kafka.utils.timer.TimerTask.scala Maven / Gradle / Ivy
/**
* 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.timer
trait TimerTask extends Runnable {
val delayMs: Long // timestamp in millisecond
private[this] var timerTaskEntry: TimerTaskEntry = null
def cancel(): Unit = {
synchronized {
if (timerTaskEntry != null) timerTaskEntry.remove()
timerTaskEntry = null
}
}
private[timer] def setTimerTaskEntry(entry: TimerTaskEntry): Unit = {
synchronized {
// if this timerTask is already held by an existing timer task entry,
// we will remove such an entry first.
if (timerTaskEntry != null && timerTaskEntry != entry)
timerTaskEntry.remove()
timerTaskEntry = entry
}
}
private[timer] def getTimerTaskEntry(): TimerTaskEntry = {
timerTaskEntry
}
}