/*
* Copyright (C) 2011 the original author or authors.
* See the notice.md file distributed with this work for additional
* information regarding copyright ownership.
*
* Licensed 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.iq80.leveldb.impl;
import com.google.common.collect.ImmutableList;
import org.iq80.leveldb.util.Closeables;
import org.iq80.leveldb.util.Slice;
import org.iq80.leveldb.util.SliceOutput;
import org.iq80.leveldb.util.Slices;
import org.testng.annotations.AfterMethod;
import org.testng.annotations.BeforeMethod;
import org.testng.annotations.Test;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.nio.channels.FileChannel;
import java.util.List;
import static com.google.common.base.Charsets.UTF_8;
import static java.util.Arrays.asList;
import static org.testng.Assert.assertEquals;
import static org.testng.Assert.assertNull;
import static org.testng.FileAssert.fail;
public class LogTest
{
private static final LogMonitor NO_CORRUPTION_MONITOR = new LogMonitor()
{
@Override
public void corruption(long bytes, String reason)
{
fail(String.format("corruption of %s bytes: %s", bytes, reason));
}
@Override
public void corruption(long bytes, Throwable reason)
{
throw new RuntimeException(String.format("corruption of %s bytes: %s", bytes, reason), reason);
}
};
private LogWriter writer;
@Test
public void testEmptyBlock()
throws Exception
{
testLog();
}
@Test
public void testSmallRecord()
throws Exception
{
testLog(toSlice("dain sundstrom"));
}
@Test
public void testMultipleSmallRecords()
throws Exception
{
List<Slice> records = asList(
toSlice("Lagunitas Little Sumpin’ Sumpin’"),
toSlice("Lagunitas IPA"),
toSlice("Lagunitas Imperial Stout"),
toSlice("Oban 14"),
toSlice("Highland Park"),
toSlice("Lagavulin"));
testLog(records);
}
@Test
public void testLargeRecord()
throws Exception
{
testLog(toSlice("dain sundstrom", 4000));
}
@Test
public void testMultipleLargeRecords()
throws Exception
{
List<Slice> records = asList(
toSlice("Lagunitas Little Sumpin’ Sumpin’", 4000),
toSlice("Lagunitas IPA", 4000),
toSlice("Lagunitas Imperial Stout", 4000),
toSlice("Oban 14", 4000),
toSlice("Highland Park", 4000),
toSlice("Lagavulin", 4000));
testLog(records);
}
@Test
public void testReadWithoutProperClose()
throws Exception
{
testLog(ImmutableList.of(toSlice("something"), toSlice("something else")), false);
}
private void testLog(Slice... entries)
throws IOException
{
testLog(asList(entries));
}
private void testLog(List<Slice> records)
throws IOException
{
testLog(records, true);
}
private void testLog(List<Slice> records, boolean closeWriter)
throws IOException
{
for (Slice entry : records) {
writer.addRecord(entry, false);
}
if (closeWriter) {
writer.close();
}
// test readRecord
FileChannel fileChannel = new FileInputStream(writer.getFile()).getChannel();
try {
LogReader reader = new LogReader(fileChannel, NO_CORRUPTION_MONITOR, true, 0);
for (Slice expected : records) {
Slice actual = reader.readRecord();
assertEquals(actual, expected);
}
assertNull(reader.readRecord());
}
finally {
Closeables.closeQuietly(fileChannel);
}
}
@BeforeMethod
public void setUp()
throws Exception
{
writer = Logs.createLogWriter(File.createTempFile("table", ".log"), 42);
}
@AfterMethod
public void tearDown()
throws Exception
{
if (writer != null) {
writer.delete();
}
}
static Slice toSlice(String value)
{
return toSlice(value, 1);
}
static Slice toSlice(String value, int times)
{
byte[] bytes = value.getBytes(UTF_8);
Slice slice = Slices.allocate(bytes.length * times);
SliceOutput sliceOutput = slice.output();
for (int i = 0; i < times; i++) {
sliceOutput.writeBytes(bytes);
}
return slice;
}
}