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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.server
import java.io.{RandomAccessFile, File}
import java.nio.ByteBuffer
import io.netty.buffer.{Unpooled, ByteBuf}
import io.netty.channel.{ChannelHandlerContext, SimpleChannelInboundHandler, DefaultFileRegion}
import io.netty.channel.embedded.EmbeddedChannel
import org.scalatest.FunSuite
import org.apache.spark.storage.{BlockDataProvider, FileSegment}
class BlockServerHandlerSuite extends FunSuite {
test("ByteBuffer block") {
val expectedBlockId = "test_bytebuffer_block"
val buf = ByteBuffer.allocate(10000)
for (i <- 1 to 10000) {
buf.put(i.toByte)
}
buf.flip()
val channel = new EmbeddedChannel(new BlockServerHandler(new BlockDataProvider {
override def getBlockData(blockId: String): Either[FileSegment, ByteBuffer] = Right(buf)
}))
channel.writeInbound(expectedBlockId)
assert(channel.outboundMessages().size === 2)
val out1 = channel.readOutbound().asInstanceOf[BlockHeader]
val out2 = channel.readOutbound().asInstanceOf[ByteBuf]
assert(out1.blockId === expectedBlockId)
assert(out1.blockSize === buf.remaining)
assert(out1.error === None)
assert(out2.equals(Unpooled.wrappedBuffer(buf)))
channel.close()
}
test("FileSegment block via zero-copy") {
val expectedBlockId = "test_file_block"
// Create random file data
val fileContent = new Array[Byte](1024)
scala.util.Random.nextBytes(fileContent)
val testFile = File.createTempFile("netty-test-file", "txt")
val fp = new RandomAccessFile(testFile, "rw")
fp.write(fileContent)
fp.close()
val channel = new EmbeddedChannel(new BlockServerHandler(new BlockDataProvider {
override def getBlockData(blockId: String): Either[FileSegment, ByteBuffer] = {
Left(new FileSegment(testFile, 15, testFile.length - 25))
}
}))
channel.writeInbound(expectedBlockId)
assert(channel.outboundMessages().size === 2)
val out1 = channel.readOutbound().asInstanceOf[BlockHeader]
val out2 = channel.readOutbound().asInstanceOf[DefaultFileRegion]
assert(out1.blockId === expectedBlockId)
assert(out1.blockSize === testFile.length - 25)
assert(out1.error === None)
assert(out2.count === testFile.length - 25)
assert(out2.position === 15)
}
test("pipeline exception propagation") {
val blockServerHandler = new BlockServerHandler(new BlockDataProvider {
override def getBlockData(blockId: String): Either[FileSegment, ByteBuffer] = ???
})
val exceptionHandler = new SimpleChannelInboundHandler[String]() {
override def channelRead0(ctx: ChannelHandlerContext, msg: String): Unit = {
throw new Exception("this is an error")
}
}
val channel = new EmbeddedChannel(exceptionHandler, blockServerHandler)
assert(channel.isOpen)
channel.writeInbound("a message to trigger the error")
assert(!channel.isOpen)
}
}
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