Start pprof endpoint (#158)

Author: majst01

README.md

@@ -145,6 +145,19 @@ There is also a `cli` provided in the container which can be used to make calls
 docker run -it --rm --entrypoint /cli ghcr.io/metal-stack/go-ipam
 ```
 
+## Metrics
+
+```bash
+http://localhost:2112/metrics
+```
+
+## pprof
+
+```bash
+go tool pprof -http :8080 localhost:2113/debug/pprof/heap
+go tool pprof -http :8080 localhost:2113/debug/pprof/goroutine
+```
+
 ## Docker Compose example
 
 Ensure you have docker with compose support installed. Then execute the following command:

cmd/server/server.go

@@ -4,6 +4,7 @@ import (
 	"fmt"
 	"log/slog"
 	"net/http"
+	_ "net/http/pprof" // nolint:gosec
 	"time"
 
 	"connectrpc.com/connect"
@@ -73,6 +74,21 @@ func (s *server) Run() error {
 			return
 		}
 	}()
+	go func() {
+		s.log.Info("starting pprof endpoint of :2113")
+		// inspect via
+		// go tool pprof -http :8080 localhost:2113/debug/pprof/heap
+		// go tool pprof -http :8080 localhost:2113/debug/pprof/goroutine
+		server := http.Server{
+			Addr:              ":2113",
+			ReadHeaderTimeout: 1 * time.Minute,
+		}
+		err := server.ListenAndServe()
+		if err != nil {
+			s.log.Error("failed to start pprof endpoint", "error", err)
+			return
+		}
+	}()
 
 	otelInterceptor, err := otelconnect.NewInterceptor(otelconnect.WithMeterProvider(provider))
 	if err != nil {