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factory.go
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factory.go
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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
package kubeletstatsreceiver // import "github.com/open-telemetry/opentelemetry-collector-contrib/receiver/kubeletstatsreceiver"
import (
"context"
"time"
"go.opentelemetry.io/collector/component"
"go.opentelemetry.io/collector/consumer"
"go.opentelemetry.io/collector/receiver"
"go.opentelemetry.io/collector/receiver/scraperhelper"
"go.uber.org/zap"
"github.com/open-telemetry/opentelemetry-collector-contrib/internal/k8sconfig"
kube "github.com/open-telemetry/opentelemetry-collector-contrib/internal/kubelet"
"github.com/open-telemetry/opentelemetry-collector-contrib/receiver/kubeletstatsreceiver/internal/kubelet"
"github.com/open-telemetry/opentelemetry-collector-contrib/receiver/kubeletstatsreceiver/internal/metadata"
)
const (
metricGroupsConfig = "metric_groups"
)
var defaultMetricGroups = []kubelet.MetricGroup{
kubelet.ContainerMetricGroup,
kubelet.PodMetricGroup,
kubelet.NodeMetricGroup,
}
// NewFactory creates a factory for kubeletstats receiver.
func NewFactory() receiver.Factory {
return receiver.NewFactory(
metadata.Type,
createDefaultConfig,
receiver.WithMetrics(createMetricsReceiver, metadata.MetricsStability))
}
func createDefaultConfig() component.Config {
scs := scraperhelper.NewDefaultScraperControllerSettings(metadata.Type)
scs.CollectionInterval = 10 * time.Second
return &Config{
ScraperControllerSettings: scs,
ClientConfig: kube.ClientConfig{
APIConfig: k8sconfig.APIConfig{
AuthType: k8sconfig.AuthTypeTLS,
},
},
MetricsBuilderConfig: metadata.DefaultMetricsBuilderConfig(),
}
}
func createMetricsReceiver(
_ context.Context,
set receiver.CreateSettings,
baseCfg component.Config,
consumer consumer.Metrics,
) (receiver.Metrics, error) {
cfg := baseCfg.(*Config)
rOptions, err := cfg.getReceiverOptions()
if err != nil {
return nil, err
}
rest, err := restClient(set.Logger, cfg)
if err != nil {
return nil, err
}
scrp, err := newKubletScraper(rest, set, rOptions, cfg.MetricsBuilderConfig)
if err != nil {
return nil, err
}
return scraperhelper.NewScraperControllerReceiver(&cfg.ScraperControllerSettings, set, consumer, scraperhelper.AddScraper(scrp))
}
func restClient(logger *zap.Logger, cfg *Config) (kubelet.RestClient, error) {
clientProvider, err := kube.NewClientProvider(cfg.Endpoint, &cfg.ClientConfig, logger)
if err != nil {
return nil, err
}
client, err := clientProvider.BuildClient()
if err != nil {
return nil, err
}
rest := kubelet.NewRestClient(client)
return rest, nil
}