allow throttling of exceptions

src/Illuminate/Foundation/Configuration/Exceptions.php

@@ -41,6 +41,19 @@ public function renderable(callable $renderUsing)
         return $this;
     }
 
+    /**
+     * Specify the callback that should be used to throttle reportable exceptions.
+     *
+     * @param  callable  $throttleUsing
+     * @return $this
+     */
+    public function throttle(callable $throttleUsing)
+    {
+        $this->handler->throttleUsing($throttleUsing);
+
+        return $this;
+    }
+
     /**
      * Register a new exception mapping.
      *

src/Illuminate/Foundation/Exceptions/Handler.php

@@ -80,6 +80,13 @@ class Handler implements ExceptionHandlerContract
      */
     protected $levels = [];
 
+    /**
+     * The callbacks that should be used to throttle reportable exceptions.
+     *
+     * @var array
+     */
+    protected $throttleCallbacks = [];
+
     /**
      * The callbacks that should be used to build exception context data.
      *
@@ -408,9 +415,38 @@ protected function shouldntReport(Throwable $e)
      */
     protected function throttle(Throwable $e)
     {
+        foreach ($this->throttleCallbacks as $throttleCallback) {
+            foreach ($this->firstClosureParameterTypes($throttleCallback) as $type) {
+                if (is_a($e, $type)) {
+                    $response = $throttleCallback($e);
+
+                    if (! is_null($response)) {
+                        return $response;
+                    }
+                }
+            }
+        }
+
         return Limit::none();
     }
 
+    /**
+     * Specify the callback that should be used to throttle reportable exceptions.
+     *
+     * @param  callable  $throttleUsing
+     * @return $this
+     */
+    public function throttleUsing(callable $throttleUsing)
+    {
+        if (! $throttleUsing instanceof Closure) {
+            $throttleUsing = Closure::fromCallable($throttleUsing);
+        }
+
+        $this->throttleCallbacks[] = $throttleUsing;
+
+        return $this;
+    }
+
     /**
      * Remove the given exception class from the list of exceptions that should be ignored.
      *