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83 lines
1.6 KiB
83 lines
1.6 KiB
package prome
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import (
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"Open_IM/pkg/common/config"
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"bytes"
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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 StartPromeSrv(promethuesPort 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(promethuesPort), 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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PromeInc(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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PromeInc(ApiRequestSuccessCounter)
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} else {
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PromeInc(ApiRequestFailedCounter)
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}
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}
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func PromeInc(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 PromeAdd(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 PromeGaugeInc(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 PromeGaugeDec(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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