private synchronized boolean shouldFlush() {
if (lastFlush + flushPeriodMillisecond < clock.currentTimeMillis()) {
lastFlush = clock.currentTimeMillis();
return true;
}
return false;
}
public TimeBasedFlush(@Nonnull Clock clock, long flushPeriod, @Nonnull TimeUnit unit) {
this.clock = clock;
this.lastFlush = clock.currentTimeMillis();
this.flushPeriodMillisecond = MILLISECONDS.convert(flushPeriod, unit);
}