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feat: add Prometheus metrics (#439)

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* feat: add Prometheus metrics

* setup metrics using Prometheus client under /metrics endpoint
* add configuration value for metrics
* configure Prometheus middleware for generic metrics
* provide metrics for totals of users, gists and SSH keys
* modify test request to optionally return the response
* provide integration test for Prometheus metrics
* update documentation

* chore: make fmt
This commit is contained in:
Philipp Eckel
2025-03-17 14:30:38 +01:00
committed by GitHub
parent 8c7e941182
commit 1ec026e191
13 changed files with 328 additions and 21 deletions
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5
internal/web/server/middlewares.go
View File

@ -3,6 +3,7 @@ package server
import (
"errors"
"fmt"
"github.com/labstack/echo-contrib/echoprometheus"
"github.com/labstack/echo/v4"
"github.com/labstack/echo/v4/middleware"
"github.com/rs/zerolog/log"
@ -34,6 +35,10 @@ func (s *Server) useCustomContext() {
func (s *Server) registerMiddlewares() {
s.echo.Use(Middleware(dataInit).toEcho())
s.echo.Use(Middleware(locale).toEcho())
if config.C.MetricsEnabled {
p := echoprometheus.NewMiddleware("opengist")
s.echo.Use(p)
}
s.echo.Pre(middleware.MethodOverrideWithConfig(middleware.MethodOverrideConfig{
Getter: middleware.MethodFromForm("_method"),

19
internal/web/server/router.go
View File

@ -1,6 +1,13 @@
package server
import (
"net/http"
"os"
"path"
"path/filepath"
"strings"
"time"
"github.com/labstack/echo/v4"
"github.com/thomiceli/opengist/internal/config"
"github.com/thomiceli/opengist/internal/index"
@ -10,14 +17,9 @@ import (
"github.com/thomiceli/opengist/internal/web/handlers/gist"
"github.com/thomiceli/opengist/internal/web/handlers/git"
"github.com/thomiceli/opengist/internal/web/handlers/health"
"github.com/thomiceli/opengist/internal/web/handlers/metrics"
"github.com/thomiceli/opengist/internal/web/handlers/settings"
"github.com/thomiceli/opengist/public"
"net/http"
"os"
"path"
"path/filepath"
"strings"
"time"
)
func (s *Server) registerRoutes() {
@ -29,7 +31,10 @@ func (s *Server) registerRoutes() {
r.POST("/preview", gist.Preview, logged)
r.GET("/healthcheck", health.Healthcheck)
r.GET("/metrics", health.Metrics)
if config.C.MetricsEnabled {
r.GET("/metrics", metrics.Metrics)
}
r.GET("/register", auth.Register)
r.POST("/register", auth.ProcessRegister)