DatabricksVectorSearch doesn't allow access with service principal client ID/secret

[daisuke834]

VectorSearchClient of databricks.vector_search.client can optionally receive the optional arguments service_principal_client_id=None and service_principal_client_secret=None for allowing access with service principal client ID/secret.

However, DatabricksVectorSearch for langchain integration isn't capable for doing it because it calls VectorSearchClient() without any arguments.

        try:
            self.index = VectorSearchClient().get_index(
                endpoint_name=endpoint, index_name=index_name
            )

at

databricks-ai-bridge/integrations/langchain/src/databricks_langchain/vectorstores.py

Lines 233 to 234 in c9946ad

	self.index = VectorSearchClient().get_index(
	endpoint_name=endpoint, index_name=index_name

Could you fix the code like this?

--- a/vectorstores.py
+++ b/vectorstores.py
@@ -216,6 +216,11 @@ class DatabricksVectorSearch(VectorStore):
         embedding: Optional[Embeddings] = None,
         text_column: Optional[str] = None,
         columns: Optional[List[str]] = None,
+        workspace_url=None,
+        personal_access_token=None,
+        service_principal_client_id=None,
+        service_principal_client_secret=None,
+        disable_notice=False,
     ):
         if not (isinstance(index_name, str) and _INDEX_NAME_PATTERN.match(index_name)):
             raise ValueError(
@@ -234,7 +239,13 @@ class DatabricksVectorSearch(VectorStore):
             ) from e
 
         try:
-            self.index = VectorSearchClient().get_index(
+            self.index = VectorSearchClient(
+                    workspace_url=workspace_url,
+                    personal_access_token=personal_access_token,
+                    service_principal_client_id=service_principal_client_id,
+                    service_principal_client_secret=service_principal_client_secret,
+                    disable_notice=disable_notice
+                ).get_index(
                 endpoint_name=endpoint, index_name=index_name
             )
         except Exception as e:

Other alternative solution like #27 is also fine with me.

[chutch1122]

#27 was just merged!