forked from operator-framework/operator-sdk
/
metrics.go
83 lines (72 loc) · 2.19 KB
/
metrics.go
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// Copyright 2018 The Operator-SDK 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 metrics
import (
"fmt"
"github.com/prometheus/client_golang/prometheus"
"sigs.k8s.io/controller-runtime/pkg/metrics"
logf "sigs.k8s.io/controller-runtime/pkg/runtime/log"
)
const (
subsystem = "ansible_operator"
)
var (
reconcileResults = prometheus.NewGaugeVec(
prometheus.GaugeOpts{
Subsystem: subsystem,
Name: "reconcile_result",
Help: "Gauge of reconciles and their results.",
},
[]string{
"GVK",
"result",
})
reconciles = prometheus.NewHistogramVec(
prometheus.HistogramOpts{
Subsystem: subsystem,
Name: "reconciles",
Help: "How long in seconds a reconcile takes.",
},
[]string{
"GVK",
})
)
func init() {
metrics.Registry.MustRegister(reconcileResults)
metrics.Registry.MustRegister(reconciles)
}
// We will never want to panic our app because of metric saving.
// Therefore, we will recover our panics here and error log them
// for later diagnosis but will never fail the app.
func recoverMetricPanic() {
if r := recover(); r != nil {
logf.Log.WithName("metrics").Error(fmt.Errorf("%v", r),
"Recovering from metric function")
}
}
func ReconcileSucceeded(gvk string) {
defer recoverMetricPanic()
reconcileResults.WithLabelValues(gvk, "succeeded").Inc()
}
func ReconcileFailed(gvk string) {
// TODO: consider taking in a failure reason
defer recoverMetricPanic()
reconcileResults.WithLabelValues(gvk, "failed").Inc()
}
func ReconcileTimer(gvk string) *prometheus.Timer {
defer recoverMetricPanic()
return prometheus.NewTimer(prometheus.ObserverFunc(func(duration float64) {
reconciles.WithLabelValues(gvk).Observe(duration)
}))
}