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* this work for additional information regarding copyright ownership.
* The ASF 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
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* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
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package org.apache.activemq.artemis.tests.unit.core.persistence.impl;
import java.io.File;
import java.util.ArrayList;
import org.apache.activemq.artemis.api.core.ActiveMQBuffer;
import org.apache.activemq.artemis.api.core.ActiveMQBuffers;
import org.apache.activemq.artemis.core.io.nio.NIOSequentialFileFactory;
import org.apache.activemq.artemis.core.journal.Journal;
import org.apache.activemq.artemis.core.journal.PreparedTransactionInfo;
import org.apache.activemq.artemis.core.journal.RecordInfo;
import org.apache.activemq.artemis.core.journal.impl.JournalImpl;
import org.apache.activemq.artemis.core.persistence.StorageManager;
import org.apache.activemq.artemis.core.persistence.impl.journal.BatchingIDGenerator;
import org.apache.activemq.artemis.core.persistence.impl.journal.JournalRecordIds;
import org.apache.activemq.artemis.core.persistence.impl.nullpm.NullStorageManager;
import org.apache.activemq.artemis.tests.util.ActiveMQTestBase;
import org.junit.Assert;
import org.junit.Test;
public class BatchIDGeneratorUnitTest extends ActiveMQTestBase {
@Test
public void testSequence() throws Exception {
NIOSequentialFileFactory factory = new NIOSequentialFileFactory(new File(getTestDir()), 1);
Journal journal = new JournalImpl(10 * 1024, 2, 2, 0, 0, factory, "activemq-bindings", "bindings", 1);
journal.start();
journal.load(new ArrayList<RecordInfo>(), new ArrayList<PreparedTransactionInfo>(), null);
BatchingIDGenerator batch = new BatchingIDGenerator(0, 1000, getJournalStorageManager(journal));
long id1 = batch.generateID();
long id2 = batch.generateID();
Assert.assertTrue(id2 > id1);
journal.stop();
batch = new BatchingIDGenerator(0, 1000, getJournalStorageManager(journal));
loadIDs(journal, batch);
long id3 = batch.generateID();
Assert.assertEquals(1001, id3);
long id4 = batch.generateID();
Assert.assertTrue(id4 > id3 && id4 < 2000);
batch.persistCurrentID();
journal.stop();
batch = new BatchingIDGenerator(0, 1000, getJournalStorageManager(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) {
// interchanging closes and simulated crashes
if (close) {
batch.persistCurrentID();
}
close = !close;
journal.stop();
batch = new BatchingIDGenerator(0, 1000, getJournalStorageManager(journal));
loadIDs(journal, batch);
}
long id = batch.generateID();
Assert.assertTrue(id > lastId);
lastId = id;
}
batch.persistCurrentID();
journal.stop();
batch = new BatchingIDGenerator(0, 1000, getJournalStorageManager(journal));
loadIDs(journal, batch);
lastId = batch.getCurrentID();
journal.stop();
batch = new BatchingIDGenerator(0, 1000, getJournalStorageManager(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<>();
ArrayList<PreparedTransactionInfo> tx = new ArrayList<>();
journal.start();
journal.load(records, tx, null);
Assert.assertEquals(0, tx.size());
Assert.assertTrue("Contains " + records.size(), records.size() > 0);
for (RecordInfo record : records) {
if (record.userRecordType == JournalRecordIds.ID_COUNTER_RECORD) {
ActiveMQBuffer buffer = ActiveMQBuffers.wrappedBuffer(record.data);
batch.loadState(record.id, buffer);
}
}
}
private StorageManager getJournalStorageManager(final Journal bindingsJournal) {
NullStorageManager storageManager = new NullStorageManager() {
@Override
public synchronized void storeID(long journalID, long id) throws Exception {
bindingsJournal.appendAddRecord(journalID, JournalRecordIds.ID_COUNTER_RECORD, BatchingIDGenerator.createIDEncodingSupport(id), true);
}
};
try {
storageManager.start();
} catch (Throwable ignored) {
}
return storageManager;
}
}