public class SequentialTriggerListener extends TriggerListenerSupport {
private JobKey activeJob;
private Scheduler activeScheduler;
private Queue<JobDetail> queuedJobs = new ConcurrentLinkedQueue<JobDetail>();
public String getName() {
return "SequentialTriggerListener";
}
public boolean vetoJobExecution(Trigger trigger, JobExecutionContext context) {
synchronized (this) {
if (activeJob != null) {
getLog().debug("Queueing Sequential Job - " + context.getJobDetail().getKey().getName());
JobDetail jd = context.getJobDetail();
activeScheduler = context.getScheduler();
jd = JobBuilder.newJob().usingJobData(jd.getJobDataMap()).withIdentity(getName() + ":" + jd.getKey().getName(), jd.getKey().getGroup())
.ofType(jd.getJobClass()).build();
queuedJobs.add(jd);
return true;
} else {
activeJob = trigger.getJobKey();
getLog().debug("Executing Job - " + activeJob.getName());
return false;
}
}
}
public void triggerMisfired(Trigger trigger) {
triggerFinalized(trigger);
}
public void triggerComplete(Trigger trigger, JobExecutionContext context, CompletedExecutionInstruction triggerInstructionCode) {
triggerFinalized(trigger);
}
protected void triggerFinalized(Trigger trigger) {
synchronized (this) {
try {
if (trigger.getJobKey().equals(activeJob)) {
getLog().debug("Finalized Sequential Job - " + activeJob.getName());
activeJob = null;
JobDetail jd = queuedJobs.poll();
if (jd != null) {
getLog().debug("Triggering Sequential Job - " + jd.getKey().getName());
activeScheduler.scheduleJob(jd,TriggerBuilder.newTrigger().forJob(jd).withIdentity("trigger:" + jd.getKey().getName(), jd.getKey().getGroup())
.startNow().withSchedule(SimpleScheduleBuilder.simpleSchedule().withRepeatCount(0).withIntervalInMilliseconds(1)).build());
}
} else {
// this should not occur as the trigger finalizing should be the one we are tracking.
getLog().warn("Sequential Trigger Listener execution order failer");
}
} catch (SchedulerException ex) {
getLog().warn("Sequential Trigger Listener failure", ex);
}
}
}
}
我很久以前使用过quartz，但是我会尝试注册两个作业监听器来监听两个不同的组。
基本思路是从一个组/列表("todayGroup")触发一个作业，"todayGroup"作业监听器检测完成情况(好或坏)。然后启动列表中的下一个作业。然而，它将刚完成的作业保存在调度程序下的("tomorrowGroup")中。
public class MyTodayGroupListener extends JobListenerSupport {
private String name;
private static String GROUP_NAME = "todayGroup";
public MyOtherJobListener(String name) {
this.name = name;
}
public String getName() {
return name;
}
@Override
public void jobWasExecuted(JobExecutionContext context,
JobExecutionException jobException) {
Scheduler sched = context.getScheduler();
// switch the job to the other group so we don't run it again today.
JobDetail current = context.getJobDetail();
JobDetail tomorrows = current.getJobBuilder().withIdentity(current.getKey().getName(), "tomorrow").build();
sched.addJob(tomorrows,true);
//see if there is anything left to run
Set<JobKey> jobKeys = sched.getJobKeys(groupEquals(GROUP_NAME ));
Iterator<JobKey> nextJob = null;
if(jobKeys != null && !jobKeys.isEmpty() ){
nextJob = jobKeys.iterator();
}
if(nextJob != null){
// Define a Trigger that will fire "now" and associate it with the first job from the list
Trigger trigger = newTrigger()
.withIdentity("trigger1", "group1")
.startNow()
.forJob(nextJob =.next())
.build();
// Schedule the trigger
sched.scheduleJob(trigger);
}
}
}
public class TriggerGroupDisallowConcurrentExecutionTriggerListener : ITriggerListener
{
private IScheduler activeScheduler;
private readonly object locker = new object();
private ConcurrentDictionary<string, JobsQueueInfo> groupsDictionary = new ConcurrentDictionary<string, JobsQueueInfo>();
public string Name => "TriggerGroupDisallowConcurrentExecutionTriggerListener";
public Task TriggerComplete(ITrigger trigger, IJobExecutionContext context, SchedulerInstruction triggerInstructionCode, CancellationToken cancellationToken = default)
{
//JobKey key = context.JobDetail.Key;
//Console.WriteLine($"{DateTime.Now}: TriggerComplete. {key.Name} - {key.Group} - {trigger.Key.Name}");
TriggerFinished(trigger, cancellationToken);
return Task.CompletedTask;
}
public Task TriggerFired(ITrigger trigger, IJobExecutionContext context, CancellationToken cancellationToken = default)
{
//JobKey key = context.JobDetail.Key;
//Console.WriteLine($"{DateTime.Now}: TriggerFired. {key.Name} - {key.Group} - {trigger.Key.Name}");
return Task.CompletedTask;
}
public Task TriggerMisfired(ITrigger trigger, CancellationToken cancellationToken = default)
{
//JobKey key = trigger.JobKey;
//Console.WriteLine($"{DateTime.Now}: TriggerMisfired. {key.Name} - {key.Group} - {trigger.Key.Name}");
TriggerFinished(trigger, cancellationToken);
return Task.CompletedTask;
}
public Task<bool> VetoJobExecution(ITrigger trigger, IJobExecutionContext context, CancellationToken cancellationToken = default)
{
//JobKey key = context.JobDetail.Key;
//Console.WriteLine($"{DateTime.Now}: VetoJobExecution. {key.Name} - {key.Group} - {trigger.Key.Name}");
lock (locker)
{
//if (!groupsDictionary.ContainsKey(context.JobDetail.Key.Group))
//{
groupsDictionary.TryAdd(context.JobDetail.Key.Group, new JobsQueueInfo { QueuedJobs = new ConcurrentQueue<IJobDetail>(), ActiveJobKey = null });
var activeJobKey = groupsDictionary[context.JobDetail.Key.Group].ActiveJobKey;
//}
if (activeJobKey != null && activeJobKey != context.JobDetail.Key)
{
var queuedJobs = groupsDictionary[context.JobDetail.Key.Group].QueuedJobs;
if (queuedJobs.Any(jobDetail => jobDetail.Key.Name == context.JobDetail.Key.Name) == true)
{
//NOTE: Джоба уже есть в очереди, нет необходимости её добавлять повторно
return Task.FromResult(true);
}
else
{
//NOTE: Добавить джобу в очередь на выполнение, и не выполнять её сейчас, т.к. она будет выполнена как только подойдёт её очередь
activeScheduler = context.Scheduler;
var newJob = JobBuilder.Create(context.JobDetail.JobType).WithIdentity(context.JobDetail.Key).Build();
queuedJobs.Enqueue(newJob);
return Task.FromResult(true);
}
}
groupsDictionary[context.JobDetail.Key.Group].ActiveJobKey = trigger.JobKey;
return Task.FromResult(false);
}
}
protected void TriggerFinished(ITrigger trigger, CancellationToken cancellationToken = default)
{
lock (locker)
{
try
{
if (!groupsDictionary.ContainsKey(trigger.JobKey.Group))
{
return;
}
var queuedJobs = groupsDictionary[trigger.JobKey.Group].QueuedJobs;
if (queuedJobs.TryDequeue(out IJobDetail jobDetail))
{
//Console.WriteLine($"dequeue - {jobDetail.Key.Name}");
var task = activeScheduler.TriggerJob(jobDetail.Key, cancellationToken);
task.ConfigureAwait(false);
task.Wait(cancellationToken);
groupsDictionary[trigger.JobKey.Group].ActiveJobKey = jobDetail.Key;
}
else
{
groupsDictionary[trigger.JobKey.Group].ActiveJobKey = null;
}
}
catch (SchedulerException ex)
{
throw;
}
}
}
private class JobsQueueInfo
{
public ConcurrentQueue<IJobDetail> QueuedJobs { get; set; }
public JobKey ActiveJobKey { get; set; }
}
}