1 files changed, 56 insertions, 0 deletions
diff --git a/examples/python/retry/retry_client.py b/examples/python/retry/retry_client.py
new file mode 100644
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+++ b/examples/python/retry/retry_client.py
@@ -0,0 +1,56 @@
+# Copyright 2021 The gRPC 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.
+"""The Python implementation of the gRPC client-side retry example."""
+
+import json
+import logging
+
+import grpc
+
+helloworld_pb2, helloworld_pb2_grpc = grpc.protos_and_services(
+    "helloworld.proto")
+
+
+def run():
+    # The ServiceConfig proto definition can be found:
+    # https://github.com/grpc/grpc-proto/blob/ec886024c2f7b7f597ba89d5b7d60c3f94627b17/grpc/service_config/service_config.proto#L377
+    service_config_json = json.dumps({
+        "methodConfig": [{
+            # To apply retry to all methods, put [{}] in the "name" field
+            "name": [{
+                "service": "helloworld.Greeter",
+                "method": "SayHello"
+            }],
+            "retryPolicy": {
+                "maxAttempts": 5,
+                "initialBackoff": "0.1s",
+                "maxBackoff": "1s",
+                "backoffMultiplier": 2,
+                "retryableStatusCodes": ["UNAVAILABLE"],
+            },
+        }]
+    })
+    options = []
+    # NOTE: the retry feature will be enabled by default >=v1.40.0
+    options.append(("grpc.enable_retries", 1))
+    options.append(("grpc.service_config", service_config_json))
+    with grpc.insecure_channel('localhost:50051', options=options) as channel:
+        stub = helloworld_pb2_grpc.GreeterStub(channel)
+        response = stub.SayHello(helloworld_pb2.HelloRequest(name='you'))
+    print("Greeter client received: " + response.message)
+
+
+if __name__ == '__main__':
+    logging.basicConfig()
+    run()