@Test
public void testWindowGen() throws Exception {
final AtomicLong currentWindow = new AtomicLong();
final AtomicInteger beginWindowCount = new AtomicInteger();
final AtomicInteger endWindowCount = new AtomicInteger();
final AtomicLong windowXor = new AtomicLong();
Sink<Object> s =
new Sink<Object>() {
@Override
public int getCount(boolean reset) {
return 0;
}
@Override
public void put(Object payload) {
logger.debug("unexpected payload {}", payload);
}
};
ScheduledThreadPoolExecutor stpe = new ScheduledThreadPoolExecutor(1, "WindowGenerator");
int windowWidth = 200;
long firstWindowMillis = stpe.getCurrentTimeMillis();
firstWindowMillis -= firstWindowMillis % 1000L;
WindowGenerator wg =
new WindowGenerator(
new ScheduledThreadPoolExecutor(1, "WindowGenerator"),
WindowGenerator.MAX_WINDOW_ID + 1024);
wg.setResetWindow(firstWindowMillis);
wg.setFirstWindow(firstWindowMillis);
wg.setWindowWidth(windowWidth);
SweepableReservoir reservoir = wg.acquireReservoir("GeneratorTester", windowWidth);
reservoir.setSink(s);
wg.activate(null);
Thread.sleep(200);
wg.deactivate();
reservoir.sweep(); /* just transfer over all the control tuples */
Tuple t;
while ((t = reservoir.sweep()) != null) {
reservoir.remove();
long windowId = t.getWindowId();
switch (t.getType()) {
case BEGIN_WINDOW:
currentWindow.set(windowId);
beginWindowCount.incrementAndGet();
windowXor.set(windowXor.get() ^ windowId);
break;
case END_WINDOW:
endWindowCount.incrementAndGet();
windowXor.set(windowXor.get() ^ windowId);
break;
case RESET_WINDOW:
break;
default:
currentWindow.set(0);
break;
}
}
long lastWindowMillis = System.currentTimeMillis();
Assert.assertEquals("only last window open", currentWindow.get(), windowXor.get());
long expectedCnt = (lastWindowMillis - firstWindowMillis) / windowWidth;
Assert.assertTrue("Minimum begin window count", expectedCnt + 1 <= beginWindowCount.get());
Assert.assertEquals("end window count", beginWindowCount.get() - 1, endWindowCount.get());
}
