prometheus/discovery/metrics.go

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// Copyright 2016 The Prometheus Authors
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package discovery
import (
"fmt"
"github.com/prometheus/client_golang/prometheus"
)
var (
clientGoRequestMetrics = &clientGoRequestMetricAdapter{}
clientGoWorkloadMetrics = &clientGoWorkqueueMetricsProvider{}
)
func init() {
clientGoRequestMetrics.RegisterWithK8sGoClient()
clientGoWorkloadMetrics.RegisterWithK8sGoClient()
}
// Metrics to be used with a discovery manager.
type Metrics struct {
FailedConfigs prometheus.Gauge
DiscoveredTargets *prometheus.GaugeVec
ReceivedUpdates prometheus.Counter
DelayedUpdates prometheus.Counter
SentUpdates prometheus.Counter
}
func NewMetrics(registerer prometheus.Registerer, sdManagerName string) (*Metrics, error) {
m := &Metrics{}
m.FailedConfigs = prometheus.NewGauge(
prometheus.GaugeOpts{
Name: "prometheus_sd_failed_configs",
Help: "Current number of service discovery configurations that failed to load.",
ConstLabels: prometheus.Labels{"name": sdManagerName},
},
)
m.DiscoveredTargets = prometheus.NewGaugeVec(
prometheus.GaugeOpts{
Name: "prometheus_sd_discovered_targets",
Help: "Current number of discovered targets.",
ConstLabels: prometheus.Labels{"name": sdManagerName},
},
[]string{"config"},
)
m.ReceivedUpdates = prometheus.NewCounter(
prometheus.CounterOpts{
Name: "prometheus_sd_received_updates_total",
Help: "Total number of update events received from the SD providers.",
ConstLabels: prometheus.Labels{"name": sdManagerName},
},
)
m.DelayedUpdates = prometheus.NewCounter(
prometheus.CounterOpts{
Name: "prometheus_sd_updates_delayed_total",
Help: "Total number of update events that couldn't be sent immediately.",
ConstLabels: prometheus.Labels{"name": sdManagerName},
},
)
m.SentUpdates = prometheus.NewCounter(
prometheus.CounterOpts{
Name: "prometheus_sd_updates_total",
Help: "Total number of update events sent to the SD consumers.",
ConstLabels: prometheus.Labels{"name": sdManagerName},
},
)
metrics := []prometheus.Collector{
m.FailedConfigs,
m.DiscoveredTargets,
m.ReceivedUpdates,
m.DelayedUpdates,
m.SentUpdates,
}
for _, collector := range metrics {
err := registerer.Register(collector)
if err != nil {
return nil, fmt.Errorf("failed to register discovery manager metrics: %w", err)
}
}
return m, nil
}