/*
* Copyright 2012 LinkedIn, Inc
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not
* use this file except in compliance with the License. You may obtain a copy of
* the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations under
* the License.
*/
package com.linkedin.parseq;
import java.util.concurrent.TimeUnit;
import com.linkedin.parseq.Cancellable;
/**
* An object that allows a task to be scheduled for execution after some delay.
*
* @author Chris Pettitt (cpettitt@linkedin.com)
*/
public interface DelayedExecutor {
/**
* Schedules a command to execute after some period of delay.
*
* @param delay the amount of time to wait before executing the command
* @param unit the time unit for the delay parameter
* @param command the command to execute
* @return a handle that can be used to cancel a future if it has not already run.
*/
Cancellable schedule(long delay, TimeUnit unit, Runnable command);
}