forked from openshift/dedicated-admin-operator
/
metrics.go
63 lines (53 loc) · 1.87 KB
/
metrics.go
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// Copyright 2018 RedHat
//
// 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 (
"net/http"
operatorconfig "github.com/openshift/dedicated-admin-operator/config"
"github.com/prometheus/client_golang/prometheus"
)
const (
MetricsEndpoint = ":8080"
)
var (
metricBlacklistedGauge = prometheus.NewGaugeVec(prometheus.GaugeOpts{
Name: "dedicated_admin_blacklisted_projects",
Help: "Report how many namespaces have been blacklisted for dedicated-admin-operator",
}, []string{"name"})
)
// StartMetrics register metrics and exposes them
func StartMetrics() {
// Register metrics and start serving them on /metrics endpoint
RegisterMetrics()
http.Handle("/metrics", prometheus.Handler())
go http.ListenAndServe(MetricsEndpoint, nil)
}
// RegisterMetrics for the operator
func RegisterMetrics() error {
err := prometheus.Register(metricBlacklistedGauge)
return err
}
// IncEventGauge will increment a gauge and set appropriate labels.
func incEventGauge(gauge *prometheus.GaugeVec) {
gauge.With(prometheus.Labels{"name": operatorconfig.OperatorName}).Inc()
}
// UpdateBlacklistedGauge sets the gauge metric with the number of blacklisted projects
func UpdateBlacklistedGauge(blacklistedProjects map[string]bool) {
metricBlacklistedGauge.Reset()
for _, isBlacklisted := range blacklistedProjects {
if isBlacklisted {
incEventGauge(metricBlacklistedGauge)
}
}
}