private void RetryableMatchEvent(EventBean theEvent, ICollection <FilterHandle> matches)
{
// Install lock backoff exception handler that retries the evaluation.
try
{
_eventTypeIndex.MatchEvent(theEvent, matches);
}
catch (FilterLockBackoffException ex)
{
// retry on lock back-off
// lock-backoff may occur when stateful evaluations take place such as bool expressions that are subqueries
// statements that contain subqueries in pattern filter expression can themselves modify filters, leading to a theoretically possible deadlock
long delayNs = 10;
while (true)
{
try
{
// yield
try
{
Thread.Sleep(0);
}
catch (ThreadInterruptedException e)
{
Thread.CurrentThread.Interrupt();
}
// delay
MicroThread.SleepNano(delayNs);
if (delayNs < 1000000000)
{
delayNs = delayNs * 2;
}
// evaluate
matches.Clear();
_eventTypeIndex.MatchEvent(theEvent, matches);
break;
}
catch (FilterLockBackoffException ex2)
{
// retried
}
}
}
}
public void TestMatch()
{
List <FilterHandle> matchesList = new List <FilterHandle>();
// Invoke match
_testIndex.MatchEvent(_testEventBean, matchesList);
Assert.AreEqual(1, matchesList.Count);
Assert.AreEqual(_filterCallback, matchesList[0]);
}
public void TestInterfaceMatch()
{
_testEventBean = SupportEventBeanFactory.CreateObject(new ISupportABCImpl("a", "b", "ab", "c"));
_testEventType = SupportEventTypeFactory.CreateBeanType(typeof(ISupportBaseAB));
_testIndex = new EventTypeIndex(new FilterServiceGranularLockFactoryReentrant());
_testIndex.Add(_testEventType, _handleSetNode);
List <FilterHandle> matchesList = new List <FilterHandle>();
_testIndex.MatchEvent(_testEventBean, matchesList);
Assert.AreEqual(1, matchesList.Count);
Assert.AreEqual(_filterCallback, matchesList[0]);
}
public void TestSuperclassMatch()
{
_testEventBean = SupportEventBeanFactory.CreateObject(new ISupportAImplSuperGImplPlus());
_testEventType = SupportEventTypeFactory.CreateBeanType(typeof(ISupportA));
_testIndex = new EventTypeIndex(new FilterServiceGranularLockFactoryReentrant(_container.RWLockManager()));
_testIndex.Add(_testEventType, _handleSetNode);
List <FilterHandle> matchesList = new List <FilterHandle>();
_testIndex.MatchEvent(_testEventBean, matchesList);
Assert.AreEqual(1, matchesList.Count);
Assert.AreEqual(_filterCallback, matchesList[0]);
}
