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// Copyright Vespa.ai. 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.io.IOUtils;
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 java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.nio.ByteBuffer;
import java.nio.file.Files;
import static com.yahoo.vespa.filedistribution.FileReferenceData.CompressionType;
import static com.yahoo.vespa.filedistribution.FileReferenceData.CompressionType.gzip;
import static com.yahoo.vespa.filedistribution.FileReferenceData.CompressionType.lz4;
import static com.yahoo.vespa.filedistribution.FileReferenceData.CompressionType.zstd;
import static com.yahoo.vespa.filedistribution.FileReferenceData.Type.compressed;
import static com.yahoo.vespa.filedistribution.FileReferenceData.Type.file;
import static org.junit.Assert.assertEquals;
public class FileReceiverTest {
private File root;
private final XXHash64 hasher = XXHashFactory.fastestInstance().hash64();
@Rule
public TemporaryFolder temporaryFolder = new TemporaryFolder();
@Before
public void setup() throws IOException {
root = temporaryFolder.newFolder("root");
}
@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);
}
@Test
public void receiveCompressedParts() throws IOException{
File dirWithFiles = temporaryFolder.newFolder("files");
FileWriter writerA = new FileWriter(new File(dirWithFiles, "a"));
writerA.write("1");
writerA.close();
FileWriter writerB = new FileWriter(new File(dirWithFiles, "b"));
writerB.write("2");
writerB.close();
testWithCompression(dirWithFiles, gzip);
testWithCompression(dirWithFiles, lz4);
testWithCompression(dirWithFiles, zstd);
}
private void testWithCompression(File dirWithFiles, CompressionType compressionType) throws IOException {
File tempFile = temporaryFolder.newFile();
File file = new FileReferenceCompressor(compressed, compressionType).compress(dirWithFiles, tempFile);
transferCompressedData(compressionType, new FileReference("ref"), "a", IOUtils.readFileBytes(file));
File downloadDir = new File(root, "ref");
assertEquals("1", IOUtils.readFile(new File(downloadDir, "a")));
assertEquals("2", IOUtils.readFile(new File(downloadDir, "b")));
}
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, 1, ref, file, gzip, 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));
}
private void transferCompressedData(CompressionType compressionType, FileReference ref, String fileName, byte[] data) {
FileReceiver.Session session = new FileReceiver.Session(root, 1, ref, compressed, compressionType, fileName, data.length);
session.addPart(0, data);
session.close(hasher.hash(ByteBuffer.wrap(data), 0));
}
}
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