Addition of object overview in exception message

src/Entity/Aggregator.php

@@ -43,6 +43,11 @@ public function __construct($entity, array $entityIdentifierValues)
         $this->objectID = get_class($this->entity).'::'.reset($entityIdentifierValues);
     }
 
+    public function getObjectID()
+    {
+        return $this->objectID;
+    }
+
     /**
      * Returns the entities class names that should be aggregated.
      *

src/IndexManager.php

@@ -78,9 +78,15 @@ public function index($entities, ObjectManager $objectManager)
             $this->remove($entitiesToBeRemoved, $objectManager);
         }
 
-        return $this->forEachChunk($objectManager, $entitiesToBeIndexed, function ($chunk) {
-            return $this->engine->update($chunk);
-        });
+        try {
+            return $this->forEachChunk($objectManager, $entitiesToBeIndexed, function ($chunk) {
+                return $this->engine->update($chunk);
+            });
+        } catch (\Exception $e) {
+            $message = $this->formatIndexingException($e, $entitiesToBeIndexed);
+
+            throw new \Exception($message);
+        }
     }
 
     public function remove($entities, ObjectManager $objectManager)
@@ -335,4 +341,35 @@ private function removePrefixFromIndexName($indexName)
     {
         return preg_replace('/^'.preg_quote($this->configuration['prefix'], '/').'/', '', $indexName);
     }
+
+    private function formatIndexingException($exception, $entitiesToBeIndexed)
+    {
+        // Retrieve the objectID if returned by the API
+        preg_match('/objectID=(.*?)\sis\stoo\sbig/', $exception->getMessage(), $matches);
+
+        if (count($matches) === 0) {
+            return $exception->getMessage();
+        }
+
+        $objectId = $matches[1];
+        $entityId = null;
+        $faultyEntity = null;
+        $detailedInfos = '';
+        foreach ($entitiesToBeIndexed as $entityToBeIndexed) {
+            if (get_parent_class($entityToBeIndexed) === Aggregator::class) {
+                $entityId = $entityToBeIndexed->getObjectID();
+            } else {
+                $entityId = (string) $entityToBeIndexed->getId();
+            }
+
+            if ($entityId === $objectId) {
+                $faultyEntity = $this->normalizer->serialize($entityToBeIndexed, 'json');
+                $truncatedEntity = strlen($faultyEntity) > 300 ?
+                    substr($faultyEntity, 0, 300) . '...' : $faultyEntity;
+                $detailedInfos = "\nObject overview: " . $truncatedEntity;
+            }
+        }
+
+        return $exception->getMessage() . $detailedInfos;
+    }
 }

tests/TestCase/IndexManagerTest.php

@@ -169,4 +169,45 @@ public function testIndexIfCondition()
         // The content aggregator expects 3 ( not 4, because of the index_if condition ).
         $this->assertEquals(3, $this->indexManager->count('', ContentAggregator::class));
     }
+
+    public function testIndexOversizedEntityData()
+    {
+        $this->expectException('Exception');
+        $this->expectExceptionMessageRegExp('/objectID=10/');
+        $this->expectExceptionMessageRegExp('/Object overview/');
+        $om = $this->get('doctrine')->getManager();
+
+        $posts = [];
+        for ($i = 0; $i < 3; $i++) {
+            $posts[] = $this->createPost($i);
+        }
+
+        $post = $this->createPost(10);
+        $post->setTitle(str_repeat('Foo',10000));
+        $posts[] = $post;
+
+        $this->indexManager->index($posts, $om);
+    }
+
+    /**
+     * @expectedException \Exception
+     */
+    public function testIndexOversizedAggregatorData()
+    {
+        $this->expectException('Exception');
+        $this->expectExceptionMessageRegExp('/objectID=Algolia\SearchBundle\TestApp\Entity\Image::1/');
+        $this->expectExceptionMessageRegExp('/Object overview/');
+        $om = $this->get('doctrine')->getManager();
+
+        $posts = [];
+        for ($i = 0; $i < 3; $i++) {
+            $posts[] = $this->createPost($i);
+        }
+
+        $comment = $this->createComment(1);
+        $image   = $this->createImage(1);
+        $image->setUrl(str_repeat('Foo',10000));
+
+        $this->indexManager->index(array_merge($posts, [$comment, $image]), $om);
+    }
 }