io.vlingo.xoom.actors.FailureMark Maven / Gradle / Ivy
// Copyright © 2012-2021 VLINGO LABS. All rights reserved.
//
// This Source Code Form is subject to the terms of the
// Mozilla Public License, v. 2.0. If a copy of the MPL
// was not distributed with this file, You can obtain
// one at https://mozilla.org/MPL/2.0/.
package io.vlingo.xoom.actors;
import java.util.concurrent.atomic.AtomicInteger;
import java.util.concurrent.atomic.AtomicLong;
public class FailureMark {
private AtomicLong startOfPeriod;
private AtomicInteger timedIntensity;
public FailureMark() {
reset();
}
boolean failedWithExcessiveFailures(final long period, final int intensity) {
if (intensity == SupervisionStrategy.ForeverIntensity) {
return false;
} else if (intensity == 1) {
return true;
}
final long currentTime = System.currentTimeMillis();
if (startOfPeriod.get() == 0) {
startOfPeriod.set(currentTime);
timedIntensity.set(1);
} else {
timedIntensity.incrementAndGet();
}
final boolean periodExceeded = startOfPeriod.get() - currentTime >= period;
if (timedIntensity.get() > intensity && !periodExceeded) {
return true;
} else if (periodExceeded) {
reset();
return failedWithExcessiveFailures(period, intensity);
}
return false;
}
void reset() {
startOfPeriod = new AtomicLong(0);
timedIntensity = new AtomicInteger(0);
}
}