Pub/Sub implementation for grpc

[Gesly George]

Hi,
Is a pub-sub API being considered for grpc? If not, how complex would it be to implement one over grpc?

Thanks,
Gesly

[Gesly George]

It should be possible to build a pub-sub stack on top of the streaming api.

[Mugur Marculescu]

Hi Gesly,

Are you referring to the Google Cloud Pub-Sub API or do you mean some type of pub-sub on top of gRPC?

Thanks,

Mugur

On Saturday, June 20, 2015 at 1:25:09 AM UTC-7, Gesly George wrote:

[Gesly George]

Mugur,
I meant pub-sub on top of gRPC.

Thanks.

[Louis Ryan]

GRPC would make a good choice for the transport layer of a pubsub system. GRPC itself does not provide features like at-least-once-delivery, fanout, topic identification or ACLs that a pubsub broker implementation would provide. 

For example here is protobuf interface that can be used with GRPC for Google's PubSub system

https://github.com/google/googleapis/blob/master/google/pubsub/v1beta2/pubsub.proto

The only obvious operation missing from that interface is a streaming equivalent of the 'Pull' operation

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[Gesly George]

Louis,
Appreciate the pointer to Google's PubSub protobuf interface - useful.

Yeah, GRPC would be a good transport to build pub-sub on top off. With the streaming API, a push model should be possible as well.

Thanks for the reply.

[Gesly George]

If we can get eventually get to supporting grpc in the browser, now that makes this really powerful.

[Louis Ryan]

We'll get there with the browser one way or another. There's some active debate we're having with standards folks about the next generation networking APIs in browsers. See

https://github.com/whatwg/fetch/issues/34

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