org.apache.flink.runtime.akka.serialization.WritableSerializer.scala Maven / Gradle / Ivy
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* Licensed to the Apache Software Foundation (ASF) under one
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* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
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package org.apache.flink.runtime.akka.serialization
import akka.serialization.JSerializer
import org.apache.flink.runtime.util.{DataInputDeserializer, DataOutputSerializer}
import org.apache.flink.util.InstantiationUtil
import org.apache.hadoop.io.Writable
class WritableSerializer extends JSerializer {
val INITIAL_BUFFER_SIZE = 256
override protected def fromBinaryJava(bytes: Array[Byte], manifest: Class[_]): AnyRef = {
val in = new DataInputDeserializer(bytes, 0, bytes.length)
val instance = InstantiationUtil.instantiate(manifest)
if(!instance.isInstanceOf[Writable]){
throw new RuntimeException(s"Class $manifest is not of type Writable.")
}
val writable = instance.asInstanceOf[Writable]
writable.readFields(in)
writable
}
override def includeManifest: Boolean = true
override def toBinary(o: AnyRef): Array[Byte] = {
if(!o.isInstanceOf[Writable]){
throw new RuntimeException("Object is not of type Writable.")
}
val writable = o.asInstanceOf[Writable]
val out = new DataOutputSerializer(INITIAL_BUFFER_SIZE)
writable.write(out)
out.wrapAsByteBuffer().array()
}
override def identifier: Int = 1337
}