Java tutorial
/* * Copyright 2015 Evgeny Dolganov (evgenij.dolganov@gmail.com). * * 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 och.util.timer; import static och.util.ExceptionUtil.*; import static och.util.Util.*; import java.util.Timer; import java.util.TimerTask; import och.util.model.CallableVoid; import org.apache.commons.logging.Log; public class TimerExt extends Timer { private Log log = getLog(getClass()); private String name; public TimerExt() { super(); } public TimerExt(boolean isDaemon) { super(isDaemon); } public TimerExt(String name, boolean isDaemon) { super(name, isDaemon); this.name = name; } public TimerExt(String name) { super(name); this.name = name; } public void trySchedule(CallableVoid body, long delay) { super.schedule(new TimerTask() { @Override public void run() { try { body.call(); } catch (Throwable t) { log.error(getLogPrefix() + "can't schedule: " + t); } } }, delay); log.info(getLogPrefix() + "timer started: delay=" + delay); } public void schedule(CallableVoid body, long delay) { super.schedule(new TimerTask() { @Override public void run() { try { body.call(); } catch (Exception e) { throw getRuntimeExceptionOrThrowError(e); } } }, delay); log.info(getLogPrefix() + "timer started: delay=" + delay); } public void tryScheduleAtFixedRate(CallableVoid body, long delay, long period) { super.scheduleAtFixedRate(new TimerTask() { @Override public void run() { try { body.call(); } catch (Throwable t) { log.error(getLogPrefix() + "can't schedule: " + t); } } }, delay, period); log.info(getLogPrefix() + "timer started: delay=" + delay + ", period=" + period); } public void scheduleAtFixedRate(CallableVoid body, long delay, long period) { super.scheduleAtFixedRate(new TimerTask() { @Override public void run() { try { body.call(); } catch (Exception e) { throw getRuntimeExceptionOrThrowError(e); } } }, delay, period); log.info(getLogPrefix() + "timer started: delay=" + delay + ", period=" + period); } private String getLogPrefix() { return name != null ? name + ": " : ""; } }