feat: global error handler with template rendering

internal/proxy/director/options.go

@@ -1,18 +1,21 @@
 package director
 
 import (
+	"net/http"
 	"time"
 
 	"forge.cadoles.com/cadoles/bouncer/internal/cache"
 	"forge.cadoles.com/cadoles/bouncer/internal/cache/memory"
 	"forge.cadoles.com/cadoles/bouncer/internal/cache/ttl"
 	"forge.cadoles.com/cadoles/bouncer/internal/store"
+	"gitlab.com/wpetit/goweb/logger"
 )
 
 type Options struct {
-	Layers     []Layer
-	ProxyCache cache.Cache[string, []*store.Proxy]
-	LayerCache cache.Cache[string, []*store.Layer]
+	Layers      []Layer
+	ProxyCache  cache.Cache[string, []*store.Proxy]
+	LayerCache  cache.Cache[string, []*store.Layer]
+	HandleError HandleErrorFunc
 }
 
 type OptionFunc func(opts *Options)
@@ -30,6 +33,10 @@ func NewOptions(funcs ...OptionFunc) *Options {
 			memory.NewCache[string, time.Time](),
 			30*time.Second,
 		),
+		HandleError: func(w http.ResponseWriter, r *http.Request, status int, err error) {
+			logger.Error(r.Context(), err.Error(), logger.CapturedE(err))
+			http.Error(w, http.StatusText(status), status)
+		},
 	}
 
 	for _, fn := range funcs {
@@ -56,3 +63,9 @@ func WithLayerCache(cache cache.Cache[string, []*store.Layer]) OptionFunc {
 		opts.LayerCache = cache
 	}
 }
+
+func WithHandleErrorFunc(fn HandleErrorFunc) OptionFunc {
+	return func(opts *Options) {
+		opts.HandleError = fn
+	}
+}