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我无法为 org.opencv.core.Mat 对象实现 Kryo 序列化程序，该对象表示例如视频文件的帧。这个想法是 Akka ActorSystem A 将灰度视频帧发送到系统 B 以检测其中的对象（使用akka-remote，而不是akka-cluster）。为此，必须对 Mat 类型的帧进行序列化并通过网络发送。但是，它似乎从未真正发送过和/或它阻止发送心跳的参与者导致系统失败。

有什么想法该怎么做吗？

我也在 Github 上问过：https ://github.com/romix/akka-kryo-serialization/issues/110

相关但未回答：kryo 序列化 overstorm

configuration.conf（在系统 A 和 B 上）

serializers {
  kryo = "com.romix.akka.serialization.kryo.KryoSerializer"
}
serialization-bindings {
  "org.opencv.core.Mat" = kryo
}
kryo  {
  kryo-custom-serializer-init = "de.itd.util.KryoInit"
  type = "nograph"
  idstrategy = "explicit"
  buffer-size = 4096
  max-buffer-size = -1
  use-manifests = true
  use-unsafe = false
  post-serialization-transformations = "lz4"
  kryo-trace = true
  resolve-subclasses = false
}

de.itd.util.KryoInit.scala（在系统 A 和 B 上）

package de.itd.util

import com.esotericsoftware.kryo.Kryo
import org.opencv.core.Mat

class KryoInit {
  def customize(kryo: Kryo): Unit  = {
    kryo.addDefaultSerializer(classOf[Mat], classOf[MatKryoSerializer])
    kryo.register(classOf[Mat], 21)
  }
}

de.itd.util.MatKryoSerializer（在系统 A 和 B 上）

package de.itd.util

import com.esotericsoftware.kryo.{Kryo, Serializer}
import com.esotericsoftware.kryo.io.{Input, Output}
import org.opencv.core.{CvType, Mat}

class MatKryoSerializer extends Serializer[Mat] {
  override def write(kryo: Kryo, output: Output, m: Mat): Unit = {
    val bufferSize: Int = m.rows * m.cols * m.channels
    val arrayByte: Array[Byte] = new Array[Byte](bufferSize)
    m.get(0, 0, arrayByte)

    output.write(arrayByte)
  }

  override def read(kryo: Kryo, input: Input, `type`: Class[Mat]): Mat = {
    val rows = 2160
    val cols = 4096
    val channels = 1
    val bufferSize = rows * cols * channels
    val arrayByte: Array[Byte] = new Array[Byte](bufferSize)

    val frame = new Mat(rows, cols , CvType.CV_8U)
    input.readBytes(arrayByte)
    frame.put(0, 0, arrayByte)

    frame
  }
}

系统 A 的日志（向系统 B 发送帧）

00:00 TRACE: [kryo] Registration required: true
00:00 TRACE: [kryo] References: false
00:00 TRACE: [kryo] Register class ID 21: org.opencv.core.Mat (de.itd.util.MatKryoSerializer)
[INFO] [01/31/2017 12:31:48.390] [JavaFX Application Thread] [akka.remote.Remoting] Starting remoting
[INFO] [01/31/2017 12:31:48.598] [JavaFX Application Thread] [akka.remote.Remoting] Remoting started; listening on addresses :[akka.tcp://MainActorSystem@10.150.80.177:2552]
[INFO] [01/31/2017 12:31:48.602] [JavaFX Application Thread] [akka.remote.Remoting] Remoting now listens on addresses: [akka.tcp://MainActorSystem@10.150.80.177:2552]
12:31:48.633 [JavaFX Application Thread] INFO de.itd.controller.MainViewController - MainActorSystem started.
12:31:49.168 [MainActorSystem-akka.actor.default-dispatcher-2] INFO de.itd.actor.local.MainActor - Detector DetectionActor-0 registered.
12:31:54.788 [JavaFX Application Thread] INFO de.itd.controller.MainViewController - detectCars
12:31:56.318 [MainActorSystem-akka.actor.default-dispatcher-4] INFO de.itd.actor.local.MainActor - DetectionActor-0 asked for a frame.
00:08 TRACE: [kryo.FieldSerializerConfig] useAsm: false
00:08 TRACE: [kryo.FieldSerializerConfig] useAsm: false
00:08 TRACE: [kryo] Register class ID 0: int (com.esotericsoftware.kryo.serializers.DefaultSerializers$IntSerializer)
00:08 TRACE: [kryo] Register class ID 1: String (com.esotericsoftware.kryo.serializers.DefaultSerializers$StringSerializer)
00:08 TRACE: [kryo] Register class ID 2: float (com.esotericsoftware.kryo.serializers.DefaultSerializers$FloatSerializer)
00:08 TRACE: [kryo] Register class ID 3: boolean (com.esotericsoftware.kryo.serializers.DefaultSerializers$BooleanSerializer)
00:08 TRACE: [kryo] Register class ID 4: byte (com.esotericsoftware.kryo.serializers.DefaultSerializers$ByteSerializer)
00:08 TRACE: [kryo] Register class ID 5: char (com.esotericsoftware.kryo.serializers.DefaultSerializers$CharSerializer)
00:08 TRACE: [kryo] Register class ID 6: short (com.esotericsoftware.kryo.serializers.DefaultSerializers$ShortSerializer)
00:08 TRACE: [kryo] Register class ID 7: long (com.esotericsoftware.kryo.serializers.DefaultSerializers$LongSerializer)
00:08 TRACE: [kryo] Register class ID 8: double (com.esotericsoftware.kryo.serializers.DefaultSerializers$DoubleSerializer)
00:08 TRACE: [kryo] Register class ID 9: void (com.esotericsoftware.kryo.serializers.DefaultSerializers$VoidSerializer)
00:08 TRACE: [kryo] Register class ID 10: scala.Enumeration$Val (com.romix.scala.serialization.kryo.EnumerationSerializer)
00:08 TRACE: [kryo] Register class ID 11: scala.Enumeration$Value (com.romix.scala.serialization.kryo.EnumerationSerializer)
00:08 TRACE: [kryo] Registration required: true
00:08 TRACE: [kryo] References: false
00:08 TRACE: [kryo] Register class ID 21: org.opencv.core.Mat (de.itd.util.MatKryoSerializer)
00:08 DEBUG: [kryo] Write: Mat [ 2160*4096*CV_8UC1, isCont=true, isSubmat=false, nativeObj=0x7feb070c0bd0, dataAddr=0x145725020 ]
00:08 TRACE: [kryo] Object graph complete.
[WARN] [01/31/2017 12:32:07.645] [MainActorSystem-akka.remote.default-remote-dispatcher-5] [akka.tcp://MainActorSystem@10.150.80.177:2552/system/remote-watcher] Detected unreachable: [akka.tcp://RemoteActorSystem@10.150.20.159:2553]
[WARN] [01/31/2017 12:32:07.650] [MainActorSystem-akka.remote.default-remote-dispatcher-13] [akka.remote.Remoting] Association to [akka.tcp://RemoteActorSystem@10.150.20.159:2553] having UID [-664475844] is irrecoverably failed. UID is now quarantined and all messages to this UID will be delivered to dead letters. Remote actorsystem must be restarted to recover from this situation.
[INFO] [01/31/2017 12:32:08.288] [MainActorSystem-akka.actor.default-dispatcher-4] [akka://MainActorSystem/system/transports/akkaprotocolmanager.tcp0/akkaProtocol-tcp%3A%2F%2FRemoteActorSystem%4010.150.20.159%3A2553-1] Message [akka.remote.transport.AssociationHandle$InboundPayload] from Actor[akka://MainActorSystem/deadLetters] to Actor[akka://MainActorSystem/system/transports/akkaprotocolmanager.tcp0/akkaProtocol-tcp%3A%2F%2FRemoteActorSystem%4010.150.20.159%3A2553-1#-764637076] was not delivered. [1] dead letters encountered. This logging can be turned off or adjusted with configuration settings 'akka.log-dead-letters' and 'akka.log-dead-letters-during-shutdown'.

系统 B 的日志（应该收到系统 A 的帧）

00:00 TRACE: [kryo] Registration required: true
00:00 TRACE: [kryo] References: false
00:00 TRACE: [kryo] Register class ID 21: org.opencv.core.Mat (de.itd.util.MatKryoSerializer)
[INFO] [01/31/2017 12:31:29.946] [main] [akka.remote.Remoting] Starting remoting
[INFO] [01/31/2017 12:31:30.253] [main] [akka.remote.Remoting] Remoting started; listening on addresses :[akka.tcp://RemoteActorSystem@10.150.20.159:2553]
[INFO] [01/31/2017 12:31:30.255] [main] [akka.remote.Remoting] Remoting now listens on addresses: [akka.tcp://RemoteActorSystem@10.150.20.159:2553]
12:31:30.272 [main] INFO de.itd.ui.Main$ - RemoteActorSystem started.
12:31:47.050 [RemoteActorSystem-akka.actor.default-dispatcher-2] INFO de.itd.actor.remote.DetectionGroupActor - Receiving initialization message...
12:31:54.308 [RemoteActorSystem-akka.actor.default-dispatcher-5] INFO de.itd.actor.remote.DetectionActor - Frame is available.
[WARN] [01/31/2017 12:32:06.285] [RemoteActorSystem-akka.remote.default-remote-dispatcher-7] [akka.tcp://RemoteActorSystem@10.150.20.159:2553/system/remote-watcher] Detected unreachable: [akka.tcp://MainActorSystem@10.150.80.177:2552]
[WARN] [01/31/2017 12:32:06.291] [RemoteActorSystem-akka.remote.default-remote-dispatcher-6] [akka.remote.Remoting] Association to [akka.tcp://MainActorSystem@10.150.80.177:2552] having UID [-946314302] is irrecoverably failed. UID is now quarantined and all messages to this UID will be delivered to dead letters. Remote actorsystem must be restarted to recover from this situation.
[INFO] [01/31/2017 12:32:06.365] [RemoteActorSystem-akka.actor.default-dispatcher-2] [akka://RemoteActorSystem/system/transports/akkaprotocolmanager.tcp0/akkaProtocol-tcp%3A%2F%2FMainActorSystem%4010.150.80.177%3A2552-2] Message [akka.remote.transport.AssociationHandle$InboundPayload] from Actor[akka://RemoteActorSystem/deadLetters] to Actor[akka://RemoteActorSystem/system/transports/akkaprotocolmanager.tcp0/akkaProtocol-tcp%3A%2F%2FMainActorSystem%4010.150.80.177%3A2552-2#-1039432132] was not delivered. [1] dead letters encountered. This logging can be turned off or adjusted with configuration settings 'akka.log-dead-letters' and 'akka.log-dead-letters-during-shutdown'.
[WARN] [01/31/2017 12:32:06.367] [RemoteActorSystem-akka.remote.default-remote-dispatcher-6] [akka.tcp://RemoteActorSystem@10.150.20.159:2553/system/endpointManager/reliableEndpointWriter-akka.tcp%3A%2F%2FMainActorSystem%4010.150.80.177%3A2552-1/endpointWriter] AssociationError [akka.tcp://RemoteActorSystem@10.150.20.159:2553] -> [akka.tcp://MainActorSystem@10.150.80.177:2552]: Error [Invalid address: akka.tcp://MainActorSystem@10.150.80.177:2552] [
akka.remote.InvalidAssociation: Invalid address: akka.tcp://MainActorSystem@10.150.80.177:2552
Caused by: akka.remote.transport.Transport$InvalidAssociationException: The remote system has a UID that has been quarantined. Association aborted.
]
[WARN] [01/31/2017 12:32:06.371] [RemoteActorSystem-akka.remote.default-remote-dispatcher-6] [akka.remote.Remoting] Tried to associate with unreachable remote address [akka.tcp://MainActorSystem@10.150.80.177:2552]. Address is now gated for 5000 ms, all messages to this address will be delivered to dead letters. Reason: [The remote system has a UID that has been quarantined. Association aborted.]
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1 回答 1

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不幸的是，我无法再重现该问题。经过一些试验和错误，它工作得很好......到目前为止，我只能疯狂猜测发生了什么变化。

我附上了当前的代码片段以供将来参考。请注意，与原始帖子相比，此版本序列化case class Frame(videoPos: Double, frame: Mat).

配置

akka {
  extensions = ["com.romix.akka.serialization.kryo.KryoSerializationExtension$"]
  actor {
    provider = remote
    warn-about-java-serializer-usage = no
    enable-additional-serialization-bindings = on
    serializers {
      kryo = "com.romix.akka.serialization.kryo.KryoSerializer"
    }
    serialization-bindings {
      "de.itd.actor.common.Message$Frame" = kryo
    }
    kryo  {
      kryo-custom-serializer-init = "de.itd.util.KryoInit"
      type = "nograph"
      idstrategy = "explicit"
      buffer-size = 4096
      max-buffer-size = -1
      use-manifests = true
      use-unsafe = false
      post-serialization-transformations = "lz4"
      kryo-trace = true
      resolve-subclasses = false
    }
  }
}

KryoInit

class KryoInit {
  def customize(kryo: Kryo): Unit  = {
    kryo.addDefaultSerializer(classOf[Frame], classOf[FrameKryoSerializer])
    kryo.register(classOf[Frame], 20)
  }
}

KryoSerializer

class FrameKryoSerializer extends Serializer[Frame] {
  override def write(kryo: Kryo, output: Output, frame: Frame): Unit = {
    output.writeDouble(frame.videoPos)
    val m: Mat = frame.frame
    val rows = m.rows()
    val cols = m.cols()
    val channels = m.channels()
    val matType = m.`type`()
    output.writeInt(rows)
    output.writeInt(cols)
    output.writeInt(channels)
    output.writeInt(matType)

    val bufferSize: Int = rows * cols * channels
    val arrayByte: Array[Byte] = new Array[Byte](bufferSize)
    m.get(0, 0, arrayByte)
    output.write(arrayByte)
  }

  override def read(kryo: Kryo, input: Input, `type`: Class[Frame]): Frame = {
    val videoFramePos = input.readDouble()

    val rows = input.readInt()
    val cols = input.readInt()
    val channels = input.readInt()
    val matType = input.readInt()

    val bufferSize = rows * cols * channels
    val arrayByte: Array[Byte] = new Array[Byte](bufferSize)
    val frame = new Mat(rows, cols , matType)
    input.readBytes(arrayByte)
    frame.put(0, 0, arrayByte)

    Frame(videoFramePos, frame)
  }
}
于 2017-02-02T07:24:26.463 回答