akka.grpc.gen.scaladsl.ScalaClientCodeGenerator.scala Maven / Gradle / Ivy

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Akka gRPC - Support for building streaming gRPC servers and clients on top of Akka Streams.

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/*
 * Copyright (C) 2018-2021 Lightbend Inc. 
 */

package akka.grpc.gen.scaladsl

import scala.collection.immutable
import akka.grpc.gen.{ BuildInfo, CodeGenerator, Logger }
import com.google.protobuf.compiler.PluginProtos.CodeGeneratorResponse
import protocbridge.Artifact
import templates.ScalaClient.txt._

trait ScalaClientCodeGenerator extends ScalaCodeGenerator {
  override def name = "akka-grpc-scaladsl-client"

  override def perServiceContent = super.perServiceContent + generateStub

  def generateStub(logger: Logger, service: Service): immutable.Seq[CodeGeneratorResponse.File] = {
    val b = CodeGeneratorResponse.File.newBuilder()
    b.setContent(Client(service).body)
    b.setName(s"${service.packageDir}/${service.name}Client.scala")
    logger.info(s"Generating Akka gRPC client for ${service.packageName}.${service.name}")
    immutable.Seq(b.build)
  }

  override val suggestedDependencies = (scalaBinaryVersion: CodeGenerator.ScalaBinaryVersion) =>
    // TODO: remove grpc-stub dependency once we have a akka-http based client #193
    Artifact("io.grpc", "grpc-stub", BuildInfo.grpcVersion) +: super.suggestedDependencies(scalaBinaryVersion)
}

object ScalaClientCodeGenerator extends ScalaClientCodeGenerator