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GreeterServiceImpl.scala
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GreeterServiceImpl.scala
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/*
* Copyright (C) 2018-2023 Lightbend Inc. <https://www.lightbend.com>
*/
//#full-service-impl
package example.myapp.helloworld
import scala.concurrent.Future
import akka.NotUsed
import akka.stream.Materializer
import akka.stream.scaladsl.Sink
import akka.stream.scaladsl.Source
import com.google.protobuf.timestamp.Timestamp
import example.myapp.helloworld.grpc._
class GreeterServiceImpl(implicit mat: Materializer) extends GreeterService {
import mat.executionContext
override def sayHello(in: HelloRequest): Future[HelloReply] = {
println(s"sayHello to ${in.name}")
Future.successful(HelloReply(s"Hello, ${in.name}", Some(Timestamp.apply(123456, 123))))
}
override def itKeepsTalking(in: Source[HelloRequest, NotUsed]): Future[HelloReply] = {
println(s"sayHello to in stream...")
in.runWith(Sink.seq).map(elements => HelloReply(s"Hello, ${elements.map(_.name).mkString(", ")}"))
}
override def itKeepsReplying(in: HelloRequest): Source[HelloReply, NotUsed] = {
println(s"sayHello to ${in.name} with stream of chars...")
Source(s"Hello, ${in.name}".toList).map(character => HelloReply(character.toString))
}
override def streamHellos(in: Source[HelloRequest, NotUsed]): Source[HelloReply, NotUsed] = {
println(s"sayHello to stream...")
in.map(request => HelloReply(s"Hello, ${request.name}"))
}
}
//#full-service-impl