| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You 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 prometheus |
| |
| import ( |
| "github.com/apache/servicecomb-service-center/pkg/log" |
| "github.com/apache/servicecomb-service-center/pkg/util" |
| "github.com/prometheus/client_golang/prometheus" |
| dto "github.com/prometheus/client_model/go" |
| ) |
| |
| // Vectors is unsafe, so all NewXXXVec funcs should be called during the initialization phase |
| var Vectors = make(map[string]prometheus.Collector) |
| |
| func registerMetrics(name string, vec prometheus.Collector) { |
| if _, ok := Vectors[name]; ok { |
| log.Warnf("found duplicate metrics name[%s], override!", name) |
| } |
| if err := prometheus.Register(vec); err != nil { |
| log.Fatalf(err, "register prometheus metrics[%s] failed", name) |
| } |
| Vectors[name] = vec |
| } |
| |
| func NewCounterVec(opts prometheus.CounterOpts, labelNames []string) *prometheus.CounterVec { |
| name := util.StringJoin([]string{opts.Subsystem, opts.Name}, "_") |
| vec := prometheus.NewCounterVec(opts, labelNames) |
| registerMetrics(name, vec) |
| return vec |
| } |
| |
| func NewGaugeVec(opts prometheus.GaugeOpts, labelNames []string) *prometheus.GaugeVec { |
| name := util.StringJoin([]string{opts.Subsystem, opts.Name}, "_") |
| vec := prometheus.NewGaugeVec(opts, labelNames) |
| registerMetrics(name, vec) |
| return vec |
| } |
| |
| func NewSummaryVec(opts prometheus.SummaryOpts, labelNames []string) *prometheus.SummaryVec { |
| name := util.StringJoin([]string{opts.Subsystem, opts.Name}, "_") |
| vec := prometheus.NewSummaryVec(opts, labelNames) |
| registerMetrics(name, vec) |
| return vec |
| } |
| |
| func Gather() ([]*dto.MetricFamily, error) { |
| return prometheus.DefaultGatherer.Gather() |
| } |