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receiver.go
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receiver.go
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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
package purefareceiver // import "github.com/open-telemetry/opentelemetry-collector-contrib/receiver/purefareceiver"
import (
"context"
"github.com/prometheus/common/model"
"github.com/prometheus/prometheus/config"
"go.opentelemetry.io/collector/component"
"go.opentelemetry.io/collector/consumer"
"go.opentelemetry.io/collector/receiver"
"github.com/open-telemetry/opentelemetry-collector-contrib/receiver/prometheusreceiver"
"github.com/open-telemetry/opentelemetry-collector-contrib/receiver/purefareceiver/internal"
)
var _ receiver.Metrics = (*purefaReceiver)(nil)
type purefaReceiver struct {
cfg *Config
set receiver.CreateSettings
next consumer.Metrics
wrapped receiver.Metrics
}
func newReceiver(cfg *Config, set receiver.CreateSettings, next consumer.Metrics) *purefaReceiver {
return &purefaReceiver{
cfg: cfg,
set: set,
next: next,
}
}
func (r *purefaReceiver) Start(ctx context.Context, compHost component.Host) error {
fact := prometheusreceiver.NewFactory()
scrapeCfgs := []*config.ScrapeConfig{}
commomLabel := model.LabelSet{
"environment": model.LabelValue(r.cfg.Env),
"host": model.LabelValue(r.cfg.ArrayName),
"fa_array_name": model.LabelValue(r.cfg.ArrayName),
}
// Extracting environment & fa_array_name from commonLabel
deploymentEnv := commomLabel["environment"]
ArrayName := commomLabel["fa_array_name"]
labelSet := model.LabelSet{
"environment": deploymentEnv,
"fa_array_name": ArrayName,
}
arrScraper := internal.NewScraper(ctx, internal.ScraperTypeArray, r.cfg.Endpoint, r.cfg.Array, r.cfg.Settings.ReloadIntervals.Array, commomLabel)
if scCfgs, err := arrScraper.ToPrometheusReceiverConfig(compHost, fact); err == nil {
scrapeCfgs = append(scrapeCfgs, scCfgs...)
} else {
return err
}
hostScraper := internal.NewScraper(ctx, internal.ScraperTypeHosts, r.cfg.Endpoint, r.cfg.Hosts, r.cfg.Settings.ReloadIntervals.Hosts, labelSet)
if scCfgs, err := hostScraper.ToPrometheusReceiverConfig(compHost, fact); err == nil {
scrapeCfgs = append(scrapeCfgs, scCfgs...)
} else {
return err
}
directoriesScraper := internal.NewScraper(ctx, internal.ScraperTypeDirectories, r.cfg.Endpoint, r.cfg.Directories, r.cfg.Settings.ReloadIntervals.Directories, commomLabel)
if scCfgs, err := directoriesScraper.ToPrometheusReceiverConfig(compHost, fact); err == nil {
scrapeCfgs = append(scrapeCfgs, scCfgs...)
} else {
return err
}
podsScraper := internal.NewScraper(ctx, internal.ScraperTypePods, r.cfg.Endpoint, r.cfg.Pods, r.cfg.Settings.ReloadIntervals.Pods, commomLabel)
if scCfgs, err := podsScraper.ToPrometheusReceiverConfig(compHost, fact); err == nil {
scrapeCfgs = append(scrapeCfgs, scCfgs...)
} else {
return err
}
volumesScraper := internal.NewScraper(ctx, internal.ScraperTypeVolumes, r.cfg.Endpoint, r.cfg.Volumes, r.cfg.Settings.ReloadIntervals.Volumes, labelSet)
if scCfgs, err := volumesScraper.ToPrometheusReceiverConfig(compHost, fact); err == nil {
scrapeCfgs = append(scrapeCfgs, scCfgs...)
} else {
return err
}
promRecvCfg := fact.CreateDefaultConfig().(*prometheusreceiver.Config)
promRecvCfg.PrometheusConfig = &prometheusreceiver.PromConfig{ScrapeConfigs: scrapeCfgs}
wrapped, err := fact.CreateMetricsReceiver(ctx, r.set, promRecvCfg, r.next)
if err != nil {
return err
}
r.wrapped = wrapped
err = r.wrapped.Start(ctx, compHost)
if err != nil {
return err
}
return nil
}
func (r *purefaReceiver) Shutdown(ctx context.Context) error {
if r.wrapped != nil {
return r.wrapped.Shutdown(ctx)
}
return nil
}