78 lines
2.5 KiB
Go
78 lines
2.5 KiB
Go
// Copyright 2023 PingCAP, Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package metrics
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import (
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"fmt"
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"strings"
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"github.com/prometheus/client_golang/prometheus"
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)
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var constLabels prometheus.Labels
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// SetConstLabels sets constant labels for metrics.
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func SetConstLabels(kv ...string) {
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if len(kv)%2 == 1 {
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panic(fmt.Sprintf("got the odd number of inputs for const labels: %d", len(kv)))
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}
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constLabels = make(prometheus.Labels, len(kv)/2)
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for i := 0; i < len(kv); i += 2 {
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constLabels[strings.ToLower(kv[i])] = kv[i+1]
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}
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}
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// NewCounter wraps a prometheus.NewCounter.
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func NewCounter(opts prometheus.CounterOpts) prometheus.Counter {
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opts.ConstLabels = constLabels
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return prometheus.NewCounter(opts)
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}
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// NewCounterVec wraps a prometheus.NewCounterVec.
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func NewCounterVec(opts prometheus.CounterOpts, labelNames []string) *prometheus.CounterVec {
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opts.ConstLabels = constLabels
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return prometheus.NewCounterVec(opts, labelNames)
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}
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// NewGauge wraps a prometheus.NewGauge.
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func NewGauge(opts prometheus.GaugeOpts) prometheus.Gauge {
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opts.ConstLabels = constLabels
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return prometheus.NewGauge(opts)
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}
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// NewGaugeVec wraps a prometheus.NewGaugeVec.
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func NewGaugeVec(opts prometheus.GaugeOpts, labelNames []string) *prometheus.GaugeVec {
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opts.ConstLabels = constLabels
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return prometheus.NewGaugeVec(opts, labelNames)
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}
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// NewHistogram wraps a prometheus.NewHistogram.
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func NewHistogram(opts prometheus.HistogramOpts) prometheus.Histogram {
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opts.ConstLabels = constLabels
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return prometheus.NewHistogram(opts)
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}
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// NewHistogramVec wraps a prometheus.NewHistogramVec.
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func NewHistogramVec(opts prometheus.HistogramOpts, labelNames []string) *prometheus.HistogramVec {
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opts.ConstLabels = constLabels
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return prometheus.NewHistogramVec(opts, labelNames)
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}
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// NewSummaryVec wraps a prometheus.NewSummaryVec.
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func NewSummaryVec(opts prometheus.SummaryOpts, labelNames []string) *prometheus.SummaryVec {
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opts.ConstLabels = constLabels
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return prometheus.NewSummaryVec(opts, labelNames)
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}
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