如何从数据库动态地重新调度C#中的Quartz作业调度器?
我在我的C#net网站中加入了Quartz.net库,可以根据某些条件自动发送电子邮件。我已经开始用RepeatForever()做这项工作。我正在从数据库获取计划程序的设置。现在,当作业已经启动时,是否仍要检查数据库中调度程序的设置是否已更改,因此我也应该在方法中更新它们,以便调度程序使用新设置动态运行?到目前为止,我已经做到了:如何从数据库动态地重新调度C#中的Quartz作业调度器?,c#,.net,quartz.net,C#,.net,Quartz.net,我在我的C#net网站中加入了Quartz.net库,可以根据某些条件自动发送电子邮件。我已经开始用RepeatForever()做这项工作。我正在从数据库获取计划程序的设置。现在,当作业已经启动时,是否仍要检查数据库中调度程序的设置是否已更改,因此我也应该在方法中更新它们,以便调度程序使用新设置动态运行?到目前为止,我已经做到了: public void StartJob() { var reminderSettings = GetReminderSettings();
public void StartJob()
{
var reminderSettings = GetReminderSettings(); //getting these settings from database
var count = GetUnpaidInvoicesListCount();
var intervalBtwnReminders = 0;
if (reminderSettings?.RemindersGap != null)
{
intervalBtwnReminders = (int)(reminderSettings.RemindersGap);
}
ISchedulerFactory schedFact = new StdSchedulerFactory();
IScheduler sched = schedFact.GetScheduler();
sched.Start();
// create job
IJobDetail job = JobBuilder.Create<EmailJob>()
.WithIdentity("job1", "group1")
.Build();
// create trigger
ITrigger trigger = TriggerBuilder.Create()
.WithIdentity("trigger1", "group1")
.WithSimpleSchedule(x =>
{
x.WithIntervalInMinutes(intervalBtwnReminders ).RepeatForever();
})
.Build();
sched.ScheduleJob(job, trigger);
}
public void StartJob()
{
var rementersettings=getrementersettings();//从数据库获取这些设置
var count=GetUnpaidInvoicesListCount();
var IntervalbTwnEmlerants=0;
if(提醒设置?.employersgap!=null)
{
IntervalbTwnEmissions=(int)(emissureSettings.EmissuresGap);
}
isSchedulerFactory schedFact=新StdSchedulerFactory();
isScheduler sched=schedFact.GetScheduler();
sched.Start();
//创造就业机会
IJobDetail job=JobBuilder.Create()
.WithIdentity(“工作1”、“组1”)
.Build();
//创建触发器
ITrigger trigger=TriggerBuilder.Create()
.WithIdentity(“触发器1”、“组1”)
.使用简单计划(x=>
{
x、 使用IntervalinMinutes(IntervalbTwn提醒)。永远重复();
})
.Build();
sched.ScheduleJob(作业,触发器);
}
我编写了一套方法,使它更简单。
不能用新的间隔编辑现有触发器,但可以用新触发器替换现有触发器。
CreateTrigger
方法基于旧触发器创建一个新触发器,并传输timestricked
计数
/// <summary>
/// Create a new trigger based on a existing trigger.
/// </summary>
/// <param name="oldTrigger">the existing trigger</param>
/// <param name="startNow">indicates if the trigger should start immediately after schedule</param>
/// <param name="interval">the interval for the new trigger</param>
/// <returns>Returns the new trigger</returns>
public ITrigger CreateTrigger(ITrigger oldTrigger, bool startNow = false, TimeSpan? interval = null)
{
var builder = oldTrigger.GetTriggerBuilder();
if (startNow)
builder = builder.StartNow();
if (interval.HasValue)
builder = builder.WithSimpleSchedule(s => s
.WithInterval(interval.Value)
.RepeatForever());
var newTrigger = builder.Build();
var simpleTrigger = newTrigger as ISimpleTrigger;
if(simpleTrigger != null)
{
var trigger = oldTrigger as ISimpleTrigger;
if (trigger != null)
simpleTrigger.TimesTriggered = trigger.TimesTriggered;
}
return newTrigger;
}
我不明白,你能再解释一下你的解决方案吗?在哪里调用数据库进行设置?@Harry.Naeem我添加了更多的解释,将参数
timespan
重命名为interval
,以使其更清晰。并添加了一个文档标题。我希望现在更容易理解。在旧触发器启动(sched.Start())或(sched.ScheduleJob(job,trigger))之后,我应该在哪里使用GetTrigger()?@Harry.Naeem这些都不是。您的应用程序只需要一个调度程序。方法StartJob()
(名称次优)应仅注册作业/触发器并启动计划程序。然后,您需要记住调度程序作为参考,在某个您可以轻松访问它的地方。让我们假设您执行了StartJob()
,大约5分钟后,您调用了示例。谢谢您,伙计,这非常有效!在你最后的评论中最重要的一句话是,你需要记住调度程序作为参考,这帮助我解决了我的问题。
// get the trigger
var trigger = Scheduler.GetTrigger(new TriggerKey("trigger1", "group1"));
// get your settings and set the interval
var reminderSettings = GetReminderSettings();
var intervalBtwnReminders = 0;
if (reminderSettings?.RemindersGap != null)
{
intervalBtwnReminders = (int)(reminderSettings.RemindersGap);
}
// reschedule the job with a new trigger and start it immediately.
// if you don't want that it starts now, pass 'false' for the 'startNow' parameter
Scheduler.RescheduleJob(trigger.Key, CreateTrigger(trigger, true, TimeSpan.FromMinutes(intervalBtwnReminders)));