Add total amount of items when aborting traversable normalization

src/Monolog/Formatter/NormalizerFormatter.php

@@ -80,7 +80,7 @@ class NormalizerFormatter implements FormatterInterface
 
             foreach ($data as $key => $value) {
                 if ($count++ >= 1000) {
-                    $normalized['...'] = 'Over 1000 items, aborting normalization';
+                    $normalized['...'] = 'Over 1000 items ('.($data instanceof \Generator ? 'generator function' : count($data).' total').'), aborting normalization';
                     break;
                 }
                 $normalized[$key] = $this->normalize($value);

tests/Monolog/Formatter/NormalizerFormatterTest.php

@@ -217,6 +217,24 @@ class NormalizerFormatterTest extends \PHPUnit_Framework_TestCase
         $this->assertEquals(@json_encode(array($resource)), $res);
     }
 
+    public function testNormalizeHandleLargeArrays()
+    {
+        $formatter = new NormalizerFormatter();
+        $largeArray = range(1, 2000);
+
+        $res = $formatter->format(array(
+            'level_name' => 'CRITICAL',
+            'channel' => 'test',
+            'message' => 'bar',
+            'context' => array($largeArray),
+            'datetime' => new \DateTime,
+            'extra' => array(),
+        ));
+
+        $this->assertCount(1000, $res['context'][0]);
+        $this->assertEquals('Over 1000 items (2000 total), aborting normalization', $res['context'][0]['...']);
+    }
+
     /**
      * @expectedException RuntimeException
      */