package org.infinispan.notifications;
import java.util.LinkedList;
import java.util.List;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.atomic.AtomicInteger;
import org.infinispan.Cache;
import org.infinispan.manager.CacheContainer;
import org.infinispan.notifications.cachelistener.annotation.CacheEntryCreated;
import org.infinispan.notifications.cachelistener.annotation.CacheEntryModified;
import org.infinispan.notifications.cachelistener.annotation.CacheEntryRemoved;
import org.infinispan.notifications.cachelistener.annotation.CacheEntryVisited;
import org.infinispan.notifications.cachelistener.event.Event;
import org.infinispan.test.AbstractInfinispanTest;
import org.infinispan.test.TestingUtil;
import org.infinispan.test.fwk.TestCacheManagerFactory;
import org.infinispan.util.logging.Log;
import org.infinispan.util.logging.LogFactory;
import org.testng.annotations.AfterMethod;
import org.testng.annotations.BeforeMethod;
import org.testng.annotations.Test;
@Test(groups = {"functional", "smoke"}, testName = "notifications.ConcurrentNotificationTest")
public class ConcurrentNotificationTest extends AbstractInfinispanTest {
Cache<String, String> cache;
CacheContainer cm;
CacheListener listener;
Log log = LogFactory.getLog(ConcurrentNotificationTest.class);
@BeforeMethod
public void setUp() {
cm = TestCacheManagerFactory.createCacheManager(false);
cache = cm.getCache();
listener = new CacheListener();
cache.addListener(listener);
}
@AfterMethod
public void tearDown() {
TestingUtil.killCacheManagers(cm);
cm = null;
cache = null;
listener = null;
}
public void testThreads() throws Exception {
Thread workers[] = new Thread[20];
final List<Exception> exceptions = new LinkedList<Exception>();
final int loops = 100;
final CountDownLatch latch = new CountDownLatch(1);
for (int i = 0; i < workers.length; i++) {
workers[i] = new Thread() {
@Override
public void run() {
try {
latch.await();
}
catch (InterruptedException e) {
}
for (int j = 0; j < loops; j++) {
try {
cache.put("key", "value");
}
catch (Exception e) {
exceptions.add(new Exception("Caused on thread " + getName() + " in loop " + j + " when doing a put()", e));
}
try {
cache.remove("key");
}
catch (Exception e) {
exceptions.add(new Exception("Caused on thread " + getName() + " in loop " + j + " when doing a remove()", e));
}
try {
cache.get("key");
}
catch (Exception e) {
log.error("Exception received!", e);
exceptions.add(new Exception("Caused on thread " + getName() + " in loop " + j + " when doing a get()", e));
}
}
}
};
workers[i].start();
}
latch.countDown();
for (Thread t : workers)
t.join();
for (Exception e : exceptions)
throw e;
// we cannot ascertain the exact number of invocations on the replListener since some removes would mean that other
// gets would miss. And this would cause no notification to fire for that get. And we cannot be sure of the
// timing between removes and gets, so we just make sure *some* of these have got through, and no exceptions
// were thrown due to concurrent access.
assert loops * workers.length < listener.counter.get();
}
@Listener
static public class CacheListener {
private AtomicInteger counter = new AtomicInteger(0);
@CacheEntryModified
@CacheEntryRemoved
@CacheEntryVisited
@CacheEntryCreated
public void catchEvent(Event e) {
if (e.isPre())
counter.getAndIncrement();
}
}
}