001/* 002 * Licensed to the Apache Software Foundation (ASF) under one or more 003 * contributor license agreements. See the NOTICE file distributed with 004 * this work for additional information regarding copyright ownership. 005 * The ASF licenses this file to You under the Apache license, Version 2.0 006 * (the "License"); you may not use this file except in compliance with 007 * the License. You may obtain a copy of the License at 008 * 009 * http://www.apache.org/licenses/LICENSE-2.0 010 * 011 * Unless required by applicable law or agreed to in writing, software 012 * distributed under the License is distributed on an "AS IS" BASIS, 013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 014 * See the license for the specific language governing permissions and 015 * limitations under the license. 016 */ 017package org.apache.logging.log4j.core.config; 018 019import java.util.Date; 020import java.util.concurrent.Delayed; 021import java.util.concurrent.ExecutionException; 022import java.util.concurrent.ScheduledFuture; 023import java.util.concurrent.TimeUnit; 024import java.util.concurrent.TimeoutException; 025 026/** 027 * 028 */ 029public class CronScheduledFuture<V> implements ScheduledFuture<V> { 030 031 private volatile FutureData futureData; 032 033 public CronScheduledFuture(final ScheduledFuture<V> future, final Date runDate) { 034 this.futureData = new FutureData(future, runDate); 035 } 036 037 public Date getFireTime() { 038 return futureData.runDate; 039 } 040 041 void reset(final ScheduledFuture<?> future, final Date runDate) { 042 futureData = new FutureData(future, runDate); 043 } 044 045 @Override 046 public long getDelay(final TimeUnit unit) { 047 return futureData.scheduledFuture.getDelay(unit); 048 } 049 050 @Override 051 public int compareTo(final Delayed delayed) { 052 return futureData.scheduledFuture.compareTo(delayed); 053 } 054 055 @Override 056 public boolean cancel(final boolean mayInterruptIfRunning) { 057 return futureData.scheduledFuture.cancel(mayInterruptIfRunning); 058 } 059 060 @Override 061 public boolean isCancelled() { 062 return futureData.scheduledFuture.isCancelled(); 063 } 064 065 @Override 066 public boolean isDone() { 067 return futureData.scheduledFuture.isDone(); 068 } 069 070 @Override 071 @SuppressWarnings("unchecked") 072 public V get() throws InterruptedException, ExecutionException { 073 return (V) futureData.scheduledFuture.get(); 074 } 075 076 @Override 077 @SuppressWarnings("unchecked") 078 public V get(final long timeout, final TimeUnit unit) 079 throws InterruptedException, ExecutionException, TimeoutException { 080 return (V) futureData.scheduledFuture.get(timeout, unit); 081 } 082 083 private class FutureData { 084 085 private final ScheduledFuture<?> scheduledFuture; 086 private final Date runDate; 087 088 FutureData(final ScheduledFuture<?> future, final Date runDate) { 089 this.scheduledFuture = future; 090 this.runDate = runDate; 091 } 092 } 093}