/*
* Copyright 2009 Red Hat, Inc.
* Red Hat 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.hornetq.tests.unit.core.persistence.impl;
import java.io.File;
import java.util.ArrayList;
import junit.framework.Assert;
import org.hornetq.api.core.HornetQBuffer;
import org.hornetq.api.core.HornetQBuffers;
import org.hornetq.core.journal.Journal;
import org.hornetq.core.journal.PreparedTransactionInfo;
import org.hornetq.core.journal.RecordInfo;
import org.hornetq.core.journal.impl.JournalImpl;
import org.hornetq.core.journal.impl.NIOSequentialFileFactory;
import org.hornetq.core.persistence.impl.journal.BatchingIDGenerator;
import org.hornetq.core.persistence.impl.journal.JournalStorageManager;
import org.hornetq.tests.util.UnitTestCase;
/**
* A BatchIDGeneratorUnitTest
*
* @author <mailto:clebert.suconic@jboss.org">Clebert Suconic</a>
*
*
*/
public class BatchIDGeneratorUnitTest extends UnitTestCase
{
// Constants -----------------------------------------------------
// Attributes ----------------------------------------------------
// Static --------------------------------------------------------
// Constructors --------------------------------------------------
// Public --------------------------------------------------------
public void testSequence() throws Exception
{
NIOSequentialFileFactory factory = new NIOSequentialFileFactory(getTestDir());
Journal journal = new JournalImpl(10 * 1024, 2, 0, 0, factory, "test-data", "tst", 1);
journal.start();
journal.load(new ArrayList<RecordInfo>(), new ArrayList<PreparedTransactionInfo>(), null);
BatchingIDGenerator batch = new BatchingIDGenerator(0, 1000, journal);
long id1 = batch.generateID();
long id2 = batch.generateID();
Assert.assertTrue(id2 > id1);
journal.stop();
batch = new BatchingIDGenerator(0, 1000, journal);
loadIDs(journal, batch);
long id3 = batch.generateID();
Assert.assertEquals(1000, id3);
long id4 = batch.generateID();
Assert.assertTrue(id4 > id3 && id4 < 2000);
batch.close();
journal.stop();
batch = new BatchingIDGenerator(0, 1000, journal);
loadIDs(journal, batch);
long id5 = batch.generateID();
Assert.assertTrue(id5 > id4 && id5 < 2000);
long lastId = id5;
boolean close = true;
for (int i = 0; i < 100000; i++)
{
if (i % 1000 == 0)
{
System.out.println("lastId = " + lastId);
// interchanging closes and simulated crashes
if (close)
{
batch.close();
}
close = !close;
journal.stop();
batch = new BatchingIDGenerator(0, 1000, journal);
loadIDs(journal, batch);
}
long id = batch.generateID();
Assert.assertTrue(id > lastId);
lastId = id;
}
batch.close();
journal.stop();
batch = new BatchingIDGenerator(0, 1000, journal);
loadIDs(journal, batch);
lastId = batch.getCurrentID();
journal.stop();
batch = new BatchingIDGenerator(0, 1000, journal);
loadIDs(journal, batch);
Assert.assertEquals("No Ids were generated, so the currentID was supposed to stay the same",
lastId,
batch.getCurrentID());
journal.stop();
}
protected void loadIDs(final Journal journal, final BatchingIDGenerator batch) throws Exception
{
ArrayList<RecordInfo> records = new ArrayList<RecordInfo>();
ArrayList<PreparedTransactionInfo> tx = new ArrayList<PreparedTransactionInfo>();
journal.start();
journal.load(records, tx, null);
Assert.assertEquals(0, tx.size());
Assert.assertTrue(records.size() > 0);
for (RecordInfo record : records)
{
if (record.userRecordType == JournalStorageManager.ID_COUNTER_RECORD)
{
HornetQBuffer buffer = HornetQBuffers.wrappedBuffer(record.data);
batch.loadState(record.id, buffer);
}
}
}
// Package protected ---------------------------------------------
// Protected -----------------------------------------------------
@Override
protected void setUp() throws Exception
{
super.setUp();
File file = new File(getTestDir());
deleteDirectory(file);
file.mkdir();
}
@Override
protected void tearDown() throws Exception
{
super.tearDown();
}
// Private -------------------------------------------------------
// Inner classes -------------------------------------------------
}