gRPC in Crystal?

[Roman Andreev]

Hi Everyone.

I'm want to start using a Crystal.
For now i have ruby services and they communicate via gRPC (protobuf). The Crystal have working implementation of gRPC or support in std lib? And which library implement HTTP/2?

Thanks.

[Brian J. Cardiff]

Hi Andreev,

Welcome to crystal :-)

There is no http2 support yet. But as https://github.com/manastech/crystal/pull/2009#issuecomment-171851780 there were some progress towards future support.

There is no protobuf support in the std lib. There is a nice json utils that allows you to declare the expected schema and serialize/deserialize data according to it.

There was a shard with msgpack support in case a binary format is needed.

On a personal taste if a gRPC is to be supported something inspired in ECR/process would allow to generate efficient code during compilation that will generate/parse binary/text messages without parsing the .proto file that defines the schema.

I hope is no discouraging that both answers are "no" in the end. But at the same time, it a space for nice contributions if is the are you are interested in.

Regards & welcome again,

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[Ary Borenszweig]

Hi,

I just found this:

https://github.com/teodor-pripoae/protokol

Is that protobuf? I searched "crystal protocol buffers"

(didn't try that library, though)

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[Roman Andreev]

Thanks for information. If so, i think that JSON may not be a bottleneck in my architecture. And i still try to implement it.