@Test
public void testRespectsTime() throws Exception {
final long startTime = System.nanoTime();
final AtomicLong currentTime = new AtomicLong(startTime);
Ticker ticker =
new Ticker() {
@Override
public long read() {
return currentTime.get();
}
};
ProportionalZoneFailureDetector detector =
new ProportionalZoneFailureDetector(2, Duration.ONE_HOUR, 0.9, ticker);
for (int i = 0; i < 2; i++) {
detector.onStartupFailure(loc1, entity1, new Throwable("simulated failure"));
}
assertTrue(detector.hasFailed(loc1));
currentTime.set(startTime + TimeUnit.MILLISECONDS.toNanos(1000 * 60 * 60 - 1));
assertTrue(detector.hasFailed(loc1));
currentTime.set(startTime + TimeUnit.MILLISECONDS.toNanos(1000 * 60 * 60 + 1));
assertFalse(detector.hasFailed(loc1));
}
@Test
public void testRespectsProportion() throws Exception {
ProportionalZoneFailureDetector detector =
new ProportionalZoneFailureDetector(2, Duration.ONE_HOUR, 0.9);
for (int i = 0; i < 9; i++) {
detector.onStartupFailure(loc1, entity1, new Throwable("simulated failure"));
}
assertTrue(detector.hasFailed(loc1));
detector.onStartupSuccess(loc1, entity1);
assertTrue(detector.hasFailed(loc1));
detector.onStartupSuccess(loc1, entity1);
assertFalse(detector.hasFailed(loc1));
}
