AVRO-2172: Avro binding for gRPC (Java Implementation)

[srujann]

To enable avro based schema and RPC IDL to be transported over gRPC.

[brandonros]

Are there any plans to add Avro + gRPC support for any language other than Java?

I think some documentation at a low level on what the gRPC frames sent with the encoded Avro record look like would be a huge help.

Showing a simple cURL command too would be huge for me: https://github.com/salrashid123/grpc_curl

[srujann]

@brandonros High level details on java implementation are available here: https://issues.apache.org/jira/browse/AVRO-2172
Standard gRPC frame structure is used here with the serialized request payload, which is protobuf by default, swapped with that of Avro RPC request and response. To replicate the same in other language you will essentially need to implement: RequestMarshaller and ResponseMarshaller for that language.

[brandonros]

@brandonros High level details on java implementation are available here: https://issues.apache.org/jira/browse/AVRO-2172
Standard gRPC frame structure is used here with the serialized request payload, which is protobuf by default, swapped with that of Avro RPC request and response. To replicate the same in other language you will essentially need to implement: RequestMarshaller and ResponseMarshaller for that language.

@srujann, thank you for the response.

Are you able to share an example of a standard gRPC frame with an Avro RPC request? It'd be a huge help for me.