github.com/zhyoulun/cilium@v1.6.12/operator/metrics.go (about) 1 // Copyright 2019 Authors of Cilium 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); 4 // you may not use this file except in compliance with the License. 5 // You may obtain a copy of the License at 6 // 7 // http://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 // See the License for the specific language governing permissions and 13 // limitations under the License. 14 15 package main 16 17 import ( 18 "net/http" 19 20 "github.com/prometheus/client_golang/prometheus" 21 "github.com/prometheus/client_golang/prometheus/promhttp" 22 ) 23 24 const metricNamespace = "cilium_operator" 25 26 var registry *prometheus.Registry 27 28 func registerMetrics() { 29 registry = prometheus.NewPedanticRegistry() 30 registry.MustRegister(prometheus.NewProcessCollector(prometheus.ProcessCollectorOpts{Namespace: metricNamespace})) 31 go func() { 32 // The Handler function provides a default handler to expose metrics 33 // via an HTTP server. "/metrics" is the usual endpoint for that. 34 http.Handle("/metrics", promhttp.HandlerFor(registry, promhttp.HandlerOpts{})) 35 log.Fatal(http.ListenAndServe(metricsAddress, nil)) 36 }() 37 }