NC57 定时任务TaskExecutor 控制单个任务

/* * @(#)TaskExecutor.java 1.0 2004-10-12 * * Copyright 2005 UFIDA Software Co. Ltd. All rights reserved. * UFIDA PROPRIETARY/CONFIDENTIAL. Use is subject to license terms. */package nc.bs.uap.scheduler.impl;import nc.bs.framework.common.IAttributeManager;import nc.bs.framework.common.NCLocator;import nc.bs.framework.component.RemoteProcessComponetFactory;import nc.bs.framework.execute.Executor;import nc.bs.framework.task.ICRController;import nc.bs.framework.tx.NoSpecified;import nc.bs.logging.Logger;import nc.bs.uap.scheduler.ITask;import nc.bs.uap.scheduler.Messages;import nc.itf.uap.scheduler.IExecutorService;import nc.vo.uap.scheduler.TaskStatus;import nc.vo.uap.scheduler.TaskWrapper;/** * 任务的执行器。对经过调度的任务进行处理和执行。由任务执行器池生成。 * <p> * 在接到任务后首先开始执行任务，执行完毕后，把自己加入到任务执行器池的空闲线程队列；自身进入等待状态，等待任务执行器池唤醒。 * 如果没有任务，则进入IDLE的等待状态，如果超时还没有分配的任务，则将通知任务执行器池。任务执行器池根据设定的规则处理此任务执行器。 *  * @author yanglei * @author hgy 5.3 * @since 3.0 */public class TaskExecutor extends Executor {private volatile TaskWrapper taskWrapper = null;/* 任务执行器所归属的线程池 */private TaskExecutorPool pool = null;private RemoteProcessComponetFactory factory;private IAttributeManager requestAttrMgr;private final ICRController crController;private static boolean SCHEDULE_TEST = "test".equals(System.getProperty("nc.scheduler.mode"));/** * 构造任务执行器 *  * @param name *            任务执行器的名称。 * @param pool *            任务执行器所归属的线程池。 */TaskExecutor(String name, TaskExecutorPool pool) {super(name);this.pool = pool;crController = NCLocator.getInstance().lookup(ICRController.class);}/** * 执行器运行的主过程。 */@Overridepublic void run() {for (;;) {manageNullTask();if (getTaskWrapper() == null) {if (pool.notifyTimeOut(this))return;else {continue;}} else {try {executeTask();} finally {TaskWrapper tw = getTaskWrapper();setTaskWrapper(null);if (pool.notifyFree(this, tw))return;}}}}/** * 执行任务。 */private void executeTask() {boolean hasException = false;TaskWrapper tw = getTaskWrapper();// Add By 门志永@云达/新华书店项目2013-4-21 START 执行特定的后台任务/** * XHFX物流接口_分书同步 * XHFX物流接口_运单同步 */if(tw.getTask().getType().equals("1")&&!tw.getTask().getName().equals("XHFX物流接口_运单333同步"))//同步BD_INVBASDOC_PKINVTEMP品种到中间库return;tw.setStatus(TaskStatus.RUNNING);logBeginExecute(tw);ITask task = tw.getTask();try {Logger.init(Messages.LOGGER_ID);long now = System.currentTimeMillis();TaskWrapper.taskWrapperContext.set(tw);bgProcess(tw, true, null);tw.setThread(Thread.currentThread());if (SCHEDULE_TEST|| task.getTaskBody().getClass().getAnnotation(NoSpecified.class) != null) {Messages.log.debug("execute task without default transaction: " + task.getTaskBody());task.getTaskBody().execute();} else {IExecutorService es = (IExecutorService) NCLocator.getInstance().lookup(IExecutorService.class.getName());es.executeTask_RequiresNew(task.getTaskBody());}tw.setStatus(TaskStatus.FINISHED);logExecuteFinished(tw, System.currentTimeMillis() - now);} catch (Exception e) {tw.setStatus(TaskStatus.FAILED);executeTaskException(tw, e);hasException = true;} finally {executeTaskFinally(hasException, tw);tw.setThread(null);if (tw.getCRToken() != null) {crController.releaseToken(tw.getCRToken());tw.setCRToken(null);}TaskWrapper.taskWrapperContext.set(null);Logger.reset();}}/** * 执行时发生异常。 *  * @param task * @param e */private void executeTaskException(TaskWrapper tw, Exception e) {if (e != null) {logExecuteTaskException(tw, e);} else {try {tw.getTask().getTaskBody().cancelExecute();} catch (Exception ex) {logException(ex);}}bgProcess(tw, false, e);}/** * 任务执行完毕，将该任务的对象引用设置为<tt>null</tt>，并且通知由执行器池来处理该执行器。 *  * @return */private void executeTaskFinally(boolean hasException, TaskWrapper tw) {if (!hasException) {bgProcess(tw, false, null);}RemoteProcessComponetFactory factory = getRemoteProcessComponetFactory();if (factory != null) {factory.clearThreadScopePostProcess();}try {IAttributeManager requestAttrMgr = getAttributeManager();if (requestAttrMgr != null) {requestAttrMgr.clear();}} catch (Throwable thr) {Messages.log.error("Background executeTaskFinally error", thr);}}/** * 如果该任务为<tt>null</tt>，则只等待一个超时时间。 */private void manageNullTask() {synchronized (this) {if (getTaskWrapper() == null) {try {wait(pool.getExecutorIdleTimeOut());} catch (InterruptedException e) {logException(e);}}}}/** * 将任务传给任务执行器，并唤醒之(由线程池调用)。 *  * @param taskWrapper *            任务包装类，包括任务ID，任务对象，任务优先级 */synchronized void execute(TaskWrapper taskWrapper) {setTaskWrapper(taskWrapper);notifyAll();}public TaskWrapper getTaskWrapper() {return taskWrapper;}private void setTaskWrapper(TaskWrapper taskWrapper) {this.taskWrapper = taskWrapper;}private void logBeginExecute(TaskWrapper tw) {Messages.log.debug("Begin " + tw);}/** * 对任务的执行产生的异常进行记录。 *  * @param task * @param e */private void logExecuteTaskException(TaskWrapper tw, Exception e) {Messages.log.error("Error execute " + tw, e);}/** * 对异常进行记录。 *  * @param e */private void logException(Throwable e) {Messages.log.warn(Messages.getString("TaskExecutor.exception"), e);}/** * 对任务执行完毕进行记录。 *  * @param e */private void logExecuteFinished(TaskWrapper tw, long time) {Messages.log.debug("Finished " + tw + " spend time: " + time);}private RemoteProcessComponetFactory getRemoteProcessComponetFactory() {if (factory == null) {try {factory = (RemoteProcessComponetFactory) NCLocator.getInstance().lookup("RemoteProcessComponetFactory");} catch (Throwable thr) {Logger.error("Maybe the BizServer has not been started", thr);}}return factory;}private IAttributeManager getAttributeManager() {if (requestAttrMgr == null) {try {requestAttrMgr = (IAttributeManager) NCLocator.getInstance().lookup("nc.bs.framework.core.service.RequestAttributeManager");} catch (Throwable thr) {Logger.error("Maybe the BizServer has not been started", thr);}}return requestAttrMgr;}private void bgProcess(TaskWrapper tw, boolean pre, Throwable t) {try {RemoteProcessComponetFactory factory = getRemoteProcessComponetFactory();if (factory != null) {if (pre) {factory.preProcess();} else {if (t == null) {factory.postProcess();} else {factory.postErrorProcess(t);}}}} catch (Throwable thr) {Messages.log.error("Background process error", thr);}}}