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com.twitter.finagle.thrift.service

ThriftReqRepServicePerEndpoint

object ThriftReqRepServicePerEndpoint

Construct Service[scrooge.Request[method.Args],scrooge.Response[method.SuccessType]] interface for a ThriftMethod.

There are two ways to use a Scrooge-generated Thrift Service with Finagle:

1. Using a Service interface, i.e. a collection of Finagle Services, e.g., ReqRepServicePerEndpoint.

2. Using a method interface, i.e. a collection of methods returning Futures, e.g, MethodPerEndpoint.

Example: for a Thrift service IDL:

service Logger {
  string log(1: string message, 2: i32 logLevel);
  i32 getLogSize();
}

the Service interface, or ReqRepServicePerEndpoint, is

trait LoggerServiceIface {
  val log: com.twitter.finagle.Service[scrooge.Request[Logger.Log.Args], scrooge.Response[Logger.Log.SuccessType]]
  val getLogSize: com.twitter.finagle.Service[[scrooge.Request[Logger.GetLogSize.Args], scrooge.Response[Logger.GetLogSize.SuccessType]]
}

and the method interface, or MethodPerEndpoint, is

trait Logger[Future] {
  def log(message: String, logLevel: Int): Future[String]
  def getLogSize(): Future[Int]
}

ReqRepServicePerEndpoints can be modified and composed with Finagle Filters.

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  4. def apply(method: ThriftMethod, thriftService: Service[ThriftClientRequest, Array[Byte]], clientParam: RichClientParam): Service[Request[Args], Response[SuccessType]]

    Build a Service[scrooge.Request[method.Args],scrooge.Response[method.SuccessType]] from a given ThriftMethod.

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  18. def transformResult[A](result: Try[Response[A]]): Future[A]

    Transform a scrooge.Response[A] to a Future[A].

    Transform a scrooge.Response[A] to a Future[A].

    result

    scrooge.Response to transform.

    returns

    a Future[A] of the result or exception.

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