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chromium / external / github.com / grpc / grpc / HEAD / . / examples / python / retry
tree: ad1ca45deefe50ad7a9a3cc02ff360f267145fc9 [path history] [tgz]
  1. async_retry_client.py
  2. flaky_server.py
  3. helloworld.proto
  4. README.md
  5. retry_client.py
examples/python/retry/README.md

Retry Example in gRPC Python

Prerequisite

  • grpcio >= 1.39.0
  • grpcio-tools >= 1.39.0

Running the example

In terminal 1, start the flaky server:

python3 flaky_server.py

In terminal 2, start the retry clients:

python3 retry_client.py
# Or
python3 async_retry_client.py

Expect results

The client RPC will succeed, even with server injecting multiple errors. Here is an example server log:

$ python3 flaky_server.py
INFO:root:Starting flaky server on [::]:50051
INFO:root:Injecting error to RPC from ipv6:[::1]:54471
INFO:root:Successfully responding to RPC from ipv6:[::1]:54473
INFO:root:Injecting error to RPC from ipv6:[::1]:54491
INFO:root:Injecting error to RPC from ipv6:[::1]:54581
INFO:root:Injecting error to RPC from ipv6:[::1]:54581
INFO:root:Injecting error to RPC from ipv6:[::1]:54581
INFO:root:Injecting error to RPC from ipv6:[::1]:54581
INFO:root:Successfully responding to RPC from ipv6:[::1]:54581
INFO:root:Injecting error to RPC from ipv6:[::1]:55474
INFO:root:Injecting error to RPC from ipv6:[::1]:55474
INFO:root:Injecting error to RPC from ipv6:[::1]:55474
INFO:root:Injecting error to RPC from ipv6:[::1]:55474
INFO:root:Successfully responding to RPC from ipv6:[::1]:55474
INFO:root:Injecting error to RPC from ipv6:[::1]:55533
INFO:root:Injecting error to RPC from ipv6:[::1]:55533
INFO:root:Injecting error to RPC from ipv6:[::1]:55533
INFO:root:Successfully responding to RPC from ipv6:[::1]:55533