Harrison/optional ids opensearch (#6684)

Co-authored-by: taekimsmar <66041442+taekimsmar@users.noreply.github.com>

langchain/vectorstores/opensearch_vector_search.py

@@ -77,6 +77,7 @@ def _bulk_ingest_embeddings(
     embeddings: List[List[float]],
     texts: Iterable[str],
     metadatas: Optional[List[dict]] = None,
+    ids: Optional[List[str]] = None,
     vector_field: str = "vector_field",
     text_field: str = "text",
     mapping: Optional[Dict] = None,
@@ -88,7 +89,7 @@ def _bulk_ingest_embeddings(
     bulk = _import_bulk()
     not_found_error = _import_not_found_error()
     requests = []
-    ids = []
+    return_ids = []
     mapping = mapping
 
     try:
@@ -98,7 +99,7 @@ def _bulk_ingest_embeddings(
 
     for i, text in enumerate(texts):
         metadata = metadatas[i] if metadatas else {}
-        _id = str(uuid.uuid4())
+        _id = ids[i] if ids else str(uuid.uuid4())
         request = {
             "_op_type": "index",
             "_index": index_name,
@@ -108,10 +109,10 @@ def _bulk_ingest_embeddings(
             "_id": _id,
         }
         requests.append(request)
-        ids.append(_id)
+        return_ids.append(_id)
     bulk(client, requests)
     client.indices.refresh(index=index_name)
-    return ids
+    return return_ids
 
 
 def _default_scripting_text_mapping(
@@ -318,6 +319,7 @@ class OpenSearchVectorSearch(VectorStore):
         self,
         texts: Iterable[str],
         metadatas: Optional[List[dict]] = None,
+        ids: Optional[List[str]] = None,
         bulk_size: int = 500,
         **kwargs: Any,
     ) -> List[str]:
@@ -326,6 +328,7 @@ class OpenSearchVectorSearch(VectorStore):
         Args:
             texts: Iterable of strings to add to the vectorstore.
             metadatas: Optional list of metadatas associated with the texts.
+            ids: Optional list of ids to associate with the texts.
             bulk_size: Bulk API request count; Default: 500
 
         Returns:
@@ -358,10 +361,11 @@ class OpenSearchVectorSearch(VectorStore):
             self.index_name,
             embeddings,
             texts,
-            metadatas,
-            vector_field,
-            text_field,
-            mapping,
+            metadatas=metadatas,
+            ids=ids,
+            vector_field=vector_field,
+            text_field=text_field,
+            mapping=mapping,
         )
 
     def similarity_search(
@@ -679,9 +683,9 @@ class OpenSearchVectorSearch(VectorStore):
             index_name,
             embeddings,
             texts,
-            metadatas,
-            vector_field,
-            text_field,
-            mapping,
+            metadatas=metadatas,
+            vector_field=vector_field,
+            text_field=text_field,
+            mapping=mapping,
         )
         return cls(opensearch_url, index_name, embedding, **kwargs)