/** * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The ASF licenses this file to You 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 kafka.utils import java.util.concurrent._ import scala.math._ class DelayedItem[T](val item: T, delay: Long, unit: TimeUnit) extends Delayed with Logging { val createdMs = SystemTime.milliseconds val delayMs = { val given = unit.toMillis(delay) if (given < 0 || (createdMs + given) < 0) (Long.MaxValue - createdMs) else given } def this(item: T, delayMs: Long) = this(item, delayMs, TimeUnit.MILLISECONDS) /** * The remaining delay time */ def getDelay(unit: TimeUnit): Long = { val elapsedMs = (SystemTime.milliseconds - createdMs) unit.convert(max(delayMs - elapsedMs, 0), TimeUnit.MILLISECONDS) } def compareTo(d: Delayed): Int = { val delayed = d.asInstanceOf[DelayedItem[T]] val myEnd = createdMs + delayMs val yourEnd = delayed.createdMs + delayed.delayMs if(myEnd < yourEnd) -1 else if(myEnd > yourEnd) 1 else 0 } }