c3ecb87a65
- created new subproject akka-protobuf (and added COPYING and LICENSE) - renamed com.google.protobuf -> akka.protobuf everywhere - also added such renaming step to the results of protoc compilation in project/Protobuf.scala - had to include transcriptions of Netty’s ProtobufEncoder/Decoder to make multi-node-testkit compile again
85 lines
3 KiB
Scala
85 lines
3 KiB
Scala
/**
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* Copyright (C) 2009-2015 Typesafe Inc. <http://www.typesafe.com>
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*/
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package akka.remote.serialization
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import java.lang.reflect.Method
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import java.util.concurrent.atomic.AtomicReference
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import akka.actor.{ ActorRef, ExtendedActorSystem }
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import akka.remote.WireFormats.ActorRefData
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import akka.serialization.{ Serialization, BaseSerializer }
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import akka.protobuf.Message
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import scala.annotation.tailrec
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object ProtobufSerializer {
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private val ARRAY_OF_BYTE_ARRAY = Array[Class[_]](classOf[Array[Byte]])
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/**
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* Helper to serialize an [[akka.actor.ActorRef]] to Akka's
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* protobuf representation.
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*/
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def serializeActorRef(ref: ActorRef): ActorRefData = {
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ActorRefData.newBuilder.setPath(Serialization.serializedActorPath(ref)).build
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}
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/**
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* Helper to materialize (lookup) an [[akka.actor.ActorRef]]
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* from Akka's protobuf representation in the supplied
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* [[akka.actor.ActorSystem]].
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*/
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def deserializeActorRef(system: ExtendedActorSystem, refProtocol: ActorRefData): ActorRef =
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system.provider.resolveActorRef(refProtocol.getPath)
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}
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/**
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* This Serializer serializes `akka.protobuf.Message`s
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*/
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class ProtobufSerializer(val system: ExtendedActorSystem) extends BaseSerializer {
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@deprecated("Use constructor with ExtendedActorSystem", "2.4")
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def this() = this(null)
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// TODO remove this when deprecated this() is removed
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override val identifier: Int =
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if (system eq null) 2
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else identifierFromConfig
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@deprecated("Will be removed without replacement", "2.4")
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val ARRAY_OF_BYTE_ARRAY = Array[Class[_]](classOf[Array[Byte]])
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private val parsingMethodBindingRef = new AtomicReference[Map[Class[_], Method]](Map.empty)
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override def includeManifest: Boolean = true
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override def fromBinary(bytes: Array[Byte], manifest: Option[Class[_]]): AnyRef = {
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manifest match {
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case Some(clazz) ⇒
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@tailrec
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def parsingMethod(method: Method = null): Method = {
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val parsingMethodBinding = parsingMethodBindingRef.get()
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parsingMethodBinding.get(clazz) match {
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case Some(cachedParsingMethod) ⇒ cachedParsingMethod
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case None ⇒
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val unCachedParsingMethod =
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if (method eq null) clazz.getDeclaredMethod("parseFrom", ProtobufSerializer.ARRAY_OF_BYTE_ARRAY: _*)
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else method
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if (parsingMethodBindingRef.compareAndSet(parsingMethodBinding, parsingMethodBinding.updated(clazz, unCachedParsingMethod)))
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unCachedParsingMethod
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else
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parsingMethod(unCachedParsingMethod)
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}
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}
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parsingMethod().invoke(null, bytes).asInstanceOf[Message]
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case None ⇒ throw new IllegalArgumentException("Need a protobuf message class to be able to serialize bytes using protobuf")
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}
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}
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override def toBinary(obj: AnyRef): Array[Byte] = obj match {
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case message: Message ⇒ message.toByteArray
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case _ ⇒ throw new IllegalArgumentException(s"Can't serialize a non-protobuf message using protobuf [$obj]")
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}
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}
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