadata.KubernetesMetadata{}
switch o := obj.(type) {
case *corev1.Pod:
km = pod.GetMetadata(o, dc.metadataStore, dc.settings.TelemetrySettings.Logger)
case *corev1.Node:
km = node.GetMetadata(o)
case *corev1.ReplicationController:
km = replicationcontroller.GetMetadata(o)
case *appsv1.Deployment:
km = deployment.GetMetadata(o)
case *appsv1.ReplicaSet:
km = replicaset.GetMetadata(o)
case *appsv1.DaemonSet:
km = demonset.GetMetadata(o)
case *appsv1.StatefulSet:
km = statefulset.GetMetadata(o)
case *batchv1.Job:
km = jobs.GetMetadata(o)
case *batchv1.CronJob:
km = cronjob.GetMetadata(o)
case *batchv1beta1.CronJob:
km = cronjob.GetMetadataBeta(o)
case *autoscalingv2.HorizontalPodAutoscaler:
km = hpa.GetMetadata(o)
case *autoscalingv2beta2.HorizontalPodAutoscaler:
km = hpa.GetMetadataBeta(o)
}
return km
}
func ocsToMetrics(ocs []*agentmetricspb.ExportMetricsServiceRequest) pmetric.Metrics {
md := pmetric.NewMetrics()
for _, ocm := range ocs {
internaldata.OCToMetrics(ocm.Node, ocm.Resource, ocm.Metrics).ResourceMetrics().MoveAndAppendTo(md.ResourceMetrics())
}
return md
}