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97 lines
2.2 KiB
97 lines
2.2 KiB
// Copyright © 2023 OpenIM. All rights reserved.
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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 prome
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import (
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"bytes"
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"github.com/OpenIMSDK/Open-IM-Server/pkg/common/config"
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"net/http"
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"strconv"
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"github.com/gin-gonic/gin"
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"github.com/prometheus/client_golang/prometheus"
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"github.com/prometheus/client_golang/prometheus/promhttp"
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)
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func StartPrometheusSrv(prometheusPort int) error {
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if config.Config.Prometheus.Enable {
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http.Handle("/metrics", promhttp.Handler())
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err := http.ListenAndServe(":"+strconv.Itoa(prometheusPort), nil)
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return err
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}
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return nil
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}
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func PrometheusHandler() gin.HandlerFunc {
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h := promhttp.Handler()
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return func(c *gin.Context) {
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h.ServeHTTP(c.Writer, c.Request)
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}
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}
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type responseBodyWriter struct {
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gin.ResponseWriter
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body *bytes.Buffer
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}
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func (r responseBodyWriter) Write(b []byte) (int, error) {
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r.body.Write(b)
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return r.ResponseWriter.Write(b)
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}
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func PrometheusMiddleware(c *gin.Context) {
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Inc(ApiRequestCounter)
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w := &responseBodyWriter{body: &bytes.Buffer{}, ResponseWriter: c.Writer}
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c.Writer = w
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c.Next()
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if c.Writer.Status() == http.StatusOK {
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Inc(ApiRequestSuccessCounter)
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} else {
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Inc(ApiRequestFailedCounter)
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}
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}
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func Inc(counter prometheus.Counter) {
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if config.Config.Prometheus.Enable {
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if counter != nil {
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counter.Inc()
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}
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}
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}
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func Add(counter prometheus.Counter, add int) {
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if config.Config.Prometheus.Enable {
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if counter != nil {
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counter.Add(float64(add))
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}
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}
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}
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func GaugeInc(gauges prometheus.Gauge) {
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if config.Config.Prometheus.Enable {
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if gauges != nil {
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gauges.Inc()
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}
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}
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}
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func GaugeDec(gauges prometheus.Gauge) {
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if config.Config.Prometheus.Enable {
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if gauges != nil {
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gauges.Dec()
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}
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}
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}
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