feat: add supervisor prototype with embedded frontend

internal/httpserver/middleware.go

@@ -0,0 +1,27 @@
+package httpserver
+
+import (
+	"log"
+	"net/http"
+	"time"
+)
+
+func LoggingMiddleware(logger *log.Logger, next http.Handler) http.Handler {
+	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		started := time.Now()
+		next.ServeHTTP(w, r)
+		logger.Printf("%s %s %s", r.Method, r.URL.Path, time.Since(started))
+	})
+}
+
+func RecoverMiddleware(logger *log.Logger, next http.Handler) http.Handler {
+	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		defer func() {
+			if rec := recover(); rec != nil {
+				logger.Printf("panic: %v", rec)
+				http.Error(w, "internal server error", http.StatusInternalServerError)
+			}
+		}()
+		next.ServeHTTP(w, r)
+	})
+}