enh/fix: filter content metadata

backend/open_webui/retrieval/vector/dbs/opensearch.py

@@ -2,7 +2,7 @@ from opensearchpy import OpenSearch
 from opensearchpy.helpers import bulk
 from typing import Optional
 
-from open_webui.retrieval.vector.utils import stringify_metadata
+from open_webui.retrieval.vector.utils import process_metadata
 from open_webui.retrieval.vector.main import (
     VectorDBBase,
     VectorItem,
@@ -201,7 +201,7 @@ class OpenSearchClient(VectorDBBase):
                     "_source": {
                         "vector": item["vector"],
                         "text": item["text"],
-                        "metadata": stringify_metadata(item["metadata"]),
+                        "metadata": process_metadata(item["metadata"]),
                     },
                 }
                 for item in batch
@@ -223,7 +223,7 @@ class OpenSearchClient(VectorDBBase):
                     "doc": {
                         "vector": item["vector"],
                         "text": item["text"],
-                        "metadata": stringify_metadata(item["metadata"]),
+                        "metadata": process_metadata(item["metadata"]),
                     },
                     "doc_as_upsert": True,
                 }