Refactor Python user API

examples/applications/llamaindex-cassandra-sink/python/llamaindex_cassandra.py

@@ -16,12 +16,12 @@
 
 import base64
 import io
-from typing import List, Optional, Dict, Any
+from typing import Dict, Any
 
 import openai
 from cassandra.auth import PlainTextAuthProvider
 from cassandra.cluster import Cluster
-from langstream import Sink, CommitCallback, Record
+from langstream import Sink, Record
 from llama_index import VectorStoreIndex, Document
 from llama_index.vector_stores import CassandraVectorStore
 

langstream-runtime/langstream-runtime-impl/src/main/python/langstream_grpc/tests/server_and_stub.py

@@ -1,3 +1,19 @@
+#
+# Copyright DataStax, Inc.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
 from typing import Optional
 
 import grpc