/*
* JBoss, the OpenSource J2EE webOS
*
* Distributable under LGPL license.
* See terms of license at gnu.org.
*/
package org.jboss.cache.eviction;
import org.jboss.cache.CacheSPI;
import org.jboss.cache.DefaultCacheFactory;
import org.jboss.cache.Fqn;
import org.jboss.cache.config.Configuration;
import org.jboss.cache.config.EvictionConfig;
import org.jboss.cache.config.EvictionRegionConfig;
import org.jboss.cache.factories.UnitTestCacheConfigurationFactory;
import org.jboss.cache.lock.IsolationLevel;
import org.jboss.cache.misc.TestingUtil;
import static org.testng.AssertJUnit.*;
import org.testng.annotations.AfterMethod;
import org.testng.annotations.BeforeMethod;
import org.testng.annotations.Test;
import java.util.List;
import java.util.ArrayList;
/**
* Unit tests for FIFOPolicy.
*
* @author Daniel Huang (dhuang@jboss.org)
* @version $Revision: 5238 $
*/
@Test(groups = {"functional"})
public class FIFOPolicyTest
{
CacheSPI<Object, Object> cache;
int wakeupIntervalMillis = 0;
final String ROOT_STR = "/test";
Throwable t1_ex, t2_ex;
final long DURATION = 10000;
boolean isTrue;
@BeforeMethod(alwaysRun = true)
public void setUp() throws Exception
{
initCaches();
wakeupIntervalMillis = cache.getConfiguration().getEvictionConfig().getWakeupIntervalSeconds() * 1000;
log("wakeupInterval is " + wakeupIntervalMillis);
if (wakeupIntervalMillis < 0)
{
fail("testEviction(): eviction thread wake up interval is illegal " + wakeupIntervalMillis);
}
t1_ex = t2_ex = null;
isTrue = true;
}
void initCaches() throws Exception
{
Configuration config = UnitTestCacheConfigurationFactory.createConfiguration(Configuration.CacheMode.LOCAL, true);
EvictionConfig evConfig = config.getEvictionConfig();
evConfig.setWakeupIntervalSeconds(3);
evConfig.setDefaultEventQueueSize(20000);
evConfig.setDefaultEvictionPolicyClass("org.jboss.cache.eviction.FIFOPolicy");
List<EvictionRegionConfig> erConfigs = new ArrayList<EvictionRegionConfig>();
erConfigs.add(createEvictionRegionConfig("/_default_",5000));
erConfigs.add(createEvictionRegionConfig("/org/jboss/test/data",5));
evConfig.setEvictionRegionConfigs(erConfigs);
config.setTransactionManagerLookupClass("org.jboss.cache.transaction.DummyTransactionManagerLookup");
config.setIsolationLevel(IsolationLevel.SERIALIZABLE);
cache = (CacheSPI<Object, Object>) new DefaultCacheFactory().createCache(config, true);// read in generic local xml
}
private EvictionRegionConfig createEvictionRegionConfig(String regionName, int maxNodes)
{
EvictionRegionConfig ercDefault = new EvictionRegionConfig();
ercDefault.setRegionName(regionName);
FIFOConfiguration esConfig = new FIFOConfiguration();
if (maxNodes >= 0) esConfig.setMaxNodes(maxNodes);
ercDefault.setEvictionPolicyConfig(esConfig);
return ercDefault;
}
@AfterMethod(alwaysRun = true)
public void tearDown() throws Exception
{
cache.stop();
}
public void testEviction()
{
String rootStr = "/org/jboss/test/data/";
for (int i = 0; i < 10; i++)
{
String str = rootStr + i;
Fqn fqn = Fqn.fromString(str);
try
{
cache.put(fqn, str, str);
}
catch (Exception e)
{
fail("Failed to insert data" + e);
e.printStackTrace();
}
}
TestingUtil.sleepThread(wakeupIntervalMillis + 500);
try
{
String val = (String) cache.get(rootStr + "3", rootStr + "3");
assertNull("DataNode should be empty ", val);
assertNull(cache.get(rootStr + "1", rootStr + "1"));
assertNull(cache.get(rootStr + "2", rootStr + "2"));
assertNull(cache.get(rootStr + "0", rootStr + "0"));
assertNull(cache.get(rootStr + "4", rootStr + "4"));
assertNotNull(cache.get(rootStr + "5", rootStr + "5"));
}
catch (Exception e)
{
e.printStackTrace();
fail("Failed to get" + e);
}
}
public void testEviction2() throws Exception
{
String rootStr = "/org/jboss/data";
int maxNodes = 5000;
for (int i = 0; i < maxNodes * 2; i++)
{
String str = rootStr + i;
Fqn fqn = Fqn.fromString(str);
cache.put(fqn, str, str);
}
TestingUtil.sleepThread(wakeupIntervalMillis + 500);
assertEquals("Number of nodes", maxNodes + 2, cache.getNumberOfNodes());
for (int i = 0; i < maxNodes; i++)
{
String n = rootStr + i;
assertNull("DataNode should be empty " + cache.getNode(n) + " " + n,
cache.get(n, n));
}
for (int i = maxNodes; i < maxNodes * 2; i++)
{
assertNotNull(cache.get(rootStr + Integer.toString(i), rootStr + Integer.toString(i)));
}
// add another node to cache. this should push node 5000 out of cache.
cache.put(rootStr + "a", rootStr + "a", rootStr + "a");
for (int i = maxNodes + 1; i < maxNodes; i++)
{
assertNotNull(cache.get(rootStr + Integer.toString(i), rootStr + Integer.toString(i)));
}
assertNotNull(cache.get(rootStr + "a", rootStr + "a"));
}
public void testNodeVisited()
{
String rootStr = "/org/jboss/test/data/";
for (int i = 0; i < 10; i++)
{
String str = rootStr + i;
Fqn fqn = Fqn.fromString(str);
try
{
cache.put(fqn, str, str);
}
catch (Exception e)
{
fail("Failed to insert data" + e);
e.printStackTrace();
}
}
int period = wakeupIntervalMillis + 500;
log("sleeping for " + period + "ms");
TestingUtil.sleepThread(period);// it really depends the eviction thread time.
try
{
for (int i = 0; i < 5; i++)
{
String str = rootStr + Integer.toString(i);
Fqn fqn = Fqn.fromString(str);
assertNull(cache.get(fqn, str));
}
for (int i = 5; i < 10; i++)
{
String str = rootStr + Integer.toString(i);
Fqn fqn = Fqn.fromString(str);
assertNotNull(cache.get(fqn, str));
}
TestingUtil.sleepThread(period);
// since it is FIFO if we leave it alone and revisit, cache should remain the same.
for (int i = 5; i < 10; i++)
{
String str = rootStr + Integer.toString(i);
Fqn fqn = Fqn.fromString(str);
cache.get(fqn, str);// just to keep it fresh
System.out.println("-- sleeping for " + period + "ms");
}
}
catch (Exception e)
{
e.printStackTrace();
fail("Failed to evict" + e);
}
}
public void testNodeRemoved()
{
String rootStr = "/org/jboss/test";
for (int i = 0; i < 10; i++)
{
String str = rootStr + i + "/" + i;
Fqn fqn = Fqn.fromString(str);
String str2 = rootStr + i;
Fqn fqn2 = Fqn.fromString(str2);
try
{
cache.put(fqn, str, str);
cache.put(fqn2, str2, str2);
}
catch (Exception e)
{
fail("Failed to insert data" + e);
e.printStackTrace();
}
}
int period = (wakeupIntervalMillis + 500);
log("period is " + period);
TestingUtil.sleepThread(period);
String str1 = rootStr + "7";
Fqn fqn1 = Fqn.fromString(str1);
String str2 = rootStr + "7/7";
Fqn fqn2 = Fqn.fromString(str2);
try
{
assertNotNull(cache.get(fqn2, str2));
assertNotNull(cache.get(fqn1, str1));
cache.removeNode(fqn2);
TestingUtil.sleepThread(period);
assertNull(cache.get(fqn2, str2));
assertNotNull(cache.get(fqn1, str1));
cache.removeNode(fqn1);
TestingUtil.sleepThread(period);
assertNull(cache.get(fqn1, str1));
assertNull(cache.get(fqn2, str2));
String str3 = rootStr + "5/5";
String str4 = rootStr + "5";
Fqn fqn3 = Fqn.fromString(str3);
Fqn fqn4 = Fqn.fromString(str4);
assertNotNull(cache.get(fqn3, str3));
assertNotNull(cache.get(fqn4, str4));
TestingUtil.sleepThread(period);
// remove the node above fqn4 /org/jboss/test/5 will cascade the delete into /org/jboss/test/5/5
cache.removeNode(fqn4);
TestingUtil.sleepThread(period);
assertNull(cache.get(fqn3, str3));
assertNull(cache.get(fqn4, str4));
}
catch (Exception e)
{
e.printStackTrace();
fail("Failed to evict" + e);
}
}
class MyPutter extends Thread
{
public MyPutter(String name)
{
super(name);
}
public void run()
{
int i = 0;
final String myName = ROOT_STR + "/test1/node" + getName();
while (isTrue)
{
try
{
cache.put(myName + i++, "value", i);
sleep(1);
}
catch (Throwable e)
{
e.printStackTrace();
if (t1_ex == null)
{
t1_ex = e;
}
}
}
}
}
public void testConcurrentPutAndEvict() throws Exception
{
cache.stop();
cache.destroy();
cache.getConfiguration().setIsolationLevel(IsolationLevel.REPEATABLE_READ);
cache.start();
cache.put(ROOT_STR + "/concurrentPutAndEvict", "value", 1);
for (int i = 0; i < 10; i++)
{
new MyPutter("Putter" + i).start();
}
int counter = 0;
while (true)
{
counter++;
if (t1_ex != null)
{
fail("Exception generated in put() " + t1_ex);
}
log("nodes/locks: " + cache.getNumberOfNodes() + "/" + cache.getNumberOfLocksHeld());
TestingUtil.sleepThread(1000);
if (counter > 10)
{// run for 10 seconds
isTrue = false;
break;
}
}
}
void log(String msg)
{
System.out.println("-- " + msg);
}
}