Blocking on multiple grpc completion queues

[akshitha...@gmail.com]

Is it possible for one server thread to block (Next()) on multiple completion queues? I am thinking along the lines of an API that invokes an underlying select() that can monitor multiple RPC channels, waiting to see which of the underlying channels become ready.

[Sree Kuchibhotla]

Currently, it is not possible to do this. May consider exposing a select'able interface at some point (but no plans in the near-future)

thanks,

-Sree

On Thu, Aug 31, 2017 at 12:31 PM, <akshitha...@gmail.com> wrote:

Is it possible for one server thread to block (Next()) on multiple completion queues? I am thinking along the lines of an API that invokes an underlying select() that can monitor multiple RPC channels, waiting to see which of the underlying channels become ready.

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[akshitha...@gmail.com]

@Sree Thank you for your response!

I would like to develop a custom grpc API for this purpose. Could you give me some tips on the code sections or files that I can begin with?

Thanks!

Regards,

Akshitha

On Thursday, August 31, 2017 at 4:13:57 PM UTC-4, Sree Kuchibhotla wrote:

Currently, it is not possible to do this. May consider exposing a select'able interface at some point (but no plans in the near-future)

thanks,

-Sree

On Thu, Aug 31, 2017 at 12:31 PM, <akshitha...@gmail.com> wrote:

Is it possible for one server thread to block (Next()) on multiple completion queues? I am thinking along the lines of an API that invokes an underlying select() that can monitor multiple RPC channels, waiting to see which of the underlying channels become ready.

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[Sree Kuchibhotla]

Hi Akshita,

Just taking a step back, If you need some way to monitor multiple channels, one pattern that you can use is to just create one completion queue but use it for all "calls" (across all channels). This way, you just have one completion queue and its easier to handle with one thread

(i am assuming you are using async api)

It the above does not work for you and you have another proposal in mind, I encourage you to create a gRPC RFC (process here) outlining the API you are proposing - as a first step. This would be very helpful to get comments / ideas from others in grpc community.

thanks,

Sree

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[akshitha...@gmail.com]

This was enormously helpful. 

Thank you so much for your response!

Regards,

Akshitha