What is the best way to share a Channel between multiple gRPC requests?

[hyunilmmt]

I have a service that needs to reuse/share a single Channel instance between multiple requests, often simultaneously. The service wraps all gRPC calls with a context manager, and it sets its channel to None upon __aexit__. This results in calling Channel's __del__ method, and closing the connection. This is causing a race condition between simultaneous requests because the channel connection is closed while some of these requests are still using it.

Do you have any suggestions to resolve this issue wisely?

[vmagamedov]

You can create Channel once when your service starts and close it when your service shuts down. Underlying HTTP/2 connection will be established during first outgoing request and reconnections are automatic.