How should I extension grpc protocol?

Gatling (Open-Source)
1

I have the follow example code:

class Test extends Simulation {

  var input = "" // save result

  val scnFirst = scenario("scnFirst")
    .exec(
      grpc("request")
        .asyncUnaryCall(ScnGrpc.METHOD_FIRST_METHOD,
          FirstRequest(
            name = "thinkerou"
          ))
        .check ({ response =>
          input = response.result.get.message // save it
          response.result.get.code.equals(Code.OK)
        })
    )

  val scnSecond = scenario("scnSecond")
    .exec(
      grpc("request")
        .asyncUnaryCall(ScnGrpc.METHOD_SECOND_METHOD,
          SecondRequest(
            number = 123456
            message = input // HERE message should response result of scnFirst, BUT its value is empty, why?
          ))
        .check({ response =>
          response.result.get.code.equals(Code.OK)
        })
    )

  setUp(
    scnFirst.inject(constantUsersPerSec(users) during (duration seconds)).protocols(protocol),
    scnSecond.inject(constantUsersPerSec(users) during (duration seconds)).protocols(protocol)
  )

}

I have two grpc services, the response of first grpc service will input second grpc sevice.

I should how change my code? or should how extension gatling-grpc(https://github.com/macchiatow/gatling-grpc)? thanks a lot!!

2

This plugin is not an official one, so you won’t get an answer here.
You probably should try to directly reach the author, maybe with issues on his repo.

3

additional:
I run one grpc every time it’s OK, maybe this is reason is setUp can not sort ?

在 2018年7月12日星期四 UTC+8下午5:53:44，田欧写道：

4

@Stéphane Landelle thank you for replying, I know this plugin is not official plugin. But I use it now and I need pass var value, I also know I should use session to save var value, do I need to extend session in gatling-grpc plugin? thanks a lot!

在 2018年7月12日星期四 UTC+8下午5:59:42，Stéphane Landelle写道：

5

Hi,

I hope I am not too late to help.

Not knowing about the plugin you are using, I developed my own with the same purpose.
https://github.com/phisgr/gatling-grpc

I think you want to save the value in the user’s session attributes instead of a variable in the class.

To do that, see this line in my example.

Regards,
George