package org.infinispan.lucene;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.IOException;
import java.util.Arrays;
import java.util.HashSet;
import java.util.Random;
import java.util.Set;
import org.apache.lucene.store.Directory;
import org.apache.lucene.store.IOContext;
import org.apache.lucene.store.IndexInput;
import org.apache.lucene.store.IndexOutput;
import org.apache.lucene.store.RAMDirectory;
import org.infinispan.Cache;
import org.infinispan.lucene.directory.DirectoryBuilder;
import org.infinispan.lucene.impl.DirectoryBuilderImpl;
import org.infinispan.lucene.impl.DirectoryExtensions;
import org.infinispan.lucene.testutils.RepeatableLongByteSequence;
import org.infinispan.manager.CacheContainer;
import org.infinispan.test.TestingUtil;
import org.testng.AssertJUnit;
import org.testng.annotations.AfterMethod;
import org.testng.annotations.AfterTest;
import org.testng.annotations.BeforeTest;
import org.testng.annotations.Test;
/**
* @author Lukasz Moren
* @author Davide Di Somma
* @author Sanne Grinovero
*/
@SuppressWarnings("unchecked")
@Test(groups = "functional", testName = "lucene.InfinispanDirectoryIOTest", sequential = true)
public class InfinispanDirectoryIOTest {
/** The Test index name */
private static final String INDEXNAME = "index";
private CacheContainer cacheManager;
private File indexDir = new File(new File("."), INDEXNAME);
@BeforeTest
public void prepareCacheManager() {
cacheManager = CacheTestSupport.createTestCacheManager();
}
@AfterTest
public void killCacheManager() {
TestingUtil.killCacheManagers(cacheManager);
}
@AfterMethod
public void clearCache() {
cacheManager.getCache().clear();
TestingUtil.recursiveFileRemove(indexDir);
}
@Test
public void testWriteUsingSeekMethod() throws IOException {
final int BUFFER_SIZE = 64;
Cache cache = cacheManager.getCache();
Directory dir = DirectoryBuilder.newDirectoryInstance(cache, cache, cache, INDEXNAME).chunkSize(BUFFER_SIZE).create();
String fileName = "SomeText.txt";
IndexOutput io = dir.createOutput(fileName, IOContext.DEFAULT);
RepeatableLongByteSequence bytesGenerator = new RepeatableLongByteSequence();
//It writes repeatable text
final int REPEATABLE_BUFFER_SIZE = 1501;
for (int i = 0; i < REPEATABLE_BUFFER_SIZE; i++) {
io.writeByte(bytesGenerator.nextByte());
}
io.flush();
assert io.length() == REPEATABLE_BUFFER_SIZE;
//Text to write on file with repeatable text
final String someText = "This is some text";
final byte[] someTextAsBytes = someText.getBytes();
//4 points in random order where writing someText: at begin of file, at end of file, within a single chunk,
//between 2 chunks
final int[] pointers = {0, 635, REPEATABLE_BUFFER_SIZE, 135};
for(int i=0; i < pointers.length; i++) {
io.seek(pointers[i]);
io.writeBytes(someTextAsBytes, someTextAsBytes.length);
}
io.close();
bytesGenerator.reset();
final long finalSize = REPEATABLE_BUFFER_SIZE + someTextAsBytes.length;
assert io.length() == finalSize;
assert io.length() == DirectoryIntegrityCheck.deepCountFileSize(new FileCacheKey(INDEXNAME,fileName), cache);
int indexPointer = 0;
Arrays.sort(pointers);
byte[] buffer = null;
int chunkIndex = -1;
//now testing the stream is equal to the produced repeatable but including the edits at pointed positions
for (int i = 0; i < REPEATABLE_BUFFER_SIZE + someTextAsBytes.length; i++) {
if (i % BUFFER_SIZE == 0) {
buffer = (byte[]) cache.get(new ChunkCacheKey(INDEXNAME, fileName, ++chunkIndex, BUFFER_SIZE));
}
byte predictableByte = bytesGenerator.nextByte();
if (i < pointers[indexPointer]) {
//Assert predictable text
AssertJUnit.assertEquals(predictableByte, buffer[i % BUFFER_SIZE]);
} else if (pointers[indexPointer] <= i && i < pointers[indexPointer] + someTextAsBytes.length) {
//Assert someText
AssertJUnit.assertEquals(someTextAsBytes[i - pointers[indexPointer]], buffer[i % BUFFER_SIZE]);
}
if (i == pointers[indexPointer] + someTextAsBytes.length) {
//Change pointer
indexPointer++;
}
}
dir.close();
DirectoryIntegrityCheck.verifyDirectoryStructure(cache, INDEXNAME);
}
@Test (enabled = false, description = "https://issues.jboss.org/browse/ISPN-2895")
public void testReadWholeFile() throws IOException {
final int BUFFER_SIZE = 64;
Cache cache = cacheManager.getCache();
Directory dir = DirectoryBuilder.newDirectoryInstance(cache, cache, cache, INDEXNAME).chunkSize(BUFFER_SIZE).create();
verifyOnBuffer("SingleChunk.txt", 61, BUFFER_SIZE, cache, dir, 15);
final int VERY_BIG_FILE_SIZE = 10000;
assert BUFFER_SIZE < VERY_BIG_FILE_SIZE;
verifyOnBuffer("MultipleChunks.txt", VERY_BIG_FILE_SIZE, BUFFER_SIZE, cache, dir, 33);
final int LAST_CHUNK_COMPLETELY_FILLED_FILE_SIZE = 256;
assert (LAST_CHUNK_COMPLETELY_FILLED_FILE_SIZE % BUFFER_SIZE) == 0;
verifyOnBuffer("LastChunkFilled.txt", LAST_CHUNK_COMPLETELY_FILLED_FILE_SIZE, BUFFER_SIZE, cache, dir, 11);
assertHasNChunks(4, cache, INDEXNAME, "LastChunkFilled.txt.bak", BUFFER_SIZE);
DirectoryIntegrityCheck.verifyDirectoryStructure(cache, INDEXNAME);
final int LAST_CHUNK_WITH_LONELY_BYTE_FILE_SIZE = 257;
assert (LAST_CHUNK_WITH_LONELY_BYTE_FILE_SIZE % BUFFER_SIZE) == 1;
verifyOnBuffer("LonelyByteInLastChunk.txt", LAST_CHUNK_WITH_LONELY_BYTE_FILE_SIZE, BUFFER_SIZE, cache, dir, 12);
assertHasNChunks(5, cache, INDEXNAME, "LonelyByteInLastChunk.txt.bak", BUFFER_SIZE);
dir.close();
DirectoryIntegrityCheck.verifyDirectoryStructure(cache, INDEXNAME);
}
/**
* Helper for testReadWholeFile test:
* creates a file and then verifies it's readability in specific corner cases.
* Then reuses the same parameters to verify the file rename capabilities.
*/
private void verifyOnBuffer(final String fileName, final int fileSize, final int bufferSize, Cache cache, Directory dir, final int readBuffer) throws IOException {
createFileWithRepeatableContent(dir, fileName, fileSize);
assertReadByteWorkingCorrectly(dir, fileName, fileSize);
assertReadBytesWorkingCorrectly(dir, fileName, fileSize, readBuffer);
DirectoryIntegrityCheck.verifyDirectoryStructure(cache, INDEXNAME);
final String newFileName = fileName+".bak";
((DirectoryExtensions)dir).renameFile(fileName, newFileName);
assertReadByteWorkingCorrectly(dir, newFileName, fileSize);
assertReadBytesWorkingCorrectly(dir, newFileName, fileSize, readBuffer);
DirectoryIntegrityCheck.verifyDirectoryStructure(cache, INDEXNAME);
assert dir.fileExists(newFileName);
assert dir.fileExists(fileName) == false;
}
@Test
public void testReadRandomSampleFile() throws IOException {
final int BUFFER_SIZE = 64;
Cache cache = cacheManager.getCache();
Directory dir = DirectoryBuilder.newDirectoryInstance(cache, cache, cache, INDEXNAME).chunkSize(BUFFER_SIZE).create();
final int FILE_SIZE = 1000;
assert BUFFER_SIZE < FILE_SIZE;
createFileWithRepeatableContent(dir, "RandomSampleFile.txt", FILE_SIZE);
IndexInput indexInput = dir.openInput("RandomSampleFile.txt", IOContext.DEFAULT);
assert indexInput.length() == FILE_SIZE;
RepeatableLongByteSequence bytesGenerator = new RepeatableLongByteSequence();
Random r = new Random();
long seekPoint = 0;
// Now it reads some random byte and it compares to the expected byte
for (int i = 0; i < FILE_SIZE; i++) {
if (seekPoint == i) {
byte expectedByte = bytesGenerator.nextByte();
byte actualByte = indexInput.readByte();
assert expectedByte == actualByte;
seekPoint = indexInput.getFilePointer() + r.nextInt(10);
indexInput.seek(seekPoint);
} else {
bytesGenerator.nextByte();
}
}
indexInput.close();
dir.close();
DirectoryIntegrityCheck.verifyDirectoryStructure(cache, INDEXNAME);
}
/**
* Used to verify that IndexInput.readBytes method reads correctly the whole file content comparing the
* result with the expected sequence of bytes
*
* @param dir
* The Directory containing the file to verify
* @param fileName
* The file name to read
* @param contentFileSizeExpected
* The size content file expected
* @param arrayLengthToRead
* The length of byte array to read
* @throws IOException
*/
private void assertReadBytesWorkingCorrectly(Directory dir, String fileName,
final int contentFileSizeExpected, final int arrayLengthToRead) throws IOException {
IndexInput indexInput = dir.openInput(fileName, IOContext.DEFAULT);
AssertJUnit.assertEquals(contentFileSizeExpected, indexInput.length());
RepeatableLongByteSequence bytesGenerator = new RepeatableLongByteSequence();
byte[] readBytes = new byte[arrayLengthToRead];
byte[] expectedBytes = new byte[arrayLengthToRead];
long toRead = contentFileSizeExpected;
while (toRead > 0) {
// the condition is satisfied when the file is close to the end
if (toRead < arrayLengthToRead) {
readBytes = new byte[(int) toRead];
expectedBytes = new byte[(int) toRead];
}
int nextBytesToRead = (int) Math.min(toRead, arrayLengthToRead);
bytesGenerator.nextBytes(expectedBytes);
indexInput.readBytes(readBytes, 0, nextBytesToRead);
assert Arrays.equals(expectedBytes, readBytes);
toRead = toRead - nextBytesToRead;
}
indexInput.close();
}
/**
* Used to verify that IndexInput.readByte method reads correctly the whole file content comparing the
* result with the expected sequence of bytes
*
* @param dir
* The Directory containing the file to verify
* @param fileName
* The file name to read
* @param contentFileSizeExpected
* The size content file expected
* @throws IOException
*/
private void assertReadByteWorkingCorrectly(Directory dir, String fileName,
final int contentFileSizeExpected) throws IOException {
IndexInput indexInput = dir.openInput(fileName, IOContext.DEFAULT);
AssertJUnit.assertEquals(contentFileSizeExpected, indexInput.length());
RepeatableLongByteSequence bytesGenerator = new RepeatableLongByteSequence();
for (int i = 0; i < contentFileSizeExpected; i++) {
AssertJUnit.assertEquals(bytesGenerator.nextByte(), indexInput.readByte());
}
indexInput.close();
}
/**
* Verifies a file is divided in N chunks
*/
private void assertHasNChunks(int expectedChunks, Cache cache, String index, String fileName, int bufferSize) {
int i=0;
for (; i<expectedChunks; i++) {
ChunkCacheKey key = new ChunkCacheKey(index, fileName, i, bufferSize);
AssertJUnit.assertTrue("should contain key " + key, cache.containsKey(key));
}
ChunkCacheKey key = new ChunkCacheKey(index, fileName, i, bufferSize);
AssertJUnit.assertFalse("should NOT contain key " + key, cache.containsKey(key));
}
/**
* It creates a file with fixed size using a RepeatableLongByteSequence object to generate a
* repeatable content
*
* @param dir
* The Directory containing the file to create
* @param fileName
* The file name to create
* @param contentFileSize
* The size content file to create
* @throws IOException
*/
private void createFileWithRepeatableContent(Directory dir, String fileName, final int contentFileSize) throws IOException {
IndexOutput indexOutput = dir.createOutput(fileName, IOContext.DEFAULT);
RepeatableLongByteSequence bytesGenerator = new RepeatableLongByteSequence();
for (int i = 0; i < contentFileSize; i++) {
indexOutput.writeByte(bytesGenerator.nextByte());
}
indexOutput.close();
}
@Test(enabled = false)
public void testReadChunks() throws Exception {
final int BUFFER_SIZE = 64;
Cache cache = cacheManager.getCache();
Directory dir = DirectoryBuilder.newDirectoryInstance(cache, cache, cache, INDEXNAME).chunkSize(BUFFER_SIZE).create();
// create file headers
FileMetadata file1 = new FileMetadata(5);
FileCacheKey key1 = new FileCacheKey(INDEXNAME, "Hello.txt");
cache.put(key1, file1);
FileMetadata file2 = new FileMetadata(5);
FileCacheKey key2 = new FileCacheKey(INDEXNAME, "World.txt");
cache.put(key2, file2);
// byte array for Hello.txt
String helloText = "Hello world. This is some text.";
cache.put(new ChunkCacheKey(INDEXNAME, "Hello.txt", 0, BUFFER_SIZE), helloText.getBytes());
// byte array for World.txt - should be in at least 2 chunks.
String worldText = "This String should contain more than sixty four characters but less than one hundred and twenty eight.";
assert worldText.getBytes().length > BUFFER_SIZE;
assert worldText.getBytes().length < (2 * BUFFER_SIZE);
byte[] buf = new byte[BUFFER_SIZE];
System.arraycopy(worldText.getBytes(), 0, buf, 0, BUFFER_SIZE);
cache.put(new ChunkCacheKey(INDEXNAME, "World.txt", 0, BUFFER_SIZE), buf);
String part1 = new String(buf);
buf = new byte[BUFFER_SIZE];
System.arraycopy(worldText.getBytes(), BUFFER_SIZE, buf, 0, worldText.length() - BUFFER_SIZE);
cache.put(new ChunkCacheKey(INDEXNAME, "World.txt", 1, BUFFER_SIZE), buf);
String part2 = new String(buf);
// make sure the generated bytes do add up!
AssertJUnit.assertEquals(part1 + part2.trim(), worldText);
file1.setSize(helloText.length());
file2.setSize(worldText.length());
Set<String> s = new HashSet<String>();
s.add("Hello.txt");
s.add("World.txt");
Set other = new HashSet(Arrays.asList(new String[0]));
// ok, file listing works.
AssertJUnit.assertEquals(s, other);
IndexInput ii = dir.openInput("Hello.txt", IOContext.DEFAULT);
assert ii.length() == helloText.length();
ByteArrayOutputStream baos = new ByteArrayOutputStream();
for (int i = 0; i < ii.length(); i++) {
baos.write(ii.readByte());
}
assert new String(baos.toByteArray()).equals(helloText);
ii = dir.openInput("World.txt", IOContext.DEFAULT);
assert ii.length() == worldText.length();
baos = new ByteArrayOutputStream();
for (int i = 0; i < ii.length(); i++) {
baos.write(ii.readByte());
}
assert new String(baos.toByteArray()).equals(worldText);
// now with buffered reading
ii = dir.openInput("Hello.txt", IOContext.DEFAULT);
assert ii.length() == helloText.length();
baos = new ByteArrayOutputStream();
long toRead = ii.length();
while (toRead > 0) {
buf = new byte[19]; // suitably arbitrary
int bytesRead = (int) Math.min(toRead, 19);
ii.readBytes(buf, 0, bytesRead);
toRead = toRead - bytesRead;
baos.write(buf, 0, bytesRead);
}
assert new String(baos.toByteArray()).equals(helloText);
ii = dir.openInput("World.txt", IOContext.DEFAULT);
assert ii.length() == worldText.length();
baos = new ByteArrayOutputStream();
toRead = ii.length();
while (toRead > 0) {
buf = new byte[19]; // suitably arbitrary
int bytesRead = (int) Math.min(toRead, 19);
ii.readBytes(buf, 0, bytesRead);
toRead = toRead - bytesRead;
baos.write(buf, 0, bytesRead);
}
assert new String(baos.toByteArray()).equals(worldText);
dir.deleteFile("Hello.txt");
assert null == cache.get(new FileCacheKey(INDEXNAME, "Hello.txt"));
assert null == cache.get(new ChunkCacheKey(INDEXNAME, "Hello.txt", 0, BUFFER_SIZE));
Object ob1 = cache.get(new FileCacheKey(INDEXNAME, "World.txt"));
Object ob2 = cache.get(new ChunkCacheKey(INDEXNAME, "World.txt", 0, BUFFER_SIZE));
Object ob3 = cache.get(new ChunkCacheKey(INDEXNAME, "World.txt", 1, BUFFER_SIZE));
((DirectoryExtensions)dir).renameFile("World.txt", "HelloWorld.txt");
assert null == cache.get(new FileCacheKey(INDEXNAME, "Hello.txt"));
assert null == cache.get(new ChunkCacheKey(INDEXNAME, "Hello.txt", 0, BUFFER_SIZE));
assert null == cache.get(new ChunkCacheKey(INDEXNAME, "Hello.txt", 1, BUFFER_SIZE));
assert cache.get(new FileCacheKey(INDEXNAME, "HelloWorld.txt")).equals(ob1);
assert cache.get(new ChunkCacheKey(INDEXNAME, "HelloWorld.txt", 0, BUFFER_SIZE)).equals(ob2);
assert cache.get(new ChunkCacheKey(INDEXNAME, "HelloWorld.txt", 1, BUFFER_SIZE)).equals(ob3);
// test that contents survives a move
ii = dir.openInput("HelloWorld.txt", IOContext.DEFAULT);
assert ii.length() == worldText.length();
baos = new ByteArrayOutputStream();
toRead = ii.length();
while (toRead > 0) {
buf = new byte[19]; // suitably arbitrary
int bytesRead = (int) Math.min(toRead, 19);
ii.readBytes(buf, 0, bytesRead);
toRead = toRead - bytesRead;
baos.write(buf, 0, bytesRead);
}
assert new String(baos.toByteArray()).equals(worldText);
dir.close();
DirectoryIntegrityCheck.verifyDirectoryStructure(cache, INDEXNAME);
}
public void testWriteChunks() throws Exception {
final int BUFFER_SIZE = 64;
Cache cache = cacheManager.getCache();
Directory dir = DirectoryBuilder.newDirectoryInstance(cache, cache, cache, INDEXNAME).chunkSize(BUFFER_SIZE).create();
IndexOutput io = dir.createOutput("MyNewFile.txt", IOContext.DEFAULT);
io.writeByte((byte) 66);
io.writeByte((byte) 69);
io.flush();
io.close();
assert dir.fileExists("MyNewFile.txt");
assert null != cache.get(new ChunkCacheKey(INDEXNAME, "MyNewFile.txt", 0, BUFFER_SIZE));
// test contents by reading:
byte[] buf = new byte[9];
IndexInput ii = dir.openInput("MyNewFile.txt", IOContext.DEFAULT);
ii.readBytes(buf, 0, (int) ii.length());
ii.close();
assert new String(new byte[] { 66, 69 }).equals(new String(buf).trim());
String testText = "This is some rubbish again that will span more than one chunk - one hopes. Who knows, maybe even three or four chunks.";
io = dir.createOutput("MyNewFile.txt", IOContext.DEFAULT);
io.seek(0);
io.writeBytes(testText.getBytes(), 0, testText.length());
io.close();
// now compare.
byte[] chunk1 = (byte[]) cache.get(new ChunkCacheKey(INDEXNAME, "MyNewFile.txt", 0, BUFFER_SIZE));
byte[] chunk2 = (byte[]) cache.get(new ChunkCacheKey(INDEXNAME, "MyNewFile.txt", 1, BUFFER_SIZE));
assert null != chunk1;
assert null != chunk2;
assert testText.equals(new String(chunk1) + new String(chunk2).trim());
dir.close();
DirectoryIntegrityCheck.verifyDirectoryStructure(cache, INDEXNAME);
}
@Test
public void testWriteChunksDefaultChunks() throws Exception {
Cache cache = cacheManager.getCache();
Directory dir = DirectoryBuilder.newDirectoryInstance(cache, cache, cache, INDEXNAME).create();
final String testText = "This is some rubbish";
final byte[] testTextAsBytes = testText.getBytes();
IndexOutput io = dir.createOutput("MyNewFile.txt", IOContext.DEFAULT);
io.writeByte((byte) 1);
io.writeByte((byte) 2);
io.writeByte((byte) 3);
io.writeBytes(testTextAsBytes, testTextAsBytes.length);
io.close();
DirectoryIntegrityCheck.verifyDirectoryStructure(cache, INDEXNAME);
FileCacheKey fileCacheKey = new FileCacheKey(INDEXNAME, "MyNewFile.txt");
assert null != cache.get(fileCacheKey);
FileMetadata metadata = (FileMetadata) cache.get(fileCacheKey);
AssertJUnit.assertEquals(testTextAsBytes.length + 3, metadata.getSize());
assert null != cache.get(new ChunkCacheKey(INDEXNAME, "MyNewFile.txt", 0, DirectoryBuilderImpl.DEFAULT_BUFFER_SIZE));
// test contents by reading:
IndexInput ii = dir.openInput("MyNewFile.txt", IOContext.DEFAULT);
assert ii.readByte() == 1;
assert ii.readByte() == 2;
assert ii.readByte() == 3;
byte[] buf = new byte[testTextAsBytes.length];
ii.readBytes(buf, 0, testTextAsBytes.length);
ii.close();
assert testText.equals(new String(buf).trim());
dir.close();
DirectoryIntegrityCheck.verifyDirectoryStructure(cache, INDEXNAME);
}
@Test
public void testChunkBordersOnInfinispan() throws IOException {
Cache cache = cacheManager.getCache();
cache.clear();
Directory dir = DirectoryBuilder.newDirectoryInstance(cache, cache, cache, INDEXNAME).chunkSize(13).create();
testChunkBorders(dir, cache);
cache.clear();
}
@Test
public void testChunkBordersOnRAMDirectory() throws IOException {
RAMDirectory dir = new RAMDirectory();
testChunkBorders(dir, null);
}
/**
* Useful to verify the Infinispan Directory has similar behaviour
* to standard Lucene implementations regarding reads out of ranges.
*/
private void testChunkBorders(Directory dir, Cache cache) throws IOException {
//numbers are chosen to be multiples of the chunksize set for the InfinispanDirectory
//so that we test the borders of it.
testOn(dir, 0 ,0, cache);
testOn(dir, 0 ,1, cache);
testOn(dir, 1 ,1, cache);
testOn(dir, 1 ,0, cache);
// all equal:
testOn(dir, 13 ,13, cache);
// one less:
testOn(dir, 12 ,13, cache);
testOn(dir, 13 ,12, cache);
testOn(dir, 12 ,12, cache);
// one higher
testOn(dir, 13 ,14, cache);
testOn(dir, 14 ,13, cache);
testOn(dir, 14 ,14, cache);
// now repeat in multi-chunk scenario:
// all equal:
testOn(dir, 39 ,39, cache);
// one less:
testOn(dir, 38 ,38, cache);
testOn(dir, 38 ,39, cache);
testOn(dir, 39 ,38, cache);
// one higher
testOn(dir, 40 ,40, cache);
testOn(dir, 40 ,39, cache);
testOn(dir, 39 ,40, cache);
// quite bigger
testOn(dir, 600, 600, cache);
}
private void testOn(Directory dir, int writeSize, int readSize, Cache cache) throws IOException {
if (cache != null) cache.clear();//needed to make sure no chunks are left over in case of Infinispan implementation
final String filename = "chunkTest";
IndexOutput indexOutput = dir.createOutput(filename, IOContext.DEFAULT);
byte[] toWrite = fillBytes(writeSize);
indexOutput.writeBytes(toWrite, writeSize);
indexOutput.close();
if (cache != null) {
AssertJUnit.assertEquals(writeSize, DirectoryIntegrityCheck.deepCountFileSize(new FileCacheKey(INDEXNAME,filename), cache));
}
AssertJUnit.assertEquals(writeSize, indexOutput.length());
byte[] results = new byte[readSize];
IndexInput openInput = dir.openInput(filename, IOContext.DEFAULT);
try {
openInput.readBytes(results, 0, readSize);
for (int i = 0; i < writeSize && i < readSize; i++) {
AssertJUnit.assertEquals(results[i], toWrite[i]);
}
if (readSize > writeSize)
AssertJUnit.fail("should have thrown an IOException for reading past EOF");
} catch (IOException ioe) {
if (readSize <= writeSize)
AssertJUnit.fail("should not have thrown an IOException" + ioe.getMessage());
}
}
public void multipleFlushTest() throws IOException {
final String filename = "longFile.writtenInMultipleFlushes";
final int bufferSize = 300;
Cache cache = cacheManager.getCache();
cache.clear();
Directory dir = DirectoryBuilder.newDirectoryInstance(cache, cache, cache, INDEXNAME).chunkSize(13).create();
byte[] manyBytes = fillBytes(bufferSize);
IndexOutput indexOutput = dir.createOutput(filename, IOContext.DEFAULT);
for (int i = 0; i < 10; i++) {
indexOutput.writeBytes(manyBytes, bufferSize);
indexOutput.flush();
}
indexOutput.close();
IndexInput input = dir.openInput(filename, IOContext.DEFAULT);
final int finalSize = (10 * bufferSize);
AssertJUnit.assertEquals(finalSize, input.length());
final byte[] resultingBuffer = new byte[finalSize];
input.readBytes(resultingBuffer, 0, finalSize);
int index = 0;
for (int i = 0; i < 10; i++) {
for (int j = 0; j < bufferSize; j++)
AssertJUnit.assertEquals(resultingBuffer[index++], manyBytes[j]);
}
}
private byte[] fillBytes(int size) {
byte[] b = new byte[size];
for (int i=0; i<size; i++) {
b[i]=(byte)i;
}
return b;
}
}