package org.infinispan.notifications.cachelistener;
import static org.infinispan.test.TestingUtil.k;
import static org.infinispan.test.TestingUtil.v;
import static org.testng.AssertJUnit.assertTrue;
import static org.testng.AssertJUnit.fail;
import java.lang.reflect.Method;
import javax.transaction.HeuristicRollbackException;
import javax.transaction.RollbackException;
import org.infinispan.Cache;
import org.infinispan.commons.CacheException;
import org.infinispan.configuration.cache.CacheMode;
import org.infinispan.configuration.cache.ConfigurationBuilder;
import org.infinispan.notifications.Listener;
import org.infinispan.notifications.cachelistener.annotation.CacheEntryCreated;
import org.infinispan.notifications.cachelistener.annotation.CacheEntryModified;
import org.infinispan.notifications.cachelistener.event.CacheEntryEvent;
import org.infinispan.remoting.transport.jgroups.SuspectException;
import org.infinispan.test.MultipleCacheManagersTest;
import org.testng.annotations.Test;
/**
* Tests the behaviour of caches when hooked listeners throw exceptions under
* different circumstances with XA transactions.
*
* @author Galder ZamarreƱo
* @author Tomas Sykora
* @since 5.0
*/
@Test(groups = "functional", testName = "notifications.cachelistener.ListenerExceptionTest")
public class ListenerExceptionTest extends MultipleCacheManagersTest {
@Override
protected void createCacheManagers() throws Throwable {
ConfigurationBuilder builder = getDefaultClusteredCacheConfig(
CacheMode.REPL_SYNC, true);
builder.transaction().useSynchronization(false)
.recovery().enabled(false);
createClusteredCaches(2, builder);
}
public void testPreOpExceptionListenerOnCreate(Method m) {
doCallsWithExcepList(m, true, FailureLocation.ON_CREATE);
}
public void testPostOpExceptionListenerOnCreate(Method m) {
doCallsWithExcepList(m, false, FailureLocation.ON_CREATE);
}
public void testPreOpExceptionListenerOnPut(Method m) {
manager(0).getCache().put(k(m), "init");
doCallsWithExcepList(m, true, FailureLocation.ON_MODIFIED);
}
public void testPostOpExceptionListenerOnPut(Method m) {
manager(0).getCache().put(k(m), "init");
doCallsWithExcepList(m, false, FailureLocation.ON_MODIFIED);
}
public void testPreOpExceptionListenerOnCreateAsync(Method m) {
doCallsWithExcepListAsync(m, true, FailureLocation.ON_CREATE);
}
public void testPostOpExceptionListenerOnCreateAsync(Method m) {
doCallsWithExcepListAsync(m, false, FailureLocation.ON_CREATE);
}
public void testPreOpExceptionListenerOnPutAsync(Method m) {
manager(0).getCache().put(k(m), "init");
doCallsWithExcepListAsync(m, true, FailureLocation.ON_MODIFIED);
}
public void testPostOpExceptionListenerOnPutAsync(Method m) {
manager(0).getCache().put(k(m), "init");
doCallsWithExcepListAsync(m, false, FailureLocation.ON_MODIFIED);
}
private void doCallsWithExcepList(Method m, boolean isInjectInPre,
FailureLocation failLoc) {
Cache<String, String> cache = manager(0).getCache();
ErrorInducingListener listener =
new ErrorInducingListener(isInjectInPre, failLoc);
cache.addListener(listener);
try {
cache.put(k(m), v(m));
} catch (CacheException e) {
Throwable cause = e.getCause();
if (isInjectInPre)
assertExpectedException(cause, cause instanceof SuspectException);
else
assertExpectedException(cause, cause instanceof RollbackException || cause instanceof HeuristicRollbackException);
// Expected, now try to simulate a failover
listener.injectFailure = false;
manager(1).getCache().put(k(m), v(m, 2));
return;
}
fail("Should have failed");
}
private void assertExpectedException(Throwable cause, boolean condition) {
assertTrue("Unexpected exception cause " + cause, condition);
}
/**
* If it is used asynchronous listener all callbacks are made in separate thread. Exceptions are only logged, not
* thrown. See {@link org.infinispan.notifications.impl.AbstractListenerImpl} invoke() method logic
*/
private void doCallsWithExcepListAsync(Method m, boolean isInjectInPre,
FailureLocation failLoc) {
Cache<String, String> cache = manager(0).getCache();
ErrorInducingListenerAsync listenerAsync =
new ErrorInducingListenerAsync(isInjectInPre, failLoc);
cache.addListener(listenerAsync);
cache.put(k(m), v(m));
assert cache.get(k(m)).equals(v(m));
assert listenerAsync.caller != Thread.currentThread();
}
@Listener
public static class ErrorInducingListener {
boolean injectFailure = true;
boolean isInjectInPre;
FailureLocation failureLocation;
public ErrorInducingListener(boolean injectInPre, FailureLocation failLoc) {
this.isInjectInPre = injectInPre;
this.failureLocation = failLoc;
}
@CacheEntryCreated
@SuppressWarnings("unused")
public void entryCreated(CacheEntryEvent event) throws Exception {
if (failureLocation == FailureLocation.ON_CREATE)
injectFailure(event);
}
@CacheEntryModified
@SuppressWarnings("unused")
public void entryModified(CacheEntryEvent event) throws Exception {
if (failureLocation == FailureLocation.ON_MODIFIED)
injectFailure(event);
}
private void injectFailure(CacheEntryEvent event) {
if (injectFailure) {
if (isInjectInPre && event.isPre())
throwSuspectException();
else if (!isInjectInPre && !event.isPre())
throwSuspectException();
}
}
private void throwSuspectException() {
throw new SuspectException(String.format(
"Simulated suspicion when isPre=%b and in %s",
isInjectInPre, failureLocation));
}
}
@Listener(sync = false)
public static class ErrorInducingListenerAsync {
boolean injectFailure = true;
boolean isInjectInPre;
FailureLocation failureLocation;
Thread caller;
public ErrorInducingListenerAsync(boolean injectInPre, FailureLocation failLoc) {
this.isInjectInPre = injectInPre;
this.failureLocation = failLoc;
}
@CacheEntryCreated
@SuppressWarnings("unused")
public void entryCreated(CacheEntryEvent event) throws Exception {
caller = Thread.currentThread();
if (failureLocation == FailureLocation.ON_CREATE)
injectFailure(event);
}
@CacheEntryModified
@SuppressWarnings("unused")
public void entryModified(CacheEntryEvent event) throws Exception {
caller = Thread.currentThread();
if (failureLocation == FailureLocation.ON_MODIFIED)
injectFailure(event);
}
private void injectFailure(CacheEntryEvent event) {
if (injectFailure) {
if (isInjectInPre && event.isPre())
throwSuspectException();
else if (!isInjectInPre && !event.isPre())
throwSuspectException();
}
}
private void throwSuspectException() {
throw new SuspectException(String.format(
"Simulated ASYNC suspicion when isPre=%b and in %s",
isInjectInPre, failureLocation));
}
}
private static enum FailureLocation {
ON_CREATE, ON_MODIFIED
}
}