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// Copyright 2018 Yahoo Holdings. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.vespa.filedistribution;
import com.yahoo.config.FileReference;
import com.yahoo.text.Utf8;
import net.jpountz.xxhash.XXHash64;
import net.jpountz.xxhash.XXHashFactory;
import org.junit.Before;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.TemporaryFolder;
import static org.junit.Assert.assertEquals;
import java.io.File;
import java.io.IOException;
import java.nio.ByteBuffer;
import java.nio.file.Files;
public class FileReceiverTest {
private File root;
private File tempDir;
private final XXHash64 hasher = XXHashFactory.fastestInstance().hash64();
@Rule
public TemporaryFolder temporaryFolder = new TemporaryFolder();
@Before
public void setup() throws IOException {
root = temporaryFolder.newFolder("root");
tempDir = temporaryFolder.newFolder("tmp");
}
@Test
public void receiveMultiPartFile() throws IOException{
String [] parts = new String[3];
parts[0] = "first part\n";
parts[1] = "second part\n";
parts[2] = "third part\n";
StringBuilder sb = new StringBuilder();
for (String s : parts) {
sb.append(s);
}
String all = sb.toString();
transferPartsAndAssert(new FileReference("ref-a"), "myfile-1", all, 1);
transferPartsAndAssert(new FileReference("ref-a"), "myfile-2", all, 2);
transferPartsAndAssert(new FileReference("ref-a"), "myfile-3", all, 3);
}
private void transferPartsAndAssert(FileReference ref, String fileName, String all, int numParts) throws IOException {
byte [] allContent = Utf8.toBytes(all);
FileReceiver.Session session = new FileReceiver.Session(root, tempDir, 1, ref,
FileReferenceData.Type.file, fileName, allContent.length);
int partSize = (allContent.length+(numParts-1))/numParts;
ByteBuffer bb = ByteBuffer.wrap(allContent);
for (int i = 0, pos = 0; i < numParts; i++) {
byte [] buf = new byte[Math.min(partSize, allContent.length - pos)];
bb.get(buf);
session.addPart(i, buf);
// Small numbers, so need a large delta
assertEquals((double)(i+1)/(double)numParts, session.percentageReceived(), 0.04);
pos += buf.length;
}
File file = session.close(hasher.hash(ByteBuffer.wrap(Utf8.toBytes(all)), 0));
byte [] allReadBytes = Files.readAllBytes(file.toPath());
file.delete();
assertEquals(all, Utf8.toString(allReadBytes));
}
}
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