| // Licensed to 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. Apache Software Foundation (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 telemetry |
| |
| import "github.com/prometheus/client_golang/prometheus" |
| |
| // The counter metric. |
| type Counter struct { |
| Collector |
| name string // The name of counter. |
| counter *prometheus.CounterVec |
| } |
| |
| // NewCounter create a new counter if no metric with the same name exists. |
| func NewCounter(name, help string, labels ...string) *Counter { |
| lock.Lock() |
| defer lock.Unlock() |
| collector, ok := collectorContainer[name] |
| if !ok { |
| counter := &Counter{ |
| name: name, |
| counter: prometheus.NewCounterVec(prometheus.CounterOpts{ |
| Name: name, |
| Help: help, |
| }, labels), |
| } |
| Register(WithMeta(name, counter.counter)) |
| collectorContainer[name] = counter |
| collector = counter |
| } |
| return collector.(*Counter) |
| } |
| |
| // Add one. |
| func (c *Counter) Inc(labelValues ...string) { |
| c.counter.WithLabelValues(labelValues...).Inc() |
| } |
| |
| // Add float value. |
| func (c *Counter) Add(val float64, labelValues ...string) { |
| c.counter.WithLabelValues(labelValues...).Add(val) |
| } |