first commit

internal/http/middleware/logging.go

@@ -0,0 +1,49 @@
+package middleware
+
+import (
+	"crypto/rand"
+	"encoding/hex"
+	"log/slog"
+	"net/http"
+	"time"
+
+	applog "github.com/noderunners/nip05api/internal/log"
+)
+
+type statusRecorder struct {
+	http.ResponseWriter
+	status int
+}
+
+func (s *statusRecorder) WriteHeader(code int) {
+	s.status = code
+	s.ResponseWriter.WriteHeader(code)
+}
+
+func newRequestID() string {
+	b := make([]byte, 8)
+	_, _ = rand.Read(b)
+	return hex.EncodeToString(b)
+}
+
+func Logging(next http.Handler) http.Handler {
+	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		id := r.Header.Get("X-Request-ID")
+		if id == "" {
+			id = newRequestID()
+		}
+		w.Header().Set("X-Request-ID", id)
+		ctx := applog.WithRequestID(r.Context(), id)
+		rec := &statusRecorder{ResponseWriter: w, status: 200}
+		start := time.Now()
+		next.ServeHTTP(rec, r.WithContext(ctx))
+		slog.Info("http",
+			"request_id", id,
+			"method", r.Method,
+			"path", r.URL.Path,
+			"status", rec.status,
+			"duration_ms", time.Since(start).Milliseconds(),
+			"remote", r.RemoteAddr,
+		)
+	})
+}