Examples with ThrottleState com.spotify.helios.common.descriptors.ThrottleState used on opensource projects

Example 1 with ThrottleState

use of com.spotify.helios.common.descriptors.ThrottleState in project helios by spotify.

the class TaskMonitor method updateThrottle.

/**
   * Derive a new throttle state and propagate it if needed. If flapping, schedule a future check
   * to see if we're still flapping and potentially reset the flapping state.
   */
private boolean updateThrottle() {
    // Derive new throttle state
    final ThrottleState newThrottle;
    final boolean flapping = flapController.isFlapping();
    if (imageFailure != null) {
        // Image failures take precedence
        newThrottle = imageFailure;
    } else {
        newThrottle = flapping ? FLAPPING : NO;
    }
    // If the throttle state changed, propagate it
    final boolean updated;
    if (!Objects.equals(throttle, newThrottle)) {
        log.info("throttle state change: {}: {} -> {}", jobId, throttle, newThrottle);
        throttle = newThrottle;
        statusUpdater.setThrottleState(throttle);
        updated = true;
    } else {
        updated = false;
    }
    // If we're flapping, schedule a future check to potentially reset the flapping state
    if (flapping) {
        if (flapTimeout != null) {
            flapTimeout.cancel(false);
        }
        flapTimeout = scheduler.schedule(new UpdateThrottle(), flapController.millisLeftToUnflap(), MILLISECONDS);
    }
    // Let the caller know if they need to commit the state change
    return updated;
}