fix(indexer): fix bug for indexer service dealing with empty doc

gnes/service/indexer.py

@@ -36,15 +36,16 @@ def _handler_index(self, msg: 'gnes_pb2.Message'):
         weights = []
 
         for d in msg.request.index.docs:
-            all_vecs.append(blob2array(d.chunk_embeddings))
-            doc_ids += [d.doc_id] * len(d.chunks)
-            if msg.request.index.docs.doc_type == 'TEXT':
-                offsets += [c.offset_1d for c in d.chunks]
-            elif msg.request.index.docs.doc_type == 'IMAGE':
-                offsets += [c.offset_nd for c in d.chunks]
-            elif msg.request.index.docs.doc_type == 'VIDEO':
-                offsets += [c.offset_1d for c in d.chunks]
-            weights += [c.weight for c in d.chunks]
+            if d.chunks:
+                all_vecs.append(blob2array(d.chunk_embeddings))
+                doc_ids += [d.doc_id] * len(d.chunks)
+                if msg.request.index.docs.doc_type == 'TEXT':
+                    offsets += [c.offset_1d for c in d.chunks]
+                elif msg.request.index.docs.doc_type == 'IMAGE':
+                    offsets += [c.offset_nd for c in d.chunks]
+                elif msg.request.index.docs.doc_type == 'VIDEO':
+                    offsets += [c.offset_1d for c in d.chunks]
+                weights += [c.weight for c in d.chunks]
 
         from ..indexer.base import BaseVectorIndexer, BaseTextIndexer
         if isinstance(self._model, BaseVectorIndexer):