/**
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* 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
*
* 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.apache.activemq.store.kahadb.plist;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;
import java.io.File;
import java.io.IOException;
import java.util.HashMap;
import java.util.Iterator;
import java.util.LinkedHashMap;
import java.util.Map;
import java.util.Vector;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.TimeUnit;
import org.apache.activemq.store.PList;
import org.apache.activemq.store.PList.PListIterator;
import org.apache.activemq.store.PListEntry;
import org.apache.activemq.util.ByteSequence;
import org.apache.activemq.util.IOHelper;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class PListTest {
static final Logger LOG = LoggerFactory.getLogger(PListTest.class);
private PListStoreImpl store;
private PListImpl plist;
final ByteSequence payload = new ByteSequence(new byte[400]);
final String idSeed = new String("Seed" + new byte[1024]);
final Vector<Throwable> exceptions = new Vector<Throwable>();
ExecutorService executor;
private PListEntry getFirst(PList plist) throws IOException {
PList.PListIterator iterator = plist.iterator();
try {
if (iterator.hasNext()) {
return iterator.next();
} else {
return null;
}
} finally {
iterator.release();
}
}
@Test
public void testAddLast() throws Exception {
final int COUNT = 1000;
Map<String, ByteSequence> map = new LinkedHashMap<String, ByteSequence>();
for (int i = 0; i < COUNT; i++) {
String test = new String("test" + i);
ByteSequence bs = new ByteSequence(test.getBytes());
map.put(test, bs);
plist.addLast(test, bs);
}
assertEquals(plist.size(), COUNT);
assertTrue(plist.messageSize() > 0);
int count = 0;
for (ByteSequence bs : map.values()) {
String origStr = new String(bs.getData(), bs.getOffset(), bs.getLength());
PListEntry entry = plist.get(count);
String plistString = new String(entry.getByteSequence().getData(), entry.getByteSequence().getOffset(), entry.getByteSequence().getLength());
assertEquals(origStr, plistString);
count++;
}
}
@Test
public void testAddFirst() throws Exception {
final int COUNT = 1000;
Map<String, ByteSequence> map = new LinkedHashMap<String, ByteSequence>();
for (int i = 0; i < COUNT; i++) {
String test = new String("test" + i);
ByteSequence bs = new ByteSequence(test.getBytes());
map.put(test, bs);
plist.addFirst(test, bs);
}
assertEquals(plist.size(), COUNT);
assertTrue(plist.messageSize() > 0);
long count = plist.size() - 1;
for (ByteSequence bs : map.values()) {
String origStr = new String(bs.getData(), bs.getOffset(), bs.getLength());
PListEntry entry = plist.get(count);
String plistString = new String(entry.getByteSequence().getData(), entry.getByteSequence().getOffset(), entry.getByteSequence().getLength());
assertEquals(origStr, plistString);
count--;
}
}
@Test
public void testRemove() throws IOException {
doTestRemove(2000);
}
protected void doTestRemove(final int COUNT) throws IOException {
Map<String, ByteSequence> map = new LinkedHashMap<String, ByteSequence>();
for (int i = 0; i < COUNT; i++) {
String test = new String("test" + i);
ByteSequence bs = new ByteSequence(test.getBytes());
map.put(test, bs);
plist.addLast(test, bs);
}
assertEquals(plist.size(), COUNT);
PListEntry entry = plist.getFirst();
while (entry != null) {
plist.remove(entry.getId());
entry = plist.getFirst();
}
assertEquals(0, plist.size());
assertEquals(0, plist.messageSize());
}
@Test
public void testDestroy() throws Exception {
doTestRemove(1);
plist.destroy();
assertEquals(0, plist.size());
assertEquals(0, plist.messageSize());
}
@Test
public void testDestroyNonEmpty() throws Exception {
final int COUNT = 1000;
Map<String, ByteSequence> map = new LinkedHashMap<String, ByteSequence>();
for (int i = 0; i < COUNT; i++) {
String test = new String("test" + i);
ByteSequence bs = new ByteSequence(test.getBytes());
map.put(test, bs);
plist.addLast(test, bs);
}
plist.destroy();
assertEquals(0, plist.size());
assertEquals(0, plist.messageSize());
}
@Test
public void testRemoveSecond() throws Exception {
plist.addLast("First", new ByteSequence("A".getBytes()));
plist.addLast("Second", new ByteSequence("B".getBytes()));
assertTrue(plist.remove("Second"));
assertTrue(plist.remove("First"));
assertFalse(plist.remove("doesNotExist"));
}
@Test
public void testRemoveSingleEntry() throws Exception {
plist.addLast("First", new ByteSequence("A".getBytes()));
Iterator<PListEntry> iterator = plist.iterator();
while (iterator.hasNext()) {
iterator.next();
iterator.remove();
}
}
@Test
public void testRemoveSecondPosition() throws Exception {
plist.addLast("First", new ByteSequence("A".getBytes()));
plist.addLast("Second", new ByteSequence("B".getBytes()));
assertTrue(plist.remove(1));
assertTrue(plist.remove(0));
assertFalse(plist.remove(0));
}
@Test
public void testConcurrentAddRemove() throws Exception {
File directory = store.getDirectory();
store.stop();
IOHelper.mkdirs(directory);
IOHelper.deleteChildren(directory);
store = new PListStoreImpl();
store.setCleanupInterval(400);
store.setDirectory(directory);
store.setJournalMaxFileLength(1024 * 5);
store.setLazyInit(false);
store.start();
final ByteSequence payload = new ByteSequence(new byte[1024 * 2]);
final Vector<Throwable> exceptions = new Vector<Throwable>();
final int iterations = 1000;
final int numLists = 10;
final PList[] lists = new PList[numLists];
String threadName = Thread.currentThread().getName();
for (int i = 0; i < numLists; i++) {
Thread.currentThread().setName("C:" + String.valueOf(i));
lists[i] = store.getPList(String.valueOf(i));
}
Thread.currentThread().setName(threadName);
executor = Executors.newFixedThreadPool(100);
class A implements Runnable {
@Override
public void run() {
final String threadName = Thread.currentThread().getName();
try {
for (int i = 0; i < iterations; i++) {
PList candidate = lists[i % numLists];
Thread.currentThread().setName("ALRF:" + candidate.getName());
synchronized (plistLocks(candidate)) {
Object locator = candidate.addLast(String.valueOf(i), payload);
getFirst(candidate);
assertTrue(candidate.remove(locator));
}
}
} catch (Exception error) {
LOG.error("Unexpcted ex", error);
error.printStackTrace();
exceptions.add(error);
} finally {
Thread.currentThread().setName(threadName);
}
}
};
class B implements Runnable {
@Override
public void run() {
final String threadName = Thread.currentThread().getName();
try {
for (int i = 0; i < iterations; i++) {
PList candidate = lists[i % numLists];
Thread.currentThread().setName("ALRF:" + candidate.getName());
synchronized (plistLocks(candidate)) {
Object locator = candidate.addLast(String.valueOf(i), payload);
getFirst(candidate);
assertTrue(candidate.remove(locator));
}
}
} catch (Exception error) {
error.printStackTrace();
exceptions.add(error);
} finally {
Thread.currentThread().setName(threadName);
}
}
};
executor.execute(new A());
executor.execute(new A());
executor.execute(new A());
executor.execute(new B());
executor.execute(new B());
executor.execute(new B());
executor.shutdown();
boolean finishedInTime = executor.awaitTermination(30, TimeUnit.SECONDS);
assertTrue("no exceptions", exceptions.isEmpty());
assertTrue("finished ok", finishedInTime);
}
@Test
public void testConcurrentAddLast() throws Exception {
File directory = store.getDirectory();
store.stop();
IOHelper.mkdirs(directory);
IOHelper.deleteChildren(directory);
store = new PListStoreImpl();
store.setDirectory(directory);
store.start();
final int numThreads = 20;
final int iterations = 1000;
executor = Executors.newFixedThreadPool(100);
for (int i = 0; i < numThreads; i++) {
new Job(i, PListTest.TaskType.ADD, iterations).run();
}
for (int i = 0; i < numThreads; i++) {
executor.execute(new Job(i, PListTest.TaskType.ITERATE, iterations));
}
for (int i = 0; i < 100; i++) {
executor.execute(new Job(i + 20, PListTest.TaskType.ADD, 100));
}
executor.shutdown();
boolean finishedInTime = executor.awaitTermination(60 * 5, TimeUnit.SECONDS);
assertTrue("finished ok", finishedInTime);
}
@Test
public void testOverFlow() throws Exception {
File directory = store.getDirectory();
store.stop();
IOHelper.mkdirs(directory);
IOHelper.deleteChildren(directory);
store = new PListStoreImpl();
store.setDirectory(directory);
store.start();
for (int i = 0; i < 2000; i++) {
new Job(i, PListTest.TaskType.ADD, 5).run();
}
LOG.info("After Load index file: " + store.pageFile.getFile().length());
LOG.info("After remove index file: " + store.pageFile.getFile().length());
}
@Test
public void testConcurrentAddRemoveWithPreload() throws Exception {
File directory = store.getDirectory();
store.stop();
IOHelper.mkdirs(directory);
IOHelper.deleteChildren(directory);
store = new PListStoreImpl();
store.setDirectory(directory);
store.setJournalMaxFileLength(1024 * 5);
store.setCleanupInterval(5000);
store.setIndexWriteBatchSize(500);
store.start();
final int iterations = 500;
final int numLists = 10;
// prime the store
// create/delete
LOG.info("create");
for (int i = 0; i < numLists; i++) {
new Job(i, PListTest.TaskType.CREATE, iterations).run();
}
LOG.info("delete");
for (int i = 0; i < numLists; i++) {
new Job(i, PListTest.TaskType.DELETE, iterations).run();
}
LOG.info("fill");
for (int i = 0; i < numLists; i++) {
new Job(i, PListTest.TaskType.ADD, iterations).run();
}
LOG.info("remove");
for (int i = 0; i < numLists; i++) {
new Job(i, PListTest.TaskType.REMOVE, iterations).run();
}
LOG.info("check empty");
for (int i = 0; i < numLists; i++) {
assertEquals("empty " + i, 0, store.getPList("List-" + i).size());
}
LOG.info("delete again");
for (int i = 0; i < numLists; i++) {
new Job(i, PListTest.TaskType.DELETE, iterations).run();
}
LOG.info("fill again");
for (int i = 0; i < numLists; i++) {
new Job(i, PListTest.TaskType.ADD, iterations).run();
}
LOG.info("parallel add and remove");
executor = Executors.newFixedThreadPool(numLists * 2);
for (int i = 0; i < numLists * 2; i++) {
executor.execute(new Job(i, i >= numLists ? PListTest.TaskType.ADD : PListTest.TaskType.REMOVE, iterations));
}
executor.shutdown();
LOG.info("wait for parallel work to complete");
boolean finishedInTime = executor.awaitTermination(60 * 5, TimeUnit.SECONDS);
assertTrue("no exceptions", exceptions.isEmpty());
assertTrue("finished ok", finishedInTime);
}
// for non determinant issues, increasing this may help diagnose
final int numRepeats = 1;
@Test
public void testRepeatStressWithCache() throws Exception {
for (int i = 0; i < numRepeats; i++) {
do_testConcurrentAddIterateRemove(true);
}
}
@Test
public void testRepeatStressWithOutCache() throws Exception {
for (int i = 0; i < numRepeats; i++) {
do_testConcurrentAddIterateRemove(false);
}
}
public void do_testConcurrentAddIterateRemove(boolean enablePageCache) throws Exception {
File directory = store.getDirectory();
store.stop();
IOHelper.mkdirs(directory);
IOHelper.deleteChildren(directory);
store = new PListStoreImpl();
store.setIndexEnablePageCaching(enablePageCache);
store.setIndexPageSize(2 * 1024);
store.setDirectory(directory);
store.start();
final int iterations = 500;
final int numLists = 10;
LOG.info("create");
for (int i = 0; i < numLists; i++) {
new Job(i, PListTest.TaskType.CREATE, iterations).run();
}
LOG.info("fill");
for (int i = 0; i < numLists; i++) {
new Job(i, PListTest.TaskType.ADD, iterations).run();
}
LOG.info("parallel add and remove");
executor = Executors.newFixedThreadPool(400);
final int numProducer = 5;
final int numConsumer = 10;
for (int i = 0; i < numLists; i++) {
for (int j = 0; j < numProducer; j++) {
executor.execute(new Job(i, PListTest.TaskType.ADD, iterations * 2));
}
for (int k = 0; k < numConsumer; k++) {
executor.execute(new Job(i, TaskType.ITERATE_REMOVE, iterations / 4));
}
}
for (int i = numLists; i < numLists * 10; i++) {
executor.execute(new Job(i, PListTest.TaskType.ADD, iterations));
}
executor.shutdown();
LOG.info("wait for parallel work to complete");
boolean shutdown = executor.awaitTermination(60 * 60, TimeUnit.SECONDS);
assertTrue("no exceptions: " + exceptions, exceptions.isEmpty());
assertTrue("test did not timeout ", shutdown);
}
@Test
public void testConcurrentAddIterate() throws Exception {
File directory = store.getDirectory();
store.stop();
IOHelper.mkdirs(directory);
IOHelper.deleteChildren(directory);
store = new PListStoreImpl();
store.setIndexPageSize(2 * 1024);
store.setJournalMaxFileLength(1024 * 1024);
store.setDirectory(directory);
store.setCleanupInterval(-1);
store.setIndexEnablePageCaching(false);
store.setIndexWriteBatchSize(100);
store.start();
final int iterations = 250;
final int numLists = 10;
LOG.info("create");
for (int i = 0; i < numLists; i++) {
new Job(i, PListTest.TaskType.CREATE, iterations).run();
}
LOG.info("parallel add and iterate");
// We want a lot of adds occurring so that new free pages get created
// along
// with overlapping seeks from the iterators so that we are likely to
// seek into
// some bad area in the page file.
executor = Executors.newFixedThreadPool(100);
final int numProducer = 30;
final int numConsumer = 10;
for (int i = 0; i < numLists; i++) {
for (int j = 0; j < numProducer; j++) {
executor.execute(new Job(i, PListTest.TaskType.ADD, iterations));
}
for (int k = 0; k < numConsumer; k++) {
executor.execute(new Job(i, TaskType.ITERATE, iterations * 2));
}
}
executor.shutdown();
LOG.info("wait for parallel work to complete");
boolean shutdown = executor.awaitTermination(5 * 60, TimeUnit.SECONDS);
assertTrue("no exceptions: " + exceptions, exceptions.isEmpty());
assertTrue("test did not timeout ", shutdown);
LOG.info("Num dataFiles:" + store.getJournal().getFiles().size());
}
enum TaskType {
CREATE, DELETE, ADD, REMOVE, ITERATE, ITERATE_REMOVE
}
class Job implements Runnable {
int id;
TaskType task;
int iterations;
public Job(int id, TaskType t, int iterations) {
this.id = id;
this.task = t;
this.iterations = iterations;
}
@Override
public void run() {
final String threadName = Thread.currentThread().getName();
try {
PListImpl plist = null;
switch (task) {
case CREATE:
Thread.currentThread().setName("C:" + id);
plist = store.getPList(String.valueOf(id));
LOG.info("Job-" + id + ", CREATE");
break;
case DELETE:
Thread.currentThread().setName("D:" + id);
store.removePList(String.valueOf(id));
break;
case ADD:
Thread.currentThread().setName("A:" + id);
plist = store.getPList(String.valueOf(id));
for (int j = 0; j < iterations; j++) {
synchronized (plistLocks(plist)) {
if (exceptions.isEmpty()) {
plist.addLast("PL>" + id + idSeed + "-" + j, payload);
} else {
break;
}
}
}
if (exceptions.isEmpty()) {
LOG.info("Job-" + id + ", Add, done: " + iterations);
}
break;
case REMOVE:
Thread.currentThread().setName("R:" + id);
plist = store.getPList(String.valueOf(id));
synchronized (plistLocks(plist)) {
for (int j = iterations - 1; j >= 0; j--) {
plist.remove("PL>" + id + idSeed + "-" + j);
if (j > 0 && j % (iterations / 2) == 0) {
LOG.info("Job-" + id + " Done remove: " + j);
}
}
}
break;
case ITERATE:
Thread.currentThread().setName("I:" + id);
plist = store.getPList(String.valueOf(id));
int iterateCount = 0;
synchronized (plistLocks(plist)) {
if (exceptions.isEmpty()) {
Iterator<PListEntry> iterator = plist.iterator();
while (iterator.hasNext() && exceptions.isEmpty()) {
iterator.next();
iterateCount++;
}
// LOG.info("Job-" + id + " Done iterate: it=" +
// iterator + ", count:" + iterateCount +
// ", size:" + plist.size());
if (plist.size() != iterateCount) {
System.err.println("Count Wrong: " + iterator);
}
assertEquals("iterate got all " + id + " iterator:" + iterator, plist.size(), iterateCount);
}
}
break;
case ITERATE_REMOVE:
Thread.currentThread().setName("IRM:" + id);
plist = store.getPList(String.valueOf(id));
int removeCount = 0;
synchronized (plistLocks(plist)) {
Iterator<PListEntry> removeIterator = plist.iterator();
while (removeIterator.hasNext()) {
removeIterator.next();
removeIterator.remove();
if (removeCount++ > iterations) {
break;
}
}
}
LOG.info("Job-" + id + " Done remove: " + removeCount);
break;
default:
}
} catch (Exception e) {
LOG.warn("Job[" + id + "] caught exception: " + e.getMessage());
e.printStackTrace();
exceptions.add(e);
if (executor != null) {
executor.shutdownNow();
}
} finally {
Thread.currentThread().setName(threadName);
}
}
}
Map<PList, Object> locks = new HashMap<PList, Object>();
private Object plistLocks(PList plist) {
Object lock = null;
synchronized (locks) {
if (locks.containsKey(plist)) {
lock = locks.get(plist);
} else {
lock = new Object();
locks.put(plist, lock);
}
}
return lock;
}
@Before
public void setUp() throws Exception {
File directory = new File("target/test/PlistDB");
IOHelper.mkdirs(directory);
IOHelper.deleteChildren(directory);
startStore(directory);
}
protected void startStore(File directory) throws Exception {
store = new PListStoreImpl();
store.setDirectory(directory);
store.start();
plist = store.getPList("main");
}
@After
public void tearDown() throws Exception {
if (executor != null) {
executor.shutdownNow();
}
store.stop();
exceptions.clear();
}
}