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/*
* Copyright (c) 2010-2015 Pivotal Software, Inc. All rights reserved.
*
* 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. See accompanying
* LICENSE file.
*/
package com.gemstone.gemfire.internal.cache;
import java.io.File;
import java.util.Properties;
import junit.framework.TestCase;
import com.gemstone.gemfire.cache.AttributesFactory;
import com.gemstone.gemfire.cache.Cache;
import com.gemstone.gemfire.cache.CacheFactory;
import com.gemstone.gemfire.cache.DataPolicy;
import com.gemstone.gemfire.cache.DiskStore;
import com.gemstone.gemfire.cache.DiskStoreFactory;
import com.gemstone.gemfire.cache.EvictionAction;
import com.gemstone.gemfire.cache.EvictionAttributes;
import com.gemstone.gemfire.cache.Region;
import com.gemstone.gemfire.cache.RegionAttributes;
import com.gemstone.gemfire.cache.Scope;
import com.gemstone.gemfire.distributed.DistributedSystem;
import com.gemstone.gemfire.internal.Assert;
import com.gemstone.gemfire.internal.cache.lru.EnableLRU;
import com.gemstone.gemfire.internal.cache.lru.LRUClockNode;
import com.gemstone.gemfire.internal.cache.lru.NewLRUClockHand;
/**
* Test for simluating the deadLock condition as in bug#37244
*
* @author pbatra
*
*/
public class Bug37244JUnitTest extends TestCase
{
private static Cache cache = null;
private static DistributedSystem distributedSystem = null;
protected static String regionName = "TestRegion";
/*
* constructor
*/
public Bug37244JUnitTest(String name) {
super(name);
}
public void setUp() throws Exception
{
super.setUp();
}
public void tearDown() throws Exception
{
super.tearDown();
}
/**
* Method for intializing the VM
*
* @return
* @throws Exception
*/
private static void initializeVM() throws Exception
{
Properties props = new Properties();
props.setProperty("mcast-port", "0");
props.setProperty("locators", "");
props.setProperty("log-level", "info"); // to keep diskPerf logs smaller
distributedSystem = DistributedSystem.connect(props);
cache = CacheFactory.create(distributedSystem);
assertNotNull(cache);
DiskStoreFactory dsf = cache.createDiskStoreFactory();
AttributesFactory factory = new AttributesFactory();
factory.setScope(Scope.DISTRIBUTED_ACK);
File dir = new File("testingDirectoryDefault");
dir.mkdir();
dir.deleteOnExit();
File[] dirs = { dir };
dsf.setDiskDirsAndSizes(dirs, new int[] { Integer.MAX_VALUE });
dsf.setAutoCompact(false);
DirectoryHolder.SET_DIRECTORY_SIZE_IN_BYTES_FOR_TESTING_PURPOSES = true;
try {
factory.setDiskStoreName(dsf.create(regionName).getName());
} finally {
DirectoryHolder.SET_DIRECTORY_SIZE_IN_BYTES_FOR_TESTING_PURPOSES = false;
}
factory.setDiskSynchronous(true);
factory.setDataPolicy(DataPolicy.PERSISTENT_REPLICATE);
factory.setEvictionAttributes(EvictionAttributes.createLRUEntryAttributes(
1, EvictionAction.OVERFLOW_TO_DISK));
RegionAttributes attr = factory.create();
DistributedRegion distRegion = new DistributedRegion(regionName, attr,
null, (GemFireCacheImpl)cache, new InternalRegionArguments()
.setDestroyLockFlag(true).setRecreateFlag(false)
.setSnapshotInputStream(null).setImageTarget(null));
assertNotNull(distRegion);
((AbstractLRURegionMap)distRegion.entries)
._setLruList((new TestLRUClockHand(distRegion,
((AbstractLRURegionMap)distRegion.entries)._getCCHelper())));
((GemFireCacheImpl)cache).createVMRegion(regionName, attr,
new InternalRegionArguments().setInternalMetaRegion(distRegion)
.setDestroyLockFlag(true).setSnapshotInputStream(null)
.setImageTarget(null));
}
public void testPutWhileclear()
{
try {
initializeVM();
assertNotNull(cache);
Region rgn = cache.getRegion(regionName);
assertNotNull(rgn);
//put two entries into the region
for (int i = 0; i < 2; i++) {
rgn.put(new Long(i), new Long(i));
}
//get an entry back
Long value = (Long)rgn.get(new Long(0));
//check for entry value
assertTrue("Test failed ", value.equals(new Long(0)));
}
catch (Exception ex) {
ex.printStackTrace();
fail("Test failed");
}
finally {
assertNotNull(cache);
Region rgn = cache.getRegion(regionName);
assertNotNull(rgn);
rgn.localDestroyRegion();
cache.close();
}
}
/**
* Test Implementation class of NewLRUClockHand for bug37244.
*
*
* @author pbatra
* @author pallavis
*
*/
static public class TestLRUClockHand extends NewLRUClockHand
{
protected static Object mutex = new Object();
// private String regionName = "TestRegion";
protected static boolean EXECUTE_AFTER_GET_CALL = false;
/**
* Constructor
*
* @param region
* @param ccHelper
*/
public TestLRUClockHand(Region region, EnableLRU ccHelper) {
super(region, ccHelper,new InternalRegionArguments());
}
/**
* Overridden getLRUEntry method
*/
public LRUClockNode getLRUEntry()
{
if (EXECUTE_AFTER_GET_CALL) {
Cache cache = CacheFactory.getAnyInstance();
Assert.assertTrue(cache != null);
LocalRegion region = (LocalRegion)cache.getRegion(regionName);
Assert.assertTrue(region != null);
Thread clearThread = new Thread(new clearThread(region));
clearThread.start();
try {
synchronized (mutex) {
mutex.wait(10000);
}
}
catch (InterruptedException ie) {
if (cache.getLogger().fineEnabled()) {
cache.getLogger().fine(
"TestLRUClockHand#getLRUEntry Got an interrupted Exception");
}
fail("interrupted");
}
}
LRUClockNode aNode = super.getLRUEntry();
return aNode;
}
/**
*
* clearThread
*
*/
protected static class clearThread implements Runnable
{
LocalRegion region = null;
clearThread(LocalRegion rgn) {
super();
this.region = rgn;
}
public void run()
{
Cache cache = CacheFactory.getAnyInstance();
region.getDiskRegion().acquireWriteLock();
try {
Thread putThread = new Thread(new putThread(region));
putThread.start();
Thread.sleep(2000);
synchronized (mutex) {
mutex.notify();
}
Thread.sleep(5000);
region.clear();
}
catch (InterruptedException e) {
if (cache.getLogger().fineEnabled()) {
cache.getLogger().fine(
"TestLRUClockHand#clearThread Got an interrupted Exception");
}
fail("interrupted");
}
catch (Exception ie) {
fail("TestLRUClockHand#clearThread Got an Exception");
}
finally {
region.getDiskRegion().releaseWriteLock();
}
}
}
/**
*
* putThread
*
*/
protected static class putThread implements Runnable
{
LocalRegion region = null;
putThread(LocalRegion rgn) {
super();
this.region = rgn;
}
public void run()
{
region.put(new Long(1), "2");
}
}
}
}