chore: Adding tracer and pprof handler

Signed-off-by: Vincent Boutour <[email protected]>

Author: ViBiOh

README.md

@@ -98,6 +98,10 @@ Usage of api:
         [server] Read Timeout {API_READ_TIMEOUT} (default "5s")
   -shutdownTimeout string
         [server] Shutdown Timeout {API_SHUTDOWN_TIMEOUT} (default "10s")
+  -tracerRate string
+        [tracer] Jaeger sample rate, 'always', 'never' or a float value {API_TRACER_RATE} (default "always")
+  -tracerURL string
+        [tracer] Jaeger endpoint URL (e.g. http://jaeger:14268/api/traces) {API_TRACER_URL}
   -url string
         [alcotest] URL to check {API_URL}
   -userAgent string

cmd/goweb/api.go

@@ -2,10 +2,13 @@ package main
 
 import (
 	"flag"
+	"fmt"
 	"net/http"
 	"os"
 	"strings"
 
+	_ "net/http/pprof"
+
 	"github.com/ViBiOh/flags"
 	"github.com/ViBiOh/goweb/pkg/delay"
 	"github.com/ViBiOh/goweb/pkg/dump"
@@ -18,7 +21,9 @@ import (
 	"github.com/ViBiOh/httputils/v4/pkg/owasp"
 	"github.com/ViBiOh/httputils/v4/pkg/prometheus"
 	"github.com/ViBiOh/httputils/v4/pkg/recoverer"
+	"github.com/ViBiOh/httputils/v4/pkg/request"
 	"github.com/ViBiOh/httputils/v4/pkg/server"
+	"github.com/ViBiOh/httputils/v4/pkg/tracer"
 )
 
 const (
@@ -36,6 +41,7 @@ func main() {
 
 	alcotestConfig := alcotest.Flags(fs, "")
 	loggerConfig := logger.Flags(fs, "logger")
+	tracerConfig := tracer.Flags(fs, "tracer")
 	prometheusConfig := prometheus.Flags(fs, "prometheus", flags.NewOverride("Gzip", false))
 	owaspConfig := owasp.Flags(fs, "")
 	corsConfig := cors.Flags(fs, "cors")
@@ -48,6 +54,15 @@ func main() {
 	logger.Global(logger.New(loggerConfig))
 	defer logger.Close()
 
+	tracerApp, err := tracer.New(tracerConfig)
+	logger.Fatal(err)
+	defer tracerApp.Close()
+	request.AddTracerToDefaultClient(tracerApp.GetProvider())
+
+	go func() {
+		fmt.Println(http.ListenAndServe("localhost:9999", http.DefaultServeMux))
+	}()
+
 	appServer := server.New(appServerConfig)
 	promServer := server.New(promServerConfig)
 	prometheusApp := prometheus.New(prometheusConfig)