1 // Copyright 2015 The Prometheus Authors 2 // Licensed under the Apache License, Version 2.0 (the "License"); 3 // you may not use this file except in compliance with the License. 4 // You may obtain a copy of the License at 5 // 6 // http://www.apache.org/licenses/LICENSE-2.0 7 // 8 // Unless required by applicable law or agreed to in writing, software 9 // distributed under the License is distributed on an "AS IS" BASIS, 10 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 11 // See the License for the specific language governing permissions and 12 // limitations under the License. 13 14 // A minimal example of how to include Prometheus instrumentation. 15 package main 16 17 import ( 18 "flag" 19 "log" 20 "net/http" 21 22 "github.com/prometheus/client_golang/prometheus/collectors" 23 24 "github.com/prometheus/client_golang/prometheus" 25 "github.com/prometheus/client_golang/prometheus/promhttp" 26 ) 27 28 var addr = flag.String("listen-address", ":8080", "The address to listen on for HTTP requests.") 29 30 func main() { 31 flag.Parse() 32 33 // Create non-global registry. 34 reg := prometheus.NewRegistry() 35 36 // Add go runtime metrics and process collectors. 37 reg.MustRegister( 38 collectors.NewGoCollector(), 39 collectors.NewProcessCollector(collectors.ProcessCollectorOpts{}), 40 ) 41 42 // Expose /metrics HTTP endpoint using the created custom registry. 43 http.Handle("/metrics", promhttp.HandlerFor(reg, promhttp.HandlerOpts{Registry: reg})) 44 log.Fatal(http.ListenAndServe(*addr, nil)) 45 } 46