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package spark.network
import java.nio.ByteBuffer
import java.net.InetSocketAddress
import scala.collection.mutable.ArrayBuffer
private[spark] abstract class Message(val typ: Long, val id: Int) {
var senderAddress: InetSocketAddress = null
var started = false
var startTime = -1L
var finishTime = -1L
def size: Int
def getChunkForSending(maxChunkSize: Int): Option[MessageChunk]
def getChunkForReceiving(chunkSize: Int): Option[MessageChunk]
def timeTaken(): String = (finishTime - startTime).toString + " ms"
override def toString = this.getClass.getSimpleName + "(id = " + id + ", size = " + size + ")"
}
private[spark] object Message {
val BUFFER_MESSAGE = 1111111111L
var lastId = 1
def getNewId() = synchronized {
lastId += 1
if (lastId == 0) {
lastId += 1
}
lastId
}
def createBufferMessage(dataBuffers: Seq[ByteBuffer], ackId: Int): BufferMessage = {
if (dataBuffers == null) {
return new BufferMessage(getNewId(), new ArrayBuffer[ByteBuffer], ackId)
}
if (dataBuffers.exists(_ == null)) {
throw new Exception("Attempting to create buffer message with null buffer")
}
return new BufferMessage(getNewId(), new ArrayBuffer[ByteBuffer] ++= dataBuffers, ackId)
}
def createBufferMessage(dataBuffers: Seq[ByteBuffer]): BufferMessage =
createBufferMessage(dataBuffers, 0)
def createBufferMessage(dataBuffer: ByteBuffer, ackId: Int): BufferMessage = {
if (dataBuffer == null) {
return createBufferMessage(Array(ByteBuffer.allocate(0)), ackId)
} else {
return createBufferMessage(Array(dataBuffer), ackId)
}
}
def createBufferMessage(dataBuffer: ByteBuffer): BufferMessage =
createBufferMessage(dataBuffer, 0)
def createBufferMessage(ackId: Int): BufferMessage = {
createBufferMessage(new Array[ByteBuffer](0), ackId)
}
def create(header: MessageChunkHeader): Message = {
val newMessage: Message = header.typ match {
case BUFFER_MESSAGE => new BufferMessage(header.id,
ArrayBuffer(ByteBuffer.allocate(header.totalSize)), header.other)
}
newMessage.senderAddress = header.address
newMessage
}
}
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