From fa356f2825ba2fdf42701bc96dd50ffbe663b4c4 Mon Sep 17 00:00:00 2001
From: Corvin Lasogga <corvin.lasogga@ilt-extern.fraunhofer.de>
Date: Thu, 28 Jul 2022 19:11:00 +0200
Subject: [PATCH] Added types for typing

---
 .../instrumentation/grpc/_types.py            | 29 +++++++++++++++++++
 1 file changed, 29 insertions(+)
 create mode 100644 instrumentation/opentelemetry-instrumentation-grpc/src/opentelemetry/instrumentation/grpc/_types.py

diff --git a/instrumentation/opentelemetry-instrumentation-grpc/src/opentelemetry/instrumentation/grpc/_types.py b/instrumentation/opentelemetry-instrumentation-grpc/src/opentelemetry/instrumentation/grpc/_types.py
new file mode 100644
index 0000000000..81f12ba943
--- /dev/null
+++ b/instrumentation/opentelemetry-instrumentation-grpc/src/opentelemetry/instrumentation/grpc/_types.py
@@ -0,0 +1,29 @@
+# Copyright The OpenTelemetry Authors
+#
+# 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.
+
+"""Internal types."""
+
+from typing import Dict, Iterator, TypeVar, Union
+
+import grpc
+
+
+Metadata = Dict[str, Union[str, bytes]]
+"""Metadata type."""
+
+ProtoMessage = TypeVar("ProtoMessage")
+"""Protobuf message type."""
+
+ProtoMessageOrIterator = Union[ProtoMessage, Iterator[ProtoMessage]]
+"""Type for a protobuf message or a iterator of protobuf messages."""