feat: Adding dump counter

Signed-off-by: Vincent Boutour <bob@vibioh.fr>

cmd/goweb/api.go

@@ -38,7 +38,7 @@ func main() {
 
 	appServer := server.New(config.appServer)
 
-	go appServer.Start(client.health.EndCtx(), httputils.Handler(newPort(config), client.health, recoverer.Middleware, client.telemetry.Middleware("http"), owasp.New(config.owasp).Middleware, cors.New(config.cors).Middleware))
+	go appServer.Start(client.health.EndCtx(), httputils.Handler(newPort(config, client), client.health, recoverer.Middleware, client.telemetry.Middleware("http"), owasp.New(config.owasp).Middleware, cors.New(config.cors).Middleware))
 
 	client.health.WaitForTermination(appServer.Done())
 

cmd/goweb/port.go

@@ -14,11 +14,11 @@ const (
 	delayPath = "/delay/"
 )
 
-func newPort(config configuration) http.Handler {
+func newPort(config configuration, client client) http.Handler {
 	mux := http.NewServeMux()
 
 	mux.Handle(helloPath, hello.Handler(config.hello))
-	mux.Handle(dumpPath, dump.Handler())
+	mux.Handle(dumpPath, dump.Handler(client.telemetry.MeterProvider()))
 	mux.Handle(delayPath, delay.Handler())
 
 	mux.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {

go.mod

@@ -7,6 +7,7 @@ toolchain go1.22.0
 require (
 	github.com/ViBiOh/flags v1.5.0
 	github.com/ViBiOh/httputils/v4 v4.74.0
+	go.opentelemetry.io/otel/metric v1.24.0
 )
 
 require (
@@ -23,7 +24,6 @@ require (
 	go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetricgrpc v1.24.0 // indirect
 	go.opentelemetry.io/otel/exporters/otlp/otlptrace v1.24.0 // indirect
 	go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc v1.24.0 // indirect
-	go.opentelemetry.io/otel/metric v1.24.0 // indirect
 	go.opentelemetry.io/otel/sdk v1.24.0 // indirect
 	go.opentelemetry.io/otel/sdk/metric v1.24.0 // indirect
 	go.opentelemetry.io/otel/trace v1.24.0 // indirect

pkg/dump/dump.go

@@ -2,6 +2,7 @@ package dump
 
 import (
 	"bytes"
+	"context"
 	"fmt"
 	"html"
 	"io"
@@ -12,10 +13,15 @@ import (
 
 	"github.com/ViBiOh/httputils/v4/pkg/httperror"
 	"github.com/ViBiOh/httputils/v4/pkg/telemetry"
+	"go.opentelemetry.io/otel/metric"
 )
 
-// Handler for dump request. Should be use with net/http
-func Handler() http.Handler {
+func Handler(meterProvider metric.MeterProvider) http.Handler {
+	counter, err := meterProvider.Meter("dd.goweb").Int64Counter("dump")
+	if err != nil {
+		slog.LogAttrs(context.Background(), slog.LevelError, "create dump counter", slog.Any("error", err))
+	}
+
 	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		ctx := r.Context()
 
@@ -27,6 +33,8 @@ func Handler() http.Handler {
 			return
 		}
 
+		counter.Add(ctx, 1)
+
 		slog.LogAttrs(ctx, slog.LevelInfo, "Dump of request", slog.String("content", value))
 
 		if _, err := w.Write([]byte(html.EscapeString(value))); err != nil {