python support multi-thread

[rob.vai...@gmail.com]

hi

 

I want to know Is grpc python support multi-thread?

[Carl Mastrangelo]

Yes it does.  If you provide more information about what you want to do, we can give a better answer.

[Vaibhav Bedi]

My problem is

I want to write the grpc python multithread code for the client-server application, both client and server should use

threads in order to handle multi-requests at the same time. The client is simulating a gateway where it uploads data to the server. This data should be an array of objects.

The server is receiving these data and printing them in a multi-threaded way.

Thank you

ᐧ

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Sincerely,

Vaibhav Bedi

Email ID- rob.vai...@gmail.com

Contact Number-8950597710

Website-http://www.vaibhavbedi.com/

[Vaibhav Bedi]

Can you share some reference?

ᐧ

[Carl Mastrangelo]

+Lidi

[Srini Polavarapu]

On the server you can provide a threadpool like this: 

server = grpc.server(futures.ThreadPoolExecutor(max_workers=10))

This will spawn a maximum of 10 concurrent threads to handle requests in parallel. See this example: https://github.com/grpc/grpc/blob/master/examples/python/helloworld/greeter_server.py

On the client side, you can create one channel and pass it to your worker threads to create stubs on that channel. Worker threads can then do concurrent RPCs on their own stubs while using the same channel (connection) to the server.

[Vaibhav Bedi]

Thanks for your help. Can you suggest me how to pass an array of objects to the server in grpc?

I saw most of the examples they are using only string.

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[Robert Engels]

I believe if you declare the data as repeated it will automatically use arrays in the bindings. 

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[Vaibhav Bedi]

When I sent the objects using strings.there is no internal mechanism to sent that data in objects. it's giving an error.

ᐧ

[Vaibhav Bedi]

can you share some reference link how I can write an array of objects in the .proto file?

ᐧ

[Robert Engels]

Grpc is not serialization. You don’t write objects. You declare messages and they can be repeated. 

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[Vaibhav Bedi]

can I define the message only in strings not array?

[Robert Engels]

This explains it https://developers.google.com/protocol-buffers/docs/proto3

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