InvocationGate.java

package ch.qos.logback.core.util;

public interface InvocationGate {

    final long TIME_UNAVAILABLE = -1;

    /**
     * The caller of this method can decide to skip further work if the returned value is true.
     * 
     * Implementations should be able to give a reasonable answer even if  current time date is unavailable.
     * 
     * @param now can be TIME_UNAVAILABLE (-1) to signal that time is not available
     * @return if true, caller should skip further work
     */
    public abstract boolean isTooSoon(long currentTime);

}