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/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file 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
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.spark.network.netty
import java.util.concurrent.Executors
import io.netty.buffer.ByteBuf
import io.netty.channel.ChannelHandlerContext
import io.netty.util.CharsetUtil
import org.apache.spark.{SparkContext, SparkConf, Logging}
import org.apache.spark.network.ConnectionManagerId
import scala.collection.JavaConverters._
import org.apache.spark.storage.BlockId
private[spark] class ShuffleCopier(conf: SparkConf) extends Logging {
def getBlock(host: String, port: Int, blockId: BlockId,
resultCollectCallback: (BlockId, Long, ByteBuf) => Unit) {
val handler = new ShuffleCopier.ShuffleClientHandler(resultCollectCallback)
val connectTimeout = conf.get("spark.shuffle.netty.connect.timeout", "60000").toInt
val fc = new FileClient(handler, connectTimeout)
try {
fc.init()
fc.connect(host, port)
fc.sendRequest(blockId.name)
fc.waitForClose()
fc.close()
} catch {
// Handle any socket-related exceptions in FileClient
case e: Exception => {
logError("Shuffle copy of block " + blockId + " from " + host + ":" + port + " failed", e)
handler.handleError(blockId)
}
}
}
def getBlock(cmId: ConnectionManagerId, blockId: BlockId,
resultCollectCallback: (BlockId, Long, ByteBuf) => Unit) {
getBlock(cmId.host, cmId.port, blockId, resultCollectCallback)
}
def getBlocks(cmId: ConnectionManagerId,
blocks: Seq[(BlockId, Long)],
resultCollectCallback: (BlockId, Long, ByteBuf) => Unit) {
for ((blockId, size) <- blocks) {
getBlock(cmId, blockId, resultCollectCallback)
}
}
}
private[spark] object ShuffleCopier extends Logging {
private class ShuffleClientHandler(resultCollectCallBack: (BlockId, Long, ByteBuf) => Unit)
extends FileClientHandler with Logging {
override def handle(ctx: ChannelHandlerContext, in: ByteBuf, header: FileHeader) {
logDebug("Received Block: " + header.blockId + " (" + header.fileLen + "B)")
resultCollectCallBack(header.blockId, header.fileLen.toLong, in.readBytes(header.fileLen))
}
override def handleError(blockId: BlockId) {
if (!isComplete) {
resultCollectCallBack(blockId, -1, null)
}
}
}
def echoResultCollectCallBack(blockId: BlockId, size: Long, content: ByteBuf) {
if (size != -1) {
logInfo("File: " + blockId + " content is : \" " + content.toString(CharsetUtil.UTF_8) + "\"")
}
}
def main(args: Array[String]) {
if (args.length < 3) {
System.err.println("Usage: ShuffleCopier <host> <port> <shuffle_block_id> <threads>")
System.exit(1)
}
val host = args(0)
val port = args(1).toInt
val blockId = BlockId(args(2))
val threads = if (args.length > 3) args(3).toInt else 10
val copiers = Executors.newFixedThreadPool(80)
val tasks = (for (i <- Range(0, threads)) yield {
Executors.callable(new Runnable() {
def run() {
val copier = new ShuffleCopier(new SparkConf)
copier.getBlock(host, port, blockId, echoResultCollectCallBack)
}
})
}).asJava
copiers.invokeAll(tasks)
copiers.shutdown()
System.exit(0)
}
}
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